19970330 Ver 1_Complete File_19991121

State of North Carolina
Department of Environment
and Natural Resources
Division of Water Quality
James B. Hunt, Jr., Governor
Bill Holman, Secretary
Kerr T. Stevens, Director
November 22, 1999
Mr. Dick Franks
Grandover Development
Koury Ventures Ltd. Partnership
400 Four Seasons Town Centre
Greensboro, North Carolina 27407
Dear Mr. Franks:
Re: Certification Pursuant to Section 401 of the Federal Clean Water Act,
Proposed Commercial Development
WQC Project #: 970330
COE#: 199700557
County: Guilford
Attached hereto is a copy of Certification No. 3218 issued to the Koury Ventures Ltd.
Partnership dated November 22, 1999.
If we can be of further assistance, do not hesitate to contact us.
Sincerely,
Attachments
~ 4 ® o _
NORTH CAROLINA DEPARTMENT OF
ENVIRONMENT AND NATURAL RESOURCES
Kerr T. Stevens
cc: Wilmington District Corps of Engineers
Corps of Engineers Winston-Salem Field Office
Raleigh DWQ Regional Office
Mr. John Donley
Mr. John Parker, Division of Coastal Management
Central Files
Len Rinder
Ray Waugh, Land Design
Todd St. John
Bill Cegles
John Stafford
Craig Meadows
Division of Water Quality • Non-Discharge Branch
1621 Mail Service Center Raleigh NC 27669-1621 Telephone [phone] FAX # [phone]
An Equal Opportunity Affirmative Action Employer • 50% recycled/10% post consumer paper

NORTH CAROLINA 401 WATER QUALITY CERTIFICATION
THIS CERTIFICATION is issued in conformity with the requirements of Section 401
Public Laws 92-500 and 95-217 of the United States and subject to the North Carolina Division
of Water Quality (DWQ) Regulations in 15 NCAC 2H, Section .0500. It is issued to Koury
Ventures Ltd. Partnership resulting in 2.00 acres of wetland impact and 3,690 feet of stream
impact in County pursuant to revise application filed on the 14' day of April 1997 and amended
on March 7, (received March 29) with final revision dated September 24 and November 8, 1999
to construct a commercial development at Grandover Parkway near Guilford College Road.
The application provides adequate assurance that the discharge of fill material into the
waters of Reddicks Creek in conjunction with the proposed development will not result in a
violation of applicable Water Quality Standards and discharge guidelines. Therefore, the State
of North Carolina certifies that this activity will not violate the applicable portions of Sections
301, 302, 303, 306, 307 of PL 92-500 and PL 95-217 if conducted in accordance with the
application and conditions hereinafter set forth.
This approval is only valid for the purpose and design that you submitted in your
application, as described in the Public Notice. If you change your project, you must notify us
and send us a new application for a new certification. If the property is sold, the new owner must
be given a copy of the Certification and approval letter and is thereby responsible for complying
with all conditions. If total wetland fills for this project (now or in the future exceed one acre,
compensatory mitigation may be required as described in 15A NCAC 2H .0506 (h) (6) and (7).
For this approval to be valid, you must follow the conditions listed below. In addition, you
should get any other federal, state or local permits before you go ahead with your project
including (but not limited to) Sediment and Erosion control, Non-discharge and Water Supply
watershed regulations.
Condition(s) of Certification:
1. Appropriate sediment and erosion control practices which equal or exceed those
outlined in the most recent version of two manuals. Either the "North Carolina
Sediment and Erosion Control Planning and Design Manual" or the "North Carolina
Surface Mining Manual" (available from the Division of Land Resources in the
DEHNR Regional or Central Offices). The control practices shall be designed, installed
and maintained properly to ensure compliance with the appropriate turbidity water
quality standard (50 NTUs in all fresh water streams and rivers not designated as trout
waters; 25 NTUs in all lakes and reservoirs.
2. All sediment and erosion control measures placed in wetlands or waters shall be
removed and the natural grade restored after the Division of Land Resources has
released the project;
3. Measures shall be taken to prevent live or fresh concrete from coming into contact with
waters of the state until the concrete has hardened;
4. Should waste or borrow sites be located in wetlands or other waters, compensatory
mitigation will be required since it is a direct impact from road construction activities;
5. Compensatory mitigation shall be done in accordance with the documentation from the
Koury Corporation dated March 7 (March 29, 1999) as clarified by the November 8,
1999 letter from Len Ridner. A total of 660 feet of stream restoration is required by this
Certification. This Certification does not require the floodplain grading as earlier
proposed. DWQ shall be copied on a final detailed mitigation and monitoring plan as
well as the approved ratio, location, size and method of mitigation (restoration,
enhancement, creation, and preservation) within 30 days after permit is issued and
annual reports for the entire length of the monitoring period. The final mitigation plan
shall be sent to DQW within one month of issuance of the 404 Permit.
6. The stormwater management facilities must be built according to the plans dated
September 24, 1999. These facilities must be completed and operational before any
buildings on the site that the facilities serve are occupied. Additionally, the potential
for geomorphic instability of the stream downstream of pond #16 still exists according
to data provided by LandDesign, Inc. As such, the stream reach from below pond #16
(as labeled on the above plans) to the point where the stream exists the property must be
monitored for geomorphic stream stability from the date of issuance of this Certification
until 3 years after the development is completed. If, during this period, the stream
becomes geomorphologically unstable, the stream shall be restored to a stable, natural
dimension, pattern and profile. The above monitoring plan must be approved by this
Office within 3 months of the issuance of this Certification.
7. Remediation wetland restoration efforts shall be done at the mitigation site adjacent to
Hole #16 (west) as outlined in our June 12, 1997 letter to help alleviate local flooding
and increase wetland function. Groundwater monitoring wells shall be installed for all
wetland mitigation acres established on top of sewer lines to ensure their installed
jurisdictional nature.
Violations of any condition herein set forth shall result in revocation of this Certification
and may result in criminal and/or civil penalties. This Certification shall become null and void
unless the above conditions are made conditions of the Federal 404 Permit. This Certification
shall expire upon expiration of the 404 Permit.
If this Certification is unacceptable to you have the right to an adjudicatory hearing upon
written request within sixty (60) days following receipt of this Certification. This request must
be in the form of a written petition conforming to Chapter 150B of the North Carolina General
Statutes and filed with the Office of Administrative Hearings, P.O. Box 27447, Raleigh, N.C.
276 1 1-7447. If modifications are made to an original Certification, you have the right to an
adjudicatory hearing on the modifications upon written request within sixty (60) days following
receipt of the Certification. Unless such demands are made, this Certification shall be final and
binding.
This the 22"J day of November 1999
DIVISION OF WATER QUALITY
Kerr T. Stevens
WQC # 970330
2
SENDING CONFIRMATION
DATE JUN-7-2007 THU 15:57
14AME DWQ-WETLANDS
TEL [phone]
PHONE : [phone]
PAGES : 3/3
START TIME : JUN-07 15:56
ELAPSED TIME : 00141"
MODE It ECM
RESULTS : OK
FIRST PAGE OF RECENT DOCUMENT TRANSMITTED...
State of North Carolina
Department of Environment
.
p
and Natural Resources 1?
Division of Wale(Qualily
James B. Hunt, Jr., Govemor
Bill Holman, Secretary
11«r,+ Crs.euw, cxw.,,.n_?r w
Karr T. Stevens, Director ENV rOw PwT AHO t4-,- L "EZOU,ccf.
N ovember22.1999

a
. 0
p
Mt. crick I?raal:s w
Graudover De,eepment
)
Koury Ventures L.td. Partrtcrahip
400 Fuur Seasons Town Ccnue T n ir
Otcunhoco, Nosth Carolina 27407
Daar Mr. Franke 6 d
Re: Certificanon Ntsuant to Section 401 of the Fcderal Clean Water Act.
Prare"eJ Commmial Devclcrmvt e ; e' c
WQC Project 9: 97,7330
COEI: 199,700557
.
J
County: Guilford -
J
Attached hereto is a copy of Cenirication N.. 3218 iseued to the Koury Venues Ltd. y -
J, P? Y,
Pannrnhi,+dated N.-t- IL 1999. r w
If we can he of further usI; anee. d o not hemale to contact us.
tti
SincU ly,
Kcrr T. Stevens
Atts:ltmcnts
cc: Wilmington Dis:rict Coups of Enginects
Ccr of Engy-ors Winston-Salc,n Field Office
RakilJa DWQ Regioual Office
Mr Jobn Domry
Mr. John Parker, D- n- of Coastal lid-cement
Central Filu
Lca Ri^dcr
Ray Waugh, Land Design
Todd St. John
Bill Ceg)es
John Slanord
Cmig Menlo.'
Dlvie on of Watar Oualdy • Non-Dlacharpe Branch
1821 Mail S-ee eemer Ralciph NC 276891621 Te ephone 914733.1786 PAX 1733-9839
An Cgva Opp-rty AM,mi" Action rn-&ye. • cox mryda 10% port --r ;.per

Environmental Planning Consultant 3714 Spokeshave Late
Professional Wetland Scientist Matthews, NC 181.05
Land Planning Tole: (704) 84"461
Fax [phone]
FAX CO ER L.EITER
Send To Fax Number : l~?l? -?i ?e1 Date :
To: O AA- V d(AvN
From : Cke, lap1rtAo
Reference: (?1_ -r' ?'+O1?1- ?? e?'..
11
Remarks/Message:
Copy: From
lk V rr.
LN T'E
The University of North Carolina at Charlotte
9201, University City Boulevard
Charlotte, N.C. 28=3-Ml
Vopt, of 4dr,"plry wt4 VA lb -w-*,
7(M-547 -22Y.1 6br: *-N7..1182
Memorandum
Date: Oct. 8, 1999
To: Len Rindner, Environmental Consultant
From: Randy Forsythe, Geologist & Assoc. Prof.
Re: Holden Road Stream Restoration
This memorandum is written in response to your inquiry, regarding the
need /requirements for flood plain detention areas at the Holden Road stream restoration
site.
The approach to stream restoration in our plan is conventional, in that first the nature
and causes of impairment were identified in a stream assesaruent; and then,solutions
were developed to address these causes in our restoration plan.
The detailed assessment of the stream completed In June of this year Jndicaated that the
main problem with this reach is it is not in a stable morphologic regime. The causes
were identified as increased storm flow due to urbanization, and sewerline right-of-way
drainage ditches, Stream studies from urban areas such as Charlotte are unequivocal
in their findings of entrenchment and instability due to urbanization. From the vantage
point of fluvial geonnorphology merely armoring existing channel bars by rip-rap or
bioengineering without adjusting flows or channel morphology does not address the
fundamental causes of impairment, it only prolonging the inevitable.
Ae part of the process of investigating all viable solutions in this restoration effort a
meeting was held with the Greensboro sewer utility regarding the sewer line right-of
way. At this meeting it was determined that no flood water detention over the sewer line
right-of-way would be permitted under their maintenance protocol.
We there fared the double challenge of not only recovering the original function of the
flood plain, but also accomodaating a 10-20% increase in storm flows due to
urbanization. Even if we could have blocked the existing ditches than were installed to
drain the sewer line right-of-way, the frequency and stage of storm wafter would still not
have permitted establishing a stable channel morphology. Some means of both flood
plain detention recovery and augmentation was essential to meeting the goals of this
restoration. Our plan recovers, and augments, flood plain storage in a very low Impact
manner. Rather than make an instream BMP, we have merely bermd up the existing
flood plain along the sewer line side to provide enhanced storage at or near 'bankfull
stage. Partial clearing in this area has already occurred along the sewer line, and
additional clearing would have been neceassQry to deal with bank and channel retoration
The Univemity of North Carolina is composed of Ike sixtWN pubic senior inelitutnms in Nrnlh t"m,ydk,u
An Frpnri 0p7x1r11,n0hr1Af}frmg1h?r Action F,mpkryer
a
elements of the plan. Since the proposed flood plain detention and storage will only be
used during bankfull flows (1-2 year frequency) the land areas shown for the detention
cells will support a. variety of plant communities (which can be determined once water
budget conditions are better know).
It is incorrect to view these flood plain detention, cells as ponds or perhaps even wetlands
as water may only enter on a frequency of 1-2 years. It is also important to note that
they detain water mostly by building berms or levees around their fringes, not by `meyjor
pit excavations. I see no need to modify flood plain levels more than 1 to 2 feet in
selected areas. Since water enters at the top of the first berm cell, the lower ce s. can
maintain most of their storage potential with low berms built up from the existing flood
plain. Each cell has a lateral expansion of the flood plain towards the adjacent bill
slope. Each cell has been designed for only 2 feet of water storage, and this o=ily rat 'an
approximate frequency of the bankfull discharge. The upper cell has the greated -;mount
of excavation (perhaps 2 feet at it's uppermost end). This is because the water enters at
or slightly beneath bank full discharge, which is approximately l foot beneath the `level
of the flood plain at this point, Overall, once the work is done 1 see no reason *1 y flood
plain habitat will be diminished in any signf cant way. Also there is a rea sonabke chanee.
that wetlands may be able to be established in these areas. while we can work with`.the
various agencies to modify the berm cells to maximize public benefit, reducing detention
storage by more that 20% from our existing plan may jeprodize the integretty of 'the
overall restoration, Thus i would urge us to be modest in making future changes 'along
these lines. One avenue which could help us limit excavation in the upper berm cell
would be to move the inlet to a higher point along the stream., essentially ph,-dng a bit
more head. This of course gets into more clearing, and may also be complicated by the
anticipated road crossing at the upper end of the stream reach proposed for restoration.
Overall, the flood plain detention cells in the plan:
1) restores and enhances flood plain water storage,
2) improves water quality due to flood plain filtering and detention effects,
3). has the potential o( improving flood plain habitat (if wetland can be
established)
a) address the main causes of stream impairment.
With the exception of getting the City of Greensboro to build a major upstream lake, I
see no praotfnat alternative, to the flood plain detention cells we have included in this
proposal if we are to address the fundamental causes of stream impairment in a
professional manner. On a theoretical level, it is of course possible to postulate the
existence of a new channel design which conveys increased urban. flows in a more stable
channel morphology. However, stream design theories and reality ere still a universe
apart. Overall, 1 suspect that folks have been thinking of the flood plain detention areas
in our plan as non.-habitat supporting areas; or something like dry storm detention
areas. Urban areas always have sewer lines along creeks. The restructured flood plain
detention design in our plan, if approved, should provide a great example of how urban
areas in North Carolina can keep water and habitat value while still having the sewer
lines. The key here is the judicious use berms and stage-dependent flow control to
restore and augment flood plain fhnction in a manner which keeps ecological value,
restores the stream, and still permits the use of the corridor for sewer lines.
Fundamentally, I fail to see how the plan does not benefit the public of North Carolina.
the Univawmty of North Carolina is rartpor vlorlhr r.1sle.n public xMior ineK??t4mr in Norih CaMiri.
An Egrud Opp n1uniiv1ADirntatMw Anion FanpigVer
State of North Carolina
Department of Environment
and Natural Resources /? 0
Division of Water Quality
VIAL
James B. Hunt, Jr., Governor D E I V R
Bill Holman, Secretary Kerr T. Stevens, Director
(21/ 6
Division of Water Quality
Environmental Sciences Branch & Wetlands/401 Unit
Location: 4401 Reedy Creek Road
Raleigh, N,C. 27607
Mailing Address: 1621 Mail Service Center
Raleigh, N,C. 27699
FAX: [phone]
a S'( 6 3-?
FROM:
PHONE:
NO. OF PAGES INCLUDING THIS SHEET:
If you receive this fax by mistake call; ESB [phone] or Wetlands [phone].
4
Mr. John R. Dorney d? 'I__IW r-
Division of Water Quality NCDENR `
4401 Reedy Creek Road
Raleigh, NC 27607`Q
Environmental Planning Consultant 3714 Spokeshave Lane
Landscape Architecture Matthews, NC 28105
Land Planning [phone]
November 8 1999
auulect: dream M11191111013 * Urannnver - Action No 199700557
Dear John:
As you requested I have reviewed the proposed impacts to determine the linear footage of
mitigation necessary to meet NCDWQ requirements. According to your review, the
NCDWQ mitigation requirements may be met within the overall proposed plan, if there
is adequate linear footage in reach segment HRB2 of the Holden Road Stream
Restoration Plan. The following is the analysis for your review. There are also "priority
bank stabilization areas" in HRBI and HRB3 that probably should be counted toward the
linear footage requirements, if required.
Linear Footage of Stream Restoration Available in reach HRB2 = + 960 if
Linear Footage Potentially Available in HRBI and HRB3 = + 690 If
DWQ
ID Type Class, ACtivity LF Mit L F
A Per. Tributary Rip -Rap Channel Flooding 630 If 0 if
(impacts due to stormwater facility)
B Stream PFOIA
C Int. Tributary PFOIA
D Wed Int & Per.
stream PSS1AIPFOIA
E Per. Tributary PFOIA
(impacts due to stormwater facility)
Fill (Dam) 80 If ±80 if
Rit Crossing 1001f ±100 if
Fill 2301E Olf
Fill 1,350 if ±660 rf
(Perennial)
Flooding (stormwater pond)
1,200 rf 0 if
Dam 6S bf + 6S?f
Total Impacts to Jurisdictional Waters of the U.S. requiring
Mitigation per NCDWQ requirements ±905 if
Mr. John Dorney, Page 2
November 8, 1999
Based on this analysis, there appears to be sufficient stream restoration potential to meet
the NCDWQ stream mitigation requirements.
Please let me know if you have any questions or require further explanation. Thank you
for your consideration.
Thank you.
tA-----MW4
Leonard S. Rindner, PWS
Environmental Planning Consultant
cc: David Howard
Dick Franks
Koury Corporation
400 Four Seasons Town Centre
Greensboro, NC 27407
John Thomas - USACE
b?0? ?O
\ sib
O
O
N
0

F•ti ?

n.? W

Y

^
J? 0
h.?

ti? r
h ,•-

. l4 ijr
h
Z
? O
? I f
, Aye. Q

A'
W ter
`
` l? F
,
r W
Q

N
J
O
N
w
W
5
W
3
0
z
a
J
CL
z
O
H
Q
C7
Q
W
I-
5-c.. Priority bahk•stabilization areas for HRB1 segment (200' of bank). Legend shown on figure 5a, and
Section location shown on figure 6
Selective bank clearing only
where stabilization is emplaced i ,
'.
f Y' 1" P Y-1
IX
r' Y .r'Yr:c'Y.".4 , ,?W •1 r rr?ll.,i fA.'rf,: ...'f:?.`rY'Yp?:Yw7l°y'`Y,r.- r, r ..
50 ft 1
.? Y: ,rs,;r.s,..r.v :r..1 .............w ?....., w ,.r 7 rf ? ?; ,.r.,• r. •?•,. ,
200 LF BANK STABILIZATION
.r. a: s ..- :r. Y.:A.;1 -s.. ,::'e:':i.'x'se
Forested banks to be left as is on south side;; H B y
.ry ryryG.ei Unmodified Riparlal Forested Areas
60 feel Toe roveknen 1 (<50% Duration Slag.)
Riffle Sections (cobbles:gravel; 15:05)
Point Bars (,B:1 elope w/gravel:sand; 70:30)
Pooling water areas (poorly graded medium to coarse sand)
44 Transverse rook sill
Root wad placed at 15 to 30 degroe angle Into upstream dlrcllon
Up and downstream from root wade, bank refusal revelment
qr Rock vane collector
H Ft B2
F;vfe 5a,
5d. Priority bank stabilization areas for HRB3 segment (470' of bank) Legend shown on figure 5a, and
Section location shown on figure E
Selective bank clearing only Bank Stabilization Areas (details shown Fig. 5b,& appendix d)
50 ft? where stabilization is emplaced }y?:
W.J 1A
t?. ?-
"Y.'77'S'.'S'..:fvSl''•,:i;i'l:,C 'WJ;X { 4...i:,.i. 1':;r.,,1..f::S'„ti:;;i'.P ;1`, 'i. 'f .Y.:l'': '7• i,ai,5:,5,.:`i..,.?...i.. ti, i. S`a;"i:,l.,,.i':,r. .,.,l ,f •. r.,
4' S'1" T Y r r Y',C'.i .l f :T r 1, , Y 1 r i ,f 1" .S L r f i r r. .4. .1 4, 1..1'.r r 1 r.,,S S, ,.. Y. 1 t..i 1 r 1 r. t f 4 1 7 .S t, Y .4
a;".,W..S;..Y:..Y.T.,:7S1 f 1 :'4:,.`i
1..Y P It' •f .,. Y. 1.:.5 4 ? p p
.1.,:1..4' 'i Y.r.S., i. 'S 'i 5.1. ''i. F A l7
si1^Y.r.'4 •:
470 LF BANK . r ,•. .,r. ,, • .s,.,ic : Y, s ... ?..
STABILIZATION ?,. f ..... ;rs: > ?;;:; 4 • Y;;s:;r' : ?? T, .. s ,,; 1.;.4:;.7 .s.
f°'Forested banks to be left as is on south side,?p.
,.. .........:.. ..:...-,,...,..,..,,.. v.. -.......... ......,-..:. -.::....,.,.....'v.t.,., .'?..;7,.4;::5";9:;:5:::4'.•'i`.,Y.:::i:::4;:;4::5:ai:;;:::i" l;S;::Y;:4:.,f..S..,,...4:: `.A-1-"'1'.,X:,
1..5.,1.,^Y,f,..r..,L..Y..•S.TiY„1_,S.,:i..';..5'..'i,..4.,;1;.A"...f1.,L;.,.•5;,.,1.,1
rT rer A WA e9 re+TAM ATS llwe ?^e^ e r 1 u_u._. - -- 6,--
.. x li I
U ? ? r A
(rod LL
CO
+1 LLI
a ?Qw.
ICA o?
$ ?- I O W W „
1 I +I 0 Z V .//
C In W Z 0 i
5 I M. W
J l ?? W Q a U.
?I\
° ? x 5 ?W, 6n b
Z F- Z w S? to I L?
W t? Q +, 4
a \. O J LU Li
f ` \ o 00 3 - yo ?l
e
1 I1 \ `? \\ I Z ~
= CL
If 'fit. ;\ d
?? ?,? U ? ? \ \ N 7U AL
A \ \y
LLJ
fir, ?l 1 ? - I• ( - ? j? ' --'?'??' ' ,?f, I \ ?.
GR DOVER
Guilford County, North Carolina
\ t•' ?° a iI Koury Ventures Limited Partnership
COMMERCIAL RETIL• CENTER Leonard S. Rindner, PWS
PREFE'R'-MY AL??I?iI A7?VE
\ LL
G
I o _z
+1 Q ?- o
j !- `z N
U
I a 0 p L o
r \ \ Q z .
I rI \i W z o0
r / 2 W
\ J / o M. o
r I Q / Q Q 3 c?
z :L
aW' - z °
LIJ
r r CL J o
Z W
W Q Q o
LLI
O=, z U
a rS O V]
/ (n z? LL
Ij111 11111111 IIIIUIII W z J
W ?
I I O \ p co
+I
z \ Z a V
CAI
O
v X W
r
O I = 0 \ '? W. m Q
? 4o
f I C= 0? r N
? \ ti J
W ?? I I p
°? I ad I z nzwj= o z
I I 1 ,II , V
ce.
a I Q1? III , ? II ? a
I ? O III
1 II , , II p
II
? ? I ? III 111
} ri I r ? ?
I I I I. III11 _ II 1??? i
I GRANDOVER
1 Guilford County, North Carolina
Koury Ventures Limited Partnership
1 Leonard S. Rindner, PWS
sl
STORM WATER POND PLAN
PERMITTING PLAN
i
50 100 200 300 400' 500.

"
'

\ So". 1
-800
D.ITl: 8-18-87
PREVIOUSLY PERMITTED INTERMITTENT TR46 O \

- - - ` 1.95 AOR.ES
? v

w
......................................
.................................... .
.......................... '•'; , \

V :ivi?.:,. ..x • .

W
<
FUTURE PARKING
?O
PERENNIAL STREAM IMPACT ±660 LF \\
FUTURE R TAIIC 0 \
1111 I \
FUT PAR ING U ` \
E4 \
SITE ?DRAJAIS TO A REGIONAL STORM WATER Q1?1'. 5L1 ?Y ? ?
iFA?11 Y..AIWI? ?PII.CATII?CS 'I'COI?C?dl +rabLF :: E
S 1
0R?E 44t MILL ,,ESE E - G?E'.D T'Q I1r :. ? 1O ITY ,? ?
a?ID hlom-t ER ,.? EIITE.R U W
DETENTION FACrILI T p
.I
'e a
1 I' +f?• ?' 0.33 ACRES
-------------
TOTAL IMPACTS 1.58 ACRES
?
1
I i + M RE 0. ICE
I PARCE
COMMERCIAL RETAIL CENTER PERMITTING PLAN

GRANDOVER
Guilford County, North Carolina
Koury Ventures Limited Partnership
Leonard S. Rindner, PWS
(4 dil (,gn,d
r, Ovx,
Section pre ckW . post % increase M pTe t
vel shear power vel shear power vel shear power I?
7 4.94 1.48 7.32 6.64 2.31 15.33 26% 36% 52%
10 4.91 1.47 7.22 5.49 1.74 9.54 11% 16% 24%
Grandover Channel Velocities 970330
r (?
pW 1
??/5J99 s?o?C ? <Ur? 5 ?1, sew,//
Of?

f
¢C221'R
CC<CC¢
???7 J7
000000
lu uwrU
2v +Sww
4vf M,n 3
F
ilk

J
,I

10

--- Oct
e
i.,: Y GL.??. e

I
I?
Z
O ?? w ?- - U)
zo''Jw IQ
,
U 00 0 0 z
U w w P
L 00Z°
L
LL o
F m-v)o?
0
O o w o w.
D ?z0? w%.

Lt.. ° w m W N
O
z Q_U
W W
z
w
Z
O w O
°°N d (?,

1= Z<
Q?a??
v
U =rJ°w
LL Q o lai Q

J
d M Q O
ai

w
V)
Z o
>
!
U F- U- w
F
z
-
0
V) w
Q m U
W
W w
F- Z?cn°
W
z F-FNz
°
V) Lli
w
w
cn m a
w
°
o!:D
Q z
U Q LL)
LL O
w (n 2 :2
L 6
w O V
rn
;? 00 O
0 00
Lo >:
N
J W
z w W

a
s o
Of 0
Of
0
a cn m
JIB
w w W 1c
w
O U ti
`Z Q 2 Q
~ w
Q Q 0 Z ,J
Z < i05
:2 ol :2
Q 00 0 nd
z U (n L, u
0 a w r 1?
1- Q -41
L = O m m
~ Z 0
O ?i C)f
w Lo 00 f3f
Q
Z ?
?QOQ
D UZ ?:
° -i o
LLI ° s t4
w
0 m
w
m ?m O V
(n p J ?- ?
z0 z J Q ?+
Cl- d (_ v
cn = + ,
Lli
Z
w ~
m J
J m Li J
Q I-- Q
= O
S 0>- 2 -1
V7 li Q Cn ,??y
w o or J
&; z ?E z w a
W 0 z m 0 0. f? - ..tx
H
O
Z :3r-
> c
Z
O r
LanbDesign, Inc.
TRANSMITTAL
1208 Eastchester Drive, Suite 200 Land Planning
High Point, NC 27265 Urban Design
Phone: [phone] Civil Engineering
Fax: [phone] Landscaye Architecture
_ -
! w ,u,,4.1 Y SECT1GN
DATE: 2-L( PROJECT: PROJECT #: os
TO: CV`1r.?oc S+-?J ??
We transmit: - by mail
- by courier
j" by overnight service
- by second day air
- by hand delivery
- pick up
For: jgrour approval
- your file/use
- your information
- revision and submission
- distribution
- your signature
- your review and comment
QTY DATED DESCRIPTION
Z IZy?? ? b..9 0,1.-k(4 X

COMMENTS: "-?"

w S
Leo,,,

SENT BY p? 14 ? M
CC:
H//Forms/New Forms
LanbDesign, Inc.
1208 Eastchester Drive, Suite 200
High Point, NC 27265
Phone: [phone]
Fax: [phone]
DATE: ?ju- ?-Q' ??SS PROJECT: C-,?????
TO: -faw -Ou?- -1-b ??
We transmit: Xby mail
by courier
by overnight service
- by second day air
- by hand delivery
- pick up
TRANSMITTAL
Land Planning
Urban Design
Civil Engineering
- Landscape Architecture
PROJECT #:
For: ?Cyour approval
your file/use
your information
revision and submission
distribution
- your signature
- your review and comment
QTY DATED DESCRIPTION
v SS rl e9 v?u ?f ?',"o n i ?'o f

COMMENTS:
01 1 1

SENT BY:
CC:
H//Forms/New Forms
I V __ I JJJ G - C.IVr I'1 1 _\ , I LMI VVV I I ,N LI VV J..JV UCJ::J : / C7.i r. I
Operation and Maintenance
Project Name: Grandover Commercial Pond #16 Project Number: 78050
Responsible Party: Koury Corporation PhoneNumber: [phone]
Address: 400 Four Seasons Town Center, Greensboro, NC 27407
1. Inspect monthly, or after every runoff-producing rainfall event, whichever comes first.
A. Remove debris from the trash rack.
B- Check and clear the orifice of any obstructions. If a pump is used as the drawdown mechanism, check
for pump operation.
C. Check the pond side slopes; remove trash, repair eroded areas before the next rainfall event.
D. If the pond is operated with a vegetated filter, check the filter for sediment accumulation, erosion and
proper operation of the flow spreader mechanism. Repair as necessary.
111. Quarterly
A. Inspect the collection system (i.e., catch basins, piping, grassed swales) for proper functioning. Clear
accumulated crash from basin grates and basin bottoms, and check piping for obstructions.
B. Check pond inlet pipes for undercutting, replace riprap, and repair broken pipes.
C. Reseed grassed swales, including the vegetated filter if applicable, twice a year as necessary. Repair
eroded areas immediately.
III. Every 6 months
A. Remove accumulated sediment from the bottom of the outlet structure.
B. Check the pond depth at various points in the pond. If depth is reduced to 73% of original design
depth, sediment will be removed to at least original design depth.
IV. General
A. Mow the side slopes, not including normally submerged vegetated shelf, according to the season.
Maximum grass height will be 6".
B_ Cattails, and other indigenous wetland plants, are encouraged along the pond perimeter; however,
they must be removed when they cover the entire surface area of the pond.
C. The orifice is designed to draw down the pond in 2-5 days. If drawdown is not accomplished in that
time, the system may be clogged. The source of the clogging must be found and eliminated.
D. A pump shall be supplied to dewater permanent pool for emergency situations and maintenance.
)AMID }"FLD E. All components of the detention pond system must be kept in good working order.
I %ehffd Pranks, sr'-, Vice-President , hereby acknowledge that I am the financially responsible party for
maintenance o this detention pond. I wil perform the maintenance as outlined above, as part of the
Certification of Compliance with Stormwatcr Regulations received for this project.
S azure: Date: 10L56 q
I, .LINDA Il . Ae:&& / e-k , a Notary Public for the State of I1)MT14 e 4Ro L/
County of D4VI Ds oA).,,,,,+!+ do hereby certify that -bA.?1 D atWAR D
personally appeareoday of DCTd f3F?t° , l and acknowledge the due execution
of the foregoing instrutli8sl<t';:= Witngij d and official seal,
;;G??,
r?-e1?- 1 yyy = lJ i rr? r Kur i LAA11gU 1GJ 117114 C.114u .3130 00M 7 / 0"
Operation and Maintenance
Project Name: Grandover Commercial Pond #17
Project Number: 78050
r_ .3
Responsible Party: Koury Corporation PhoneNumber: [phone]
Address: 400 Four Seasons Town Center, Greensboro, NC 27407
1. Inspect monthly, or after every runoff-producing rainfall event, whichever comes first.
A. Remove debris from the trash rack.
B. Check and clear the orifice of any obstructions. If a pump is used as the drawdown mechanism, check
for pump operation.
C. Check the pond side slopes; remove trash, repair eroded areas before the next rainfall event.
D. If the pond is operated with a vegetated filter, check the filter for sediment accumulation, erosion and
proper operation of the flow spreader mechanism. Repair as necessary.
H. Quarterly
A. Inspect the collection system (i.e., catch basins, piping, grassed swales) for proper functioning. Clear
accumulated trash from basin grates and basin bottoms, and check piping for obstructions.
B. Check pond inlet pipes for undercutting, replace riprap, and repair broken pipes.
C. Reseed grassed swales, including the vegetated filter if applicable, twice a year as necessary- Repair
eroded areas immediately.
III. Every 6 months
A_ Remove accumulated sediment from the bottom of the outlet structure.
B. Check the pond depth at various points in the pond. If depth is reduced to 75% of original design
depth, sediment will be removed to at least original design depth.
IV. General
A. Mow the side slopes, not including normally submerged vegetated shelf, according to the season.
Maximum grass height will be 6".
B. Cattails, and other indigenous wetland plants, are encouraged along the pond perimeter; however,
they must be removed when they cover the entire surface area of the pond.
C_ The orifice is designed to draw down the pond in 2-5 days. If drawdown is not accomplished in that
time, the system may be clogged. The source of the clogging must be found and eliminated.
D. A pump shall be supplied to dewater permanent pool for emergency situations and maintenance.
P }6„ys, p All components of the detention pond system must be kept in good working order.
I RiehaFd ., Vice-President , hereby acknowledge that I am the financially responsible party for
maintenance o this detention pond. I will perform the maintenance as outlined above, as part of the
Certification of Compliance with Stormwater Regulations received for this project.
Sign ture: s Lw
? ?--? _ Date: /0
?5?59
I, . lAd?d ,1(. A6EDR1tom , a Notary Public for the State of /VQR-t14 84-9o,4 11?4 ,
County of do hereby certify that _14Va) " Id A D
personally appeared before, khii?'' day of , 1999 , and acknowledge the due execution
of the foregoing instruni?tnessrrzyta(zd and official seal,
SEAL
My commission expires VVGW{,,i?' ?!?4?
&, 0 d -?-, / ?
Project No. DWQ
Project Name: Grandover Commercial
SUBMITTED DESIGN:
elevations
Bottom of Basin (ft) 791.5
Permanent Pool (ft) 795.5
Temporary Pool (ft) 797.9
a rea.5
Permanent Pool SA (sq ft) 124146
Drainage Area (ac) 151.74
Impervious Area (ac) 83.5
volumes
P t P I ft) 461600
REQUIRED DESIGN:
status
4 ft. depth ok
2.4 ft. depth ok
124320 sq. ft. check sutfac
55.0 (h
erm-men I'll (cu
Temporary Pool (cu ft) 311500 300335 cu. ft. /J ok
? x e. v, Forebay (cu ft) 105600 22.9 (7c l check forebc ?
other parameters ,,wll
SA/DA 1.88 ??t 1o?i11.88
Orifice Diameter (in) 0.12 cfs drawdown
Design Rainfall (in) 1 31.3 day drawdown check drawn
Linear Interpolation of Correct SA/DA * * *
Impervious
Next Lowest 50
Project Impervious 55.0
Next Highest 60
4 ft. Permanent Pool Depth
SA/DA from Table
1.73
1.88
2.03
Project No. DWQ 970330
Project Name: Grandover Com mercial pond 17
SUBMITTED DESIGN: REQUIRED DESIGN:
elevations status
Bottom of Basin (ft) 809.5
Permanent Pool (ft) 814 4.5 ft. depth ok
Temporary Pool (ft) 815.7 1.7 ft. depth ok
areas
Permanent Pool SA (sq ft)
20908.8
16398 sq. ft.
ok
Drainage Area (ac) 15.69
Impervious Area (ac) 10.98 70.0 %
volumes
Permanent Pool (cu ft) 77650
Temporary Pool (cu ft)
F
b
(
ft) 38500
21270 38719 cu. ft.
27
4 % check tempo
check forehc
ore
ay
cu .
other parameters
SA/DA 0 2.40
Orifice Diameter (in) 3 0.22 cfs drawdown
Design Rainfall (in) 1 2.0 day drawdown ok
Linear Interpolation of Correct SA/DA***
4.5 ft. Permanent Pool Depth
°h Impervious SA/DA from Table
Next Lowest 70 2.4
Project Impervious 70.0 2.40
Next Highest 80 2.78
State of North Carolina
Department of Environment
and Natural Resources
Division of Water Quality.
James B. Hunt, Jr., Governor
Bill Holman, Secretary
Kerr T. Stevens, Director
EWIRONMENT AND NATURA4.RE30Q1R095:.
November 22, 1999
Mr. Dick Franks
Grandover Development
Koury Ventures Ltd. Partnership
400 Four Seasons Town Centro
Greensboro, North CarolMs 21407
Dear Mr, Franks:
to Section 401 of the Federal Clean Water Act,
Re: Certifi cation Pursuant
Proposed Commercial Development
WQC Project #: 970330
COE#: 199700557
County: Guilford
Attached hereto is a copy of Certification No. 321.8 issued to the Koury Ventures Ltd:
Parmership:dated November 22, 1999.
If we can be of further assistance, do not hesitate to contact us.
Sinc ly,
to ns
Attachments
cc: Wilmington District Corps of Engineers
Corps of Engincors Winton-Snlarn Field Office
Raleigh DWQ Regional Office
Mr. John Domey
Mr. John Parker, Division of Coastal Management
Central Files
Len Rinder
Ray Watigh, Land Design
Todd St_ John
Bill: Cegles
John Stafford
Craig Meadows
Division of Water Quality • Non-Discharge Branch
1621 Mail Service Center Raleigh NC 27889-1621 Telephone [phone] FAX [phone]
An Equal Opportunity Affirmative Action Employer • 50% recycled1101/6 post consumer paper

Eavlroamental 1'Mennlnp. CoaiulWt 3714 Spok"Nave Lane
Profea`ionAl Wetland Scientist Matthiwa, NIP AM
Land Planning Tele: (704) 6404461.
Fax (704) 847_018S
Send To Fax Number : I ' 1114-""Date:
ro: ,1a?w A ?adt s0 Jab.,
From :.? 00000P
Reference-Mv 1pr,
Remarks/Memage:
Copy: From :
LEONARD S. RINDNER, PAS
tnvironmentol Plaaniag C,o?navltgnt 3714'Spoketllive I:age
Landscape Architecture Mattttervr, NC,20105
Land 'Planning (704) 9"-WI
November 8,1999
Mr. John R. Dorney
Division of Water Quality -- NCDENR
4401 Reedy Creek Road
Raleigh, NC 27507
7
Dear John:
As you requested I have reviewed the proposed impacts to determine the linear foftwqf
mitigation necessary to mesa NCDWQ requirements. According to your revieWi the
NCDWQ mitigation requirements may be met within the overall proposed plan, if there
is adequate linear footage in reach segment HRB2 of the Holden Road Stream
Restoration Plan. The following is the analysis for your review. 'T'here are also "priority
bands stabilization areas" in HRB1 and HRB3 that probably should be counted- towaittN.
linear footage requirements, if required-
Llncar Footage of Stream Restoration Available In reach.HAR2 . = ± 960 if
Linear Footage Potentlally.Available In HRBI and HRB3 00 It
Brstokdom at Anticipated Immets to JydWIUiaA&L%rtA
IDWQ
ID Tyne cy Activity Mgt. LE
A Per. Tributary Rip -Rap Channel Floo4lpg 630 V 0 If
(in fled time to stermwater facility)
B Stream PFOIA
C .Int. Tributary PFOIA
O Wet/1nt & Per.
stream PSSlA/PFOIA
E Per. Tributary PFOIA
#"Mc s clue to WerxnvaW factory)
Fill (Oan) 801f +80 If
Rd Crossing 100 If *I'DO if
Fill 2301f 0 If
Fat 1,350 If +6601f
?Pere?rnlal)
Flooding (stormwater pond)
1,200 If 0 If
Date f ( + 6s (?
Total !?nparts to Jurlsdlctioned Waterer of the V.S. requiring
Mitigation per NCBWQ requirements +905 (f
Mr. John Dorney, Page 2
November 8, 1999
Based on this analysis, there appears to be sufficient stream restoration potential to moot
the NCDWQ stream mitigation requirements.
Please let me know if you have any questions or require further explanation. Thartk you
for your consideration.
Thank you.
Sincerely l
Leonard S. Rindmr, PWS
Environmental Planning Consultant
cc: David Howard
Dick Franks
Koury Corporation
400 Four Seasons Town Centre
Greensboro, NC 27407
John 1"homas • USAGE
i'? ? ^ {rte ..
e ,, i. { ft
}' • `
S ? Y
40
m di
N ?..
M
5c. Priority bain'k:stabllizatIon areas for HRBI segment (200' of bank), Legend shown on figure 6'si; and
Section location shown.oh'fi ure 0' `
Selective bank clearing only
where stabiiization is ample el, :.:,' t Y Yw4? Yr. rrtY', r
aTr
rrr'rY ' lYtrl YTYtiiTY T r..-;, T,''r 7 "?rr?? Y' K,. y
50 it
T r,?' r rY Y,J?? +'
Y
_t.Y. r?' r•..1 r r,' x Y Y T'
a T rt 7 r?'T?T Yr?r wWtc tr,Yr??yw T"
)
Y r..?orrY .7
200 LF BANKS STABILIZATION rYtS7:07 . '.r?,Y ?x?r• r..rrY. Y,,. r(:YY Y"' Y7jtiY YYY . ?'
;,.; r'.?.? .;'rr'?;? Y,: r,:r.:Y •r tiYrT Y Y . wY,7' ¢„ 7,y7, r?'?'r r.Y, r:.
?i'.;,1"Y,Yr, :T4t1Y\?i: 1 r•.r.yrY?Y,i.r.Yl,,?.?'Y.i rvM)e.'.i'?Y„7"SKY.r'SNy'Vt."?9.'Y^i;'a'?•Yi''}W?y?'+ Y,r}7r7 '?f',??.?Ir ..
}`Y7Y Y r?r Y.Y Y'LY r r.? r I r.,?YYYYWYY
1't , a.. 7...v.'Y r r . wT',..,. : v s , .i Y 4 .,c v..;,.•; .e r i a ry !;rrrrp' Mf. Y
4YY"Y'• ?'7"'s h, A•'4,?, .?Y,,•:..,«. s. .
'Y Y l..r. Y r "Y.vY .Y .r. r
<'•v'•''•r.'+r'.•??'Yr'r?rYf'IY^rrtryi'„;?'•rForested banks to be left as is on south fSIdQY
?Y
f::7:S1?n4rl:SY rY?Y?'e ylJ?7rfY vY\t7y.rtY fy r.KY'Y'1.:r,,.Y. rrr 1 tit\:v. X Tr yrl.tt?.,,S7xrrrtrrry.. Y.Yr.\,rrl?I•rCYt.r?Tr.T.\1rQ:1T\.,,r\.?1?C,rry.Y 1.71 T.rry,L,.1 1'y.T,
r rr w w r x?e' r •f w rY•r r?v''r wwr `?'r7 Y!..f.?'1'.'t r 1 .T. l..T.,L.1 Y_i 7CY'L T„Y I Y.,,f f 'I..?C,.Y r. T ,v .f.T Y .LY 7yS?Y .i r.Y\.?. Y 1
STREAM. RESTORATION *p00 LF
=C:]:Xi.Y.,.; . ',
T? l
,- M1>addrt ilaltf H!1!G 8?+em q???
WnN ?iMb?ly
mowwrhy QwAa ; AA-40 Hw At AMC,
r
'dr1a100INed Mlpadol frpraaloa Aran irenertmd4 Ndk ells '
r r0s r-almae t (.9071. Ouratlan 310001 Flddt wad pla0V0 at 10 10 00 041(00 on11o In10-4p0lroam dlratlon
50 tw
RIM.v 0ootlent (wbbiw:yravel; 11:00 UO and ddanttr00at ffam r00t wa411, W4 (19-1999 1-1-WO -t
pa?e1 f/ar1 (•?[I tlapa wllraval:atntl; Y0?00) y R.ah .001 dellw101
Nollal woor atoaa (9d0n4 oradd ma(IIWA to 94PSO 401d)
.....- _ ...,,?........?...?,.... p101rr1. 59L
5d. Priority bank stabilization areas for HRB3 segment (4701 of bank) Logend shown on figure 6k, and
Section location shown on fl r $
Selective bank clearing only Bank Stabilization Areas (details shown Pig, 5b,& appendix d)
50 "1 where stabltlzbtion Is emplaced;
r-'Y7T7YTt?'f'YY;7.7'rr7YT'Y2Y7:rwW.YC'7r•i-YY''4 Cr71 TTV ,,r'TYTv ;t'YYY^C?•r;L ''IYYY Y. 'Yt t,ar,•YY mi., •rrYYY'ip a YY'Y r1'Yr'T'v Y?Y''t'7 'YT'Y.TY.YY:YYY`YY:r'?1?':'Yr'Y'.T.1Y1??Y,,,7.rY'Y.fYh
atax w.c. r..s..,r. =.r_r.Y,f.r.,..'b..R,'r,T.T.•Y,.•Y:.,T..?W.f, -t ?Y. 1• T. T W..YT.s.r T 4.Y'S'
4`YwY•yPyY,Y?Pi,'Y.y1'77y\;yl.:
rYr:YY'lY?r?1'..,YYY?`r'6Y W.?ax Y,• Tf f.r'i grrYw'Y,Yrisr'S" T t,}.r,?T
470 LF DANK STABILIZATION r' ;} T. Y'r
:•,. Y.r .,,.Yl Forested banks to be left as is on south) side;
i? -
a
q!M
j <-
+ ` r
f ? 1 I ? ? ? N±? ? . ?dl
I/'\ p 1 1
??. \ \??\?l? j' y. ») / )'? ~'?'~-w`?U• _ Guilford County. North Carolina
/R /• /??• !. w.
• •'? ' ?1• ?1 ??.?. ? ?? , 1Koury ventured Liolitpd Pxrtnerehfp
G ??? Leonard R. Rindner, PWS •
r/
i
?I ? Ii?I?.IEi I f

r , 50 too 206 .A.0 4010' ..30q? •:,
PREVIOU111IL ` PE•Ipi11 TTED WTERWTTENT TR43 ?
D •
AOWS
FOURE PARKING
PERENNIAL STREAM I WACT 1560 LF r' ?1
-?, a FUTURE A
1 i FU OAR INO
n n
r L X ,?
91 ^10A
r PET T
1
0.93 ACRES
t ' .r •
i l
1 ?•
TOTAL IIi OACTS 1
.59.ACRES
GRANW VElt
Gnu/brd County, North Carolina
Koury Ventores Limited Partnership
I ; I Uonhrd -S. Rindner, FWS
r PAIL i
COMMERCIAL RETAIL CENTER 'PERMITTING PLAN .
?° V-3
J0411-,
Ild
4,fooe '00"

?X /?t nd:byuPa?c oPePr ?!o? °'?-? eu2 /e?v%?w??
ac o
-? a,? suss
Aoolt
potooof
41
.:......................
......................................................
• • TR 20 SIN
• ` HMVersion 3.40
• TR 20 • Date 9/30/99
• • Time 15:11:21 +
` Project Formulation Hydrology ` Input file GDVR2exb.t2o
• • Output file GDVR2exb.cut
xxxxxxx xxxxxx xxxxx xxxxx
x x x x x x xx
x x x x x x x
x xxxxxx x x x x
x x x x x x x
x x x x xx x
x x x xxxxxxx xxxxx
37 Brookside Road • Waterbury, Connecticut 06708 • [phone]
............ *..... 80-80 LIST OF INPUT DATA FOR TR-20 HYDROLOGY******************
JOB TR-20 FULLPRINT
TITLE 001 GRANDOVER (WEST) COMMERCIAL -
TITLE
3 STRUCT 15
8 770.86
8 771.00
8 772.00
8 773.00
8 774.00
8 775.00
8 775.65
8
9 ENDTBL
3 STRUCT 01
8 798.50
8 799.00
8 799.50
B 800.00
8 800.50
8 801.00
8 801.50
8 802.00
8 802.50
B 803.00
8 803.50
8 804.00
9 ENDTBL
6 RUNOFF 1 001 1 0.09
6 RUNOFF 1 002 2 0.025
6 ADDHYD 4 003 1 2 3
6 RESVOR 2 01 3 4 798.50
6 REACH 3 005 4 5 800.0
6 RUNOFF 1 006 6 0.24
6 RUNOFF 1 007 7 0.10
6 ADDHYD 4 011 6 7 1
6 ADDHYD 4 012 1 5 2
6 RESVOR 2 15 2 3 770.86
6 REACH 3 014 3 4 1200.00
6 RUNOFF 1 015 5 0.14
6 ADDHYD 4 016 4 5 6
ENDATA
7 INCREM 6 0.08
7 COMPUT 7 001 016 0.0
ENDCMP 1
ENDJOB 2
10
POST-DEV. W/PONDS 2 YR, 09/23/99 20
30
40
0.00 0.00 50
0.04 0.419 60
162.00 3.477 70
458.21 6.654 80
841.78 9.951 90
1296.00 13.370 100
1735.68 16.891 110
120
140
290
0.00 0.00 291
0.10 0.70 292
0.68 1.54 293
16.87 2.38 294
46.18 3.39 295
84.03 4.39 296
128.80 5.53 297
179.55 6.67 298
235.63 8.01 299
402.66 9.34 300
662.04 10.93 301
982.86 12.51 302
303
70.00 0.751 1 1 1 360
72.00 0.281 1 1 1 390
1 1 1 1 1 391
1 1 1 1 1 392
1.6 1.441 1 1 1 393
75.00 0.751 1 1 1 394
70.00 0.751 1 1 1 395
1 1 1 1 1 396
1 1 1 1 1 397
1 1 1 1 1 400
0.85 1.381 1 1 1 401
70.00 0.751 1 1 1 402
1 1 1 1 1 403
450
460
3.5 1.02 2 01 01 470
480
490
**...a*rrrrrr..r...aaarr....-END OF 80-80 LIST* *••*.aa.a....aa...aa.a...**r.*.
f'
TR20 XEQ 9/30/99 GRANDOVER (WEST) COMMERCIAL - POST-DEV. W/PONDS 2 YR, 09/23/99 20 JOB 1 PASS 1
REV 09/01/83 30 PAGE 1
FILE NO. 1
COMPUTER PROGRAM FOR PROJECT FORMULATION - HYDROLOGY USER NOTES
THE USERS MANUAL FOR THIS PROGRAM IS THE MAY 1982 DRAFT OF TR-20. CHANGES FROM THE 2/14/74 VERSION INCLUDE:
REACH ROUTING - THE MODIFIED ATT-KIN ROUTING PROCEDURE REPLACES THE CONVEX METHOD. INPUT DATA PREPARED FOR
PREVIOUS PROGRAM VERSIONS USING CONVEX ROUTING COEFFICIENTS WILL NOT RUN ON THIS VERSION.
THE PREFERRED TYPE OF DATA ENTRY IS CROSS SECTION DATA REPRESENTATIVE OF A REACH. IT IS RECOMMENDED THAT
THE OPTIONAL CROSS SECTION DISCHARGE-AREA PLOTS BE OBTAINED WHENEVER NEW CROSS SECTION DATA IS ENTERED.
THE PLOTS SHOULD BE CHECKED FOR REASONABLENESS AND ADEQUACY OF INPUT DATA FOR THE COMPUTATION OF "M"
VALUES USED IN THE ROUTING PROCEDURE.
GUIDELINES FOR DETERMINING OR ANALYZING REACH LENGTHS AND COEFFICIENTS (X,M) ARE AVAILABLE IN THE USERS
MANUAL. SUMMARY TABLE 2 DISPLAYS REACH ROUTING RESULTS AND ROUTING PARAMETERS FOR COMPARISON AND CHECKING.
HYDROGRAPH GENERATION - THE PROCEDURE TO CALCULATE THE INTERNAL TIME INCREMENT AND PEAK TIME OF THE UNIT
HYDROGRAPH HAVE BEEN IMPROVED. PEAK DISCHARGES AND TIMES MAY DIFFER FROM THE PREVIOUS VERSION. OUTPUT
HYDROGRAPHS ARE STILL INTERPOLATED, PRINTED, AND ROUTED AT THE USER SELECTED MAIN TIME INCREMENT.
INTERMEDIATE PEAKS - METHOD ADDED TO PROVIDE DISCHARGES AT INTERMEDIATE POINTS WITHIN REACHES WITHOUT ROUTING.
OTHER - THIS VERSION CONTAINS SOME ADDITIONS TO THE INPUT AND NUMEROUS MODIFICATIONS TO THE OUTPUT. USER
OPTIONS HAVE BEEN MODIFIED AND AUGMENTED ON THE JOB RECORD, RAINTABLES ADDED, ERROR AND WARNING MESSAGES
EXPANDED, AND THE SUMMARY TABLES COMPLETELY REVISED. THE HOLDOUT OPTION IS NOT OPERATIONAL AT THIS TIME.
PROGRAM QUESTIONS OR PROBLEMS SHOULD BE DIRECTED TO HYDRAULIC ENGINEERS AT THE SCS NATIONAL TECHNICAL CENTERS:
CHESTER, PA (NORTHEAST) -- 215-499-3933, FORT WORTH, TX (SOUTH) -- 334-5242 (FTS)
LINCOLN, NB (MIDWEST) -- 541-5318 (FTS), PORTLAND, OR (WEST) -- 423-4099 (FTS)
OR HYDROLOGY UNIT, ENGINEERING DIVISION, LANHAM, MD -- 436-7383 (FTS).
PROGRAM CHANGES SINCE MAY 1982:
12/17/82 - CORRECT PEAK RATE FACTOR FOR USER ENTERED DIMHYD
CORRECT REACH ROUTING PEAK TRAVEL TIME PRINTED WITH FULLPRINT OPTION
5/02/83 - CORRECT COMPUTATIONS FOR ---
1. DIVISION OF BASEFLOW IN DIVERT OPERATION
2. HYDROGRAPH VOLUME SPLIT BETWEEN BASEFLOW AND ABOVE BASEFLOW
3. CROSS SECTION DATA PLOTTING POSITION
4. INTERMEDIATE PEAK WHEN "FROM" AREA IS LARGER THAN "THRU" AREA
5. STORAGE ROUTED REACH TRAVEL TIME FOR MULTIPEAK HYDROGRAPH
6. ORDERING "FLOW-FREQ" FILE FROM SUMMARY TABLE #3 DATA
7. BASEFLOW ENTERED WITH READHYD
8. LOW FLOW SPLIT DURING DIVERT PROCEDURE #2 WHEN SECTION RATINGS START AT DIFFERENT ELEVATIONS
ENHANCEMENTS ---
1. REPLACE USER MANUAL ERROR CODES (PAGE 4-9 TO 4-11) WITH MESSAGES
2. LABEL OUTPUT HYDROGRAPH FILES WITH CROSS SECTION/STRUCTURE, ALTERNATE AND STORM NO'S
09/01/83 - CORRECT INPUT AND OUTPUT ERRORS FOR INTERMEDIATE PEAKS
CORRECT COMBINATION OF RATING TABLES FOR DIVERT
CHECK REACH ROUTING PARAMETERS FOR ACCEPTABLE LIMITS
ELIMINATE MINIMUM REACH TRAVEL TIME WHEN A77-KIN COEFFICIENT EQUALS ONE
TR20 XEQ 9/30/99 GRANDOVER (WEST) COMMERCIAL - POST-DEV. W/PONDS 2 YR, 09/23/99 20 JOB 1 PASS 1
REV 09/01/83 30 PAGE 2
EXECUTIVE CONTROL OPERATION INCREM MAIN TIME. INCREMENT = .08 HOURS RECORD ID 460
EXECUTIVE CONTROL OPERATION COMPUT FROM XSECTION 1 TO XSECTION 16 RECORD ID 470
STARTING TIME . .00 RAIN DEPTH . 3.50 RAIN DURATION- 1.00 RAIN TABLE NO.= 2 ANT. MOIST. COND- 2
ALTERNATE NO.. 1 STORM NO.. 1 MAIN TIME INCREMENT . .08 HOURS
OPERATION RUNOFF CROSS SECTION 1
OUTPUT HYDROGRAPH- 1
AREA= .09 SQ MI INPUT RUNOFF CURVE= 70. TIME OF CONCENTRATION= .75 HOURS
INTERNAL HYDROGRAPH TIME INCREMENT. .0833 HOURS
PEAK TIME(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET)
12.39 33.45 (RUNOFF)
TIME(HRS) FIRST HYDROGRAPH POINT . .00 HOURS TIME INCREMENT . .08 HOURS DRAINAGE AREA . .09 SQ.MI.
11.20 DISCHG .00 .01 .02 .06 .13 .30 .66 1.37 2.86 5.63
12.00 DISCHG 10.25 16.55 23.41 29.28 32.62 33.44 32.29 29.67 26.30 22.85
12.80 DISCHG 19.96 17.65 15.75 14.15 12.77 11.61 10.60 9.73 8.99 8.35
13.60 DISCHG 7.79 7.30 6.87 6.47 6.12 5.81 5.53 5.27 5.03 4.82
14.40 DISCHG 4.63 4.46 4.31 4.16 4.01 3.87 3.74 3.62 3.52 3.43
15.20 DISCHG 3.37 3.31 3.27 3.23 3.18 3.12 3.06 3.00 2.94 2.90
16.00 DISCHG 2.86 2.83 2.81 2.80 2.79 2.79 2.78 2.78 2.77 2.75
16.80 DISCHG 2.71 2.66 2.61 2.56 2.51 2.47 2.44 2.42 2.40 2.39
17.60 DISCHG 2.38 2.38 2.37 2.36 2.35 2.32 2.28 2.23 2.17 2.12
18.40 DISCHG 2.07 2.03 2.00 1.98 1.96 1.95 1.94 1.94 1.93 1.93
19.20 DISCHG 1.93 1.93 1.93 1.93 1.93 1.93 1.93 1.93 1.93 1.91
20.00 DISCHG 1.89 1.84 1.79 1.73 1.68 1.63 1.59 1.56 1.54 1.52
20.80 DISCHG 1.51 1.50 1.49 1.49 1.48 1.48 1.48 1.48 1.47 1.47
21.60 DISCHG 1.47 1.47 1.47 1.47 1.48 1.48 1.48 1.48 1.48 1.48
22.40 DISCHG 1.48 1.48 1.48 1.48 1.48 1.49 1.49 1.49 1.49 1.49
23.20 DISCHG 1.49 1.49 1.49 1.49 1.49 1.49 1.50 1.50 1.49 1.48
RUNOFF VOLUME ABOVE BASEFLOW = .99 WATERSHED INCHES, 57.59 CFS-HRS, 4.76 ACRE-FEET; HASEFLOW = .00 CFS
OPERATION RUNOFF CROSS SECTION 2
OUTPUT HYDROGRAPH= 2
AREA= .03 SO MI INPUT RUNOFF CURVE. 72. TIME OF CONCENTRATION- .28 HOURS
INTERNAL HYDROGRAPH TIME INCREMENT= .0373 HOURS
PEAK TIME(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET)
12.09 19.28 (RUNOFF)
TIME(HRS) FIRST HYDROGRAPH POINT - .00 HOURS TIME INCREMENT = .08 HOURS DRAINAGE AREA . .03 SQ.MI.
10.40 DISCHG .00 .00 .00 .00 .00 .00 .00 .01 .03 .06
11.20 DISCHG .11 .16 .22 .30 .41 .76 1.65 2.84 5.09 9.90
12.00 DISCHG 15.86 19.26 16.73 11.72 8.19 6.15 4.80 4.03 3.54 3.19
TR20 XEQ 9/30/99 GRANDOVER (WEST) COMMERCIAL - POST-DEV. W/PONDS 2 YR, 09/23/99 20 JOB 1 PASS 1
REV 09/01/83 30 PAGE 3
12.80 DISCHG 2.96 2.75 2.53 2.37 2.24 2.10 1.99 1.91 1.81 1.73
13.60 DISCHG 1.67 1.58 1.50 1.45 1.39 1.35 1.32 1.27 1.23 1.20
14.40 DISCHG 1.16 1.11 1.08 1.04 .99 .96 .95 .94 .94 .94
15.20 DISCHG .94 .94 .92 .88 .85 .83 .82 .82 .82 .82
16.00 DISCHG .82 .82 .82 .82 .82 .82 .82 .82 .79 .75
16.80 DISCHG .72 .71 .70 .70 .70 .70 .70 .70 .70 .70
17.60 DISCHG .70 .70 .70 .69 .65 .61 .58 .57 .57 .57
18.40 DISCHG .57 .56 .57 .57 .57 .57 .57 .57 .57 .57
19.20 DISCHG .57 .57 .57 .57 .57 .57 .57 .57 .56 .52
20.00 DISCHG .48 .45 .44 .44 .43 .43 .43 .43 .43 .43
20.80 DISCHG .43 .43 .43 .43 .43 .43 .43 .43 .43 .43
21.60 DISCHG .44 .44 .44 .44 .44 .44 .44 .44 .44 .44
22.40 DISCHG .44 .44 .44 .44 .44 .44 .44 .44 .44 .44
23.20 DISCHG .44 .44 .44 .44 .44 .44 .44 .44 .43 .39
RUNOFF VOLUME ABOVE BASEFLOW - 1.11 WATERSHED INCHES, 17.96 CFS-HRS, 1.48 ACRE-FEET; BASEFLOW - .00 CFS
OPERATION ADDHYD CROSS SECTION 3
INPUT HYDROGRAPHS= 1,2 OUTPUT HYDROGRAPH= 3
...ELEVATION OUTPUT OPTION REQUESTED BUT NO ELEVATIONS GIVEN-
PEAK TIME(HRS) PEAK DISCRARGE(CFS) PEAK ELEVATION(FEET)
12.27 41.05 (NULL)
TIME(HRS) FIRST HYDROGRAPH POINT .00 HOURS TIME INCREMENT = .08 HOURS DRAINAGE AREA .12 SQ.MI.
10.40 DISCHG .00 .00 .00 .00 .00 .00 .00 .01 .03 .06
11.20 DISCHG .11 .17 .25 .36 .54 1.06 2.31 4.21 7.96 15.53
12.00 DISCHG 26.11 35.81 40.14 40.99 40.81 39.59 37.09 33.70 29.85 26.04
12.80 DISCHG 22.92 20.40 18.28 16.52 15.01 13.71 12.60 11.64 10.80 10.08
13.60 DISCHG 9.46 8.88 8.37 7.92 7.52 7.16 6.85 6.54 6.26 6.02
14.40 DISCHG 5.79 5.58 5.39 5.20 5.01 4.84 4.69 4.56 4.46 4.37
15.20 DISCHG 4.31 4.25 4.19 4.11 4.02 3.95 3.8B 3.82 3.76 3.71
16.00 DISCHG 3.68 3.65 3.63 3.62 3.61 3.61 3.61 3.60 3.56 3.49
16.80 DISCHG 3.43 3.37 3.31 3.26 3.21 3.17 3.14 3.11 3.10 3.09
17.60 DISCHG 3.08 3.07 3.07 3.05 3.00 2.93 2.86 2.80 2.74 2.68
18.40 DISCHG 2.64 2.60 2.57 2.55 2.53 2.52 2.51 2.50 2.50 2.50
19.20 DISCHG 2.50 2.50 2.50 2.50 2.50 2.50 2.50 2.50 2.48 2.43
20.00 DISCHG 2.36 2.30 2.23 2.17 2.11 2.06 2.02 1.99 1.97 1.95
20.80 DISCHG 1.94 1.93 1.92 1.92 1.91 1.91 1.91 1.91 1.91 1.91
21.60 DISCHG 1.91 1.91 1.91 1.91 1.91 1.91 1.91 1.91 1.92 1.92
22.40 DISCHG 1.92 1.92 1.92 1.92 1.92 1.92 1.92 1.93 1.93 1.93
23.20 DISCHG 1.93 1.93 1.93 1.93 1.93 1.94 1.94 1.94 1.92 1.86
RUNOFF VOLUME ABOVE BASEFLOW 1.02 WATERSHED INCHES, 75.55 CFS-HRS, 6.24 ACRE-FEET; BASEFLOW = .00 CFS
0PERATION RESVOR STRUCTURE 1
TR20 XEQ 9/30/99 GRANDOVER (WEST) COMMERCIAL - POST-DEV. W/PONDS 2 YR, 09/23/99 20 JOB 1 PASS 1
REV 09/01/83 30 PAGE 4
INPUT HYDROGRAPH- 3 OUTPUT HYDROGRAPH- 4
SURFACE ELEVATION- 798.50
PEAK TIME(HRS)
13.05
TIME(HRS) FIRST HYDRON
11.20 DISCHG .00
11.20 ELEV 798.50
12.00 DISCHG .04
12.00 ELEV 798.72
12.80 DISCHG 14.95
12.80 ELEV 799.94
13.60 DISCHG 13.72
13.60 ELEV 799.90
14.40 DISCHG 8.84
14.40 ELEV 799.75
15.20 DISCHG 5.90
15.20 ELEV 799.66
16.00 DISCHG 4.46
16.00 ELEV 799.62
16.80 DISCHG 3.82
16.80 ELEV 799.60
17.60 DISCHG 3.35
17.60 ELEV 799.58
18.40 DISCHG 2.99
18.40 ELEV 799.57
19.20 DISCHG 2.65
19.20 ELEV 799.56
20.00 DISCHG 2.52
20.00 ELEV 799.56
20.80 DISCHG 2.18
20.80 ELEV 799.55
21.60 DISCHG 1.99
21.60 ELEV 799.54
22.40 DISCHG 1.93
22.40 ELEV 799.54
23.20 DISCHG 1.93
23.20 ELEV 799.54
PEAK DISCRARGE(CFS) PEAK ELEVATION(FEET)
16.33 799.98
3RAPH POINT - .00 HOURS TIME INCREMENT - .08 HOURS
.00 .00 .00 .00 .00 .00
798.50 798.50 798.50 798.50 798.50 798.50
.07 .14 .32 .51 .90 5.39
798.86 799.03 799.19 799.35 799.51 799.65
15.76 16.18 16.33 16.26 16.04 15.69
799.97 799.98 799.98 799.98 799.97 799.96
13.17 12.63 12.09 11.57 11.06 10.58
799.89 799.87 799.85 799.84 799.82 799.81
8.46 8.11 7.77 7.45 7.15 6.86
799.74 799.73 799.72 799.71 799.70 799.69
5.71 5.53 5.36 5.21 5.06 4.92
799.66 799.65 799.64 799.64 799.64 799.63
4.36 4.28 4.20 4.13 4.07 4.01
799.61 799.61 799.61 799.61 799.60 799.60
3.77 3.72 3.67 3.61 3.56 3.51
799.60 799.59 799.59 799.59 799.59 799.59
3.32 3.29 3.26 3.23 3.20 3.16
799.58 799.58 799.58 799.58 799.58 799.58
2.95 2.90 2.86 2.82 2.79 2.75
799.57 799.57 799.57 799.57 799.57 799.56
2.63 2.62 2.60 2.59 2.58 2.57
799.56 799.56 799.56 799.56 799.56 799.56
2.50 2.47 2.44 2.40 2.37 2.33
799.56 799.56 799.55 799.55 799.55 799.55
2.16 2.13 2.10 2.08 2.06 2.04
799.55 799.54 799.54 799.54 799.54 799.54
1.96 1.97 1.96 1.96 1.95 1.95
799.54 799.54 799.54 799.54 799.54 799.54
1.93 1.93 1.93 1.93 1.93 1.93
799.54 799.54 799.54 799.54 799.54 799.54
1.93 1.93 1.93 1.93 1.93 1.93
799.54 799.54 799.54 799.54 799.54 799.54
DRAINAGE AREA
.01 .01
798.53 798.56
8.98 11.71
799.76 799.84
15.26 14.78
799.95 799.94
10.11 9.67
799.79 799.78
6.59 6.34
799.68 799.67
4.79 4.67
799.63 799.62
3.96 3.92
799.60 799.60
3.47 3.42
799.59 799.58
3.12 3.08
799.58 799.57
2.72 2.70
799.56 799.56
2.56 2.55
799.56 799.56
2.29 2.25
799.55 799.55
2.03 2.01
799.54 799.54
1.94 1.94
799.54 799.54
1.93 1.93
799.54 799.54
1.93 1.93
799.54 799.54
.12 SQ.MI.
.02
798.62
13.66
799.90
14.26
799.92
9.24
799.76
6.11
799.67
4.56
799.62
3.87
799.60
3.38
799.58
3.04
799.57
2.67
799.56
2.54
799.56
2.22
799.55
2.00
799.54
1.94
799.54
1.93
799.54
1.93
799.54
RUNOFF VOLUME ABOVE BASEFLOW = .76 WATERSHED INCHES, 56.10 CFS-HRS, 4.64 ACRE-FEET; BASEFLOW = .00 CFS
OPERATION REACH CROSS SECTION 5
INPUT HYDROGRAPH= 4 OUTPUT HYDROGRAPH= 5
LENGTH = 800.00 FEET INPUT - COEFFICIENTS RELATED TO CROSS SECTIONAL AREA, X. 1.60, M= 1.44
MODIFIED ATT-KIN ROUTING COEFFICIENT - .92 PEAK TRAVEL TIME _ .08 HOURS
- WARNING REACH 5 ATT-KIN COEFF.(C) GREATER THAN 0.667, CONSIDER REDUCING MAIN TIME INCREMENT .•'
••' WARNING - REACH 5 INFLOW HYDROGRAPH VOLUME TRUNCATED ABOVE BASEFLOW AT 1.93 CFS, 11.79 % OF PEAK.
TR20 XEQ 9/30/99 GRANDOVER (WEST) COMMERCIAL - POST-DEV. W/PONDS 2 YR, 09/23/99 20 JOB 1 PASS 1
REV 09/01/83 30 PAGE 6
22.40 DISCHG 4.54 4.55 4.55 4.55 4.55 4.56 4.56 4.56 4.56 4.56
23.20 DISCHG 4.57 4.57 4.57 4.57 4.57 4.58 4.58 4.58 4.56 4.52
RUNOFF VOLUME ABOVE BASEFLOW - 1.28 WATERSHED INCHES, 198.68 CFS-HRS, 16.42 ACRE-FEET; BASEFLOW = .00 CPS
OPERATION RUNOFF CROSS SECTION 7
OUTPUT HYDROGRAPH= 7
AREA- .10 SQ MI INPUT RUNOFF CURVE. 70. TIME OF CONCENTRATION- .75 HOURS
INTERNAL HYDROGRAPH TIME INCREMENT= .0833 HOURS
PEAK TIME(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET)
12.39 37.16 (RUNOFF)
TIME(HRS) FIRST HYDROGRAPH POINT .00 HOURS TIME INCREMENT - .08 HOURS DRAINAGE AREA .10 SQ.MI.
11.20 DISCHG .00 .01 .03 .06 .14 .34 .74 1.52 3.18 6.26
12.00 DISCHG 11.39 18.39 26.01 32.53 36.24 37.16 35.88 32.97 29.22 25.39
12.80 DISCHG 22.17 19.61 17.50 15.72 14.19 12.90 11.78 10.82 9.99 9.28
13.60 DISCHG 8.66 8.11 7.63 7.19 6.80 6.46 6.14 5.86 5.59 5.35
14.40 DISCHG 5.14 4.96 4.79 4.62 4.46 4.30 4.16 4.02 3.91 3.82
15.20 DISCHG 3.74 3.68 3.63 3.58 3.53 3.47 3.40 3.33 3.27 3.22
16.00 DISCHG 3.18 3.15 3.13 3.11 3.10 3.10 3.09 3.09 3.07 3.05
16.80 DISCHG 3.01 2.96 2.90 2.84 2.79 2.75 2.71 2.69 2.67 2.66
17.60 DISCHG 2.65 2.64 2.63 2.63 2.61 2.58 2.53 2.47 2.41 2.35
18.40 DISCHG 2.30 2.26 2.22 2.20 2.18 2.17 2.16 2.15 2.15 2.14
19.20 DISCHG 2.14 2.14 2.14 2.14 2.14 2.14 2.14 2.14 2.14 2.12
20.00 DISCHG 2.10 2.05 1.99 1.93 1.87 1.81 1.77 1.73 1.71 1.69
20.80 DISCHG 1.68 1.66 1.66 1.65 1.65 1.64 1.64 1.64 1.64 1.64
21.60 DISCHG 1.64 1.64 1.64 1.64 1.64 1.64 1.64 1.64 1.64 1.64
22.40 DISCHG 1.64 1.65 1.65 1.65 1.65 1.65 1.65 1.65 1.65 1.65
23.20 DISCHG 1.66 1.66 1.66 1.66 1.66 1.66 1.66 1.66 1.66 1.64
RUNOFF VOLUME ABOVE BASEFLOW = .99 WATERSHED INCHES, 63.99 CFS-HRS, 5.29 ACRE-FEET; BASEFLOW - .00 CFS
OPERATION ADDHYD CROSS SECTION 11
INPUT HYDROGRAPHS- 6,7 OUTPUT HYDROGRAPH= 1
-ELEVATION OUTPUT OPTION REQUESTED BUT NO ELEVATIONS GIVEN-
PEAK TIME(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET)
12.38 159.43 (NULL)
19.72 8.10 (NULL)
TIME(HRS) FIRST HYDROGRAPH POINT = .00 HOURS TIME INCREMENT - .08 HOURS DRAINAGE AREA - .34 SQ.MI.
10.40 DISCHG .01 .02 .05 .10 .19 .31 .48 .69 .95 1.26
11.20 DISCHG 1.62 2.05 2.55 3.14 3.92 5.28 7.70 11.97 20.22 34.43
12.00 DISCHG 56.86 86.43 117.69 143.48 157.13 159.06 151.99 138.41 121.74 105.06
12.80 DISCHG 91.18 80.16 71.11 63.50 57.04 51.58 46.91 42.89 39.45 36.53
13.60 DISCHG 33.99 31.76 29.79 28.03 26.47 25.06 23.81 22.66 21.61 20.66
TR20 XEQ 9/30/99 GRANDOVER (WEST) COMMERCIAL - POST-DEV. W/PONDS 2 YR, 09/23/99 20 JOB 1 PASS 1
REV 09/01/83 30 PAGE 7
14.40 DISCHG 19.83 19.11 18.43 17.78 17.15 16.54 15.97 15.45 15.01 14.64
15.20 DISCHG 14.34 14.11 13.92 13.73 13.51 13.26 13.00 12.74 12.50 12.30
16.00 DISCHG 12.14 12.02 11.94 11.88 11.84 11.81 11.79 11.76 11.71 11.62
16.80 DISCHG 11.47 11.27 11.04 10.82 10.62 10.45 10.31 10.21 10.14 10.09
17.60 DISCHG 10.05 10.02 10.00 9.97 9.90 9.79 9.60 9.38 9.14 8.92
18.40 DISCHG 8.72 8.55 8.43 8.34 8.27 8.22 8.18 8.15 8.13 8.11
19.20 DISCHG 8.10 8.10 8.09 8.09 8.09 8.10 8.10 8.10 8.08 8.03
20.00 DISCHG 7.92 7.74 7.51 7.27 7.04 6.84 6.67 6.54 6.45 6.38
20.80 DISCHG 6.32 6.28 6.25 6.22 6.20 6.19 6.18 6.18 6.17 6.17
21.60 DISCHG 6.17 6.17 6.17 6.17 6.17 6.17 6.18 6.18 6.18 6.19
22.40 DISCHG 6.19 6.19 6.20 6.20 6.20 6.21 6.21 6.21 6.21 6.22
23.20 DISCHG 6.22 6.22 6.23 6.23 6.23 6.24 6.24 6.24 6.22 6.16
RUNOFF VOLUME ABOVE BASEFLOW 1.20 WATERSHED INCHES, 262.67 CFS-HRS, 21.71 ACRE-FEET; BASEFLOW - .00 CFS
OPERATION ADDHYD CROSS SECTION 12
INPUT HYDROGRAPHS= 1,5 OUTPUT HYDROGRAPH- 2
...ELEVATION OUTPUT OPTION REQUESTED BUT NO ELEVATIONS GIVEN-
PEAK TIME(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET)
12.38 159.85 (NULL)
TIME(HRS) FIRST HYDROGRAPH POINT .00 HOURS TIME INCREMENT - .08 HOURS DRAINAGE AREA - .46 SQ.MI.
10.40 DISCHG .01 .02 .05 .10 .19 .31 .48 .69 .95 1.26
11.20 DISCHG 1.62 2.05 2.55 3.14 3.92 5.28 7.70 11.97 20.23 34.44
12.00 DISCHG 56.88 86.47 117.76 143.61 157.44 159.55 152.86 143.41 130.38 116.51
12.80 DISCHG 104.65 94.98 86.79 79.64 73.35 67.85 62.96 58.61 54.75 51.35
13.60 DISCHG 48.29 45.53 43.02 40.71 38.61 36.68 34.92 33.28 31.76 30.37
14.40 DISCHG 29.11 27.99 26.93 25.92 24.95 24.02 23.15 22.34 21.62 21.00
15.20 DISCHG 20.48 20.03 19.64 19.27 18.89 18.48 18.07 17.67 17.31 16.98
16.00 DISCHG 16.71 16.49 16.31 16.16 16.04 15.94 15.86 15.78 15.68 15.54
16.80 DISCHG 15.34 15.09 14.82 14.54 14.29 14.07 13.88 13.73 13.61 13.52
17.60 DISCHG 13.44 13.37 13.32 13.26 13.17 13.02 12.81 3.2.55 12.27 12.00
18.40 DISCHG 11.76 11.55 11.38 11.24 11.13 11.04 10.97 10.90 10.85 10.81
19.20 DISCHG 10.78 10.75 10.73 10.71 10.70 10.69 10.68 10.67 10.64 10.58
20.00 DISCHG 10.46 10.26 10.01 9.75 9.49 9.25 9.04 8.87 8.74 8.63
20.80 DISCHG 8.54 8.46 8.40 8.35 8.31 8.27 8.25 8.22 8.20 8.18
21.60 DISCHG 8.17 8.16 8.15 8.14 8.14 8.13 8.13 8.13 8.13 8.13
22.40 DISCHG 8.13 8.13 8.13 8.13 8.13 8.13 8.14 8.14 8.14 8.15
23.20 DISCHG 8.15 8.15 8.15 8.16 8.16 8.17 8.17 8.17 8.15 8.09
RUNOFF VOLUME ABOVE BASEFLOW = 1.09 WATERSHED INCHES, 318.65 CFS-HRS, 26.33 ACRE-FEET; BASEFLOW = .00 CPS
OPERATION RESVOR STRUCTURE 15
INPUT HYDROGRAPH- 2 OUTPUT HYDROGRAPH- 3
SURFACE ELEVATION= 770.86
TR20 XEQ 9/30/99
REV 09/01/83
PEAK TIME(HRS)
12.61
TIME(HRS) FIRST HYDRO
11.20 DISCHG .00
11.20 ELEV 770.86
12.00 DISCHG 17.03
12.00 ELEV 771.10
12.80 DISCHG 125.32
12.80 ELEV 771.77
13.60 DISCHG 60.14
13.60 ELEV 771.37
14.40 DISCHG 33.72
14.40 ELEV 771.21
15.20 DISCHG 22.55
15.20 ELEV 771.14
16.00 DISCHG 17.71
16.00 ELEV 771.11
16.80 DISCHG 15.76
16.80 ELEV 771.10
17.60 DISCHG 13.81
17.60 ELEV 771.09
18.40 DISCHG 12.41
18.40 ELEV 771.08
19.20 DISCHG 10.96
19.20 ELEV 771.07
20.00 DISCHG 10.63
20.00 ELEV 771.07
20.80 DISCHG 8.93
20.80 ELEV 771.05
21.60 DISCHG 8.24
21.60 ELEV 771.05
22.40 DISCHG 8.13
22.40 ELEV 771.05
23.20 DISCHG 8.14
23.20 ELEV 771.05
GRANDOVER (WEST) COMMERCIAL - POST-DEV. W/PONDS 2 YR, 09/23/99 20
30
;RAPH POINT
.00
770.86
33.31
771.21
117.72
771.73
56.20
771.35
32.18
771.20
21.86
771.13
17.38
771.11
15.60
771.10
13.69
771.08
12.19
771.08
10.90
771.07
10.55
771.06
8.81
771.05
8.22
771.05
8.13
771.05
8.14
771.05
PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET)
135.25 771.83
.00 HOURS TIME INCREMENT - . 08 HOURS
.01 .01 .01 .01 .02
770.88 770.89 770.89 770.90 770.92
53.82 76.72 98.72 116.53 128.35
771.33 771.47 771.61 771.72 771.79
109.72 101.82 94.28 87.22 80.72
771.68 771.63 771.58 771.54 771.50
52.64 49.43 46.52 43.88 41.47
771.32 771.30 771.29 771.27 771.26
30.78 29.48 28.27 27.15 26.08
771.19 771.18 771.17 771.17 771.16
21.26 20.72 20.23 19.77 19.33
771.13 771.13 771.12 771.12 771.12
17.09 16.83 16.62 16.43 16.27
771.11 771.10 771.10 771.10 771.10
15.41 15.19 14.96 14.73 14.50
771.09 771.09 771.09 771.09 771.09
13.59 13.50 13.41 13.32 13.20
771.08 771.08 771.08 771.08 771.08
11.97 11.77 11.60 11.45 11.31
771.07 771.07 771.07 771.07 771.07
10.85 10.81 10.78 10.75 10.73
771.07 771.07 771.07 771.07 771.07
10.43 10.26 10.07 9.86 9.65
771.06 771.06 771.06 771.06 771.06
8.69 8.60 8.52 8.45 8.39
771.05 771.05 771.05 771.05 771.05
8.20 8.18 8.17 8.16 8.15
771.05 771.05 771.05 771.05 771.05
8.13 8.13 8.13 8.13 8.13
771.05 771.05 771.05 771.05 771.05
8.15 8.15 8.15 8.16 6.16
771.05 771.05 771.05 771.05 771,05
DRAINAGE AREA -
.02 .03
770.94 770.98
134.25 135.04
771.83 771.83
74.78 69.38
771.46 771.43
39.27 37.26
771.24 771.23
25.09 24.16
771.15 771.15
18.89 18.47
771.12 771.11
16.14 16.02
771.10 771.10
14.29 14.11
771.09 771.09
13.04 12.85
771.08 771.08
11.20 11.11
771.07 771.07
10.72 10.70
771.07 771.07
9.44 9.25
771.06 771.06
8.35 8.31
771.05 771.05
8.14 8.14
771.05 771.05
8.13 8.14
771.05 771.05
8.16 8.16
771.05 771.05
JOB 1 PASS 1
PAGE 8
.46 SQ.MI.
4.88
771.03
131.58
771.81
64.52
771.40
35.41
771.22
23.31
771.14
18.08
771.11
15.89
771.10
13.95
771.09
12.64
771.08
11.02
771.07
10.67
771.07
9.08
771.06
8.27
771.05
8.14
771.05
8.14
771.05
8.15
771.05
RUNOFF VOLUME ABOVE BASEFLOW - 1.06 WATERSHED INCHES, 311.70 CFS-HRS, 25.76 ACRE-FEET; BASEFLOW - .00 CFS
OPERATION REACH CROSS SECTION 14
INPUT HYDROGRAPH= 3 OUTPUT HYDROGRAPH- 4
LENGTH = 1200.00 FEET INPUT - COEFFICIENTS RELATED TO CROSS SECTIONAL AREA, X. .85, M- 1.38
MODIFIED ATT-KIN ROUTING COEFFICIENT = .72 PEAK TRAVEL TIME _ .08 HOURS
.*. WARNING REACH 14 ATT-KIN COEFF.(C) GREATER THAN 0.667, CONSIDER REDUCING MAIN TIME INCREMENT •..
PEAK TIME(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET)
12.73 134.01 (NULL)
TR20 XEQ 9/30/99 GRANDOVER (WEST) COMMERCIAL - POST-DEV. W/PONDS 2 YR, 09/23/99 20
REV 09/01/83 30
OPERATION ADDHYD CROSS SECTION 16
INPUT HYDROGRAPHS= 4,5 OUTPUT HYDROGRAPH= 6
—ELEVATION OUTPUT OPTION REQUESTED BUT NO ELEVATIONS GIVEN-
JOB 1 PASS 1
PAGE 10
PEAK TIME(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET)
12.64 172.10 (NULL)
TIME(HRS) FIRST HYDROGRAPH POINT .00 HOURS TIME INCREMENT - .08 HOURS DRAINAGE AREA .60 SQ.MI.
11.20 DISCHG .00 .01 .04 .09 .21 .48 1.04 2.14 4.47 8.79
12.00 DISCHG 19.49 39.06 64.22 92.20 119.18 142.40 159.56 169.27 172.09 169.52
12.80 DISCHG 163.28 154.69 144.84 134.65 124.67 115.23 106.46 98.41 91.09 84.50
13.60 DISCHG 78.56 73.23 68.44 64.12 60.23 56.71 53.52 50.62 47.97 45.55
14.40 DISCHG 43.34 41.33 39.49 37.80 36.23 34.77 33.41 32.13 30.95 29.87
15.20 DISCHG 28.88 28.00 27.22 26.52 25.68 25.28 24.71 24.16 23.64 23.14
16.00 DISCHG 22.68 22.26 21.89 21.56 21.28 21.04 20.83 20.66 20.49 20.33
16.80 DISCHG 20.16 19.95 19.72 19.46 19.18 18.89 18.61 18.35 18.11 17.90
17.60 DISCHG 17.71 17.56 17.42 17.30 17.19 17.06 16.90 16.70 16.47 16.21
18.40 DISCHG 15.94 15.66 15.38 15.13 14.91 14.70 14.53 14.38 14.25 14.14
19.20 DISCHG 14.06 13.98 13.92 13.87 13.83 13.79 13.76 13.74 13.72 13.68
20.00 DISCHG 13.62 13.51 13.36 13.16 12.93 12.67 12.41 12.15 11.91 11.69
20.80 DISCHG 11.49 11.32 11.18 11.05 10.94 10.85 10.78 10.71 10.66 10.61
21.60 DISCHG 10.58 10.55 10.52 10.50 10.48 10.47 10.46 10.45 10.45 10.44
22.40 DISCHG 10.44 10.44 10.44 10.44 10.44 10.44 10.44 10.44 10.45 10.45
23.20 DISCHG 10.45 10.46 10.46 10.47 10.47 10.48 10.48 10.48 10.48 10.46
RUNOFF VOLUME ABOVE BASEFLOW 1.04 WATERSHED INCHES, 400.39 CFS-HRS, 33.09 ACRE-FEET; BASEFLOW = .00 CPS
EXECUTIVE CONTROL OPERATION ENDCMP COMPUTATIONS COMPLETED FOR PASS 1 RECORD ID 480
EXECUTIVE CONTROL OPERATION ENDJOB RECORD ID 490
TR20 XEQ 9/30/99 GRANDOVER (WEST) COMMERCIAL - POST-DEV. W/PONDS 2 YR, 09/23/99 20 JOB 1 SUMMARY
REV 09/01/83 30 PAGE 11
SUMMARY TABLE 1 - SELECTED RESULTS OF STANDARD AND EXECUTIVE CONTROL INSTRUCTIONS IN THE ORDER PERFORMED
(A STAR(') AFTER THE PEAK DISCHARGE TIME AND RATE ( CPS) VALUES INDICATES A FLAT TOP HYDROGRAPH
A QUESTION MARK(?) INDICATES A HYDROGRAPH WITH PEA K AS LAST POINT.)
SECTION/ STANDARD RAIN ANTEC MAIN PRECIPITA TION PEAK DISCHARGE
STRUCTURE CONTROL DRAINAGE TABLE MOIST TIME ------- -------- ----- ----- RUNOFF ----------------- -------- ----- --------
ID OPERATION AREA # COND INCREM BEGIN AMOUNT DUR ATION AMOUNT ELEVATION TIME RATE RATE
(SQ MI) (HR) (HR) (IN) ( HR) (IN) (FT) (HR) (CFS) (CSM)
ALTERNATE 1 STORM 1
XSECTION 1 RUNOFF .09 2 2 .08 .0 3.50 24 .00 .99 --- 12.39 33 .45 371.6
XSECTION 2 RUNOFF .03 2 2 .08 .0 3.50 24 .00 1.11 --- 12.09 19 .28 771.2
XSECTION 3 ADDHYD .12 2 2 .08 .0 3.50 24 .00 1.02 --- 12.27 41 .05 356.9
STRUCTURE 1 RESVOR .12 2 2 .08 .0 3.50 24 .00 .76 799.98 13.05 16 .33 142.0
XSECTION 5 REACH .12 2 2 .08 .0 3.50 24. 00 .75 --- 13.14 16 .32 141.9
XSECTION 6 RUNOFF .24 2 2 .08 .0 3.50 24. 00 1.28 --- 12.37 122 .32 509.7
XSECTION 7 RUNOFF .10 2 2 .08 .0 3.50 24. 00 .99 --- 12.39 37 .16 371.6
XSECTION 11 ADDHYD .34 2 2 .08 .0 3.50 24. 00 1.20 --- 12.38 159. 43 468.9
XSECTION 12 ADDHYD .46 2 2 .08 .0 3.50 24. 00 1.09 --- 12.38 159. 85 351.3
STRUCTURE 15 RESVOR .46 2 2 .08 .0 3.50 24. 00 1.06 771.83 12.61 135. 25 297.2
XSECTION 14 REACH .46 2 2 .08 .0 3.50 24. 00 1.06 --- 12.73 134. 01 294.5
XSECTION 15 RUNOFF .14 2 2 .08 .0 3.50 24. 00 .99 --- 12.39 52. 03 371.6
XSECTION 16 ADDHYD .60 2 2 .08 .0 3.50 24. 00 1.04 --- 12.64 172. 10 289.2
TR20 XEQ 9/30/99 GRANDOVER (WEST) COMMERCIAL - POST-DEV. W/PONDS 2 YR, 09/23/99 20 JOB 1 SUMMARY
REV 09/01/83 30 PAGE 12
SUMMARY TABLE 2 - SELECTED MODIFIED ATT-KIN REACH ROUTINGS IN ORDER OF STANDARD EXECUTIVE CONTROL INSTRUCTIONS
(A STAR(-) AFTER VOLUME ABOVE BASE(IN) INDICATES A HYDROGRAPH TRUNCATED AT A VALUE EXCEEDING BASE + 10% OF PEAK
A QUESTION MARK(?) AFTER COEFF.(C) INDICATES PARAMETERS OUTSIDE ACCEPTABLE LIMITS, SEE PREVIOUS WARNINGS)
HYDROGRAPH INFORMATION ROUTING PARAMETERS PEAK
OUTFLOW. VOLUME MAIN ITER- Q AND A PEAK S/Q ATT- TRAVEL TIME
XSEC REACH INFLOW OUTFLOW INTERV.AREA BASE- ABOVE TIME ATION EQUATION LENGTH RATIO @PEAK KIN STOR- KINE-
ID LENGTH PEAK TIME PEAK TIME PEAK TIME FLOW BASE INCR H COEFF POWER FACTOR 0/I (K) COEFF AGE MATIC
(FT) (CFS) (HR) (CFS) (HR) (CFS) (HR) (CFS) (IN) (HR) (X) (M) (K*) (Q•) (SEC) (C) (HR) (HR)
ALTERNATE 1 STORM 1
5 800 16 13.0 16 13.1 --- --- 0 .76• .08 1 1.60 1.44 .004 .999 171 .92? .08 .05
14 1200 135 12.6 134 12.7 --- --- 0 1.06 .08 1 .850 1.38 .013 .992 253 .72? .08 .07
TR20 XEQ 9/30/99 GRANDOVER (WEST) COMMERCIAL - POST-DEV. W/PONDS 2 YR, 09/23/99 20 JOB 1 SUMMARY
REV 09/01/83 30 PAGE 13
SUMMARY TABLE 3 - DISCHARGE (CFS) AT XSECTIONS AND STRUCTURES FOR ALL STORMS AND ALTERNATES
XSECTION/ DRAINAGE
STRUCTURE AREA STORM NUMBERS..........
ID (SQ MI) 1
STRUCTURE 15 .46
ALTERNATE 1 135.25
STRUCTURE 1 .12
ALTERNATE 1 16.33
XSECTION 1 .09
ALTERNATE 1 33.45
XSECTION 2 .03
ALTERNATE 1 19.28
XSECFION 3 .12
ALTERNATE 1 41.05
XSECIION 5 .12
ALTERNATE 1 16.32
XSRCTION 6 .24
ALTERNATE 1 122.32

XSECTI0 7 .10
ALTERNATE 1 37.16

XSECTIO .34
ALTERNATE 1 159.43
XSECTION 12 .46
ALTERNATE 1 159.85
XSECTION 14 .46
ALTERNATE 1 134.01
XSECTION 15 .14
ALTERNATE 1 52.03
XSECTION 16 .60
ALTERNATE 1 172.10
Lan Design, Inc. TRANSMITTAL
1208 Eastchester Drive, Suite 200
High Point, NC 27265
Phone: [phone]
Fax: [phone]
Land Planning
Urban Design
Civil Engineering
Landscape Architecture
DATE: T'3-c)/?9 PROJECT: PROJECT #:
TO: Inix) (Z
We transmit: - by mail
- by courier
- by overnight service
- by second day air
e?qy hand delivery
- pick up
For: your approval
- your file/use
- your information
- revision and submission
- distribution
- your signature
- your review and comment
QTY DATED DESCRIPTION

COMMENTS: 'S S' VL-1160 G'u.Q.(,t)Ie_' l UIL"V 11 ka -4
e rpr'?.Q?.a.0 ?c
f2 V
SENT BY:
CC: C. (-Q
H//Forms/New Forms
Operation and Maintenance
Project Name: Grandover Commercial Pond #16 Project Number: 78050
Responsible Party: Koury Corporation PhoneNumber: [phone]
Address: 400 Four Seasons Town Center, Greensboro, NC 27407
1. Inspect monthly, or after every runoff-producing rainfall event, whichever comes first.
A. Remove debris from the trash rack.
B. Check and clear the orifice of any obstructions. If a pump is used as the drawdown mechanism, check
for pump operation.
C. Check the pond side slopes; remove trash, repair eroded areas before the next rainfall event.
D. If the pond is operated with a vegetated filter, check the filter for sediment accumulation, erosion and
proper operation of the flow spreader mechanism. Repair as necessary.
II. Quarterly
A. Inspect the collection system (i.e., catch basins, piping, grassed swales) for proper functioning. Clear
accumulated trash from basin grates and basin bottoms, and check piping for obstructions.
B. Check pond inlet pipes for undercutting, replace riprap, and repair broken pipes.
C. Reseed grassed swales, including the vegetated filter if applicable, twice a year as necessary. Repair
eroded areas immediately.
III. Every 6 months
A. Remove accumulated sediment from the bottom of the outlet structure.
B. Check the pond depth at various points in the pond. If depth is reduced to 75% of original design
depth, sediment will be removed to at least original design depth.
IV. General
A. Mow the side slopes, not including normally submerged vegetated shelf, according to the season.
Maximum grass height will be 6".
B. Cattails, and other indigenous wetland plants, are encouraged along the pond perimeter; however,
they must be removed when they cover the entire surface area of the pond.
C. The orifice is designed to draw down the pond in 2-5 days. If drawdown is not accomplished in that
time, the system may be clogged. The source of the clogging must be found and eliminated.
D. All components of the detention pond system must be kept in good working order.
1 , hereby acknowledge that I am the financially responsible party for
maintenance of this detention pond. I will perform the maintenance as outlined above, as part of the
Certification of Compliance with Stormwater Regulations received for this project.
Signature:
Date:
1, , a Notary Public for the State of ,
County of , do hereby certify that
personally appeared before me this day of , 19 , and acknowledge the due execution
of the foregoing instrument. Witness my hand and official seal,
SEAL
My commission expires
Operation and Maintenance
Project Name: Grandover Commercial Pond #17
Project Number: 78050
Responsible Party: Koury Corporation PhoneNumber: [phone]
Address: 400 Four Seasons Town Center, Greensboro, NC 27407
1. Inspect monthly, or after every runoff-producing rainfall event, whichever comes first.
A. Remove debris from the trash rack.
B. Check and clear the orifice of any obstructions. If a pump is used as the drawdown mechanism, check
for pump operation.
C. Check the pond side slopes; remove trash, repair eroded areas before the next rainfall event.
D. If the pond is operated with a vegetated filter, check the filter for sediment accumulation, erosion and
proper operation of the flow spreader mechanism. Repair as necessary.
II. Quarterly
A. Inspect the collection system (i.e., catch basins, piping, grassed swales) for proper functioning. Clear
accumulated trash from basin grates and basin bottoms, and check piping for obstructions.
B. Check pond inlet pipes for undercutting, replace riprap, and repair broken pipes.
C. Reseed grassed swales, including the vegetated filter if applicable, twice a year as necessary. Repair
eroded areas immediately.
III. Every 6 months
A. Remove accumulated sediment from the bottom of the outlet structure.
B. Check the pond depth at various points in the pond. If depth is reduced to 75% of original design
depth, sediment will be removed to at least original design depth.
IV. General
A. Mow the side slopes, not including normally submerged vegetated shelf, according to the season.
Maximum grass height will be 6".
B. Cattails, and other indigenous wetland plants, are encouraged along the pond perimeter; however,
they must be removed when they cover the entire surface area of the pond.
C. The orifice is designed to draw down the pond in 2-5 days. If drawdown is not accomplished in that
time, the system may be clogged. The source of the clogging must be found and eliminated.
D. All components of the detention pond system must be kept in good working order.
1 , hereby acknowledge that I am the financially responsible party for
maintenance of this detention pond. I will perform the maintenance as outlined above, as part of the
Certification of Compliance with Stormwater Regulations received for this project.
Signature
Date:
I, , a Notary Public for the State of ,
County of , do hereby certify that
personally appeared before me this day of , 19 , and acknowledge the due execution
of the foregoing instrument. Witness my hand and official seal,
I SEAL
My commission expires

F

ENGINEERING CALCULATIONS
for
GRANDOVER (WEST)
COMMERCIAL
25 JUNE 1999
REVISED 24 SEPTEMBER 1999
DEVELOPER:
KOURY CORPORATION
400 FOUR SEASONS TOWN CENTER
GREENSBORO, NORTH CAROLINA 27407
[phone]
ENGINEER:
LANDDESIGN, INC.
1208 EASTCHESTER DRIVE, SUITE 200
HIGH POINT, NORTH CAROLINA 27265
[phone]

WATERSHED ANALYSIS
POND DESIGN
1 ?
o ?S ??1.yl
?e?e?< ?? wz8.33 2?K,Sp `?iS. r,?,?.3D 538, l? gco S'`'j ?o4g.oo gs?.2`? g?i.Si3
vnw
1 /g ?i1.2Z -1 0?- ?c,?•Fy u0o -•yY ?s5.aZ) ,s,o„?y sy
I?•K3 -W.?j ?3o,i"} sS.?T ?ov,c?$ ZoS.BS ?Z?,ga Boi.W??
??2 V?t7t-f-S G X l?.f ? r? q ? 6ti. Q.-
1 J

Lo?O
I I (? ka-,V, j ? L? /- I i

C

i
Lo
j Via'
/o - 800, ?-?
ll (-9
Sb - ?f sue„- E
? 80l 2
1- ?a- 8oz, Ca

I
?'I yM1J

2 Yet, W_-e-? - 7 T, 18
to
Q(o ????) -::- z09, s3 41-?

Sit C

a(D N')

C

J

F
i'
i
G{-L
I
h's X949

?= I

7

n ?I i 1
L1
PA,
43
n
I I ??l Y?al?.r ??.'L4 ? )?t't? • ?2r?? f?- ?-p? ? . .

acs r
03

i!
61
u

s? 4

- ?s8 •? ? G. ao

?o?.o Y.39 gy o3
Bo?.S x,53 12-6 , e30
So . r? C? ?- ?? S . S?

..?
110)
Q.!
Z3 s c? 3

C

1
2 Irv g cm?
;? 5 f
17
r ? Ar-
1
CN
c ?

1
/
1
c r 17
r

9w I

1 • J 48c) j?

1
51i C?2 ! J

'0
+ ? 1
0
i
I r
V ,
V
1
7
nnq
>»
0 0 0080
NNNN
N
2???FW
FF Uuu1-,
WNNrJrJr
H??WUUw
NN=W¢
?E NQ
98?g?
S

-V-?f-'- 7'-rb W U G'-7 a2.tJl ,?? r l -7 7
I-T C) 4,0 C'?? va?wo A/,P? Z? V
- r d ?- cJ?4 =,?e/ - S3; S
C) ISA

-
-
-
?'
n/
t^J
Lf/lti??-

1?3 °v?i?°n°$
NNNNNN
?f?
yJ2WJ?Eyyaa?RyQNQ?ILyNaa?I FW W
J
W W
W3? C? (/
.
TT
yy
NWWW?? _
y Z
o
D

e II-f L-0-00 Z v
Aga
6
-

? S? . D ) 3 ? 8? O 1 3 S?-b ? ?J?C4-D

?s S. o l y o S ?, 5 8-0 Ll c Zq
Say , o Y S 3Llo 11 Lf 2._ Ssa o (? r 5

2.o rg ?

LLIW WILWW
? g WMI
»»»
OOOOON
NNNN
W???rr
yWWW??
?V1InNW JW.J
N2Sww
NON¢¢
N'R8?8?
a
fl
t r w 4?:t.1? vl?r n - /?? , r v X.c.t ,-r 7
Ill?e . - S Lra?? - --b C4
/ V / I-
S 8-O
C
dao.d
801, D
eo2-o
D
I'LNO
s ; 5r?-
T, t?D
`I(?L
S.o3 S-
io . !? 3 S
z? , fir Z.
a-ALQ
V
6,31
G . s3
o •s`i
0.GJ
d • ?5
r

p D, ?

13 g . Z-3
V
?Sy • ?i ? (a Ste, ? Cp
5?. ?Z cl g"?. ZS
r?VJj ?. Cam' . `? • .? t-
a",? G::. 0,
??y cxiv?-vv cr - - - - ?? /
?-'?Lg
1
ti a

U
S-0-0

1 6fyyu to tilWW
W NNJJ
? `1I^

N
??UU
Ss < ??
??'7&2272
a

?F /77
1
1

Al UJU+

,r 2 C--v -
C Oo
.0 (L

2 0(o

C`?,, Ems[ . • zero` S, s?o ? - ? 3.3?;,,?,J .
IQL

l (w a7?)
,?

G- ?-

Qll
?? `?'?`.'I , •. - f_. Vn?lr l - ?, /'? r ti T•v?/?i "r ? r ? 1?i ? ! ?/??L?/ t` ??

55O

?Ire6.
E-00 S-ID
TI Co ?D
'
?92o
2- q? y?cI)
?3 I i. O 3o9?-D Z °18 0 (2 9 ???
CPO

e
1 I q
-f
Ir
• S I? q 13
co t"Ll C9 s
J
T
.a .
O?
r

t
s
e
s
t
e
t
A
e
i
s
t
s
t
s
s
s
Syaa2Ea ? IS

° i zAl. a•c, E Pi a = `?o, A.? .
° LA?o l.1sE
1'I Ll L-r a M i ?.?' = 3?, 2 AU
.. . - ? i N ?, c. c - ?m i c. Y P? t DC?.rTr a-c. = ?? • l A-?-,
2c-?Cv?.c,(?c? SCS CCIIZ?/C MUM?-{Z = 7o CUNDt? o D, woo D?
..' Ti Mfc O? ?.l C,G't.1TiLA-Tlc? ? ? ??? • ? CIJ?(.C) f?El?
?tt'lE a= Co?1 C.Er•! !`Z a--rcor.l I?' .- Dc'JE?O E.?-(?
G? ? 015. ??

Iz/?

--------- -?----_ .?.?._`?f-x.3.5 40 -
, .......__.. _ _......_. _ 1..20....._ -

_.. I
... ........_.....__..._ ..._ .. .....
...... ?._?15? . o. X5600 _.. 33`130 __......___- ......._ ?__..---- -
Ii X55 • o. 103 I4o o?

„ ...._ ..
3:7Q.

300

- - ;I l?hoA o...___. S?ZoSo
-?
? __
_ ...
...... n i o 0 0 ... Z ..._... -7 (;a 33?

{?;_... fZ.CP ? .'??(.:.. x.53 .So ............. _.
i

I.:

j (0q,

i?

;ii
iii ......._.. ... ..__._..- ' - ?Z, l ?q?
,•r
---- - -- -;j-
- -------.-...-.Q - _- C Cs_e? u.w ?Y
3 IZ
3tz
(i
iw STp?C-,? SZacz.?.C.C ? ?SG?tA.eC-,E
i ?5G.o
A.
5,51
_--------_... _._......____. -----• ---•--•-•-•-•-----•----- 8_23_x ---------
°i
is i o ? ------ - Z_ -----
r
1.

J
d

5
E
n

7
l
7
q

r
n
2 YEAR STORM

*R#*f*R+#R**R
#+***
*f*
**+#*****##fi** *#*#Rf******#**f#*f***i*fi****#+i*#*****#****
* * TR 20 SIN
+ * HMVersion 3.40
* TR 20 * Date 9/23/99
* * Time 9:36:30
* Project Formulation Hydrology * Input file GDVR2B.t20
" * Output file GDVR2B.out

xxxxxx
x x xx
x xxxx
x xxxx
x x
x xxxxx
x xx
x x x x x x x
x xxx xxx x x x x
x x x x x x x
x x x x xx x
x x x xXXX< xx XXxxx
Full Microcomputer Implementation
by
Haestad Methods, Inc.
37 Brookside Road * Waterbury, Connecticut 06708 * [phone]

F;;?'

******************80-80 LI ST OF INPUT DATA FOR TR-20 HYDROLOGY******************
JOB TR-20 FULLPRINT 10
TITLE 001 GRANDOVER (WEST) COMMERCIAL - POST-DEV. W/PONDS 2 YR, 09/23/99 20
,TITLE
3 STRUCT
15 30
40
8 770.86 0.00 0.00 50
8 771.00 0.04 0.419 60
8 772.00 162.00 3.477 70
8 773.00 458.21 6.654 80
8 774.00 841.78 9.951 90
8 775.00 1296.00 13.370 100
8 775.65 1735.68 16.891 110
8 120
9 ENDTBL 140
3 STRUCT 16 150
8 795.5 0.00 0.00 170
8 796.0 0.30 1.440 171
8 797.1 0.53 4.699 172
8 797.5 0.59 5.917 173
8 797.9 0.65 7.151 174
8 798.0 4.45 7.462 175
8 798.5 56.50 9.035 176
8 799.0 139.23 10.635 177
8 800.0 366.07 13.916 178

8
1 801.0 655.96 17.308 179
8 802.0 997.28 20.812 180
8 181
8 182
9 ENDTBL 251
3 STRUCT 17 252
8 814.0 0.00 0.00 253
8 815.0 0.24 0.505 254
8 815.7 0.31 0.884 255
8 816.0 5.26 1.053 256
8 816.5 21.84 - 1.343 257
817.0 44.88 1.645 258
8 818.0 105.11 2.284 259
819.0 180.37 2.970 260
820.0 368.08 3.705 261
9 ENDTBL 262
STRUCT 18 270
753.50 0.00 0.00 271
754.00 0.95 0.78 272
8 754.50 2.67 1.81 273
755.00 3.77 2.83 274
755.50 31.14 4.17 275
8 756.00 80.33 5.51 276

7
J

**********************80-80 LIST OF INPUT DATA (CONTINUED)** ********************
8 756.50 143.75 7.19 277
8 757.00 218.66 8.86 278
8
8 757.50
758.00 303.52
397.25 10.88
12.90 279
280
8 758.50 499.09 15.27 281
8 759.00 608.43 17.64 282
9 ENDTBL 283
3 STRUCT 01 290
8 798.50 0.00 0.00 291
8 799.00 0.10 0.70 292
8 799.50 0.68 1.54 293
8 800.00 16.87 2.38 294
8 800.50 46.18 3.39 295
8 801.00 84.03 4.39 296
8 801.50 128.80 5.53 297
8 802.00 179.55 6.67 298
8 802.50 235.63 8.01 299
8 803.00 402.66 9.34 300
8 803.50 662.04 10.93 301
8 804.00 982.86 12.51 302
9 ENDTBL 303
6 RUNOFF 1 001 1 0.24 90.00 0.251 1 1 1 360
6 RESVOR 2 16 1 2 795.5 1 1 1 1 1 370

6 REACH 3 003 2 3 1350.00 1.6 1.451 1 1 1 380
6 RUNOFF 1 004 4 0.025 90.00 0.231 1 1 1 390
6 RESVOR 2 17 4 5 814.00 1 1 1 1 1 391
6 REACH 3 006 5 6 800.00 1.6 1.441 1 1 1 392
6 RUNOFF 1 007 7 0.03 85.0 0.171 1 1 1 393
6 ADDHYD 4 008 7 6 5 1 1 1 1 1 394
16 RESVOR 2
6 REACH 3 01
010 5
4 4
6 798.50
800.0
1.6 1
1.441 1 1
1 1
1 1
1 395
396
6 ADDHYD 4 011 6 3 1 1 1 1 1 1 397
6 RUNOFF 1 012 2 0.10 82.0 0.251 1 1 1 398
6 ADDHYD 4 013 1 2 3 1 1 1 1 1 399
6 RESVOR 2 15 3 4 770.86 1 1 1 1 1 400
6 REACH 3 015 4 5 1200.00 0.85 1.381 1 1 1 401
RUNOFF 1 016 6 0.14 83.00 0.171 1 1 1 402
ADDHYD 4
F 017 5 6 7 1 1 1 1 1 403
6 RESVOR 2 16 7 1 753.50 1 1 1 1 1 404
ENDATA
INCREM 6
0.08 450
460
COMPUT 7 001 18 0.0 3.5 1.02 2 0 1 01 470
ENDCMP 1 480
ENDJOB 2 490
++++++++++++ ++++++ ++ +++++++++ ++END OF 80-80 LIST+++++ +++++++++ ++++ ++ ++++++++++++

J
2?;
i
TR20 XEQ 9/23/99 GRANDOVER (WEST) COMMERCIAL - POST-DEV. W/PONDS 2 YR, 09/23/99 20 JOB 1
REV 09/01/83 30
,FILE NO. 1
COMPUTER PROGRAM FOR PROJECT FORMULATION - HYDROLOGY USER NOTES
THE USERS MANUAL FOR THIS PROGRAM IS THE MAY 1982 DRAFT OF TR-20. CHANGES FROM THE 2/14/74 VERSION INCLUD
REACH ROUTING - THE MODIFIED ATT-KIN ROUTING PROCEDURE REPLACES THE CONVEX METHOD. INPUT DATA PREPARED FO
PREVIOUS PROGRAM VERSIONS USING CONVEX ROUTING COEFFICIENTS WILL NOT RUN ON THIS VERSION.
THE PREFERRED TYPE OF DATA ENTRY IS CROSS SECTION DATA REPRESENTATIVE OF A REACH. IT IS RECOMMENDED TH
THE OPTIONAL CROSS SECTION DISCHARGE-AREA PLOTS BE OBTAINED WHENEVER NEW CROSS SECTION DATA IS ENTERED.
THE PLOTS SHOULD BE CHECKED FOR REASONABLENESS AND ADEQUACY OF INPUT DATA FOR THE COMPUTATION OF "M"
VALUES USED IN THE ROUTING PROCEDURE.
GUIDELINES FOR DETERMINING OR ANALYZING REACH LENGTHS AND COEFFICIENTS (X,M) ARE AVAILABLE IN THE USERS
MANUAL. SUMMARY TABLE 2 DISPLAYS REACH ROUTING RESULTS AND ROUTING PARAMETERS FOR COMPARISON AND CHECK
HYDROGRAPH GENERATION - THE PROCEDURE TO CALCULATE THE INTERNAL TIME INCREMENT AND PEAK TIME OF THE UNIT
HYDROGRAPH HAVE BEEN IMPROVED. PEAK DISCHARGES AND TIMES MAY DIFFER FROM THE PREVIOUS VERSION. OUTPUT
HYDROGRAPHS ARE STILL INTERPOLATED, PRINTED, AND ROUTED AT THE USER SELECTED MAIN TI14E INCREMENT.
INTERMEDIATE PEAKS - METHOD ADDED TO PROVIDE DISCHARGES AT INTERMEDIATE POINTS WITHIN REACHES WITHOUT ROUT
OTHER - THIS VERSION CONTAINS SOME ADDITIONS TO THE INPUT A14D NUMEROUS MODIFICATIONS TO THE OUTPUT. USER
OPTIONS HAVE BEEN MODIFIED AND AUGMENTED ON THE JOB RECORD, RAINTABLES ADDED, ERROR AND WARNING MESSAGE
EXPANDED, AND THE SUMMARY TABLES COMPLETELY REVISED. THE HOLDOUT OPTION IS NOT OPERATIONAL AT THIS TIM
PROGRAM QUESTIONS OR PROBLEMS SHOULD BE DIRECTED TO HYDRAULIC ENGINEERS AT THE SCS NATIONAL TECHNICAL CENT
CHESTER, PA (NORTHEAST) -- 215-499-3933, FORT WORTH, TX (SOUTH) -- 334-5242 (FTS)
LINCOLN, NB (MIDWEST) -- 541-5318 (FTS), PORTLAND, OR (WEST) -- 423-4099 (FTS)
OR HYDROLOGY UNIT, ENGINEERING-DIVISION, LANHAM, MD -- 436-7383 (FTS).
PROGRAM CHANGES SINCE MAY 1982:
12/17/82 - CORRECT PEAK RATE FACTOR FOR USER ENTERED DIMHYD
CORRECT REACH ROUTI14G PEAK TRAVEL TIME PRINTED WITH FULLPRINT OPTION
5/02/83 - CORRECT COMPUTATIONS FOR ---
1. DIVISION OF BASEFLOW IN DIVERT OPERATION
2. HYDROGRAPH VOLUME SPLIT BETWEEN BASEFLOW AND ABOVE BASEFLOW
3. CROSS SECTION DATA PLOTTING POSITION
4. INTERMEDIATE PEAK WHEN "FROM" AREA IS LARGER THAN "THRU" AREA
5. STORAGE ROUTED REACH TRAVEL TI14E FOR MULTIPEAK HYDROGRAPH
6. ORDERING "FLOW-FREQ" FILE FROM SUMMARY TABLE #3 DATA
7. BASEFLOW ENTERED WITH READHYD
8. LOW FLOW SPLIT DURING DIVERT PROCEDURE #2 WHEN SECTION RATINGS START AT DIFFERENT E
ENHANCEMENTS ---
1. REPLACE USER MANUAL ERROR CODES (PAGE 4-9 TO 4-11) WITH MESSAGES
2. LABEL OUTPUT HYDROGRAPH FILES WITH CROSS SECTION/STRUCTURE, ALTERNATE AND STORM NO'
09/01/83 - CORRECT INPUT AND OUTPUT ERRORS FOR INTERMEDIATE PEAKS
CORRECT COMBINATION OF RATING TABLES FOR DIVERT
CHECK REACH ROUTING PARAMETERS FOR ACCEPTABLE LIMITS
ELIMINATE MINIMUM REACH TRAVEL TIME WHEN ATT-KIN COEFFICIENT EQUALS ONE
1
7
J
r
u
G

7
s
TR20 XEQ 9/23/99 GRANDOVER (WEST) COMMERCIAL - POST-DEV. W/PONDS 2 YR, 09/23/99
REV 09/01/83
EXECUTIVE CONTROL OPERATION INCREM MAIN TIME INCREMENT = .08 HOURS
20 JOB 1
30
RECORD
EXECUTIVE CONTROL OPERATION COMPUT FROM XSECTION 1 TO STRUCTURE 18 RECORD
STARTING TIME _ .00 RAIN DEPTH = 3.50 RAIN DURATION= 1.00 RAIN TABLE NO.= 2 ANT. MOIST. COND= 2
ALTERNATE NO.= 1 STORM NO.= 1 MAIN TIME INCREMENT = .08 HOURS
PERATION RUNOFF CROSS SECTION 1
OUTPUT HYDROGRAPH= 1
AREA= .24 SQ MI INPUT RUNOFF CURVE= 90. TIME OF CONCENTRATION= .25 HOURS
INTERNAL HYDROGRAPH TIME INCREMENT= .0333 HOURS
PEAK TIME(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET)
12.05 428.33 (RUNOFF)
16.44 12.01 (RUNOFF)
17.65 10.03 (RUNOFF)
19.65 8.06 (RUNOFF)
IME(HRS) FIR ST HYDROGRAPH POINT = .00 HOURS TIME INCR EMENT = .08 HOURS DRAINAGE AREA .24 SQ.M
4.80 DISCHG .00 .00 .00 .00 .02 .05 .11 .17 .24 .30
5.60 DISCHG .37 .43 .50 .56 .62 .68 .77 .90 1.05 1.16
6.40 DISCHG 1.27 1.36 1.45 1.54 1.63 1.71 1.80 1.88 1.96 2.04
7.20 DISCHG 2.12 2.20 2.28 2.35 2.43 2.50 2.57 2.65 2.72 2.79
8.00 DISCHG 2.86 2.99 3.26 3.52 3.76 4.09 4.42 4.66 4.83 4.97
8.80 DISCHG 5.10 5.22 5.33 5.46 5.75 6.15 6.46 6.68 6.84 7.00
9.60 DISCHG 7.27 7.73 8.12 8.37 8.57 8.74 9.00 9.47 9.94 10.43
10.40 DISCHG 11.30 12.19 12.95 14.29 15.74 16.84 18.34 20.02 21.29 22.88
11.20 DISCHG 24.79 26.31 28.46 31.46 34.80 53.45 95.09 131.87 189.53 301.70
12.00 DISCHG 404.90 419.42 311.48 193.75 132.05 95.71 74.06 62.64 54.92 49.43
12.80 DISCHG 46.26 42.87 39.19 36.86 34.62 32.17 30.61 29.21 27.59 26.47
13.60 DISCHG 25.38 23.81 22.65 21.88 21.01 20.34 19.84 19.07 18.41 17.93
14.40 DISCHG 17.21 16.53 16.06 15.35 14.63 14.22 14.05 13.97 13.94 13.93
15.20 DISCHG 13.93 13.89 13.52 12.85 12.37 12.14 12.04 12.00 11.98 11.98
16.00 DISCHG 11.97 11.98 11.98 11.98 11.99 11.99 11.99 11.89 11.34 10.68
16.80
17.60 DISCHG
DISCHG 10.31
10.03 10.15
10.03 10.07
10.02 10.04
9.76 10.03
9.11 10.02
8.54 10.02
8.26 10.02
8.14 10.02
8.08 10.03
8.06
18.40 DISCHG 8.05 8.04 8.04 8.04 8.04 8.04 8.05 8.05 8.05 8.05
19.20 DISCHG 8.05 8.05 8.05 8.06 8.06 8.06 8.06 8.05 7.79 7.13
20.00 DISCHG 6.56 6.28 6.15 6.10 6.07 6.06 6.05 6.05 6.05 6.05
20.80 DISCHG 6.06 6.06 6.06 6.06 6.06 6.06 6.06 6.06 6.06 6.06
21.60 DISCHG 6.06 6.06 6.06 6.06 6.06 6.07 6.07 6.07 6.07 6.07
22.40 DISCHG 6.07 6.07 6.07 6.07 6.07 6.07 6.07 6.07 6.07 6.08
23.20 DISCHG 6.08 6.08 6.08 6.08 6.08 6.08 6.08 6.07 5.81 5.15
RUNOFF VOLU14E ABOVE BASEFLOW = 2.44 WATERSHED INCHES,
377.66 CFS-HRS, 31.21 ACRE-FEET; BASEFLOW = .00 CFS
l
j-
I
TR20 XEQ 9/23/99 GRANDOVER (WEST) COMMERCIAL - POST-DEV. W/PONDS 2 YR, 09/23/99 20 JOB 1
1 REV 09/01/83 30
OPERATIO
N RESVOR STRUCTURE 16
INPUT HY DROGRAPH= 1 OUTPUT HYDROGRAPH= 2
SURFACE ELEVATION= 795.50
PEAK TIM E(HRS) PE AK DISCHARGE(CFS) PEAK ELEVATION(FEET)
12.20 264.90 799.55
TIME(HRS) F IRST HYDROGRAPH POINT = .00 HOURS T IME INCREMENT = .08 HOURS DRAINAGE AREA = .24 SQ.M
5.60
5.60 DISCHG
ELEV .00
795.50 .00
795.50 .00
795.50 .00
795.50 .00
795.50 01
795.51 .O1
795.51 .O1
795.51 01
795.51 .O1
795.52
6.40 DISCHG .01 .01 .02 .02 .02 .02 .02 .03 .03 .03
6.40 ELEV 795.52 795.52 795.53 795.53 795.53 795.54 795.54 795.54 795.55 795.55
7.20 DISCHG .03 .04 .04 .04 .05 .05 .05 .06 .06 .06
7.20 ELEV 795.56 795.56 795.57 795.57 795.58 795.58 795.59 795.60 795.60 795.61
8.00 DISCHG .07 .07 .08 .08 .09 .09 .10 .10 .11 .12
8.00 ELEV 795.61 795.62 795.63 795.64 795.64 795.65 795.66 795.67 795.68 795.69
8.80 DISCHG .12 .13 .14 .14 .15 .16 .17 .18 .19 .20
8.80 ELEV 795.71 795.72 795.73 795.74 795.75 795.77 795.78 795.80 795.81 795.83
9.60 DISCHG .20 .21 .23 .24 .25 .26 .27 .28 30 30
9.60 ELEV 795.84 795.86 795.88 795.89 795.91 795.93 795.95 795.97 .
795.99 .
796.02
10.40 DISCHG .31 .31 .32 .33 .33 .34 .35 .36 .37 .38
10.40 ELEV 796.04 796.07 796.09 796.12 796.16 796.19 796.23 796.27 796.32 796.37
11.20 DISCHG .39 .40 .41 .43 .44 .46 .50 .54 .59 9.27
11.20 ELEV 796.42 796.47 796.53 796.60 796.67 796.77 796.94 797.18 797.53 798.05
12.00 DISCHG 87.01 193.66 257.58 255.73 221.19 181.26 145.41 121.58 103.24 88.33
12.00
12.80 ELEV
DISCHG 798.68
76.51 799.24
67.19 799.52
59.55 799.51
54.31 799.36
50.65 799.19
47.25 799.03
44.12 798.89
41.32 798.78
38.77 798.69
36.46
12.80 ELEV 798.62 798.56 798.52 798.48 798.44 798.41 798.38 798.35 798.33 798.31
13.60 DISCHG 34.38 32.45 30.63 28.98 27.50 26.15 24.96 23.87 22.86 21.93
13.60 ELEV 798.29 798.27 798.25 798.24 798.22 798.21 798.20 798.19 798.18 798.17
14.40 DISCHG 21.07 20.24 19.47 18.72 17.99 17.29 16.67 16.14 15.71 15.36
14.40 ELEV 798.16 798.15 798.14 798.14 798.13 798.12 798.12 798.11 798.11 798.10
15.20 DISCHG 15.08 14.85 14.62 14.34 14.00 13.66 13.35 13.09 12.87 12.69
15.20 ELEV 798.10 798.10 798.10 798.10 798.09 798.09 798.09 798.08 798.08 798.08
16.00 DISCHG 12.55 12.44 12.35 12.28 12.22 12.17 12.14 12.10 12.00 11.81
16.00
16.80 ELEV
DISCHG 798.08
11.55 798.08
11.29 798.08
11.06 798.08
10.86 798.07
10.70 798.07
10.56 798.07
10.46 798.07
10.37 798.07
10.30 798.07
10.25
16.80 ELEV 798.07 798.07 798.06 798.06 798.06 798.06 798.06 798.06 798.06 798.06
17.60 DISCHG 10.20 10.17 10.14 10.09 9.96 9.74 9.47 9.22 9.00 8.82
17.60 ELEV 798.06 798.05 798.05 798.05 798.05 798.05 798.05 798.05 798.04 798.04
18.40 DISCHG 8.67 8.54 8.45 8.37 8.30 8.25 8.21 8.18 8.15 8.13
18.40 ELEV 798.04 798.04 798.04 798.04 798.04 798.04 798.04 798.04 798.04 798.04
19.20 DISCHG 8.12 8.10 8.09 8.09 8.08 8.08 8.07 8.07 8.04 7.93
19.20 ELEV 798.04 798.04 798.03 798.03 798.03 798.03 798.03 798.03 798.03 798.03
20.00 DISCHG 7.71 7.46 7.21 7.00 6.82 6.67 6.55 6.45 6.37 6.31
20.00
20.80 ELEV
DISCHG 798.03
6.26 798.03
6.22 798.03
6.19 798.02
6.16 798.02
6.14 798.02
6.12 798.02
6.11 798.02
6.10 798.02
6.09 798.02
6.09
20.80 ELEV 798.02 798.02 798.02 798.02 798.02 798.02 798.02 798.02 798.02 798.02
L?ll

I
TR20 XEQ 9/23/99 GRANDOVER (WEST) COMMERCIAL - POST-DEV. W/PONDS 2 YR, 09/23/99 20 JOB 1
REV 09/01/83 30
21.60 DISCHG 6.08 6.08 6.08 6.07 6.07 6.07 6.07 6.07 6.07 6.07
21.60 ELEV 798.02 798.02 798.02 798.02 798.02 798.02 798.02 798.02 798.02 798.02
22.40 DISCHG 6.07 6.07 6.07 6.07 6.07 6.07 6.07 6.07 6.07 6.07
22.40 ELEV 798.02 798.02 798.02 798.02 798.02 798.02 798.02 798.02 798.02 798.02
23.20 DISCHG 6.07 6.07 6.07 6.07 6.08 6.08 6.08 6.08 6.05 5.94
23.20 ELEV 798.02 798.02 798.02 798.02 798.02 798.02 798.02 798.02 798.02 798.01
RUNOFF VOLUME ABOVE BASEFLOW = 1.85 WATERSHED INCHES, 286.56 CFS-HRS, 23.68 ACRE-FEET; BASEFLOW .00 CFS
PERATION REACH CROSS SECTION 3
INPUT HYDROGRAPH= 2 OUTPUT HYDROGRAPH= 3
LENGTH = 1350.00 FEET INPUT = COEFFICIENTS RELATED TO CROSS SECTIONAL AREA, X= 1.60, M= 1.45
MODIFIED ATT-KIN ROUTING COEFFICIENT = 1.00 PEAK TRAVEL TIME _ .00 HOURS
*** WARNING REACH 3 ATT-KIN COEFF.(C) GREATER THAN 0.667, CONSIDER REDUCING MAIN TIME INCREMENT ***
PEAK TIME(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET)
12.20 264.90 (NULL)
IME(HRS) FIRST HYDROGRAPH POINT = .00 HOURS TIME INCREMENT = .08 HOURS
5.60 DISCHG .00 .00 .00 .00 .00 .01 .01
6.40 DISCHG .01 .01 .02 .02 .02 .02 .02
7.20 DISCHG .03 .04 .04 .04 .05 .05 .05
8.00 DISCHG .07 .07 .08 .08 .09 .09 .10
8.80 DISCHG .12 .13 .14 .14 .15 .16 .17
9.60
10.40 DISCHG
DISCHG .20
.31 .21
.31 .23
.32 .24
.33 .25
.33 .26
.34 .27
.35
11.20 DISCHG .39 .40 .41 .43 .44 .46 .50
12.00 DISCHG 87.01 193.66 257.58 255.73 221.19 181.26 145.41
12.80 DISCHG 76.51 67.19 59.55 _ 54.31 50.65 47.25 44.12
13.60 DISCHG 34.38 32.45 30.63 28.98 27.50 26.15 24.96
14.40 DISCHG 21.07 20.24 19.47 18.72 17.99 17.29 16.67
15.20 DISCHG 15.08 14.85 14.62 14.34 14.00 13.66 13.35
16.00 DISCHG 12.55 12.44 12.35 12.28 12.22 12.17 12.14
16.80 DISCHG 11.55 11.29 11.06 10.86 10.70 10.56 10.46
17.60
18.40 DISCHG
DISCHG 10.20
8.67 10.17
8.54 10.14
8.45 10.09
8.37 9.96
8.30 9.74
8.25 9.47
8.21
19.20 DISCHG. 8.12 8.10 8.09 8.09 8.08 8.08 8.07
20.00 DISCHG 7.71 7.46 7.21 7.00 6.82 6.67 6.55
20.80 DISCHG 6.26 6.22 6.19 6.16 6.14 6.12 6.11
21.60 DISCHG 6.08 6.08 6.08 6.07 6.07 6.07 6.07
22.40 DISCHG 6.07 6.07 6.07 6.07 6.07 6.07 6.07
23.20 DISCHG 6.07 6.07 6.07 6.07 6.08 6.08 6.08
8
RUNOFF VOLUME ABOVE BASEFLOW = 1.85 WATERSHED INCHES,
IERATION RUNOFF CROSS SECTION 4
OUTPUT HYDROGRAPH= 4
AREA= .03 SQ MI INPUT RUNOFF CURVE= 90.
DRAINAGE AREA = .24 SQ.M
.01 .01 .01
.03 .03 .03
.06 .06 .06
.10 .11 .12
.18 .19 .20
.28 .30 .30
.36 .37 .38
.54 .59 9.27
121.58 103.24 88.33
41.32 38.77 36.46
23.87 22.86 21.93
16.14 15.71 15.36
13.09 12.87 12.69
12.10 12.00 11.81
10.37 10.30 10.25
9.22 9.00 8.82
8.18 8.15 8.13
8.07 8.04 7.93
6.45 6.37 6.31
6.10 6.09 6.09
6.07 6.07 6.07
6.07 6.07 6.07
6.08 6.05 5.94
286.56 CFS-HRS, 23.68 ACRE-FEET; BASEFLOW = .00 CFS
TIME OF CONCENTRATION= .23 HOURS
s
Fi`j
I
0
7

TR20 XEQ 9/23/99
REV 09/01/83
GRANDOVER (WEST) COMMERCIAL - POST-DEV. W/PONDS 2 YR, 09/23/99 20
30
INTERNAL HYDROGRAPH TIME INCREMENT= .0307 HOURS
PEAK TIME(HRS) PEAK DISCHARGE(CFS)
12.04 45.66

IME(HRS) FIRST HYDROGRAPH POINT =
4.80 DISCHG .00 .00
5.60 DISCHG .04 .05
6.40 DISCHG .13 .14
7.20 DISCHG .22 .23
8.00
8.80 DISCHG
DISCHG .30
.53 .31
.55
9.60 DISCHG .76 .81
10.40 DISCHG 1.19 1.29
11.20 DISCHG 2.62 2.77
- 12.00 DISCHG 43.92 44.01
12.80 DISCHG 4.76 4.39
13.60 DISCHG 2.62 2.45
14.40 DISCHG 1.78 1.71
15.20 DISCHG 1.45 1.45
16.00 DISCHG 1.25 1.25
16.80 DISCHG 1.07 1.05
17.60 DISCHG 1.04 1.04
18.40 DISCHG .84 .84
19.20 DISCHG .84 .84
20.00 DISCHG 67 .65
20.80 DISCHG .63 .63
21.60
22.40 DISCHG
DISCHG .63
.63 .63
.63
23.20 DISCHG .63 .63
PEAK ELEVATION(FEET)
(RUNOFF)
.00 HOURS TIME INCREMENT = .08 HOURS
.00 .00 .00 .01 .01
.05 .06 .07 .07 .08
.15 .16 .17 .18 .19
.24 .25 .25 .26 .27
.34 .37 .40 .43 .47
.56 .57 .61 .65 .68
.85 .88 .90 .91 .94
1.37 1.52 1.67 1.78 1.94
3.01 3.34 3.68 6.03 10.73
30.51 18.30 12.58 9.18 7.17
4.01 3.79 3.56 3.30 3.16
2.34 2.26 2.17 2.11 2.05
1.66 1.58 1.51 1.47 1.46
1.40 1.33 1.28 1.26 1.25
1.25 1.25 1.25 1.25 1.25
1.05 1.04 1.04 1.04 1.04
1.04 1.01 .94 .88 .85
.84 .84 .84 .84 .84
.84 .84 .84 .84 .84
.64 .63 .63 .63 .63
.63 .63 .63 .63 .63
.63 .63 .63 .63 .63
.63 .63 .63 .63 .63
.63 .63 .63 .63 .63
RUNOFF VOLUME ABOVE BASEFLOW = 2.44 WATERSHED INCHES,
ERATION RESVOR STRUCTURE 17
INPUT HYDROGRAPH= 4 OUTPUT HYDROGRAPH= 5
SURFACE ELEVATION= 814.00
PEAK TIME(HRS) PEAK DISCHARGE(CFS)
12.20 24.67
DRAINAGE AREA =
.02 .03
.10 .11
.20 .21
.28 .28
.49 .51
.70 .72
1.00 1.04
2.12 2.24
14.37 20.85
6.21 5.51
3.01 2.84
1.97 1.91
1.45 1.45
1.25 1.25
1.24 1.17
1.04 1.04
.84 .84
.84 .84
.84 .81
.63 .63
.63 .63
.63 .63
.63 .63
.63 .60
JOB 1
.03 SQ.M
.03
.12
.21
.29
.52
.73
1.10
2.42
33.73
5.01
2.73
1.86
1.45
1.25
1.10
1.04
.84
.84
.73
.63
.63
.63
.63
.52
39.38 CFS-HRS, 3.25 ACRE-FEET; BASEFLOW = .00 CFS
PEAK ELEVATION(FEET)
816.56
ME(HRS) FIRST HYDROGRAPH POINT = .00 HOURS TIME INCREMENT = .08 HOURS DRAINAGE AREA = .03 SQ.M
6.40 DISCHG .00 .00 .00 .00 .00 .01 .01 .01 .01 .01
6.40 ELEV 814.00 814.00 814.00 814.00 814.00 814.02 814.02 814.03 814.03 814.03
7.20 DISCHG .O1 .O1 .O1 .O1 .O1 .O1 .O1 .Ol .O1 .02
7.20 ELEV 814.03 814.04 814.04 814.04 814.05 814.05 814.05 814.06 814.06 814.06
8.00 DISCHG .02 .02 .02 .02 .02 .02 .02 .02 .03 .03
8.00
8.80 ELEV
DISCHG 814.07
.03 814.07
.03 814.08
.03 814.08
.03 814.08
.04 814.09
.04 814.10
.04 814.10
.04 814.11
.04 814.11
.05
8.80 ELEV 814.12 814.13 814.13 814.14 814.15 814.16 814.16 814.17 814.18 814.19

J
1
TR20 XEQ 9/23/99 GRANDOVER (WEST) COMMERCIAL - POST-DEV. W/PONDS 2 YR, 09/23/99 20 JOB 1
REV 09/01/83 30
9.60
9.60 DISCHG
ELEV 05
814.20 .05
814.21 .05
814.22 .06
814.23 .06
814.24 .06
814.25 .06
814.26 .07
814.27 .07
814.29 .07
814.30
10.40 DISCHG .08 .08 .08 .09 .09 .10 .10 .11 .12 .12
10.40 ELEV 814.31 814.33 814.35 814.36 814.38 814.40 814.43 814.45 814.48 814.51
11.20 DISCHG 13 .14 .15 .16 .17 .18 .21 .24 .26 .30
11.20 ELEV 814.54 814.57 814.61 814.65 814.69 814.75 814.86 815.02 815.23 815.56
12.00 DISCHG 5.14 17.38 24.20 24.28 20.95 17.75 14.71 12.16 10.16 8.60
12.00 ELEV 815.99 816.37 816.55 816.55 816.47 816.38 816.28 816.21 816.15 816.10
12.80 DISCHG 7.42 6.52 5.78 5.22 4.94 4.68 4.42 4.19 3.96 3.76
12.80 ELEV 816.07 816.04 816.02 816.00 815.98 815.96 815.95 815.93 815.92 815.91
13.60
13.60 DISCHG
ELEV 3.56
815.90 3.38
815.89 3.21
815.88 3.05
815.87 2.90
815.86 2.77
815.85 2.64
815.84 2.53
815.83 2.43
815.83 2.33
815.82
14.40 DISCHG 2.24 2.15 2.07 1.99 1.91 1.84 1.77 1.72 1.67 1.63
14.40 ELEV 815.82 815.81 815.81 815.80 815.80 815.79 815.79 815.79 815.78 815.78
15.20 DISCHG 1.60 1.57 1.55 1.51 1.48 1.44 1.41 1.38 1.36 1.34
15.20 ELEV 815.78 815.78 815.77 815.77 815.77 815.77 815.77 815.76 815.76 815.76
16.00 DISCHG 1.32 1.31 1.30 1.29 1.28 1.28 1.27 1.27 1.26 1.23
16.00 ELEV 815.76 815.76 815.76 815.76 815.76 815.76 815.76 815.76 815.76 815.76
16.80 DISCHG 1.21 1.18 1.16 1.14 1.12 1.11 1.10 1.09 1.08 1.07
16.80 ELEV 815.75 815.75 815.75 815.75 815.75 815.75 815.75 815.75 815.75 815.75
17.60 DISCHG 1.07 1.06 1.06 1.05 1.04 1.02 .99 97 94 93
17.60 ELEV 815.75 815.75 815.75 815.75 815.74 815.74 815.74 .
815.74 .
815.74 .
815.74
18.40 DISCHG .91 .90 .89 .88 .87 .87 .86 .86 .65 .85
18.40 ELEV 815.74 815.74 815.73 815.73 815.73 815.73 815.73 815.73 815.73 815.73
19.20 DISCHG .85 .85 .85 .84 .84 .84 .84 .84 .84 .83
19.20 ELEV 815.73 815.73 815.73 815.73 815.73 815.73 815.73 815.73 815.73 815.73
20.00 DISCHG .80 .78 .75 .73 .72 .70 .69 .68 .67 .66
20.00
20.80 ELEV
DISCHG 815.73
.66 815.73
.65 815.73
.65 815.73
.65 815.72
.64 815.72
.64 815.72
.64 815.72
.64 815.72
.64 815.72
.64
20.80 ELEV 815.72 815.72 815.72 815.72 815.72 815.72 815.72 815.72 815.72 815.72
21.60 DISCHG .63 .63 .63 .63 .63 .63 .63 .63 .63 .63
21.60 ELEV 815.72 815.72 815.72 815.72 815.72 815.72 815.72 815.72 815.72 815.72
22.40 DISCHG .63 .63 .63 .63 .63 .63 .63 .63 .63 .63
22.40 ELEV 815.72 815.72 815.72 815.72 815.72 815.72 815.72 815.72 815.72 815.72
23.20 DISCHG .63 .63 .63 .63 .63 .63 .63 .63 .63 .62
23.20 ELEV 815.72 815.72 815.72 815.72 815.72 815.72 815.72 815.72 815.72 815.72
RUNOFF VOLUME ABOVE BASEFLOW 1.77 WAT ERSHED IN CHES, 28.55 CFS- HRS, 2.36 ACRE-FEET; BASEFLOW .00 CFS
OPERATION REACH CROSS SECTION 6
INPUT HY DROGRAPH= 5 OUTPUT HYDROGRAP H= 6
LENGTH = 800.00 FEET INPUT = COE FFICIENTS RELATED TO CROSS SECTIONAL AREA, X= 1.60 , M= 1 .44
MODIFIED ATT-KIN ROUTING COEFFICIENT = .98 PEAK TRAVEL TIME _ .08 HOURS
*** WARNING REACH 6 ATT-KIN COEFF .(C) GREATER THAN 0.667, CONSIDER REDUCING MAIN TIM E INCREMENT ***
PEAK TIME(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATI ON(FEET)
12.29 24.59 (NULL)

TR20 XEQ 9/23/99
REV 09/01/83
TIME(HRS) FIRST HYDROGRAPH POINT = .00 HOURS
6.40 DISCHG .00 .00 .00 .00
7.20 DISCHG 01 O1 O1 01
8.00 DISCHG .01 .02 .02 .02
8.80 DISCHG .03 .03 .03 .03
9.60 DISCHG .05 .05 .05 .05
10.40 DISCHG .07 .08 .08 .08
11.20 DISCHG .12 .13 .14 .15
12.00 DISCHG .29 5.02 17.08 24.02
12.80 DISCHG 8.64 7.45 6.54 5.80
13.60 DISCHG 3.76 3.57 3.39 3.21
14.40 DISCHG 2.33 2.24 2.15 2.07
15.20 DISCHG 1.63 1.60 1.57 1.55
16.00 DISCHG 1.34 1.32 1.31 1.30
16.80 DISCHG 1.23 1.21 1.18 1.16
17.60 DISCHG 1.07 1.07 1.06 1.06
18.40 DISCHG .93 .91 .90 .89
19.20 DISCHG .85 .85 .85 .85
20.00 DISCHG .83 .80 .78 .75
20.80
21.60 DISCHG -
DISCHG 66
63 .66
.63 .65
.63 .65
.63
22.40 DISCHG .63 .63 .63 .63
23.20 DISCHG .63 .63 .63 .63
RUNOFF VOLUME ABOVE BASEFLOW 1.76 WATERSHED INCHES,
GRANDOVER (WEST) COMMERCIAL - POST-DEV. W/PONDS 2 YR, 09/23/99
20 JOB 1
30
TIME INCREMENT = .08 HOURS DRAINAGE AREA = .03 SQ.M
.00 .00 .00 .00 .01 .01
.01 .01 .01 .01 .01 .01
.02 .02 .02 .02 .02 .03
.03 .04 .04 .04 .04 .04
.05 .06 .06 .06 .06 .07
.09 .09 .10 .10 .11 .12
.16 .17 .18 .21 .24 .26
24.27 21.04 17.83 14.78 12.22 10.21
5.23 4.95 4.68 4.43 4.19 3.97
3.05 2.90 2.77 2.65 2.54 2.43
1.99 1.91 1.84 1.77 1.72 1.67
1.51 1.48 1.44 1.41 1.38 1.36
1.29 1.28 1.28 1.27 1.27 1.25
1.14 1.12 1.11 1.10 1.09 1.08
1.05 1.04 1.02 .99 .97 .94
.88 .87 .87 .86 .86 .85
.84 .84 .84 .84 .84 .84
.73 .72 .70 .69 .68 .67
.64 .64 .64 .64 .64 .64
.63 .63 .63 .63 .63 .63
.63 .63 .63 .63 .63 .63
.63 .63 .63 .63 .63 .63
28.43 CFS-HRS, 2.35 ACRE-FE ET; BASEFLOW = .00 CFS
PERATION RUNOFF CROSS SECTION 7
OUTPUT HYDROGRAPH= 7
AREA= 03 SQ MI INPUT RUNOFF CURVE= 85. TIME OF CONCENT RATION= 17 HOURS
INTERNAL HYDROGRAPH TIME INCREMENT= .0227 HOURS
PEAK TIME(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET)
12.01 49.63 (RUNOFF)
TIME(HRS) FIRST HYDROGRAPH POINT = .00 HOURS TIME INCREMENT = .08 HOURS DRAINAGE AREA = .03 SQ.M
7.20 DISCHG .00 .01 .02 .03 .04 .04 .05 .06 .07 .08
8.00 DISCHG .08 .10 .12 .13 .15 .17 .19 .21 .22 .24
8.80 DISCHG .25 .26 .28 .29 .32 .36 .38 .39 .41 .43
9.60 DISCHG .46 .51 .53 .55 .57 .59 .63 .68 .71 .77
10.40 DISCHG 87 .93 1.00 1.16 1.27 1.36 1.54 1.68 1.78 1.98
11.20 DISCHG 2.16 2.28 2.59 2.90 3.25 6.91 11.82 14.59 24.72 40.77
12.00 DISCHG 49.58 43.30 22.69 13.50 10.09 7.56 6.49 6.04 5.47 5.16
12.80 DISCHG 4.98 4.46 4.12 3.98 3.67 3.44 3.35 3.16 2.98 2.92
13.60 DISCHG 2.75 2.56 2.49 2.41 2.30 2.27 2.20 2.10 2.05 2.00
14.40 DISCHG 1.89 1.83 1.79 1.68 1.61 1.60 1.59 1.59 1.59 1.59
15.20 DISCHG 1.59 1.59 1.50 1.41 1.38 1.37 1.37 1.37 1.37 1.37
16.00 DISCHG 1.37 1.37 1.37 1.38 1.38 1.38 1.38 1.35 1.24 1.18
16.80 DISCHG 1.16 1.15 1.15 1.15 1.15 1.15 1.15 1.15 1.15 1.15

J
TR20 XEQ 9/23/99
REV 09/01/83
GRANDOVER (WEST) COM14ERCIAL - POST-DEV. W/PONDS 2 YR, 09/23/99
17.60
18.40 DISCHG
DISCHG 1.16
.93 1.16
.93 1.15
.93 1.09
.93
19.20 DISCHG .93 .93 .93 .93
20.00 DISCHG .72 .71 .70 .70
20.80 DISCHG .70 .70 .70 .70
21.60 DISCHG .70 .70 .70 .70
22.40 DISCHG .70 .70 .70 .71
23.20 DISCHG .71 .71 .71 .71
RUNOFF VOLUME ABOVE BASEFLOW = 2.01 WATERSHED INC HES,
20 JOB 1
30
.98 .94 .93 .93 .93 .93
.93 .93 .93 .93 .93 .93
.93 .93 .93 .93 .86 .76
.70 .70 .70 .70 .70 .70
.70 .70 .70 .70 .70 .70
.70 .70 .70 .70 .70 .70
.71 .71 .71 .71 .71 .71
.71 .71 .71 .71 .64 .53
38.98 CFS-HRS, 3.22 ACRE-FEET; BASEFLOW = .00 CFS
RPERATION ADDHYD CROSS SECTION 8
INPUT HYDROGRAPHS= 7,6 OUTPUT HYDROGRAPH= 5
**ELEVATION OUTPUT OPTION REQUESTED BUT NO ELEVATIONS GIVEN***
PEAK TIME(HRS) PEAK DISCHARGE(CFS)

R 12.03 50.51
IME(HRS) FIRST HYDROG RAPH POINT = .00 HOURS
6.40 DISCHG .00 .00 .00
7.20 DISCHG .01 .02 .03
8.00 DISCHG .10 .11 .13
8.80 DISCHG .28 .29 .31
9.60 DISCHG .51 .55 .58
10.40 DISCHG .94 1.01 1.08
11.20 DISCHG 2.28 2.41 2.73
12.00
12.80 DISCHG
DISCHG 49.88
13.62 48.31
11.91 39.77 3
10.66
13.60 DISCHG 6.51 6.13 5.88
14.40 DISCHG 4.22 4.08 3.94
15.20 DISCHG 3.22 3.19 3.07
- 16.00 DISCHG 2.71 2.69 2.68
16.80 DISCHG 2.39 2.36 2.33
17.60 DISCHG 2.23 2.22 2.22
18.40 DISCHG 1.85 1.84 1.83
19.20 DISCHG 1.78 1.78 1.78
20.00 DISCHG 1.54 1.51 1.48
20.80 DISCHG 1.36 1.36 1.35
21.60 DISCHG 1.34 1.34 1.34
22.40 DISCHG 1.34 1.34 1.34
23.20 DISCHG 1.34 1.34 1.34
RUNOFF VOLUME ABOVE BASEFLOW 1.90 WATERSHED INCHES,

OP ERATION RESVOR STRUCTURE 1
INPUT HYDROGRAPH= S OUTPUT HYDROGRAPH= 4
SURFACE ELEVATION= 798.50
PEAK ELEVATION(FEET)
(NULL)
TIME INCREMENT = .08 HOURS DRAINAGE AREA = OS SQ.M
.00 .00 .00 .00 .00 .01 .01
.04 .05 .06 .06 .07 .08 .09
.15 .17 .19 .21 .23 .25 .26
.32 .36 .39 .41 .43 .45 .47
.61 .63 .65 .69 .74 .78 .84
1.24 1.36 1.45 1.64 1.78 1.89 2.10
3.05 3.41 7.08 12.00 14.79 24.96 41.03
7.53 34.37 28.60 24.33 20.83 17.69 15.37
9.78 8.90 8.39 8.03 7.58 7.17 6.89
5.62 5.36 5.17 4.97 4.74 4.58 4.43
3.75 3.61 3.51 3.43 3.36 3.31 3.26
2.96 2.90 2.85 2.81 2.78 2.75 2.73
2.67 2.67 2.66 2.65 2.62 2.50 2.43
2.31 2.29 2.27 2.26 2.25 2.24 2.23
2.15 2.04 1.98 1.95 1.92 1.89 1.87
1.81 1.81 1.80 1.79 1.79 1.79 1.78
1.78 1.78 1.77 1.77 1.77 1.70 1.60
1.46 1.43 1.42 1.40 1.39 1.38 1.37
.35 1.35 1.35 1.34 1.34 1.34 1.34
.34 1.34 1.34 1.34 1.34 1.34 1.34
.34 1.34 1.34 1.34 1.34 1.34 1.34
.34 1.34 1.34 1.34 1.34 1.27 1.16
67.40 CFS-HRS, 5.57 ACRE-FEET; BASE FLOW = 1
1
1
1
.00 CFS
7
C

TR20 XEQ 9/23/99 GRANDOVER (WEST) COMMERCIAL - POST-DEV. W/PONDS 2 YR, 09/23/ 99 20 JOB 1
REV 09/01/83 30
PEAK TIME(HRS) PEAK DISCHARGE(CFS) P EAK ELEVATI ON(FEET)
12.69 16.43 799.99
IME(HRS) FI RST HYDROGRAPH POINT = .00 HOURS TIME INCREMENT = .08 HOURS DRAINAGE AREA .05 SQ.M
8.80 DISCHG .00 .00 .00 .00 .00 .00 .00 .00 .00 .01
8.80 ELEV 798.50 798.50 798.50 798.50 798.50 798.50 798.50 798.50 798.50 798.53
9.60 DISCHG .O1 .O1 .O1 .O1 .O1 .O1 .O1 .O1 .O1 .O1
9.60 ELEV 798.53 798.53 798.53 798.54 798.54 798.54 798.55 798.55 798.55 798.56
10.40 DISCHG .01 .01 .01 .02 .02 .02 .02 .02 .02 .02
10.40
11.20 ELEV
DISCHG 798.56
.03 798.57
.03 798.57
.03 798.58
.03 798.58
.04 798.59
.04 798.60
.05 798.60
.06 798.61
.08 798.62
.16
11.20 ELEV 798.63 798.64 798.65 798.67 798.68 798.71 798.75 798.82 798.91 799.05
12.00 DISCHG .37 .59 3.53 7.74 11.12 13.56 15.10 16.00 16.39 16.41
12.00 ELEV 799.23 799.42 799.59 799.72 799.82 799.90 799.95 799.97 799.99 799.99
12.80 DISCHG 16.18 15.77 15.23 14.63 14.00 13.36 12.74 12.15 11.58 11.03
12.80 ELEV 799.98 799.97 799.95 799.93 799.91 799.89 799.87 799.85 799.84 799.82
13.60 DISCHG 10.51 10.01 9.53 9.08 8.65 8.24 7.86 7.50 7.16 6.84
13.60 ELEV 799.80 799.79 799.77 799.76 799.75 799.73 799.72 799.71 799.70 799.69
14.40 DISCHG 6.54 6.26 5.99 5.73 5.48 5.25 5.04 4.84 4.66 4.50
14.40
15.20 ELEV
DISCHG 799.68
4.35 799.67
4.21 799.66
4.08 799.66
3.95 799.65
3.83 799.64
3.72 799.63
3.61 799.63
3.51 799.62
3.42 799.62
3.34
15.20 ELEV 799.61 799.61 799.61 799.60 799.60 799.59 799.59 799.59 799.58 799.58
16.00 DISCHG 3.27 3.20 3.14 3.08 3.03 2.99 2.95 2.91 2.87 2.82
16.00 ELEV 799.58 799.58 799.58 799.57 799.57 799.57 799.57 799.57 799.57 799.57
16.80 DISCHG 2.77 2.73 2.68 2.64 2.60 2.56 2.52 2.49 2.46 2.44
16.80 ELEV 799.56 799.56 799.56 799.56 799.56 799.56 799.56 799.56 799.56 799.55
17.60
17.60 DISCHG
ELEV 2.41
799.55 2.39
799.55 2.37
799.55 2.35
799.55 2.32
799.55 2.28
799.55 2.24
799.55 2.21
799.55 2.17
799.55 2.14
799.54
18.40 DISCHG 2.10 2.07 2.04 2.02 1.99 1.97 1.95 1.93 1.91 1.90
18.40 ELEV 799.54 799.54 799.54 799.54 799.54 799.54 799.54 799.54 799.54 799.54
19.20 DISCHG 1.88 1.87 1.86 1.85 1.84 1.83 1.83 1.82 1.81 1.79
19.20 ELEV 799.54 799.54 799.54 799.54 799.54 799.54 799.54 799.54 799.53 799.53
20.00 DISCHG 1.76 1.74 1.71 1.68 1.65 1.62 1.60 1.57 1.55 1.53
20.00 ELEV 799.53 799.53 799.53 799.53 799.53 799.53 799.53 799.53 799.53 799.53
20.80 DISCHG 1.51 1.49 1.48 1.46 1.45 1.44 1.42 1.41 1.41 1.40
20.80 ELEV 799.53 799.53 799.52 799.52 799.52 799.52 799.52 799.52 799.52 799.52
21.60
21.60 DISCHG
ELEV 1.39
799.52 1.38
799.52 1.38
799.52 1.37
799.52 1.37
799.52 1.37
799.52 1.36
799.52 1.36
799.52 1.36
799.52 1.35
799.52
22.40 DISCHG 1.35 1.35 1.35 1.35 1.35 1.34 1.34 1.34 1.34 1.34
22.40 ELEV 799.52 799.52 799.52 799.52 799.52 799.52 799.52 799.52 799.52 799.52
23.20 DISCHG 1.34 1.34 1.34 1.34 1.34 1.34 1.34 1.34 1.34 1.32
23.20 ELEV 799.52 799.52 799.52 799.52 799.52 799.52 799.52 799.52 799.52 799.52
RUNOFF VOLUME ABOVE BASEFLOW = 1.36 WATERSHED INCH ES, 48.32 CFS-HRS, 3.99 ACRE-FEET; BASEFLOW .00 CFS
ERATION REACH CROSS SECTION 10
INPUT HYDROGRAPH= 4 OUTPUT H YDROGRAPH= 6
LENGTH = 800.00 FEET INPUT = COEFFICIENTS RELATED TO CROSS SECTI ONAL AREA, X= 1. 60, M= 1 .44
r_,

TR20 XEQ 9/23/99 GRANDOVER (WEST) COMMERCIAL - POST-DEV. W/PONDS 2 YR, 09/23/99 20
REV 09/01/83 30
140DIFIED ATT-KIN ROUTING COEFFICIENT = .92 PEAK TRAVEL TIME _ .08 HOURS
*** WARNING REACH 10 ATT-KIN COEFF.(C) GREATER THAN 0.667, CONSIDER REDUCING MAIN TIME INCREMENT ***
PEAK TIME(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET)
12.78 16.41 (NULL)
IME(HRS) FIRST HYDROGRAPH POINT = .00 HOURS
9.60 DISCHG .00 .00 .01
10.40 DISCHG O1 O1 O1
11.20 DISCHG .02 .03 .03
12.00 DISCHG .16 .35 .57
12.80 DISCHG 16.40 16.20 15.80
13.60 DISCHG 11.08 10.56 10.06
14.40 DISCHG 6.87 6.57 6.28
15.20 DISCHG 4.51 4.36 4.22
16.00 DISCHG 3.35 3.27 3.20
16.80 DISCHG 2.83 2.78 2.73
17.60 DISCHG 2.44 2.41 2.39
18.40 DISCHG 2.14 2.11 2.07
19.20 DISCHG 1.90 1.88 1.87
20.00 DISCHG 1.79 1.77 1.74
20.80 DISCHG 1.53 1.51 1.49
21.60 DISCHG 1.40 1.39 1.38
22.40 DISCHG 1.35 1.35 1.35
23.20 DISCHG 1.34 1.34 1.34
JOB 1
TIME INCREMENT = .08 HOURS DRAINAGE AREA = .05 SQ.M
.01 .01 .01 .01 .01 .01 .01
.01 .01 .02 .02 .02 .02 .02
.03 .03 .04 .04 .05 .06 .08
3.28 7.36 10.80 13.32 14.95 15.91 16.35
15.28 14.69 14.06 13.41 12.80 12.20 11.63
9.57 9.12 8.69 8.28 7.90 7.53 7.19
6.01 5.75 5.51 5.27 5.06 4.86 4.68
4.09 3.96 3.84 3.73 3.62 3.52 3.43
3.14 3.09 3.04 2.99 2.95 2.91 2.87
2.68 2.64 2.60 2.56 2.53 2.49 2.46
2.37 2.35 2.32 2.28 2.24 2.21 2.17
2.05 2.02 1.99 1.97 1.95 1.93 1.91
1.86 1.85 1.84 1.83 1.83 1.82 1.81
1.71 1.68 1.65 1.63 1.60 1.58 1.55
1.48 1.46 1.45 1.44 1.42 1.41 1.41
1.38 1.37 1.37 1.37 1.36 1.36 1.36
1.35 1.35 1.35 1.34 1.34 1.34 1.34
1.34 1.34 1.34 1.34 1.34 1.34 1.34
RUNOFF VOLUME ABOVE BASEFLOW = 1.36 WATERSHED INCHES, 48.20 CFS-HRS, 3.98 ACRE-FEET; BASEFLOW = .00 CFS
PERATION ADDHYD CROSS SECTION 11
INPUT HYDROGRAPHS= 6,3 OUTPUT HYDROGRAPH= 1
***ELEVATION OUTPUT OPTION REQUESTED BUT NO ELEVATIONS GIVEN***
PEAK TIME(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET)
12.20 262.51 (NULL)
IME(HRS) FIRST HYDROGRAPH POINT =
5.60 DISCHG .00 .00
6.40 DISCHG .01 .01
7.20 DISCHG .03 .04
8.00 DISCHG .07 .07
8.80 DISCHG .12 .13
9.60 DISCHG .20 .22
10.40 DISCHG .32 .33
11.20 DISCHG .41 .43
12.00 DISCHG 87.17 194.01
12.80 DISCHG 92.91 83.38
.00 HOURS TIME INCREMENT = .08 HOURS
.00 .00 .00 .01 .01
.02 .02 .02 .02 .02
.04 .04 .05 .05 .05
.08 .08 .09 .09 .10
.14 .14 .15 .16 .17
.23 .24 .25 .27 .28
.33 .34 .35 .36 .37
.44 .46 .47 .50 .54
258.15 259.02 228.56 192.07 158.73
75.35 69.59 65.34 61.30 57.54
DRAINAGE AREA = .29 SQ.M
.01 .01 .01
.03 .03 .03
.06 .06 .06
.10 .11 .12
.18 .19 .20
.29 .31 .31
.37 .39 .40
.59 .66 9.35
136.53 119.15 104.68
54.12 50.98 48.09

TR20 XEQ 9/23/99 GRANDOVER (WEST) COMMERCIAL - POST-DEV. W/PONDS 2 YR, 09/23/99 20 JOB 1
REV 09/01/83 30
13.60 DISCHG 45.46 43.01 40.69 38.56 36.62 34.84 33.23 31.77 30.39 29.13
14.40 DISCHG 27.95 26.81 25.75 24.74 23.74 22.79 21.94 21.20 20.57 20.04
15.20 DISCHG 19.59 19.21 18.85 18.43 17.96 17.50 17.07 16.71 16.39 16.13
16.00
16.80 DISCHG
DISCHG 15.90
14.38 15.71
14.07 15.55
13.79 15.42
13.54 15.31
13.34 15.21
13.16 15.13
13.02 15.05
12.90 14.92
12.80 14.68
12.71
17.60 DISCHG 12.64 12.58 12.53 12.46 12.31 12.06 11.76 11.47 11.21 10.99
18.40 DISCHG 10.81 10.65 10.52 10.41 10.32 10.24 10.18 10.13 10.08 10.05
19.20 DISCHG 10.01 9.99 9.97 9.95 9.93 9.92 9.91 9.89 9.86 9.74
20.00 DISCHG 9.50 9.22 8.95 8.71 8.50 8.32 8.17 8.05 7.95 7.86
20.80 DISCHG 7.79 7.73 7.68 7.64 7.60 7.57 7.55 7.53 7.51 7.49
21.60 DISCHG 7.48 7.47 7.46 7.45 7.45 7.44 7.43 7.43 7.43 7.42
22.40 DISCHG 7.42 7.42 7.42 7.42 7.42 7.42 7.41 7.41 7.41 7.41
23.20 DISCHG 7.41 7.41 7.42 7.41 7.42 7.42 7.42 7.42 7.39 7.27
RUNOFF VOLUME ABOVE BASEFLOW = 1.76 WATERSHED INCHES, 3 34.77 CFS-HRS, 27 .67 ACRE-F EET; BASEFLOW = .00 CFS
PERATION RUNOFF CROSS SECTION 12
OUTPUT H YDROGRAPH= 2
AREA= .10 SQ MI INPUT RUNOFF CURVE= 82. TIME OF CONCENTRATION= .25 HOURS
INTERNAL HYDROGRAPH TIME INCREMENT= .0333 HOURS
PEAK TIM E(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET)
12.06 133.62 (RUNOFF)
I IME(HRS)
F IRST HYDROGRAPH POINT .00 HOURS TIME INCREMENT = .08 HOURS DRAINAGE AREA = .10 SQ.M
8.00 DISCHG .00 .00 .00 .00 .00 .02 .04 .08 .12 .16
8.80 DISCHG .20 .25 .29 .33 .39 .45 .52 .57 .63 .68
9.60 DISCHG .75 .84 .92 .99 1.06 1.12 1.20 1.30 1.41 1.53
10.40 DISCHG 1.71 1.90 2.08 2.36 2.68 2.94 3.30 3.70 4.04 4.46
11.20 DISCHG 4.96 5.40 5.99 6.78 7.69 12.33 22.99 33
32 51
03 86
67
12.00 DISCHG 122.63 132.09 100.15 63.16 43.67 32.06 25.06 .
21.37 .
18.85 .
17.04
12.80 DISCHG 16.00 14.86 13.62 12.83 12.08 11.24 10.71 10.24 9.68 9.30
13.60 DISCHG 8.93 8.38 7.98 7.72 7.42 7.19 7.02 6.75 6.52 6.36
14.40 DISCHG 6.11 5.87 5.71 5.46 5.20 5.06 5.01 4.98 4.97 4.97
15.20 DISCHG 4.97 4.96 4.83 4.60 4.42 4.35 4.31 4.30 4.29 4.29
16.00 DISCHG 4.29 4.30 4.30 4.30 4.31 4.31 4.31 4.28 4.08 3.85
16.80 DISCHG 3.71 3.66 3.63 3.62 3.62 3.62 3.62 3.62 3.62 3.62
17.60 DISCHG 3.62 3.63 3.62 3.53 3.30 3.09 2.99 2.95 2.93 2.92
18.40 DISCHG 2.92 2.92 2.92 2.92 2.92 2.92 2.92 2.92 2.92 2.92
19.20 DISCHG 2.93 2.93 2.93 2.93 2.93 2.93 2.93 2.93 2.84 2.60
20.00 DISCHG 2.39 2.29 2.24 2.22 2.21 2.21 2.21 2.21 2.21 2.21
20.80 DISCHG 2.21 2.21 2.21 2.21 2.21 2.21 2.21 2.21 2.21 2.22
21.60 DISCHG 2.22 2.22 2.22 2.22 2.22 2.22 2.22 2.22 2.22 2.22
22.40 DISCHG 2.22 2.22 2.22 2.22 2.23 2.23 2.23 2.23 2.23 2.23
23.20 DISCHG 2.23 2.23 2.23 2.23 2.23 2.23 2.23 2.23 2.13 1.89
RUNOFF VOLUME ABOVE BASEFLOW = 1.77 WATERSHED INCHES,
114.51 CFS-HRS, 9.46 ACRE-FEET; BASEFLOW = .00 CFS
U
L

TR20 XEQ 9/23/99 GRANDOVER (WEST) COMMERCIAL - POST-DEV. W/PONDS 2 YR, 09/23 /99 20 JOB 1
REV 09/01/83
30

OPERATION ADDHYD CROSS SECTION 13
INPUT HYDROGRAPHS= 1,2 OUTPUT HYDROGRAPH= 3
***ELEVATION OUTPUT OPTION REQUESTED BUT NO ELEVATIONS GIVEN***

PEAK TIME (HRS) PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET)
12.16 358.33 (NULL)
TIME(HRS) FIRST HYDROG RAPH POINT = .00 HOURS TIME INCREMENT = .08 HOURS DRAINAGE AREA = .39 SQ.M
5.60 DISCHG .00 .00 .00 .00 .00 .01 .01 .01 .01 .01
6.40 DISCHG .01 .01 .02 .02 .02 .02 .02 .03 .03 .03
7.20 DISCHG .03 .04 .04 .04 .05 .05 .05 .06 .06 .06
8.00
8.80 DISCHG
DISCHG 07
.33 .07
.38 .08
.43 .08
.48 .09
.54 .11
.61 .14
.69 .18
.75 .23
.81 .28
.88
9.60 DISCHG .95 1.06 1.15 1.24 1.31 1.39 1.47 1.60 1.72 1.84
10.40 DISCHG 2.03 2.22 2.41 2.70 3.02 3.30 3.66 4.08 4.43 4.86
11.20 DISCHG 5.37 5.82 6.43 7.24 8.17 12.83 23.52 33.92 51.68 96.01
12.00 DISCHG 209.80 326.10 358.30 322.17 272.22 224.13 183.79 157.90 138.01 121.73
12.80 DISCHG 108.91 98.25 88.97 82.43 77.41 72.54 68.25 64.35 60.66 57.39
13.60 DISCHG 54.39 51.40 48.67 46.28 44.03 42.03 40.25 38.52 36.92 35.49
14.40 DISCHG 34.05 32.68 31.45 30.19 28.95 27.86 26.94 26.18 25.54 25.01
15.20 DISCHG 24.56 24.17 23.68 23.03 22.39 21.84 21.39 21.00 20.69 20.42
16.00 DISCHG 20.20 20.01 19.85 19.72 19.61 19.52 19.44 19.33 19.00 18.53
16.80 DISCHG 18.09 17.72 17.42 17.16 16.95 16.78 16.63 16.52 16.42 16.33
17.60 DISCHG 16.27 16.21 16.15 15.99 15.61 15.15 14.75 14.42 14.14 13.91
18.40 DISCHG 13.72 13.57 13.44 13.33 13.24 13.16 13.10 13.05 13.01 12.97
19.20 DISCHG 12.94 12.91 12.89 12.88 12.86 12.85 12.84 12.82 12.70 12.33
20.00 DISCHG 11.89 11.51 11.19 10.93 10.71 10.53 10.38 10.26 10.16 10.07
20.80 DISCHG 10.00 9.94 9.89 9.85 9.82 9.79 9.76 9.74 9.72 9.71
21.60
22.40 DISCHG
DISCHG 9.70
9.64 9.69
9.64 9.68
9.64_ 9.67
9.64 9.66
9.64 9.66
9.64 9.65
9.64 9.65
9.64 9.65
9.64 9.65
9.64
23.20 DISCHG 9.64 9.64 9.65 9.65 9.65 9.65 9.65 9.64 9.52 9.16
RUNOFF VOLUME ABOVE BASEFLOW = 1.76 WATERSHED INCHES, 449.28 CFS-HRS, 37.13 ACRE-FEET; BASEF LOW = .00 CFS
PERATION RESVOR STRUCTURE 15
INPUT HYDROGRAPH= 3 OUTPUT HYDROGRAPH= 4
SURFACE ELEVATION= 770.86
1 PEAK TIME(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET)
12.31 284.32 772.41
?IME(HRS) FIRST HYDROGRAPH POINT = .00 HOURS TIME INCREMENT = .08 HOURS DRAINAGE AREA = .39 SQ.M
® 9.60 DISCHG .01 .01 .01 .01 .01 .01 .01 .01 .01 .01
9.60 ELEV 770.88 770.88 770.88 770.89 770.89 770.89 770.89 770.90 770.90 770.91
10.40 DISCHG .01 .02 .02 .02 .02 .02 .02 .03 .03 .03
10.40 ELEV 770.91 770.91 770.92 770.93 770.93 770.94 770.95 770.95 770.96 770.97
?Jl
J

r
J
J
l

F-I

7
u

TR20 XEQ 9/23/99 GRANDOVER (WEST) COMMERCIAL - POST-DEV. W/PONDS 2 YR, 09/23/ 99 20 JOB 1
REV 09/01/83 30
11.20 DISCHG .04 .04 1.52 3.11 4.48 6.27 9.82 15.45 23.60 38.57
11.20 ELEV 770.99 771.00 771.01 771.02 771.03 771.04 771.06 771.10 771.15 771.24
12.00 DISCHG 72.64 130.84 212.33 272.60 284.19 267.22 237.41 206.04 178.67 158.00
12.00
12.80 ELEV
DISCHG 771.45
145.28 771.81
132.86 772.17
121.16 772.37
110.59 772.41
101.45 772.36
93.56 772.25
86.66 772.15
80.59 772.06
75.20 771.98
70.38
12.80 ELEV 771.90 771.82 771.75 771.68 771.63 771.58 771.53 771.50 771.46 771.43
13.60 DISCHG 66.06 62.14 58.53 55.24 52.23 49.49 47.00 44.73 42.64 40.72
13.60 ELEV 771.41 771.38 771.36 771.34 771.32 771.31 771.29 771.28 771.26 771.25
14.40 DISCHG 38.95 37.29 35.73 34.27 32.87 31.54 30.30 29.19 28.20 27.33
14.40 ELEV 771.24 771.23 771.22 771.21 771.20 771.19 771.19 771.18 771.17 771.17
15.20 DISCHG 26.57 25.91 25.32 24.74 24.13 23.53 22.96 22.43 21.96 21.54
15.20 ELEV 771.16 771.16 771.16 771.15 771.15 771.15 771.14 771.14 771.14 771.13
16.00 DISCHG 21.17 20.85 20.58 20.34 20.14 19.97 19.82 19.69 19.54 19.31
16.00 ELEV 771.13 771.13 771.13 771.13 771.12 771.12 771.12 771.12 771.12 771
12
16.80 DISCHG 19.01 18.68 18.35 18.03 17.74 17.48 17.25 17.05 16.88 .
16.73
16.80 ELEV 771.12 771.12 771.11 771.11 771.11 771.11 771.11 771.11 771.10 771.10
17.60 DISCHG 16.60 16.49 16.40 16.30 16.15 15.92 15.63 15.32 15.01 14.72
17.60 ELEV 771.10 771.10 771.10 771.10 771.10 771.10 771.10 771.09 771.09 771.09
18.40 DISCHG 14.45 14.21 14.00 13.81 13.66 13.52 13.40 13.31 13.22 13.15
18.40 ELEV 771.09 771.09 771.09 771.09 771.08 771.08 771.08 771.08 771.08 771.08
19.20
19.20 DISCHG
ELEV 13.09
771.08 13.04
771.08 13.00
771.08 12.97
771.08 12.94
771.08 12.91
771.08 12.89
771.08 12.87
771.08 12.84
771.08 12.74
771.08
20.00 DISCHG 12.56 12.30 12.02 11.73 11.46 11.21 10.99 10.79 10.62 10.47
20.00 ELEV 771.08 771.08 771.07 771.07 771.07 771.07 771.07 771.07 771.07 771.06
20.80 DISCHG 10.34 10.23 10.14 10.06 9.99 9.93 9.89 9.85 9.81 9.78
20.80 ELEV 771.06 771.06 771.06 771.06 771.06 771.06 771.06 771.06 771.06 771.06
21.60 DISCHG 9.76 9.74 9.72 9.71 9.70 9.69 9.68 9.67 9.66 9.66
21.60 ELEV 771.06 771.06 771.06 771.06 771.06 771.06 771.06 771.06 771.06 771.06
22.40 DISCHG 9.66 9.65 9.65 9.65 9.65 9.64 9.64 9.64 9.64 9.64
22.40 ELEV 771.06 771.06 771.06 771.06 771.06 771.06 771.06 771.06 771.06 771.06
23.20 DISCHG 9.64 9.64 9.64 9.64 9.64 9.65 9.65 9.65 9.63 9.54
23.20 ELEV 771.06 771.06 771.06 771.06 771.06 771.06 771.06 771.06 771.06 771.06
RUNOFF VOLUME ABOVE BASEFLOW 1.73 WATERSHED INCH ES, 44 2.08 CFS-H RS, 36.53 ACRE-FEET; BASEFLOW = .00 CFS
I
OPERATION REACH CROSS SECTION 15
INPUT HYDROGRAPH= 4 OUTPUT HYDROGRAPH=
LENGTH = 1200.00 FEET INPUT = COEFF 5
ICIENTS RELATED TO
CROSS SECTIONAL AREA
X=
85
M= 1
38
, . , .
MODIFIED ATT-KIN ROUTING COEFFICIENT = .8 2 PEAK TRAVEL TIME _ .08 HOURS
*** WARN
ING REACH 15 ATT-KIN COEFF. (C) GREATER THAN 0.667, CONSI DER REDUC ING MAIN TIME INCREMEN T ***
PEAK TIM E(HRS) PEAK DISCHARGE (CFS) PEA K ELEVATI ON(FEET)
12.41 280.13 (NULL)
ME(HRS) FIRST HYDROGRAPH POINT = .00 HOURS TIME INCREME NT = .08 HOURS DRAINAGE AREA = .39 SQ.M
9.60 DISCHG .00 .00 .00 .00 .01 .01 .01 .01 .01 .01
10.40 DISCHG .01 .01 .01 .02 .02 .02 .02 .02 .03 .03
11.20 DISCHG .03 .03 .04 1.26 2.78 4.17 5.90 9.12 14.32 21.95

0
9
TR20 XEQ 9/23/99 GRANDOVER (WEST) COMMERCIAL - POST-DEV. W/PONDS 2 YR, 09/23 /99 20 JOB 1
REV 09/01/83 30
12.00 DISCHG 35.61 66.04 119.30 195.75 258.90 279.68 269.44 243.12 212.65 184.73
12.80 DISCHG 162.76 148.40 135.63 123.74 112.93 103.50 95.33 88.21 81.95 76.40
13.60 DISCHG 71.45 67.02 63.01 59.33 55.97 52.90 50.10 47.55 45.23 43.10
14.40 DISCHG 41.15 39.34 37.65 36.07 34.59 33.17 31.83 30.58 29
44 28
42
15.20 DISCHG 27.52 26.74 26.06 25.45 24.86 24.26 23.66 23.08 .
22.55 .
22.06
16.00 DISCHG 21.63 21.25 20.92 20.64 20.40 20.19 20.01 19.86 19.72 19.57
16.80 DISCHG 19.35 19.07 18.75 18.42 18.10 17.81 17.54 17.30 17.09 16.91
17.60 DISCHG 16.76 16.63 16.51 16.42 16.32 16.18 15.97 15.69 15.39 15.07
18.40 DISCHG 14.78 14.51 14.26 14.04 13.85 13.69 13.55 13.43 13.33 13.24
19.20 DISCHG 13.17 13.11 13.06 13.01 12.98 12.94 12.92 12.90 12.88 12.85
20.00 DISCHG 12.76 12.59 12.35 12.08 11.79 11.52 11.27 11.04 10.83 10.65
20.80 DISCHG 10.50 10.37 10.25 10.16 10.07 10.01 9.95 9.90 9.85 9.82
21.60 DISCHG 9.79 9.76 9.74 9.73 9.71 9.70 9.69 9.68 9.67 9.66
22.40 DISCHG 9.66 9.65 9.65 9.65 9.65 9.65 9.64 9.64 9.64 9
64
23.20 DISCHG 9.64 9.64 9.64 9.64 9.64 9.64 9.65 9.65 9.65 .
9.63
RUNOFF VOLUME ABOVE BASEFLOW 1.73 WATERSHED INCHES, 441.24 CFS-HRS, 36. 46 ACRE-F EET; BASE FLOW .00 CFS

OPERATION RUNOFF CROSS SECTION 16
OUTPUT HYDROGRAPH=
AREA= .14 SQ MI 6
INPUT RUNOFF CURVE=
83. TIME OF CONCENTRATION=
.17 HOU
RS
INTERNAL HYDROGRAPH TIME INCREMENT= .0227 HOURS
PEAK TIME(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATIO N(FEET)
12.01 214.54 (RUNOFF)
16.44 6.19 (RUNOFF)
17.67 5.19 (RUNOFF)
19.66 4.19 (RUNOFF)
T IME(HRS) FIRST HYDROGRAPH POINT = .00 HOURS TI ME INCREMENT = .08 HOURS DRAINAGE AREA = 14 SQ
M
.
.
8.00 DISCHG .02 .05 .09 .14 .20 .27 .34 .40 .47 .53
8.80 DISCHG .59 .65 .71 .78 .89 1.01 1.09 1.17 1.24 1.32
9.60 DISCHG 1.45 1.61 1.72 1.82 1.91 1.99 2.13 2.33 2.48 2.69
10.40 DISCHG 3.07 3.32 3.61 4.22 4.66 5.02 5.74 6.32 6.75 7.57
11.20 DISCHG 8.31 8.84 10.11 11.39 12.86 27.68 47.94 59.96 103.50 173.54
12.00 DISCHG 214.10 188.68 99.30 59.33 44.50 33.40 28.73 26.77 24.23 22.90
12.80
13.60 DISCHG
DISCHG 22.11
12.26 19.80
11.42 18.31
11.11 17.70
10.74 16.32
10.28 15.29
10.11 14.91
9.83 14.05
9.35 13.28
9.15 13.00
8.92
14.40 DISCHG 8.42 8.19 7.99 7.49 7.21 7.13 7.11 7.11 7.11 7.12
15.20 DISCHG 7.12 7.10 6.70 6.31 6.18 6.15 6.14 6.14 6.14 6.15
16.00 DISCHG 6.15 6.15 6.16 6.16 6.17 6.17 6.17 6.05 5.55 5.28
16.80 DISCHG 5.20 5.17 5.17 5.17 5.17 5.17 5.17 5.18 5.18 5.18
17.60 DISCHG 5.18 5.19 5.18 4.88 4.42 4.24 4.18 4.17 4.16 4.16
18.40 DISCHG 4.16 4.17 4.17 4.17 4.17 4.17 4.17 4.18 4.18 4.18
19.20 DISCHG 4.18 4.18 4.18 4.19 4.19 4.19 4.19 4.18 3.88 3.41
20.00 DISCHG 3.23 3.17 3.16 3.15 3.15 3.15 3.15 3.15 3.15 3.15
20.80
21.60 DISCHG
DISCHG 3.16
3.16 3.16
3.17 3.16
3.17 3.16
3.17 3.16
3.17 3.16
3.17 3.16
3.17 3.16
3.17 3.16
3.17 3.16
3.17
22.40 DISCHG 3.17 3.17 3.17 3.17 3.18 3.18 3.18 3.18 3.18 3.18

TR20 XEQ 9/23/99 GRANDOVER (WEST) COMMERCIAL - POST-DEV. W/PONDS 2 YR, 09/23/99 20 JOB 1
REV 09/01/83 30
23.20 DISCHG 3.18 3.18 3.18 3.18 3.18 3.18 3.19 3.18 2.87 2.39
RUNOFF VOLUME ABOVE BASEFLOW = 1.86 WATERSHED INCHES, 167.64 CFS-HRS, 13.85 ACRE-FEET; BASEFLOW = .00 CFS
tPERATION ADDHYD CROSS SECTION 17
INPUT HYDROGRAPHS= 5,6 OUTPUT HYDROGRAPH= 7
***ELEVATION OUTPUT OPTION REQUESTED BUT NO ELEVATIONS GIVEN***
PEAK TIME(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET)
12.05
12.39 257.66
313.22 (NULL)
(NULL)

T IME(HRS) FIRST HYDROG RAPH POINT = .00 HOURS TIME INCR EMENT = .08 HOURS DRAINAGE AREA = .53 SQ.M

8.00 DISCHG .02 .05 .09 .14 .20 .27 .34 .40 .47 .53
8.80 DISCHG .59 .65 .71 .78 .89 1.01 1.09 1.17 1.24 1.32
9.60 DISCHG 1.45 1.61 1.72 1.82 1.91 2.00 2.14 2.34 2.49 2.70
10.40 DISCHG 3.08 3.33 3.63 4.23 4.67 5.04 5.76 6.34 6.77 7.60
11.20 DISCHG 8.34 8.88 10.15 12.65 15.63 31.86 53.83 69.08 117.83 195.49
12.00 DISCHG 249.71 254.72 218.59 255.08 303.40 313.08 298.17 269.88 236.88 207.63
12.80
13.60 DISCHG
DISCHG 184.87
83.71 168.20
78.44 153.94
74.12 141.44
70.07 129.26
66.24 118.79
63.00 110.24
59.93 102.26
56.90 95.23
54.38 89.40
52.02
14.40 DISCHG 49.57 47.53 45.64 43.56 41.80 40.31 38.94 37.68 36.55 35.54
15.20 DISCHG 34.65 33.84 32.76 31.76 31.05 30.41 29.80 29.22 28.69 28.21
16.00 DISCHG 27.78 27.41 27.08 26.80 26.56 26.36 26.18 25.90 25.28 24.85
16.80 DISCHG 24.55 24.24 23.91 23.59 23.27 22.98 22.71 22.48 22.27 22.10
17.60 DISCHG 21.94 21.81 21.70 21.30 20.74 20.42 20.15 19.86 19.55 19.24
18.40
19.20 DISCHG
DISCHG 18.94
17.35 18.67
17.29 18.43
17.24 18.21
17.20 18.03
17.16 17.86
17.13 17.72
17.11 17.61
17.08 17.51
16.76 17.42
16.26
20.00 DISCHG 15.99 15.76 15.51 15.23 14.94 14.67 14.42 14.19 13.99 13.81
20.80 DISCHG 13.65 13.52 13.41 13.31 13.23 13.17 13.11 13.06 13.02 12.98
21.60 DISCHG 12.95 12.93 12.91_
- 12.89 12.88 12.87 12.86 12.85 12.84 12.84
22.40 DISCHG 12.83 12.83 12.83 12.82 12.82 12.82 12.82 12.82 12.82 12.82
23.20 DISCHG 12.82 12.82 12.82 12.83 12.83 12.83 12.83 12.82 12.52 12.02
RUNOFF VOLUME ABOVE BASEFLOW 1.76 WATERSHED INCHES 608
88 CFS -HRS
50 32 ACRE-F EET
BASEFLOW 00 CFS
, . ,
. ; = .
ERATION RESVOR STRUCTURE 18
INPUT HYDROGRAPH= 7 OUTPUT HYDROGRAPH= 1
SURFACE ELEVATION= 753.50
PEAK TIME
H
(
RS) PEA K DISCHARGE( CFS) PEAK ELEVATION(FEET)
12.61 250.02 757.18
®®
?CME(HRS)
®® FIRS T HYDROGRAPH POINT = .00 HOURS TIME INCREMENT = .08 HOURS DRAINAGE AREA = .53 SQ.M
8.00 DISCHG .00 .00 .00 .00 .00 .00 .01 .01 .01 .02
8.00
8.80 ELEV
DISCHG 753.50
.02 753.50
.03 753.50 7
.03 53.50
.04 753.50
.04 753.50
.05 753.50
.06 753.51
.07 753.51
.08 753.51
.09

TR20 XEQ 9/23/99 GRANDOVER (WEST) COMMERCIAL - POST-DEV. W/PONDS 2 YR, 09/23 /99 20 JOB 1
REV 09/01/83 30
8.80 ELEV 753.51 753.51 753.52 753.52 753.52 753.53 753.53 753.54 753.54 753.55
9.60 DISCHG .10 .11 .12 .13 .15 .16 .18 .19 .21 .23
9.60 ELEV 753.55 753.56 753.56 753.57 753.58 753.59 753.59 753.60 753.61 753.62
10.40 DISCHG .25 .28 .30 .33 .36 .40 .44 .49 .53 59
10.40 ELEV 753.63 753.65 753.66 753.67 753.69 753.71 753.73 753.76 753.78 .
753.81
11.20 DISCHG .65 .71 .78 .87 .98 1.23 1.69 2.34 3.11 11.38
11.20 ELEV 753.84 753.87 753.91 753.96 754.01 754.08 754.21 754.41 754.70 755.14
12.00 DISCHG 43.05 88.52 121.39 147.54 181.56 214.28 236.80 248.32 249.55 242.89
12.00 ELEV 755.62 756.06 756.32 756.53 756.75 756.97 757.11 757.17 757.18 757.14
12.80 DISCHG 231.52 218.08 203.35 188.98 175.13 161.93 149.68 139.21 130.23 121.82
12.80 ELEV 757.08 757.00 756.90 756.80 756.71 756.62 756.54 756.46 756.39 756.33
13.60 DISCHG 113.99 106.69 99.94 93.76 88.08 82.88 78.18 73.90 69.95 66.32
13.60 ELEV 756.27 756.21 756.15 756.11 756.06 756.02 755.98 755.93 755.89 755.86
14.40 DISCHG 62.96 59.84 56.97 54.29 51.78 49.46 47.33 45.38 43.59 41.96
14.40 ELEV 755.82 755.79 755.76 755.74 755.71 755.69 755.66 755.64 755.63 755.61
15.20 DISCHG 40.47 39.12 37.86 36.65 35.52 34.48 33.53 32.66 31.86 31.13
15.20 ELEV 755.59 755.58 755.57 755.56 755.54 755.53 755.52 755.52 755.51 755.50
16.00 DISCHG 30.73 30.34 29.94 29.56 29.20 28.85 28.53 28.21 27.88 27.52
16.00 ELEV 755.49 755.49 755.48 755.47 755.46 755.46 755.45 755.45 755.44 755.43
16.80 DISCHG 27.17 26.82 26.47 26.13 25.78 25.45 25.12 24.80 24.49 24.20
16.80
17.60 ELEV
DISCHG 755.43
23.92 755.42
23.67 755.41
23.42 755.41
23.18 755.40
22.91 755.40
22.61 755.39
22.32 755.38
22.03 755.38
21.73 755.37
21.44
17.60 ELEV 755.37 755.36 755.36 755.35 755.35 755.34 755.34 755.33 755.33 755.32
18.40 DISCHG 21.14 20.84 20.55 20.27 20.00 19.74 19.49 19.26 19.05 18.85
18.40 ELEV 755.32 755.31 755.31 755.30 755.30 755.29 755.29 755.28 755.28 755.28
19.20 DISCHG 18.66 18.49 18.34 18.20 18.07 17.95 17.85 17.75 17.65 17.50
19.20 ELEV 755.27 755.27 755.27 755.26 755.26 755.26 755.26 755.26 755.25 755.25
20.00 DISCHG 17.33 17.14 16.95 16.75 16.54 16.32 16.10 15.87 15.65 15.42
20.00 ELEV 755.25 755.24 755.24 755.24 755.23 755.23 755.23 755.22 755.22 755.21
20.80 DISCHG 15.21 15.00 14.81 14.63 14.46 14.30 14.15 14.02 13.89 13.78
20.80 ELEV 755.21 755.21 755.20 755.20 755.20 755.19 755.19 755.19 755.18 755.18
21.60 DISCHG 13.68 13.58 13.50_ 13.42 13.36 13.29 13.24 13.19 13.15 13.11
21.60 ELEV 755.18 755.18 755.18 755.18 755.18 755.17 755.17 755.17 755.17 755.17
22.40 DISCHG 13.07 13.04 13.02 12.99 12.97 12.95 12.93 12.92 12.91 12.90
22.40 ELEV 755.17 755.17 755.17 755.17 755.17 755.17 755.17 755.17 755.17 755.17
23.20 DISCHG 12.89 12.88 12.87 12.87 12.86 12.86 12.85 12.85 12.83 12.76
23.20 ELEV 755.17 755.17 755.17 755.17 755.17 755.17 755.17 755.17 755.17 755.16
RUNOFF VOLUME ABOVE BASEFLOW 1.65 WATERSHED INCHES, 56 8.96 CFS-H RS, 47.02 ACRE-FEET; BASEFLOW = .00 CFS
ECUTIVE CONTROL OPERATION ENDCMP
COMPUTATIONS COMPLETED FOR PASS 1
RECORD
I
EXECUTIVE CONTROL OPERATION ENDJOB
RECORD

TR20 XEQ 9/23/99 GRANDOVER (WES T) COMMERCIAL - POST-DEV. W/PONDS 2 YR, 09/23/99 20 JOB 1
REV 09/01/83 30
UMMARY TABLE 1 - SELECTED RESULTS OF STANDARD AND EXECUTIVE C014TROL INSTRUCTIONS IN THE ORDER PERFORMED
(A STAR(*) AFTER THE PEAK DISCHARGE TIME AND RATE ( CFS) VALUES INDICATES A FLAT TOP HYDROGRAPH

RECTION/ A
STANDARD QUESTION MARK(?)
RAIN INDICATES A HYDROGRAPH WITH PEAK AS LAST
ANTEC MAIN PRECIPITATION POINT.)
PEAK DISCHARGE
STRUCTURE CONTROL DRAINAGE TABLE MOIST TIME --------------- ---------- RUNOFF ------- ----------- -----------
ID OPERATION AREA 4 COND INCREM BEGIN AMOUNT DURATION A140UNT ELEVATI ON TIME RATE
(SQ MI) (HR) (HR) (IN) (HR) (IN) (FT) (HR) (CFS)
ALTERNATE 1 STORM 1
SECTION 1 RUNOFF .24 2 2 .08 .0 3.50 24.00 2.44 --- 12.05 428.33
STRUCTURE
SECTION
I 16
3 RESVOR
REACH. .24
.24 2
2 2
2 .08
.08 .0
.0 3.50
3.50 24.00
24.00 1.85
1.85 799.55
--- 12.20
12.20 264.90
264.90
SECTION 4 RUNOFF .03 2 2 .08 .0 3.50 24.00 2.44 --- 12.04 45.66
STRUCTURE 17 RESVOR .03 2 2 .08 .0 3.50 24.00 1.77 816.56 12.20 24.67
SECTION 6 REACH .03 2 2 .08 .0 3.50 24.00 1.76 --- 12.29 24.59
XSECTION 7 RUNOFF .03 2 2 .08 .0 3.50 24.00 2.01 --- 12.01 49.63
XSECTION
TRUCTURE 8
1 ADDHYD
RESVOR .05
.05 2
2 2
2 .08
.08 .0
.0 3.50
3.50 24.00
24.00 1.90
1.36 ---
799.99 12.03
12.69 50.51
16.43
SECTION 10 REACH .05 2 2 .08 .0 3.50 24.00 1.36 --- 12.78 16.41
SECTION 11 ADDHYD .29 2 2 .08 .0 3.50 24.00 1.76 --- 12.20 262.51
ECTION 12 RUNOFF .10 2 2 .08 .0 3.50 24.00 1.77 --- 12.06 133.62
XSECTION 13 ADDHYD .39 2 2 .08 .0 3.50 24.00 1.76 --- 12.16 358.33
RUCTURE 15 RESVOR .39 2 2 .08 .0 3.50 24.00 1.73 772.41 12.31 284.32
fECTION 15 REACH .39 2 2 .08 .0 3.50 24.00 1.73 --- 12.41 280.13
XSECTION 16 RUNOFF .14 2 2 .08 .0 3.50 24.00 1.86 --- 12.01 214.54
ECTION
[ 17 ADDHYD .53 2 2 .08 .0 3.50 24.00 1.76 --- 12.39 313.22
RUCTURE 18 RESVOR .53 2 2 08 .0 3.50 24.00 1.65 757.18 12.61 250.02

TR20 XEQ 9/23/99 GRANDOVER (WEST) COMMERCIAL - POST-DEV. W/PONDS 2 YR, 09/23/99 20 JOB 1
REV 09/01/83 30
UMMARY TABLE 2 - SELECTED MODIFIED ATT-KIN REACH ROUTINGS IN ORDER OF STANDARD EXECUTIVE CONTROL INSTRUCTIONS
(A STAR(*) AFTER VOLUME ABOVE BASE(IN) INDICATES A HYDROGRAPH TRUNCATED AT A VALUE EXCEEDING BASE + 10
A QUESTION MARK(?) AFTER COEFF.(C) INDICATES PARAMETERS OUTSIDE ACCEPTABLE LIMITS, SEE PREVIOUS WARNI
HYDROGRAPH INFORMATION ROUTING PARAMETERS
OUTFLOW+ VOLUME MAIN ITER- Q AND A PEAK S/Q ATT-
SEC REACH INFLOW OUTFLOW INTERV.AREA BASE- ABOVE TIME ATION EQUATION LENGTH RATIO @PEAK KIN
ID LENGTH PEAK TIME PEAK TIME PEAK TIME FLOW BASE INCR # COEFF POWER FACTOR 0/I (K) COEFF
(FT) (CFS) (HR) (CFS) (HR) (CFS) (HR) (CFS) (IN) (HR) (X) (M) (K*) (Q*) (SEC) (C)
ALTERNATE 1 STORM 1
3 1350 258 12.2 258 12.2 --- --- 0 1.85 .08 0 1.60 1.45 .011 1.000 120 1.00?
6 800 24 12.2 24 12.3 --- --- 0 1.77 .08 1 1.60 1.44 .014 1.000 151 .98?
10 800 16 12.7 16 12.8 --- --- 0 1.36 .08 1 1.60 1.44 .004 1.000 170 .92?
15 1200 284 12.3 280 12.4 --- --- 0 1.73 .08 1 .850 1.38 .016 .984 206 .82?
II
0
TR20 XEQ 9/23/99 GRANDOVER (WEST) COMMERCIAL - POST-DEV. W/PONDS 2 YR, 09/23/99
REV 09/01/83
UMMARY TABLE 3 - DISCHARGE (CFS) AT XSECTIONS AND STRUCTURES FOR ALL STORMS AND ALTERNATES
XSECTION/ DRAINAGE
TRUCTURE AREA STORM NUMBERS..........
ID (SQ MI) 1
STRUCTURE 18 .53
ALTERNATE 1 250.02
STRUCTURE 17 .03
ALTERNATE 1 24.67
STRUCTURE 16 .24
11 ALTERNATE 1 264.90
STRUCTURE 15 .39
ALTERNATE 1 284.32
STRUCTURE 1 .05
ALTERNATE 1 16.43

XSECTION 1 .24
KI ALTERNATE 1 428.33
XSECTION 3 .24
ALTERNATE
S 1 264.90
ECTION 4 .03
ALTERNATE 1 45.66
{SECTION 6 .03
ALTERNATE 1 24.59
11SECTION 7 .03
ALTERNATE 1 49.63
SECTION 8 .05
ALTERNATE 1 50.51
11SECTION 10 .05
ALTERNATE 1 16.41
SECTION 11 .29
ALTERNATE 1 262.51
XSECTION 12 .10
ALTERNATE 1 133.62
20 JOB 1
30

TR20 XEQ 9/23/99 GRANDOVER (WEST) COMMERCIAL - POST-DEV. W/PONDS 2 YR, 09/23/99 20 JOB 1
REV 09/01/83 30
SUMMARY TABLE 3 - DISCHARGE (CFS) AT XSECTIONS AND STRUCTURES FOR ALL STORMS AND ALTERNATES
XSECTION/ DRAINAGE
STRUCTURE AREA STORM NUMBERS..........
ID (SQ MI) 1
XSECTION 13 .39
ALTERNATE 1 358.33
® XSECTION 15 .39
ALTERNATE 1 280.13
XSECTION 16 .14
ALTERNATE 1 214.54
XSECTION 17 .53
ALTERNATE 1 313.22
END OF 1 JOBS IN THIS RUN
Stop - Program terminated.
u
u

d-7,
J
10 YEAR STORM
I
E
0
s
*x++##x*xxx*xxx#***x+x#xx*+##xxxx+#++xx##xxx+#+xx#######x+x#*++x#xxx#xx+++#+#++#
# * TR 20 SIN x
x * HMVersion 3.40
* TR 20 * Date 9/23/99
' * Time 9:38:59
* Project Formulation Hydrology * Input file GDVR10B.t20
x * Output file GDVR10B.out
+++xxx++#x*#xx**+*ixx*+x#+x#x#*#++##****###*xx*##+#++x #*ii#+x*x#++* x#+#+i#*x#+++
xxxxxx
X x xx
X xxxx
X X
X XX XX
X XXXXX
X xX
X X X X X X X
X xXX Xxx x X X X
X X X X X X X
X X X X xX X
X X X XXX X7 CXX XXXXX

s
Full Microcomputer Implementation
by -
Haestad Methods, Inc.
37 Brookside Road * Waterbury, Connecticut 06708 * [phone]

7

TR20 XEQ 9/23/99 GRANDOVER (WEST) COMMERCIAL- POST-DEV. W/PONDS 10 YR, 09/23/99 20
JOB 1
REV 09/01/83 30
FILE NO. 1
COMPUTER PROGRAM FOR PROJECT FORMULATION - HYDROLOGY USER NOTES
THE USERS MANUAL FOR THIS PROGRAM IS THE MAY 1982 DRAFT OF TR-20. CHANGES FROM THE 2/14/74 VERSION INCLUD
REACH ROUTING - THE MODIFIED ATT-KIN ROUTING PROCEDURE REPLACES THE CONVEX METHOD. INPUT DATA PREPARED FO
re PREVIOUS PROGRAM VERSIONS USING CONVEX ROUTING COEFFICIENTS WILL NOT RUN ON THIS VERSION.
THE PREFERRED TYPE OF DATA ENTRY IS CROSS SECTION DATA REPRESENTATIVE OF A REACH. IT IS RECOM14ENDED TH
THE OPTIONAL CROSS SECTION DISCHARGE-AREA PLOTS BE OBTAINED WHENEVER NEW CROSS SECTION DATA IS ENTERED.
THE PLOTS SHOULD BE CHECKED FOR REASONABLENESS AND ADEQUACY OF INPUT DATA FOR THE COMPUTATION OF "M"
VALUES USED IN THE ROUTING PROCEDURE.
GUIDELINES FOR DETERMINING OR ANALYZING REACH LENGTHS AND COEFFICIENTS (X,M) ARE AVAILABLE IN THE USERS
MANUAL. SUMMARY TABLE 2 DISPLAYS REACH ROUTING RESULTS AND ROUTING PARAMETERS FOR COMPARISON AND CHECK
HYDROGRAPH GENERATION - THE PROCEDURE TO CALCULATE THE INTERNAL TIME INCREMENT AND PEAK TIME OF THE UNIT
HYDROGRAPH HAVE BEEN IMPROVED. PEAK DISCHARGES AND TIMES MAY DIFFER FROM THE PREVIOUS VERSION. OUTPUT
HYDROGRAPHS ARE STILL INTERPOLATED, PRINTED, AND ROUTED AT THE USER SELECTED MAIN TIME INCREMENT.
INTERMEDIATE PEAKS - METHOD ADDED TO PROVIDE DISCHARGES AT INTERMEDIATE POINTS WITHIN REACHES WITHOUT ROUT
OTHER - THIS VERSION CONTAINS SOME ADDITIONS TO THE INPUT AND NU14EROUS MODIFICATIONS TO THE OUTPUT. USER
OPTIONS HAVE BEEN MODIFIED AND AUGMENTED ON THE JOB RECORD, RAINTABLES ADDED, ERROR AND WARNING MESSAGE
EXPANDED, AND THE SUMMARY TABLES COMPLETELY REVISED. THE HOLDOUT OPTION IS NOT OPERATIONAL AT THIS TIM
PROGRAM QUESTIONS OR PROBLEMS SHOULD BE DIRECTED TO HYDRAULIC ENGINEERS AT THE SCS NATIONAL TECHNICAL CENT
CHESTER, PA (NORTHEAST) -- 215-499-3933, FORT WORTH, TX (SOUTH) -- 334-5242 (FTS)
LINCOLN, NB (MIDWEST) -- 541-5318 (FTS), PORTLAND, OR (WEST) -- 423-4099 (FTS)
OR HYDROLOGY UNIT, ENGINEERING DIVISION, LANHAM, MD -- 436-7383 (FTS).
PROGRAM CHANGES SINCE MAY 1982:
12/17/82 - CORRECT PEAK RATE FACTOR FOR USER ENTERED DIMHYD
CORRECT REACH ROUTING PEAK TRAVEL TIME PRINTED WITH FULLPRINT OPTION
5/02/83 - CORRECT COMPUTATIONS FOR ---
1. DIVISION OF BASEFLOW IN DIVERT OPERATION
2. HYDROGRAPH VOLUME SPLIT BETWEEN BASEFLOW AND ABOVE BASEFLOW
3. CROSS SECTION DATA PLOTTING POSITION
4. INTERMEDIATE PEAK WHEN "FROM" AREA IS LARGER THAN "THRU" AREA
5. STORAGE ROUTED REACH TRAVEL TIME FOR MULTIPEAK HYDROGRAPH
6. ORDERING "FLOW-FREQ" FILE FRO14 SUMMARY TABLE #3 DATA
7. BASEFLOW ENTERED WITH READHYD
8. LOW FLOW SPLIT DURING DIVERT PROCEDURE #2 WHEN SECTION RATINGS START AT DIFFERENT E
ENHANCEMENTS ---
1. REPLACE USER MANUAL ERROR CODES (PAGE 4.-9 TO 4-11) WITH MESSAGES
2. LABEL OUTPUT HYDROGRAPH FILES WITH CROSS SECTION/STRUCTURE, ALTERNATE AND STORM NO'
09/01/83 - CORRECT INPUT AND OUTPUT ERRORS FOR INTERMEDIATE PEAKS
CORRECT COMBINATION OF RATING TABLES FOR DIVERT
CHECK REACH ROUTING PARAMETERS FOR ACCEPTABLE LIMITS
iiiJJJ ELIMINATE MINIMUM REACH TRAVEL TIME WHEN ATT-KIN COEFFICIENT EQUALS ONE
?lw
U
u
i
d--'

ITR20 XEQ 9/23/99
REV 09/01/83
GRANDOVER (WEST) COMMERCIAL- POST-DEV. W/PONDS 10 YR, 09/23/99 20 JOB 1
30
9EXECUTIVE CONTROL OPERATION INCREM MAIN TIME INCREMENT = .08 HOURS RECORD
NEXECUTIVE CONTROL OPERATION COMPUT FROM XSECTION 1 TO STRUCTURE 18 RECORD
STARTING TIME _ .00 RAIN DEPTH = 5.20 RAIN DURATION= 1.00 RAIN TABLE NO.= 2 ANT. MOIST. COND= 2
ALTERNATE NO.= 1 STORM NO.= 1 MAIN TIME INCREMENT = .08 HOURS

OPERATION RUNOFF CROSS SECTION 1
OUTPUT HYDROGRAPH= 1
AREA= .24 SQ MI INPUT RUNOFF CURVE= 90. TIME OF CONCENTRATION= .25 HOURS
INTERNAL HYDROGRAPH TIME INCRE MENT= .0333 HOURS
PEAK TIM E(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET)
12.05 693.30 (RUNOFF)
16.44 18.55 (RUNOFF)
17.65 15.47 (RUNOFF)
19.64 12.41 (RUNOFF)
23.64 9.33 (RUNOFF)

11 IME (HRS) FIRST HYDROGRAPH POINT = .00 HOURS TIME INCREMENT = .08 HOURS DRAINAGE AREA .24 SQ.M
3.20 DISCHG .00 .00 .00 .00 .00 .00 .00 .01 .05 .14
4.00 DISCHG .27 .40 .54 .68 .82 .96 1.10 1.23 1.36 1.49
4.80 DISCHG 1.62 1.75 1.87 1.99 2.11 2.23 2.34 2.45 2.57 2.68
5.60 DISCHG 2.78 2.89 2.99 3.10 3.20 3.30 3.49 3.88 4.27 4.54
6.40 DISCHG 4.74 4.91 5.06 5.20 5.33 5.47 5.59 5.72 5.84 5.97
7.20 DISCHG 6.08 6.20 6.32 6.43 6.54 6.65 6.76 6.86 6.97 7.07
8.00 DISCHG 7.17 7.42 8.00 8.57 9.05 9.74 10.43 10.88 11.17 11.39
8.80 DISCHG 11.58 11.75 11.91 12.11 12.65 13.42 13.99 14.34 14.60 14.82
9.60
10.40 DISCHG
DISCHG 15.30
22.32 16.14
23.94 16.84
25.29- 17.27
27.72 17.56
30.34 17.80
32.26 18.21
34.89 19.06
37.83 19.89
39.98 20.73
42.67
11.20 DISCHG 45.92 48.42 52.02 57.10 62.71 95.13 166.87 228.29 321.61 501.30
12.00 DISCHG 661.20 676.14 498.70 308.83 209.47 151.19 116.61 98.35 86.05 77.34
12.80 DISCHG 72.30 66.96 61.17 57.50 53.98 50.14 47.67 45.48 42.94 41.18
13.60 DISCHG 39.47 37.02 35.20 33.99 32.63 31.58 30.79 29.59 28.56 27.81
14.40 DISCHG 26.69 25.63 24.90 23.79 22.67 22.04 21.77 21.64 21.59 21.57
15.20 DISCHG 21.56 21.50 20.93 19.89 19.13 18.78 18.63 18.56 18.53 18.52
16.00 DISCHG 18.51 18.51 18.52 18.52 18.52 18.52 18.53 18.37 17.51 16.50
16.80 DISCHG 15.92 15.66 15.55 15.50 15.47 15.46 15.46 15.46 15.46 15.46
17.60
18.40 DISCHG
DISCHG 15.47
12.40 15.47
12.39 15.45
12.39 15.05
12.39 14.05
12.39 13.16
12.39 12.74
12.39 12.54
12.39 12.46
12.40 12.42
12.40
19.20 DISCHG 12.40 12.40 12.40 12.40 12.40 12.40 12.40 12.39 11.99 10.98
20.00 DISCHG 10.09 9.67 9.47 9.38 9.34 9.32 9.31 9.31 9.31 9.31
20.80 DISCHG 9.31 9.31 9.31 9.31 9.31 9.31 9.32 9.32 9.32 9.32
- 21.60 DISCHG 9.32 9.32 9.32 9.32 9.32 9.32 9.32 9.32 9.32 9.32
22.40 DISCHG 9.32 9.32 9.32 9.33 9.33 9.33 9.33 9.33 9.33 9.33
23.20 DISCHG 9.33 9.33 9.33 9.33 9.33 9.33 9.33 9.31 8.91 7.90
l
TR20 XEQ 9/23/99 GRANDOVER (WEST) COMMERCIAL- POST-DEV. W/PONDS 10 YR, 09/23/99 20 _ JOB 1
REV 09/01/83 30
RUNOFF VOLUME ABOVE BASEFLOW = 4.05 WATERSHED INCHES, 627.95 CFS-HRS, 51.89 ACRE-FEET; BASEFLOW .00 CFS
,OPERATION RESVOR STRUCTURE 16
INPUT HYDROGRAPH= 1 OUTPUT HYDROGRAPH= 2
SURFACE ELEVATION= 795.50
PEAK TIME(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET)
12.15 538.18 800.59
F IME(HRS) FIRST HYDROGRAPH POINT .00 HOURS TIME INCREMENT = .08 HOURS DRAINAGE AREA = .24 SQ.M
4.00 DISCHG .00 .00 .00 .00 .00 .00 .01 .01 .01 .01
4.00 ELEV 795.50 795.50 795.50 795.50 795.50 795.50 795.51 795.51 795.52 795.52
4.80
4.80 DISCHG
ELEV O1
795.52 .02
795.53 .02
795.53 .02
795.53 .02
795.54 .03
795.54 .03
795.55 .03
795.56 .04
795.56 .04
795.57
5.60 DISCHG .04 .05 .05 .06 .06 .06 .07 .07 .08 .09
5.60 ELEV 795.57 795.58 795.59 795.59 795.60 795.61 795.61 795.62 795.63 795.64
6.40 DISCHG 09 .10 .10 .11 .12 .13 .13 .14 .15 .16
6.40 ELEV 795.65 795.66 795.67 795.69 795.70 795.71 795.72 795.74 795.75 795.76
7.20 DISCHG .16 .17 .18 .19 .20 .21 .22 .23 .23 .24
7.20 ELEV 795.77 795.79 795.80 795.82 795.83 795.85 795.86 795.88 795.89 795.91
8.00 DISCHG .25 .26 .27 .28 .30 .30 .31 .31 .32 .32
8.00 ELEV 795.92 795.94 795.96 795.97 795.99 796.01 796.04 796.06 796.08 796.11
8.80 DISCHG .33 .33 .34 .34 .35 .36 .36 .37 .37 38
8.80 ELEV 796.13 796.16 796.18 796.21 796.24 796.26 796.29 796.33 796.36 .
796.39
9.60 DISCHG .39 .40 .40 .41 .42 .43 .43 .44 .45 .46
9.60 ELEV 796.42 796.46 796.49 796.53 796.57 796.60 796.64 796.68 796.73 796.77
10.40 DISCHG .47 .48 .49 .51 .52 .53 .54 .55 .57 .58
10.40 ELEV 796.82 796.87 796.92 796.98 797.04 797.11 797.18 797.26 797.35 797.43
11.20 DISCHG .59 .61 .63 .64 3.46 16.81 39.33 77.28 134.99 236.69
11.20
12.00 ELEV
DISCHG 797.53
364.89 797.63
498.51 797.73
537.68- 797.85
478.68 797.97
381.96 798.12
304.47 798.34
241.01 798.63
191.32 798.97
154.44 799.43
129.93
12.00 ELEV 799.99 800.46 800.59 800.39 800.05 799.73 799.45 799.23 799.07 798.94
12.80 DISCHG 113.84 100.93 90.17 81.17 73.74 67.41 62.01 57.50 54.56 52.09
12.80 ELEV 798.85 798.77 798.70 798.65 798.60 798.57 798.53 798.51 798.48 798.46
13.60 DISCHG 49.77 47.50 45.25 43.15 41.21 39.41 37.79 36.29 34.87 33.55
13.60 ELEV 798.44 798.41 798.39 798.37 798.35 798.34 798.32 798.31 798.29 798.28
14.40 DISCHG 32.31 31.10 29.95 28.84 27.74 26.67 25.73 24.94 24.28 23.75
14.40 ELEV 798.27 798.26 798.24 798.23 798.22 798.21 798.20 798.20 798.19 798.19
15.20 DISCHG 23.32 22.97 22.62 22.19 21.66 21.13 20.65 20.24 19.91 19.63
15.20
16.00 ELEV
DISCHG 798.18
19.41 798.18
19.24 798.17
19.09 798.17
18.98 798.17
18.89 798.16
18.82 798.16
18.76 798.15
18.70 798.15
18.55 798.15
18.24
16.00 ELEV 798.14 798.14 798.14 798.14 798.14 798.14 798.14 798.14 798.14 798.13
16.80 DISCHG 17.84 17.44 17.08 16.77 16.52 16.31 16.14 16.01 15.90 15.81
16.80 ELEV 798.13 798.12 798.12 798.12 798.12 798.11 798.11 798.11 798.11 798.11
17.60 DISCHG 15.75 15.69 15.65 15.57 15.37 15.02 14.61 14.22 13.88 13.60
17.60 ELEV 798.11 798.11 798.11 798.11 798.10 798.10 798.10 798.09 798.09 798.09
18.40 DISCHG 13.36 13.17 13.02 12.89 12.79 12.71 12.65 12.60 12.56 12.53
18.40 ELEV 798.09 798.08 798.08 798.08 798.08 798.08 798.08 798.08 798.08 798.08
i
0
OTR20 XEQ 9/23/99
REV 09/01/83
GRANDOVER (WEST) COMMERCIAL- POST-DEV. W/PONDS 10 YR, 09/23/99
20 JOB 1
30
19.20 DISCHG 12.50 12.48 12.47 12.45 12.44 12.43 12.43 12.42 12.38 12.20
ro 19.20 ELEV 798.08 798.08 798.08 798.08 798.08 798.08 798.08 798.08 798.08 798.07
20.00 DISCHG 11.87 11.48 11.10 10.77 10.49 10.26 10.08 9.93 9.80 9.71
20.00 ELEV 798.07 798.07 798.06 798.06 798.06 798.06 798.05 798.05 798.05 798.05
20.80 DISCHG 9.63 9.57 9.52 9.48 9.44 9.42 9.40 9.38 9.37 9.36
20.80 ELEV 798.05 798.05 798.05 798.05 798.05 798.05 798.05 798.05 798.05 798.05
21.60 DISCHG 9.35 9.34 9.34 9.34 9.33 9.33 9.33 9.33 9.33 9.33
21.60
22.40 ELEV
DISCHG 798.05
9.32 798.05
9.32 798.05
9.32 798.05
9.32 798.05
9.32 798.05
9.32 798.05
9.33 798.05
9.33 798.05
9.33 798.05
9.33
22.40 ELEV 798.05 798.05 798.05 798.05 798.05 798.05 798.05 798.05 798.05 798.05
23.20 DISCHG 9.33 9.33 9.33 9.33 9.33 9.33 9.33 9.33 9.29 9.11
23.20 ELEV 798.05 798.05 798.05 798.05 798.05 798.05 798.05 798.05 798.05 798.04
RUNOFF VOLUME ABO VE BASEFLOW 3.46 WATERSHED INCH ES, 536.20 CFS- HRS, 44.31 ACRE-FEET; BASEFLOW .00 CFS
NPERA
IO
T
N REACH CROSS SECTION 3
INPUT HY DROGRAPH= 2 OUTPUT HYDROGRAPH= 3
LENGTH = 1350.00 FEET INPUT = COEFF ICIENTS RELATED TO CROSS SECTIONAL AREA, X= 1.60, M= 1.45
MODIFIED ATT-KIN ROUTI NG COEF FICIENT = 1.00 PEAK TRAVEL TIME _ .00 HOURS
*** WARNING REACH 3 ATT-KIN COEFF.(C) GREATER THAN 0.667, CONSIDER REDUCING MAIN TIME INCREMENT ***
PEAK TIME(HRS)
12.15 PEAK DISCHARGE(CFS)
538.18 PEAK ELEVATION(FEET)
(NULL)
TIME(HRS) FIRST HYDROGRAPH POINT .00 HOURS TIME INCR EMENT = .08 HOURS DRAINAGE AREA = .24 SQ.M
4.00 DISCHG .00 .00 .00 .00 .00 .00 .01 .01 .01 .01
4.80 DISCHG .01 .02 .02 .02 .02 .03 .03 .03 .04 .04
5.60 DISCHG .04 .05 .05 .06 .06 .06 .07 .07 .08 .09
6.40 DISCHG .09 .10 .10 .11 .12 .13 .13 .14 .15 .16
7.20 DISCHG .16 .17 .18- .19 .20 .21 .22 .23 .23 .24
8.00 DISCHG .25 .26 .27 .28 .30 .30 .31 .31 .32 .32
8.80 DISCHG .33 .33 .34 .34 .35 .36 36 37 37 38
. . . .
9.60 DISCHG .39 .40 .40 .41 .42 .43 .43 .44 .45 .46
10.40 DISCHG .47 .48 .49 .51 .52 .53 .54 .55 .57 .58
11.20 DISCHG .59 .61 .63 .64 3.46 16.81 39.33 77.28 134.99 236.69
12.00 DISCHG 364.89 498.51 537.68 478.68 381.96 304.47 241.01 191.32 154.44 129.93
12.80 DISCHG 113.84 100.93 90.17 81.17 73.74 67.41 62.01 57.50 54.56 52.09
13.60 DISCHG 49.77 47.50 45.25 43.15 41.21 39.41 37.79 36.29 34.87 33.55
14.40
15.20 DISCHG
DISCHG 32.31
23.32 31.10
22.97 29.95
22.62 28.84
22.19 27.74
21.66 26.67
21.13 25.73
20.65 24.94
20.24 24.28
19.91 23.75
19.63
16.00 DISCHG 19.41 19.24 19.09 18.98 18.89 18.82 18.76 18.70 18.55 18.24
16.80 DISCHG 17.84 17.44 17.08 16.77 16.52 16.31 16.14 16.01 15.90 15.81
17.60 DISCHG 15.75 15.69 15.65 15.57 15.37 15.02 14.61 14.22 13.88 13.60
18.40 DISCHG 13.36 13.17 13.02 12.89 12.79 12.71 12.65 12.60 12.56 12.53
19.20 DISCHG 12.50 12.48 12.47 12.45 12.44 12.43 12.43 12.42 12.38 12.20
20.00 DISCHG 11.87 11.48 11.10 10.77 10.49 10.26 10.08 9.93 9.80 9.71
20.80 DISCHG 9.63 9.57 9.52 9.48 9.44 9.42 9.40 9.38 9.37 9.36
21.60 DISCHG 9.35 9.34 9.34 9.34 9.33 9.33 9.33 9.33 9.33 9.33

0
1 TR20 XEQ 9/23/99 GRANDOVER (WEST) COMMERCIAL- POST-DEV. W/PONDS 10 YR, 09/23/99
REV 09/01/83
22.40 DISCHG 9.32 9.32 9.32 9.32 9.32 9.32
23.20 DISCHG 9.33 9.33 9.33 9.33 9.33 9.33
20 JOB 1
30
9.33 9.33 9.33 9.33
9.33 9.33 9.29 9.11
RUNOFF VOLUME ABOVE BASEFLOW = 3.46 WATERSHED INCHES, 536.20 CFS-HRS, 44.31 ACRE-FEET; BASEFLOW .00 CFS
OPERATION
RUNOFF CROSS SECTION 4
OUTPUT HYDROGRAPH= 4
AREA= .03 SQ MI INPUT RUNOF F CURVE= 9 0. TIME OF CONCENTRATION= .23 HOURS
INTERNAL HYDROGRAPH TIME INCREMENT= .0307 HOURS
PEAK TIME(HRS) PEAK DISCHARGE (CFS) PEAK ELEVATION (FEET)
12.04 73.24 (RUNOFF)
IME(HRS) FIRST HYDROGRAPH POINT = .00 HOURS TIME INCR EMENT = .08 HOURS D RAINAGE AREA = .03 SQ.M
3.20 DISCHG .00 .00 .00 .00 .00 .00 .00 .00 .01 .02
4.00 DISCHG .03 .04 .06 .07 .09 .10 .12 .13 .14 .16
4.80 DISCHG .17 .18 .20 .21 .22 .23 .25 .26 .27 .28
5.60 DISCHG .29 .30 .31 .32 .34 .35 .37 .41 .45 .48
6.40 DISCHG .50 .51 .53 .54 .56 .57 .59 .60 .61 .62
7.20 DISCHG .64 .65 .66 .67 .68 .70 .71 .72 .73 .74
8.00 DISCHG .75 .78 .84 .90 .95 1.03 1.10 1.14 1.17 1.19
8.80 DISCHG 1.21 1.23 1.24 1.27 1.33 1.41 1.47 1.50 1.53 1.55
9.60 DISCHG 1.60 1.70 1.77 1.81 1.84 1.86 1.91 2.00 2.09 2.18
10.40 DISCHG 2.36 2.53 2.67 2.94 3.21 3.40 3.69 4
00 4
21 4
51
11.20 DISCHG 4.85 5.09 5.49 6.06 6.62 10.71 .
18.81 24.83 .
35.30 .
55.92
12.00 DISCHG 71.56 70.79 48.77 29.11 19.92 14.48 11.28 9.74 8.62 7.84
12.80 DISCHG 7.44 6.86 6.25 5.92 5.54 5.15 4.92 4.69 4.42 4.25
13.60 DISCHG 4.07 3.80 3.63 3.51 3.37 3.27 3.19 3.06 2.96 2.88
14.40 DISCHG 2.76 2.65 2.58 2.45 2.34 2.28 2.26 2.25 2.25 2.25
15.20 DISCHG 2.25 2.24 2.17 2.05 1.98 1.95 1.94 1.93 1.93 1.93
16.00
16.80 DISCHG
DISCHG 1.93
1.65 1.93
1.63 1.93
1.62' 1.93
1.61 1.93
1.61 1.93
1.61 1.93
1.61 1.91
1.61 1.81
1.61 1.70
1.61
17.60 DISCHG 1.61 1.61 1.61 1.56 1.44 1.35 1.32 1.30 1.29 1.29
18.40 DISCHG 1.29 1.29 1.29 1.29 1.29 1.29 1.29 1.29 1.29 1.29
19.20 DISCHG 1.29 1.29 1.29 1.29 1.29 1.29 1.29 1.29 1.24 1.12
20.00 DISCHG 1.03 1.00 .98 .97 .97 .97 .97 .97 .97 .97
20.80 DISCHG .97 .97 .97 .97 .97 .97 .97 .97 .97 .97
21.60 DISCHG .97 .97 .97 .97 .97 .97 .97 .97 .97 .97
22.40 DISCHG .97 .97 .97 .97 .97 .97 .97 .97 .97 .97
23.20 DISCHG .97 .97 .97 .97 .97 .97 .97 .97 .92 .80
RUNOFF VOLUME ABOVE BASEFLOW 4.06 WATERSHED INCHES, 65.47 CFS -HRS, 5.41 ACRE-FEET; BASEFLOW = .00 CFS
ERATION RESVOR STRUCTURE 17
INPUT HYDROGRAPH= 4 OUTPUT HYDROGRAPH= 5
SURFACE ELEVATION= 814.00
PEAK TIME(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET)
12.14 56.73 817.20
I ?ra
TR20 XEQ 9/23/99 GRANDOVER (WEST) COMMERCIAL- POST-DEV. W/PONDS 10 YR, 09/23/99 20
JOB 1
REV 09/01/83 30
TIME(HRS) FIRST HYDROGRAPH POINT .00 HOURS TIME INCREMENT = .08 HOURS DRAINAGE AREA = .03 SQ.M
4.80 DISCHG .00 .00 .00 .01 .01 .01 .01 .01 .01 .01
4.80 ELEV 814.00 814.00 814.00 814.02 814.02 814.03 814.03 814.03 814.04 814.04
5.60 DISCHG .01 .01 .01 .01 .01 .02 .02 .02 .02 .02
5.60 ELEV 814.04 814.05 814.05 814.06 814.06 814.06 814.07 814.07 814.08 814.08
6.40 DISCHG .02 .02 .02 .03 .03 .03 .03 .03 .03 .04
6.40
7.20 ELEV
DISCHG 814.09
.04 814.10
.04 814.10
.04 814.11
.04 814.12
.05 814.12
.05 814.13
.05 814.14
.05 814.15
.05 814.15
.06
7.20 ELEV 814.16 814.17 814.18 814.19 814.19 814.20 814.21 814.22 814.23 814.24
8.00 DISCHG .06 .06 .06 .07 .07 .07 .07 .08 .08 .08
8.00 ELEV 814.25 814.25 814.26 814.28 814.29 814.30 814.31 814.33 814.34 814.35
8.80 DISCHG .09, .09 .10 .10 .10 .11 .11 .12 .12 .12
8.80 ELEV 814.37 814.38 814.40 814.41 814.43 814.45 814.46 814.48 814.50 814.52
9.60 DISCHG .13 .13 .14 .14 .15 .15 .16 .17 .17 .18
9.60 ELEV 814.54 814.56 814.58 814.60 814.62 814.64 814.67 814.69 814.71 814.74
10.40 DISCHG .18 .19 .20 .21 .22 .23 .24 .24 .25 .25
10.40 ELEV 814.77 814.80 814.83 814.86 814.90 814.94 814.98 815.03 815.08 815.13
11.20 DISCHG 26 .26 .27 .28 .28 .29 .57 4.32 11.76 22.70
11.20 ELEV 815.18 815.24 815.30 815.37 815.44 815.54 815.72 815.94 816.20 816.52
12.00 DISCHG 39.23 53.39 56.43 48.12 38.12 29.69 22.92 18.75 15.71 13.33
12.00 ELEV 816.88 817.14 817.19 817.05 816.85 816.67 816.52 816.41 816.32 816.24
12.80 DISCHG 11.52 10.13 8.99 8.07 7.33 6.70 6.17 5.73 5.36 5.13
12.80 ELEV 816.19 816.15 816.11 816.08 816.06 816.04 816.03 816.01 816.00 815.99
13.60
13.60 DISCHG
ELEV 4.96
815.98 4.78
815.97 4.59
815.96 4.41
815.95 4.24
815.94 4.08
815.93 3.93
815.92 3.79
815.91 3.65
815.90 3.52
815.89
14.40 DISCHG 3.40 3.27 3.16 3.04 2.93 2.82 2.72 2.64 2.57 2.51
14.40 ELEV 815.89 815.88 815.87 815.87 815.86 815.85 815.85 815.84 815.84 815.83
15.20 DISCHG 2.47 2.43 2.39 2.34 2.28 2.23 2.18 2.13 2.10 2.07
15.20 ELEV 815.83 815.83 815.83 815.82 815.82 815.82 815.81 815.81 815.81 815.81
16.00 DISCHG 2.04 2.02 2.01 1.99 1.98 1.97 1.96 1.96 1.94 1.91
16.00 ELEV 815.80 815.80 815.80 815.80 815.80 815.80 815.80 815.80 815.80 815.80
16.80 DISCHG 1.87 1.82 1.79- 1.76 1.73 1.71 1.69 1.68 1.67 1.66
16.80 ELEV 815.79 815.79 815.79 815.79 815.79 815.78 815.78 815.78 815.78 815.78
17.60 DISCHG 1.65 1.64 1.64 1.63 1.61 1.57 1.53 1.49 1.46 1.43
17.60 ELEV 815.78 815.78 815.78 815.78 815.78 815.78 815.77 815.77 815.77 815.77
18.40 DISCHG 1.40 1.38 1.37 1.35 1.34 1.33 1.33 1.32 1.31 1.31
18.40 ELEV 815.77 815.77 815.76 815.76 815.76 815.76 815.76 815.76 815.76 815.76
19.20 DISCHG 1.31 1.30 1.30 1.30 1.30 1.30 1.30 1.30 1.29 1.27
19.20 ELEV 815.76 815.76 815.76 815.76 815.76 815.76 815.76 815.76 815.76 815.76
20.00 DISCHG 1.24 1.20 1.16 1.13 1.10 1.08 1.06 1.04 1.03 1.02
20.00 ELEV 815.76 815.75 815.75 815.75 815.75 815.75 815.75 815.74 815.74 815.74
1 20.80 DISCHG 1.01 1.00 1.00 .99 .99 .99 .98 .98 .98 .98
20.80 ELEV 815.74 815.74 815.74 815.74 815.74 815.74 815.74 815.74 815.74 815.74
21.60 DISCHG .98 .98 .97 .97 .97 .97 .97 .97 .97 .97
21.60 ELEV 815.74 815.74 815.74 815.74 815.74 815.74 815.74 815.74 815.74 815.74
22.40 DISCHG .97 .97 .97 .97 .97 .97 .97 .97 .97 .97
22.40 ELEV 815.74 815.74 815.74 815.74 815.74 815.74 815.74 815.74 815.74 815.74
23.20 DISCHG .97 .97 .97 .97 .97 .97 .97 .97 .97 .95

TR20 XEQ 9/23/99 GRANDOVER (WEST) COMMERCIAL- POST-DEV. W/PONDS 10 YR, 09/23/99 20 JOB 1
REV 09/01/83
30
23.20 ELEV 815.74 815.74 815.74 815.74 815.74 815.74 815.74 815.74 815.74 815.74
RUNOFF VOLUME A BOVE BASEFLOW = 3
37 WATERSHED INCHES 54
45 CFS
H
S
.
, . -
R
, 4 .50 ACRE-FEET ; B ASEFLOW .00 CFS
OPERATION REACH CROSS SECTION 6
INPUT HYDROGRAPH= 5 OUTPUT HYDROGRAPH= 6
LENGTH = 800.00 FEET INPUT = COEFFICIENTS RELATED T O CROSS SECTIONAL AREA, X= 1.60, M= 1.44
MODIFIE D ATT
K
-
IN ROU TING COEFFICIENT = 1.00 PEAK TRAVE L TIME = .00 HOURS
*** WARNING REACH 6 ATT-KIN COEFF.(C) GREATER THAN 0.667, CON SIDER REDUCING MAIN TIME INCR EMENT ***
PEAK TIME(HRS) PEAK DISCHARGE(CFS) P EAK ELEVATION(FEET)

IME(HRS) 12.14
FIRST HY 56.73 (NULL)
DROGRAPH POINT = .00 HOURS TIME INCREMENT = .08 HOURS DRAINAGE AREA .03 SQ.M
4.80 DISCHG .00 .00 .00 .01 .01 .01 .01 .01 .01 .01
5.60 DISCHG .01 .01 .01 .01 .01 .02 .02 .02 .02 .02
6.40 DISCHG .02 .02 .02 .03 .03 .03 .03 .03 .03 .04
7.20 DISCHG .04 .04 .04 .04 .05 .05 .05 .05 .05 .06
8.00 DISCHG .06 .06 .06 .07 .07 .07 .07 .08 .08 .08
8.80 DISCHG .09 .09 .10 .10 .10 .11 .11 .12 .12 .12
9.60 DISCHG .13 .13 .14 .14 .15 .15 .16 .17 .17 .18
10.40 DISCHG .18 .19 .20 .21 .22 .23 .24 .24 25 25
11.20 DISCHG 26 .26 .27 .28 .28 .29 .57 4.32 .
11.76 .
22.70
12.00 DISCHG 39.23 53.39 56.43 48.12 38.12 29.69 22.92 18.75 15.71 13.33
12.80 DISCHG 11.52 10.13 8.99 8.07 7.33 6.70 6.17 5.73 5.36 5.13
13.60 DISCHG 4.96 4.78 4.59 4.41 4.24 4.08 3.93 3.79 3.65 3.52
14.40 DISCHG 3.40 3.27 3.16 3.04 2.93 2.82 2.72 2.64 2.57 2.51
15.20 DISCHG 2.47 2.43 2.39 2.34 2.28 2.23 2.18 2.13 2.10 2.07
16.00
16.80 DISCHG
DISCHG 2.04
1.87 2.02 2.01 1.99
1.82 1.79- 1.76 1.98
1.73 1.97
1.71 1.96
1.69 1.96
1.68 1.94
1.67 1.91
1.66
17.60 DISCHG 1.65 1.64 1.64 1.63 1.61 1.57 1.53 1.49 1.46 1.43
18.40 DISCHG 1.40 1.38 1.37 1.35 1.34 1.33 1.33 1.32 1.31 1.31
19.20 DISCHG 1.31 1.30 1.30 1.30 1.30 1.30 1.30 1.30 1.29 1.27
20.00 DISCHG 1.24 1.20 1.16 1.13 1.10 1.08 1.06 1.04 1.03 1.02
20.80 DISCHG 1.01 1.00 1.00 .99 .99 .99 .98 .98 .98 .98
21.60 DISCHG .98 .98 .97 .97 .97 .97 .97 .97 .97 .97
22.40 DISCHG .97 .97 .97 .97 .97 .97 .97 .97 .97 .97
23.20 DISCHG .97 .97 .97 .97 .97 .97 .97 .97 .97 .95
RUNOFF VOLUME ABOVE BASEFLOW 3.37 WATERSHED INCHES, 54.45 CFS-HRS, 4.50 ACRE-FEET; BASEFLOW = .00 CFS
PERATION RUNOFF CROSS SECTION 7
OUTPUT HYDROGRAPH= 7
AREA= .03 SQ MI INPUT RUNOFF CURVE= 85. TIME OF CONCENTRATION= .17 HOURS
INTERNAL HYDROGRAPH TIME INCREMENT= .0227 HOURS
PEAK TIM E(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET)
12.00 85.66 (RUNOFF)
C

L

J

7
ITR20 XEQ 9/23/99
REV 09/01/83
GRANDOVER (WEST) COMMERCIAL- POST-DEV. W/PONDS 10 YR, 09/23/99
20 _ JOB 1
30
TIME MRS) FIRST HYDROGRAPH POINT = .00 HOURS TIME INCREMENT = .08 HOURS DRAINAGE AREA = .03 SQ.M
4.80 DISCHG .00 .00 .00 .00 .00 .00 .00 .00 .01 .02
5.60 DISCHG .03 .04 .06 .07 .08 .09 .11 .14 .16 .17
6.40
7.20 DISCHG
DISCHG 19
.34 .21
.36 .22
.37 .24
.39 .26
.40 .27
.41 .29
.43 .30
.44 .32
.45 .33
.47
8.00 DISCHG .48 .52 .58 .61 .66 .73 .78 .81 .83 .86
8.80 DISCHG .88 .90 .92 .95 1.03 1.10 1.14 1.17 1.20 1.22
9.60 DISCHG 1.30 1.40 1.45 1.48 1.51 1.54 1.61 1.72 1.79 1.89
10.40 DISCHG 2.11 2.24 2.38 2.72 2.94 3.11 3.48 3.75 3.92 4.31
11.20 DISCHG 4.64 4.85 5.44 6.02 6.66 13.83 23.10 27.78 45.42 72.50
12.00 DISCHG 85.66 73.42 38.17 22.52 16.72 12.47 10.68 9.92 8.96 8.45
12.80 DISCHG 8.14 7.28 6.72 6.49 5.97 5.59 5.44 5.13 4.84 4.73
13.60 DISCHG 4.46 4.15 4.04 3.90 3.73 3.66 3.56 3.38 3.31 3.22
14.40
15.20 DISCHG
DISCHG 3.04
2.56 2.96
2.55 2.88
2.41 2.70
2.27 2.60
2.22 2.57
2.21 2.56
2.20 2.56
2.20 2.56
2.20 2.56
2.20
16.00 DISCHG 2.20 2.20 2.21 2.21 2.21 2.21 2.21 2.16 1.98 1.89
16.80 DISCHG 1.86 1.85 1.84 1.84 1.84 1.84 1.84 1.85 1.85 1.85
17.60 DISCHG 1.85 1.85 1.84 1.74 1.57 1.51 1.49 1.48 1.48 1.48
18.40 DISCHG 1.48 1.48 1.48 1.48 1.48 1.48 1.48 1.48 1.48 1.48
19.20 DISCHG 1.48 1.48 1.48 1.48 1.48 1.48 1.48 1.48 1.37 1.21
20.00 DISCHG 1.14 1.12 1.12 1.12 1.11 1.11 1.11 1.12 1.12 1.12
20.80 DISCHG 1.12 1.12 1.12 1.12 1.12 1.12 1.12 1.12 1.12 1.12
21.60 DISCHG 1.12 1.12 1.12 1.12 1.12 1.12 1.12 1.12 1.12 1.12
22.40 DISCHG 1.12 1.12 1.12 1.12 1.12 1.12 1.12 1.12 1.12 1.12
23.20 DISCHG 1.12 1.12 1.12 1.12 1.12 1.12 1.12 1.12 1.01 .84
RUNOFF VOLUME ABOVE BASEFLOW 3.55 WATERSHED INCHE S, 68.70 CFS-HR S, 5 .68 ACRE-FEET; BASEFLOW = .00 CFS
ADDHYD
1PERATION CROSS SECTION 8
INPUT HYDROGRAPHS= 7,6 OUTPUT HYDROGRAPH= 5
**ELEVATION OUTPUT OPTION REQUEST ED BUT NO ELEVATIONS GIVEN* **
PEAK TIM E(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET)
12.04 130.17 (NULL)
TIME(HRS) FIRST HYDROGRAPH POINT = .00 HOURS T IME INCREMENT = .08 HOURS DRAINAGE AREA = .05 SQ.M
4.80 DISCHG .00 .00 .00 .01 .01 .01 .01 .01 .02 .03
5.60 DISCHG .04 .06 .07 .08 .09 .11 .12 .15 .18 .19
6.40 DISCHG .21 .23 .25 .27 .28 .30 .32 .33 .35 .37
7.20 DISCHG .38 .40 .42 .43 .45 .46 .48 49 51 .52
8.00 DISCHG .54 .58 .64 .68 .73 .80 .85 .
.89 .
.92 .94
8.80 DISCHG .97 .99 1.02 1.05 1.13 1.21 1.25 1.29 1.32 1.35
9.60 DISCHG 1.43 1.53 1.59 1.63 1.66 1.69 1.77 1.89 1.96 2.07
10.40 DISCHG 2.30 2.43 2.58 2.93 3.16 3.33 3.71 3.99 4.17 4.57
11.20 DISCHG 4.90 5.11 5.71 6.29 6.94 14.13 23.67 32.11 57.17 95.20
12.00 DISCHG 124.89 126.81 94.59 70.64 54.83 42.16 33.59 28.66 24.66 21.78

I
TR20 XEQ 9/23/99 GRANDOVER (WEST) COMMERCIAL- POST-DEV. W/PONDS 10 YR, 09/23 /99 20 JOB 1
REV 09/01/83 30
1
12.80 DISCHG 19.66 17.41 15.72 14.56 13.30 12.29 11.61 10.86 10.20 9.87
13.60 DISCHG 9.42 8.93 8.63 8.31 7.97 7.74 7.49 7.17 6.96 6.74
14.40 DISCHG 6.44 6.23 6.04 5.75 5.53 5.39 5.29 5.20 5.13 5.08
15.20 DISCHG 5.03 4.98 4.80 4.61 4.50 4.43 4.38 4.33 4.30 4.27
16.00
16.80 DISCHG
DISCHG 4.25
3.72 4.23
3.67 4.21
3.63 4.20
3.60 4.19
3.58 4.18
3.56 4.17
3.54 4.12
3.52 3.92
3.51 3.79
3.50
17.60 DISCHG 3.50 3.49 3.48 3.37 3.18 3.08 3.02 2.97 2.94 2.91
18.40 DISCHG 2.88 2.86 2.85 2.83 2.82 2.81 2.81 2.80 2.80 2.79
19.20 DISCHG 2.79 2.79 2.79 2.78 2.78 2.78 2.78 2.78 2.66 2.48
20.00 DISCHG 2.38 2.32 2.28 2.24 2.22 2.19 2.17 2.16 2.15 2.14
20.80 DISCHG 2.13 2.12 2.11 2.11 2.11 2.10 2.10 2.10 2.10 2.09
21.60 DISCHG 2.09 2.09 2.09 2.09 2.09 2.09 2.09 2.09 2.09 2.09
22.40 DISCHG 2.09 2.09 2.09 2.09 2.09 2.09 2.09 2.09 2.09 2.09
23.20 DISCHG 2.09 2.09 2.09 2.09 2.09 2.09 2.09 2.09 1.98 1.79
t RUNOFF VOLUME ABOVE BASEFLOW 3.47 WATERSHED INCHES, 123.14 CFS -HRS, 10 .18 ACRE-FEET; BASEFLOW = .00 CFS
? PERATION RESVOR STRUCTURE 1
INPUT HYDROGRAPH= 5 OUTPUT HYDROGRAPH = 4
SURFACE ELEVATION= 798.50
PEAK TIM E(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET)
12.30 59.77 800.68
'IME(HRS) F IRST HYDROGRAPH POINT = .00 HOURS TIME INCREMENT = .08 HOURS DRAINAG E AREA = .05 SQ.M
7.20 DISCHG .00 .00 .00 .01 .01 .01 .01 .01 .01 .01
7.20 ELEV 798.50 798.50 798.50 798.53 798.53 798.53 798.53 798.53 798.54 798.54
8.00 DISCHG .O1 .O1 .O1 .O1 .O1 .O1 .O1 .O1 .O1 .O1
8.00 ELEV 798.54 798.54 798.55 798.55 798.55 798.56 798.56 798.56 798.57 798.57
8.80 DISCHG .02 .02 .02 .02 .02 .02 .02 .02 .02 .03
8.80
9.60 ELEV
DISCHG 798.58
.03 798.58
.03 798.59
.03- 798.59
.03 798.60
.03 798.60
.03 798.61
.04 798.61
.04 798.62
.04 798.63
.04
9.60 ELEV 798.63 798.64 798.65 798.65 798.66 798.67 798.68 798.69 798.69 798.70
10.40 DISCHG .04 .05 .05 .05 .05 .06 .06 .06 .07 .07
10.40 ELEV 798.71 798.73 798.74 798.75 798.76 798.78 798.80 798.81 798.83 798.85
11.20 DISCHG .07 .08 .08 .09 .10 .13 .22 .34 .54 6.14
11.20 ELEV 798.87 798.90 798.92 798.95 798.98 799.03 799.10 799.21 799.38 799.67
12.00 DISCHG 19.38 38.02 51.98 58.79 59.67 57.18 52.89 48.05 43.91 40.29
1 12.00 ELEV 800.04 800.36 800.58 800.67 800.68 800.65 800.59 800.52 800.46 800.40
12.80 DISCHG 36.86 33.65 30.66 27.94 25.49 23.27 21.28 19.53 17.95 16.66
12.80 ELEV 800.34 800.29 800.24 800.19 800.15 800.11 800
08 800
05 800
02 799
99
13.60 DISCHG 15.82 15.02 14.28 13.58 12.93 12.32 .
11.76 .
11.23 .
10.73 .
10.26
13.60 ELEV 799.97 799.94 799.92 799.90 799.88 799.86 799.84 799.83 799.81 799.80
14.40 DISCHG 9.82 9.41 9.01 8.64 8.28 7.94 7.63 7.34 7.08 6.85
14.40 ELEV 799.78 799.77 799.76 799.75 799.73 799.72 799.71 799.71 799.70 799.69
15.20 DISCHG 6.63 6.44 6.25 6.07 5.88 5.71 5.56 5.41 5.28 5.16
15.20 ELEV 799.68 799.68 799.67 799.67 799.66 799.66 799.65 799.65 799.64 799.64
16.00 DISCHG 5.05 4.96 4.87 4.79 4.72 4.65 4.60 4.54 4.48 4.41
16.00 ELEV 799.64 799.63 799.63 799.63 799.62 799.62 799.62 799.62 799.62 799.62
d

ITR20 XEQ 9/23/99
REV 09/01/83
GRANDOVER (WEST) COMMERCIAL- POST-DEV. W/PONDS 10 YR, 09/23/99
20 JOB 1
30
16.80 DISCHG 4.33 4.25 4.18 4.11
16.80 ELEV 799.61 799.61 799.61 799.61
17.60 DISCHG 3.77 3.73 3.71 3.67
17.60 ELEV 799.60 799.59 799.59 799.59
18.40
18.40 DISCHG
ELEV 3.28
799.58 3.23
799.58 3.18
799.58 3.14
799.58
19.20 DISCHG 2.94 2.92 2.91 2.89
19.20 ELEV 799.57 799.57 799.57 799.57
20.00 DISCHG 2.76 2.71 2.66 2.61
20.00 ELEV 799.56 799.56 799.56 799.56
20.80 DISCHG 2.35 2.32 2.30 2.27
20.80 ELEV 799.55 799.55 799.55 799.55
21.60 DISCHG 2.17 2.16 2.15 2.15
21.60 ELEV 799.55 799.55 799.55 799.55
22.40
22.40 DISCHG
ELEV 2.11
799.54 2.11
799.54 2.11
799.54 2.11
799.54
23.20 DISCHG 2.10 2.10 2.10 2.10
23.20 ELEV 799.54 799.54 799.54 799.54

RUNOFF VOLUME ABOVE BASEFLOW 2.92 WATERSHED INCHES,
4.05 3.99 3.94 3.89 3.85 3.80
799.60 799.60 799.60 799.60 799.60 799.60
3.62 3.56 3.50 3.44 3.38 3.33
799.59 799.59 799.59 799.59 799.58 799.58
3.10 3.07 3.04 3.01 2.99 2.96
799.57 799.57 799.57 799.57 799.57 799.57
2.88 2.87 2.86 2.85 2.83 2.80
799.57 799.57 799.57 799.57 799.57 799.57
2.57 2.52 2.48 2.44 2.41 2.38
799.56 799.56 799.56 799.55 799.55 799.55
2.25 2.24 2.22 2.21 2.19 2.18
799.55 799.55 799.55 799.55 799.55 799.55
2.14 2.13 2.13 2.12 2.12 2.12
799.55 799.54 799.54 799.54 799.54 799.54
2.10 2.10 2.10 2.10 2.10 2.10
799.54 799.54 799.54 799.54 799.54 799.54
2.09 2.09 2.09 2.09 2.09 2.06
799.54 799.54 799.54 799.54 799.54 799.54
103.56 CFS- HRS, 8.56 ACRE-FEET; BASEFLOW = .00 CFS
PERATION REACH CROSS SECTION 10
INPUT HYDROGRAPH= 4 OUTPUT HYDROGRAPH= 6
LENGTH = 800.00 FEET INPUT = COEFFICIENTS RELATED TO CROSS SECTIONAL AREA, X= 1.60, M= 1.44
MODIFIED ATT-KIN ROUTING COEFFICIENT = 1.00 PEAK TRAVEL TIME _ .00 HOURS
*** WARNING REACH 10 ATT-KIN COEFF.(C) GREATER THAN 0.667, CONSIDER REDUCING MAIN TIME INCREMENT ***
PEAK TIME(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET)

IME(HRS) 12.30
FIRST 59.77 (NULL)
HYDROGRAPH POINT = .00 HOURS TIME INCR EMENT = .08 HOURS DRAINAGE AREA = .05 SQ.M
7.20 DISCHG .00 .00 .00 .01 .01 .01 .01 .01 .01 .01
8.00 DISCHG .01 .01 .01 .01 .01 .01 .01 .01 .01 .01
8.80 DISCHG .02 .02 .02 .02 .02 .02 .02 .02 .02 .03
9.60 DISCHG .03 .03 .03 .03 .03 .03 .04 .04 .04 .04
10.40 DISCHG .04 .05 .05 .05 .05 .06 .06 .06 .07 .07
11.20 DISCHG .07 .08 .08 .09 .10 .13 .22 .34 .54 6.14
12.00 DISCHG 19.38 38.02 51.98 58.79 59.67 57.18 52.89 48.05 43.91 40.29
12.80
13.60 DISCHG
DISCHG 36.86
15.82 33.65
15.02 30.66
14.28 27.94
13.58 25.49
12.93 23.27
12.32 21.28
11.76 19.53
11.23 17.95
10.73 16.66
10.26
14.40 DISCHG 9.82 9.41 9.01 8.64 8.28 7.94 7.63 7.34 7.08 6.85
15.20 DISCHG 6.63 6.44 6.25 6.07 5.88 5.71 5.56 5.41 5.28 5.16
16.00 DISCHG 5.05 4.96 4.87 4.79 4.72 4.65 4.60 4.54 4.48 4.41
16.80 DISCHG 4.33 4.25 4.18 4.11 4.05 3.99 3.94 3.89 3.85 3.80
17.60 DISCHG 3.77 3.73 3.71 3.67 3.62 3.56 3.50 3.44 3.38 3.33
18.40 DISCHG 3.28 3.23 3.18 3.14 3.10 3.07 3.04 3.01 2.99 2.96
19.20 DISCHG 2.94 2.92 2.91 2.89 2.88 2.87 2.86 2.85 2.83 2.80
20.00 DISCHG 2.76 2.71 2.66 2.61 2.57 2.52 2.48 2.44 2.41 2.38

ITR20 XEQ 9/23/99 GRANDOVER (WEST) COMMERCIAL- POST-DEV. W/PONDS 10 YR, 09/23/99
REV 09/01/83

20.80 DISCHG 2.35 2.32 2.30 2.27 2.25 2.24
21.60 DISCHG 2.17 2.16 2.15 2.15 2.14 2.13
22.40 DISCHG 2.11 2.11 2.11 2.11 2.10 2.10
23.20 DISCHG 2.10 2.10 2.10 2.10 2.09 2.09
RUNOFF VOLUME ABOVE BASEFLOW = 2.92 WATERSHED INCHES, 103. 56 CFS-HRS,
PERATION ADDHYD CROSS SECTION 11
INPUT HYDROGRAPHS= 6,3 OUTPUT HYDROGRAPH= 1
***ELEVATION OUTPUT OPTION REQUESTED BUT NO ELEVATIONS GIVEN***

20 JOB 1
30
2.22 2.21 2.19 2.18
2.13 2.12 2.12 2.12
2.10 2.10 2.10 2.10
2.09 2.09 2.09 2.06
8.56 ACRE-FEET; BASEFLOW = .00 CFS
PEAK TIME(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET)
12. 16 589.66 (NULL)
? IME(HRS) FIRST HYDROGRAPH POINT = .00 HOURS TIME INCR EMENT = .08 HOURS DRAINAGE AREA .29 SQ.M
4.00 DISCHG .00 .00 .00 .00 .00 .00 .01 .01 .01 .01
4.80 DISCHG .01 .02 .02 .02 .02 .03 .03 .03 .04 .04
5.60 DISCHG .04 .05 .05 .06 .06 .06 .07 .07 .08 .09
6.40 DISCHG .09 .10 .10 .11 .12 .13 .13 .14 .15 .16
7.20 DISCHG .16 .17 .18 .20 .20 .21 .22 .23 .24 .25
8.00 DISCHG .26 .27 .28 .29 .31 .31 .32 .33 .33 .34
8.80 DISCHG .34 .35 .36 .36 .37 .38 .38 .39 .40 .41
9.60 DISCHG .41 .42 .43 .44 .45 .46 .47 .48 .49 .50
10.40 DISCHG .51 .53 .54 .56 .57 .59 .60 .62 .63 .65
11.20 DISCHG 67 .69 .71 .73 3.55 16.94 39.54 77.62 135.53 242.83
12.00 DISCHG 384.27 536.53 589.66 537.47 441.63 361.66 293.90 239.37 198.35 170.21
12.80 DISCHG 150.70 134.58 120.83 109.11 99.23 90.68 83.29 77.03 72.51 68.75
13.60 DISCHG 65.59 62.52 59.53 56.73 54.14 51.74 49.55 47.52 45.60 43.82
14.40 DISCHG 42.13 40.50 38.96 37.48 36.02 34.62 33.36 32.28 31.37 30.60
15.20 DISCHG 29.95 29.40 28.87 28.25 27.54 26.84 26.21 25.66 25.19 24.80
16.00
16.80 DISCHG
DISCHG 24.47
22.17 24.19
21.69 23.96
21.26 23.77
20.88 23.61
20.57 23.47
20.30 23.36
20.08 23.24
19.90 23.03
19.75 22.65
19.62
17.60 DISCHG 19.51 19.43 19.35 19.24 18.99 18.58 18.11 17.66 17.27 16.92
18.40 DISCHG 16.64 16.40 16.20 16.04 15.90 15.79 15.69 15.61 15.55 15.49
19.20 DISCHG 15.44 15.41 15.37 15.35 15.32 15.30 15.29 15.27 15.21 15.00
20.00 DISCHG 14.63 14.19 13.76 13.38 13.06 12.79 12.56 12.37 12.21 12.08
20.80 DISCHG 11.98 11.89 11.81 11.75 11.70 11.65 11.62 11.59 11.56 11.54
21.60 DISCHG 11.52 11.51 11.49 11.48 11.47 11.46 11.46 11.45 11.45 11.44
22.40 DISCHG 11.44 11.43 11.43 11.43 11.43 11.43 11.43 11.43 11.42 11.42
23.20 DISCHG 11.42 11.42 11.42 11.42 11.42 11.42 11.42 11.42 11.37 11.17
RUNOFF VOLUME ABOVE BASEFLOW = 3.36 WATERSHED INCHES, 639.76 CFS -HRS, 52.87 ACRE-FEET; BASEFLOW .00 CFS
ERATION RUNOFF CROSS SECTION 12
OUTPUT HYDROGRAPH= 2
AREA= .10 SQ MI INPUT RUNOFF CURVE= 82. T IME OF CONCENTRATION= .25 HOURS
INTERNAL HYDROGRAPH TIME INCREMENT= .0333 HOURS
!i
TR20 XEQ 9/23/99
REV 09/01/83
PEAK TIME(HRS)
12.05
15.16
16.44
17.66
19.65
TIME(HRS) FIRST HYDROGRAPH POINT =
6.40 DISCHG .02 .05
7.20 DISCHG .47 .51
8.00 DISCHG .90 .96
8.80 DISCHG 1.92 2.00
9.60 DISCHG 3.07 3.29
10.40 DISCHG 5.15 5
59
11.20 DISCHG 12.15 .
12.98
12.00 DISCHG 225.96 237.16
12.80 DISCHG 27.00 25.05
13.60 DISCHG 14.90 13.98
14.40 DISCHG 10.13 9.73
15.20 DISCHG 8.22 8.20
16.00 DISCHG 7.07 7.08
16.80 DISCHG 6.10 6.00
17.60 DISCHG 5.94 5.94
18.40 DISCHG 4.77 4.77
19.20 DISCHG 4.78 4.78
20.00 DISCHG 3.89 3.73
20.80 DISCHG 3.60 3.60
21.60 DISCHG 3.60 3.60
22.40 DISCHG 3.61 3.61
23.20 DISCHG 3.62 3.62
PEAK DISCHARGE(CFS)
241.32
8.22
7.10
5.94
4.78
PEAK ELEVATION(FEET)
(RUNOFF)
(RUNOFF)
(RUNOFF)
(RUNOFF)
(RUNOFF)
.00 HOURS TIME INCREMENT = .08 HOURS DRAINAGE AREA =
.09 .14 .19 .24 .28 .33 .38
.56 .60 .65 .69 .73 .78 .82
1.07 1.18 1.28 1.42 1.57 1.68 1.77
2.07 2.14 2.28 2.47 2.62 2.74 2.83
3.48 3.62 3.74 3.84 3.98 4.23 4.47
5.99 6.65 7.38 7.95 8.73 9.60 10.28
14.15 15.75 17.56 27.32 49.30 69.34 101.72
177.37 110.84 75.91 55.26 42.91 36.40 31.98
22.91 21.56 20.27 18.84 17.94 17.13 16.18
13.31 12.86 12.35 11.96 11.67 11.22 10.83
9.46 9.04 8.62 8.38 8.28 8.24 8.22
7.98 7.59 7.30 7.17 7.11 7.09 7.08
7.08 7.08 7.09 7.09 7.09 7.03 6.71
5.96 5.94 5.93 5.93 5.93 5.93 5.94
5.94 5.78 5.40 5.06 4.90 4.82 4.79
4.77 4.77 4.77 4.77 4.77 4.77 4.77
4.78 4.78 4.78 4.78 4.78 4.78 4.63
3.66 3.62 3.61 3.60 3.60 3.60 3.60
3.60 3.60 3.60 3.60 3.60 3.60 3.60
3.61 3.61 3.61 3.61 3.61 3.61 3.61
3.61 3.61 3.61 3.61 3.61 3.61 3.62
3.62 3.62 3.62 3.62 3.62 3.61 3.46
1 RUNOFF VOLUME ABOVE BASEFLOW = 3.24 WATERSHED INCHES, 209.42 CFS-HRS, 17.31 ACRE-FEET; BASEFLOW = .00 CFS
PERATION ADDHYD CROSS SECTION 13
INPUT HYDROGRAPHS= 1,2 OUTPUT HYDROGRAPH= 3
***ELEVATION OUTPUT OPTION REQUESTED BUT NO ELEVATIONS GIVEN***
PEAK TIME(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET)
12.12 791.76 (NULL)
' IME(HRS) FIRST HYDROGRAPH POINT .00 HOURS TIME INCREMENT = .08 HOURS DRAINAGE AREA = .39 SQ.M
4.00 DISCHG .00 .00 .00 .00 .00 .00 .01 .01 .01 .01
4.80 DISCHG .01 .02 .02 .02 .02 .03 .03 .03 .04 .04
5.60 DISCHG .04 .05 .05 .06 .06 .06 .07 .07 .08 .09
6.40 DISCHG .11 .15 .20 .25 .31 .36 .42 .47 .53 .58
7.20 DISCHG .63 .69 .74 .80 .85 .90 .96 1.01 1.06 1.11
GRANDOVER (WEST) COMMERCIAL- POST-DEV. W/PONDS 10 YR, 09/23/99 20
30

OTR
20 XEQ 9/23/99 GRA4DOVER (WEST) COMMERCIAL- POST-DEV. W/PONDS 10 YR, 09/23/ 99 20 JOB 1
REV 09/01/83 30

8.00 DISCHG 1.16 1.23 1.35 1.48 1.59 1.74 1.89 2.01 2.10 2.19
8.80 DISCHG 2.27 2.35 2.42 2.50 2.65 2.85 3.00 3.13 3.23 3.33
9.60 DISCHG 3.48 3.71 3.91 4.07 4.19 4.30 4.46 4.71 4.96 5.22
10.40 DISCHG 5.66 6.12 6.53 7.21 7.95 8.54 9.33 10.21 10.91 11.78
11.20
12.00 DISCHG
DISCHG 12.82
610.23 13.67
773.69 14.86
767.03 16.48
648.32 21.11
517.55 44.26
416.92 88.84
336.81 146.96
275.77 237.25
230.33 408.24
199.04
12.80 DISCHG 177.70 159.63 143.74 130.67 119.50 109.52 101.23 94.16 88.69 84.28
13.60 DISCHG 80.49 76.50 72.83 69.59 66.49 63.70 61.22 58.74 56.43 54.37
14.40 DISCHG 52.27 50.24 48.42 46.53 44.64 43.00 41.65 40.52 39.59 38.81
15.20 DISCHG 38.17 37.60 36.85 35.84 34.84 34.01 33.32 32.74 32.27 31.87
16.00 DISCHG 31.54 31.27 31.04 30.85 30.69 30.56 30.45 30.27 29.74 28.97
16.80 DISCHG 28.27 27.69 27.22 26.82 26.50 26.23 26.01 25.83 25.68 25.56
17.60 DISCHG 25.45 25.37 25.29 25.02 24.39 23.64 23.01 22.49 22.06 21.70
18.40 DISCHG 21.41 21.17 20.97 20.80 20.67 20.56 20.46 20.39 20.32 20.27
19.20
20.00 DISCHG
DISCHG 20.22
18.52 20.18
17.92 20.15
17.42 20.13
17.00 20.10
16.66 20.09
16.38 20.07
16.16 20.05
15.97 19.83
15.81 19.24
15.68
20.80 DISCHG 15.57 15.49 15.41 15.35 15.30 15.26 15.22 15.19 15.16 15.14
21.60 DISCHG 15.13 15.11 15.10 15.09 15.08 15.07 15.06 15.06 15.05 15.05
22.40 DISCHG 15.05 15.05 15.04 15.04 15.04 15.04 15.04 15.04 15.04 15.04
23.20 DISCHG 15.04 15.04 15.04 15.04 15.04 15.04 15.04 15.04 14.83 14.24
RUNOFF VOLU74E ABOVE BASEFLOW = 3.33 WATERSHED INCHES, 849.18 CFS-HRS, 70.18 ACRE-FEET; BASEFLOW = .00 CFS
OPERATION RESVOR STRUCTURE 15
INPUT HYDROGRAPH= 3 OUTPUT HYDROGRAPH= 4
SURFACE ELEVATION= 770.86
PEAK TIME(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET)
12.23 684.51 773.59
IME MRS) FIRST HYDROGRAPH POINT = .00 HOURS TIME INCREMENT = .08 HOURS DRAINAGE AREA = .39 SQ.M
7.20 DISCHG .00 .00 .00- .00 .00 .01 .01 .01 .01 .01
7.20 ELEV 770.86 770.86 770.86 770.86 770.86 770.88 770.88 770.88 770.89 770.89
8.00 DISCHG .01 .01 .01 .01 .01 .01 .01 .02 .02 .02
8.00 ELEV 770.89 770.89 770.90 770.90 770.90 770.91 770.91 770.91 770.92 770.92
8.80 DISCHG .02 .02 .02 .02 .03 .03 .03 .03 .03 .03
8.80 ELEV 770.93 770.93 770.94 770.94 770.95 770.96 770.96 770.97 770.98 770.98
9.60 DISCHG .04 .04 .85 1.79 2.49 3.01 3.42 3.76 4.08 4.38
9.60 ELEV 770.99 771.00 771.01 771.01 771.02 771.02 771.02 771.02 771.02 771.03
10.40 DISCHG 4.70 5.05 5.43 5.86 6.37 6.93 7.53 8.20 8.90 9.63
10.40 ELEV 771.03 771.03 771.03 771.04 771.04 771.04 771.05 771.05 771.05 771.06
11.20 DISCHG 10.43 11.27 12.16 13.21 14.87 20.18 34.00 59.00 98.66 167.44
11.20 ELEV 771.06 771.07 771.07 771.08 771.09 771.12 771.21 771.36 771.61 772.02
12.00 DISCHG 328.49 507.20 653.39 683.55 627.65 538.53 450.16 382.37 321.43 271.13
12.00 ELEV 772.56 773.13 773.51 773.59 773.44 773.21 772.97 772.74 772.54 772.37
12.80 DISCHG 232.13 202.23 178.41 160.10 149.67 139.19 129.11 119.75 111.31 103.91
12.80 ELEV 772.24 772.14 772.06 771.99 771.92 771.86 771.80 771.74 771.69 771.64
13.60 DISCHG 97.50 91.84 86.72 82.10 77.91 74.09 70.62 67.45 64.51 61.80
13.60 ELEV 771.60 771.57 771.54 771.51 771.48 771.46 771.44 771.42 771.40 771.38

2
TR
0 XEQ 9/23/99 GRANDOVER (WEST) COMMERCIAL- POST-DEV. W/PONDS 10 YR, 09/23/99 20 JOB 1
REV 09/01/83 30

14.40 DISCHG 59.27 56.88 54.63 52.50 50.44 48.46 46.63 44.98 43.51 42.23
14.40 ELEV 771.37 771.35 771.34 771.32 771.31 771.30 771.29 771.28 771.27 771.26
15.20 DISCHG 41.11 40.15 39.28 38.41 37.49 36.58 35.71 34.91 34.19 33.56
15.20 ELEV 771.25 771.25 771.24 771.24 771.23 771.23 771.22 771.22 771.21 771.21
16.00 DISCHG 33.01 32.53 32.12 31.77 31.47 31.22 31.01 30.81 30.57 30.21
16.00 ELEV 771.20 771.20 771.20 771.20 771.19 771.19 771.19 771.19 771.19 771.19
16.80 DISCHG 29.74 29.21 28.69 28.19 27.74 27.33 26.97 26.66 26.39 26.16
16.80 ELEV 771.18 771.18 771.18 771.17 771.17 771.17 771.17 771.16 771.16 771
16
17.60 DISCHG 25.96 25.80 25.66 25.51 25.27 24.90 24.43 23.93 23.43 .
22.97
17.60 ELEV 771.16 771.16 771.16 771.16 771.16 771.15 771.15 771.15 771.14 771.14
18.40 DISCHG 22.55 22.17 21.84 21.56 21.31 21.10 20.93 20.78 20.65 20.54
18.40 ELEV 771.14 771.14 771.13 771.13 771.13 771.13 771.13 771.13 771.13 771.13
19.20 DISCHG 20.46 20.38 20.32 20.26 20.22 20.18 20.15 20.12 20.07 19.91
19.20 ELEV 771.13 771.13 771.13 771.12 771.12 771.12 771.12 771.12 771.12 771.12
20.00
20.00 DISCHG
ELEV 19.60
771.12 19.19
771.12 18.74
771.12 18.28
771.11 17.85
771.11 17.45
771.11 17.10
771.11 16.79
771.10 16.52
771.10 16.29
771.10
20.80 DISCHG 16.09 15.93 15.78 15.66 15.56 15.48 15.41 15.35 15.30 15.25
20.80 ELEV 771.10 771.10 771.10 771.10 771.10 771.10 771.09 771.09 771.09 771.09
21.60 DISCHG 15.22 15.19 15.16 15.14 15.12 15.11 15.10 15.09 15.08 15.07
21.60 ELEV 771.09 771.09 771.09 771.09 771.09 771.09 771.09 771.09 771.09 771.09
22.40 DISCHG 15.06 15.06 15.05 15.05 15.05 15.05 15.04 15.04 15.04 15.04
22.40 ELEV 771.09 771.09 771.09 771.09 771.09 771.09 771.09 771.09 771.09 771.09
23.20 DISCHG 15.04 15.04 15.04 15.04 15.04 15.04 15.04 15.04 15.01 14.87
23.20 ELEV 771.09 771.09 771.09 771.09 771.09 771.09 771.09 771.09 771.09 771.09
RUNOFF VOLUME ABOVE BASEFLOW 3.29 WAT ERSHED INCHES, 839.73 CFS- HRS, 69 .39 ACRE-FEET; BASEFLOW = .00 CFS
PERATION REACH CROSS SECTION 15
INPUT HYDROGRAPH= 4 OUTPUT HYDROGRAPH= 5
LENGTH = 1200.00 FEET IN PUT = COEFFICIENTS RELATED TO CROSS SECTIONAL AREA, X= .85 , M= 1 .38
1 MODIFIED ATT-KIN ROUTING COEFFICIENT = .94 PEAK TRAVEL TIME _ .08 HOURS
*** WARNING REACH 15 ATT-KIN COEFF.(C) GREATER THAN 0.667, CONSIDER REDUCING MAIN TIME INCREMENT ***
PEAK TIME(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET)
12.31 681.46 (NULL)
IME(HRS) FIRST HYDROGRAPH POINT = .00 HOURS TIME INCREMENT = .08 HOURS DRAINAGE AREA = .39 SQ.M
7.20 DISCHG .00 .00 .00 .00 .00 .00 .00 .00 .01 .01
8.00 DISCHG .01 .01 .01 .01 .01 .01 .01 .01 .01 .02
8.80 DISCHG .02 .02 .02 .02 .02 .03 .03 .03 .03 .03
9.60 DISCHG .03 .04 .04 .81 1.73 2.44 2.98 3.39 3.74 4.06
10.40 DISCHG 4.36 4.68 5.03 5.41 5.83 6.34 6.90 7.49 8.15 8.86
11.20 DISCHG 9.59 10.38 11.21 12.10 13.14 14.77 19.86 33.16 57.47 96.22
12.00 DISCHG 163.22 318.71 496.03 644.08 681.21 630.82 544.00 455.72 • 386.71 325.30
12.80 DISCHG 274.34 234.63 204.15 179.94 161.27 150.35 139.85 129.75 120.34 111.84
13.60 DISCHG 104.38 97.90 92.19 87.04 82.39 78.17 74.33 70.84 67.65 64.70
14.40 DISCHG 61.97 59.43 57.03 54.77 52.63 50.57 48.59 46.75 45.08 43.61
15.20 DISCHG 42.31 41.19 40.21 39.33 38.46 37.55 36.64 35.76 34.96 34.24
lR.l'
I
2
0 XEQ
TR 9/23/99 GRANDOVER (WEST) COM MERCIAL- POST-DEV. W/PONDS 10 YR , 09/23/99 20 JOB 1
REV 09/01/83 30
N
16.00 DISCHG 33.60 33.04 32.56 32.15 31.79 31.49 31.24 31.02 30.83 30.59
16.80 DISCHG 30.23 29.76 29.25 28.72 28.22 27.76 27.35 26.99 26.68 26.41
17.60 DISCHG 26.17 25.98 25.81 25.67 25.52 25.28 24.92 24.46 23.96 23.47
18.40 DISCHG 23.00 22.58 22.20 21.86 21.58 21.33 21.12 20.94 20.79 20.66
19.20
20.00 DISCHG
DISCHG 20.55
19.92 20.46
19.62 20.38
19.22 20.32
18.76 20.27
18.31 20.22
17.88 20.18
17.48 20.15
17.12 20.13
16.81 20.07
16.54
20.80 DISCHG 16.31 16.11 15.94 15.79 15.67 15.57 15.48 15.41 15.35 15.30
21.60 DISCHG 15.26 15.22 15.19 15.16 15.14 15.13 15.11 15.10 15.09 15.08
22.40 DISCHG 15.07 15.06 15.06 15.05 15.05 15.05 15.05 15.04 15.04 15.04
23.20 DISCHG 15.04 15.04 15.04 15.04 15.04 15.04 15.04 15.04 15.04 15.01
RUNOFF VOLUME ABOVE BASEFLOW 3.29 WATERSHED INCHES, 839.36 CFS -HRS, 69.37 ACRE-FEET; BASEFLOW = .00 CFS
0
OPERATION RUNOFF CROSS SECTION 16
OUTPUT HYDROGRAPH= 6
AREA= .14 SQ MI INPUT RUNOFF CURVE= 83. TIME OF CONCENTRATION= .17 HOURS
INTERNAL HYDROGRAPH TIME INCREMENT= .0227 HOURS
I
TIME(HRS)
5.60
6.40
7.20
8.00
8.80
9.60
10.40
11.20
12.00
12.80
13.60
14.40
15.20
16.00
16.80
17.60
18.40
19.20
20.00
20.80
21.60
22.40
PEAK TIME(HRS) PEAK DISCHARGE(CFS)
12.00 380.91
15.17 11.67
16.44 10.09
17.66 8.42
19.65 6,'78
23.64 5.13
FIRST HYDROGRAPH POINT =
DISCHG .00 .00
DISCHG .30 .38
DISCHG .99 1.05
DISCHG 1.60 1.74
DISCHG 3.19 3.29
DISCHG 5.00 5.38
DISCHG 8.43 8.97
DISCHG 19.24 20.17
DISCHG 380.81 328.41
DISCHG 36.86 32.98
DISCHG 20.24 18.84
DISCHG 13.84 13.44
DISCHG 11.66 11.61
DISCHG 10.04 10.04
DISCHG 8.46 8.42
DISCHG 8.42 8.42
DISCHG 6.75 6.76
DISCHG 6.77 6.77
DISCHG 5.22 5.13
DISCHG 5.10 5.10
DISCHG 5.10 5.11
DISCHG 5.11 5.11
.00 HOURS
.00 .00
.45 .52
1.12 1.18
1.97 2.11
3.39- 3.51
5.60 5.76
9.58 10.99
22.71 25.21
171.19 101.30
30.46 29.41
18.33 17.71
13.11 12.29
10.96 10.32
10.05 10.05
8.41 8.40
8.41 7.93
6.76 6.76
6.77 6.77
5.10 5.09
5.10 5.10
5.11 5.11
5.11 5.11
PEAK ELEVATION(FEET)
(RUNOFF)
(RUNOFF)
(RUNOFF)
(RUNOFF)
(RUNOFF)
(RUNOFF)
TIME INCR EMENT = .08 HOURS
.00 .00 .03
.59 .66 .72
1.24 1.30 1.36
2.28 2.56 2.75
3.84 4.13 4.30
5.90 6.03 6.33
11.92 12.63 14.19
28.01 58.62 98.61
75.37 56.28 48.25
27.09 25.35 24.70
16.94 16.64 16.18
11.83 11.69 11.66
10.11 10.05 10.03
10.05 10.06 10.06
8.41 8.41 8.41
7.17 6.88 6.79
6.76 6.76 6.76
6.78 6.78 6.78
5.09 5.09 5.09
5.10 5.10 5.10
5.11 5.11 5.11
5.12 5.12 5.12
DRAINAGE AREA =
.09 .16
.79 .86
1.42 1.48
2.88 2.99
4.43 4.55
6.79 7.08
15.36 16.13
119.61 197.85
44.85 40.52
23.26 21.96
15.38 15.05
11.65 11.65
10.03 10.03
9.85 9.05
8.41 8.42
6.76 6.75
6.77 6.77
6.77 6.28
5.09 5.09
5.10 5.10
5.11 5.11
5.12 5.12
14 SQ.M
.23
.92
1.54
3.09
4.67
7.53
17.81
319.24
38.24
21.49
14.66
11.66
10.03
8.60
8.42
6.75
6.77
5.52
5.10
5.10
5.11
5.12
TR20 XEQ 9/23/99 GRANDOVER (WEST) COMMERCIAL- POST-DEV. W/PONDS 10 YR, 09/23/99
REV 09/01/83
23.20 DISCHG 5.12 5.12 5.12 5.12 5.12
RUNOFF VOLUME ABOVE BASEFLOW = 3.35 WATERSHED INCHES, 302.73 CFS-HRS,
OPERATION ADDHYD CROSS SECTION 17
INPUT HYDROGRAPHS= 5,6 OUTPUT HYDROGRAPH= 7
***ELEVATION OUTPUT OPTION REQUESTED BUT NO ELEVATIONS GIVEN***
20 JOB 1
30
5.12 5.12 5.11 4.62 3.85
25.02 ACRE-FEET; BASEFLOW = .00 CFS
PEAK TIME(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET)
12.29 761.84 (NULL)
23.64 20.17 (NULL)
TIME(HRS) FIRST HYDROGRAPH POINT .00 HOURS TIME INCREMENT = .08 HOURS
5.60
6.40 DISCHG
DISCHG 00
.30 .00
.38 .00
.45 .00
.52 .00
.59 .00
.66 .03
.72
7.20 DISCHG .99 1.05 1.12 1.18 1.24 1.30 1.37
8.00 DISCHG 1.61 1.74 1.98 2.12 2.29 2.57 2.76
8.80 DISCHG 3.21 3.31 3.41 3.53 3.86 4.15 4.33
9.60 DISCHG 5.03 5.42 5.64 6.57 7.63 8.48 9.30
10.40 DISCHG 12.80 13.65 14.61 16.40 17.75 18.97 21.09
11.20 DISCHG 28.82 30.55 33.92 37.32 41.15 73.39 118.47
12.00 DISCHG 544.04 647.12 667.22 745.37 756.58 687.10 592.24
12.80 DISCHG 311.20 267.61 234.61 209.35 188.36 175.70 164.55
13.60 DISCHG 124.62 116.75 110.53 104.76 99.33 94.82 90
51
14.40 DISCHG 75.80 72.87 70.14 67.06 64.47 62.26 .
60.25
15.20 DISCHG 53.97 52.80 51.17 49.66 48.57 47.60 46.67
16.00 DISCHG 43.64 43.09 42.61 42.20 41.85 41.55 41.30
16.80 DISCHG 38.69 38.18 37.65 37.13 36.63 36.17 35.76
17.60 DISCHG 34.59 34.40 34.22 33.60 32.69 32.16 31.71
18.40 DISCHG 29.75 29.33 28.95 28.62 28.34 28.09 27.88
19.20 DISCHG 27.32 27.23 27.16 27.09 27.04 27.00 26.96
20.00 DISCHG 25.14 24.75 24.32- 23.86 23.40 22.97 22.57
20.80 DISCHG 21.40 21.20 21.03 20.89 20.77 20.67 20.58
21.60 DISCHG 20.36 20.33 20.30 20.27 20.25 20.23 20.22
22.40 DISCHG 20.18 20.18 20.17 20.17 20.17 20.16 20.16
23.20 DISCHG 20.16 20.16 20.16 20.16 20.16 20.16 20.17
I RUNOFF VOLUME ABOVE BASEFLOW = 3.31 WATERSHED INCHES, 1142.10 CFS-HRS,
ERATION RESVOR STRUCTURE 18
INPUT HYDROGRAPH= 7 OUTPUT HYDROGRAPH= 1
SURFACE ELEVATION= 753.50
DRAINAGE AREA =
.09 .16
.79 .86
1.43 1.49
2.89 3.01
4.46 4.58
10.18 10.82
22.85 24.29
152.77 255.32
500.57 427.23
153.01 142.31
86.23 82.70
58.40 56.74
45.79 44.99
40.87 39.87
35.41 35.09
31.22 30.71
27.70 27.55
26.92 26.40
22.22 21.91
20.51 20.45
20.21 20.20
20.16 20.16
20.15 19.66
,53 SQ.M
.23
.92
1.55
3.11
4.71
11.60
26.67
415.46
363.54
133.33
79.35
55.26
44.27
39.18
34.82
30.22
27.43
25.59
21.63
20.40
20.19
20.16
18.86
94.38 ACRE-FEET; BASEFLOW = .00 CFS
PEAK TIME(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET)
12.47 607.44 759.00
ME(HRS) FIRST HYDROGRAPH POINT = .00 HOURS TIME INCREMENT = .08 HOURS DRAINAGE AREA = .53 SQ.M
e
1
U
TR20 XEQ 9/23/99 GRANDOVER (WEST) COMMERCIAL- POST-DEV. W/PONDS 10 YR, 09/23 /99 20 JOB 1

11 REV 09/01/83 30
6.40 DISCHG .01 .01 .01 .01 .02 .02 .03 .04 .04 .05
6.40 ELEV 753.50 753.50 753.51 753.51 753.51 753.51 753.52 753.52 753.52 753.53
7.20 DISCHG .06 .06 .07 .08 .09 .10 .11 .12 .13 .14
7.20 ELEV 753.53 753.53 753.54 753.54 753.55 753.55 753.56 753.56 753.57 753.57
8.00 DISCHG .15 .16 .18 .19 .21 .23 .25 .27 .29 .31
8.00 ELEV 753.58 753.59 753.59 753.60 753.61 753.62 753.63 753.64 753.65 753.66
8.80 DISCHG .33 .36 .38 .41 .43 .46 .49 .52 .55 .59
8.80 ELEV 753.68 753.69 753.70 753.71 753.73 753.74 753.76 753.78 753.79 753.81
9.60 DISCHG 62 .66 .70 .74 .79 .85 .92 1.00 1.10 1.21
9.60 ELEV 753.83 753.85 753.87 753.89 753.92 753.95 753.98 754.01 754.04 754.08
10.40 DISCHG 1.33 1.47 1.60 1.76 1.93 2.11 2.30 2.52 2.72 2.88
10.40 ELEV 754.11 754.15 754.19 754.23 754.28 754.34 754.39 754.46 754.52 754.60
11.20 DISCHG 3.06 3.25 3.45 3.68 6.73 13.12 23.60 42.48 77.45 134.61
11.20 ELEV 754.68 754.76 754.86 754.96 755.05 755.17 755.36 755.62 755.97 756.43
12.00
12.00 DISCHG
ELEV 222.05
757.02 314.02
757.56 404.77
758.04 479.78
758.41 550.32
758.73 595.72
758.94 607.35
759.00 591.22
758.92 557.52
758.77 514.61
758.57
12.80 DISCHG 469.59 424.76 380.48 338.32 301.42 272.30 247.38 225.77 206.02 188.40
12.80 ELEV 758.36 758.14 757.91 757.69 757.49 757.32 757.17 757.04 756.92 756.80
13.60 DISCHG 173.06 159.53 147.68 138.24 130.21 122.86 116.16 109.99 104.32 99.15
13.60 ELEV 756.70 756.61 756.53 756.46 756.39 756.34 756.28 756.23 756.19 756.15
14.40 DISCHG 94.37 89.92 85.84 82.01 78.45 75.19 72.17 69.39 66.83 64.49
14.40 ELEV 756.11 756.08 756.04 756.01 755.98 755.95 755.92 755.89 755.86 755.84
15.20 DISCHG 62.35 60.41 58.59 56.82 55.15 53.62 52.22 50.92 49.72 48.62
15.20 ELEV 755.82 755.80 755.78 755.76 755.74 755.73 755.71 755.70 755.69 755.68
16.00 DISCHG 47.61 46.69 45.86 45.11 44.44 43.85 43.32 42.84 42
31 41
70
16.00 ELEV 755.67 755.66 755.65 755.64 755.64 755.63 755.62 755.62 .
755.61 .
755.61
16.80 DISCHG 41.11 40.53 39.96 39.41 38.86 38.33 37.82 37.33 36.88 36.47
16.80 ELEV 755.60 755.60 755.59 755.58 755.58 755.57 755.57 755.56 755.56 755.55
17.60 DISCHG 36.09 35.74 35.43 35.10 34.68 34.19 33.70 33.22 32.73 32.24
17.60 ELEV 755.55 755.55 755.54 755.54 755.54 755.53 755.53 755.52 755.52 755.51
18.40 DISCHG 31.75 31.27 30.95 30.68 30.40 30.12 29.85 29.59 29.34 29.11
18.40
19.20 ELEV
DISCHG 755.51
28.89 755.50
28.69 755.50
28.50- 755.49
28.32 755.49
28.16 755.48
28.02 755.48
27.89 755.47
27.77 755.47
27.63 755.46
27.42
19.20 ELEV 755.46 755.46 755.45 755.45 755.45 755.44 755.44 755.44 755.44 755.43
20.00 DISCHG 27.16 26.88 26.58 26.27 25.93 25.59 25.23 24.87 24.52 24.17
20.00 ELEV 755.43 755.42 755.42 755.41 755.40 755.40 755.39 755.39 755.38 755.37
20.80 DISCHG 23.83 23.51 23.21 22.93 22.66 22.42 22.19 21.98 21.79 21.62
20.80 ELEV 755.37 755.36 755.36 755.35 755.35 755.34 755.34 755.33 755.33 755.33
21.60 DISCHG 21.46 21.32 21.19 21.08 20.97 20.88 20.80 20.73 20.66 20.60
21.60 ELEV 755.32 755.32 755.32 755.32 755.31 755.31 755.31 755.31 755.31 755.31
22.40 DISCHG 20.55 20.50 20.46 20.42 20.39 20.36 20.34 20.32 20.30 20.28
22.40
23.20 ELEV
DISCHG 755.31
20.26 755.31
20.25 755.30
20.24 755.30
20.23 755.30
20.22 755.30
20.21 755.30
20.21 755.30
20.20 755.30
20.16 755.30
20.05
23.20 ELEV 755.30 755.30 755.30 755.30 755.30 755.30 755.30 755.30 755.30 755.30
RUNOFF V OLUME ABOVE BASEFLOW 3.18 WATERSHED INCHES, 1097.04 CFS-HRS, 90.66 ACRE-FEET; BASEF LOW = .00 CFS
{ ECUTIVE CONTROL OPERATION ENDCMP COMPUTATIONS COMPLETED FOR PASS 1 RECORD
ITR20 XEQ 9/23/99 GRANDOVER (WEST) COMMERCIAL- POST-DEV. W/PONDS 10 YR, 09/23/99
REV 09/01/83
NEXECUTIVE CONTROL OPERATION ENDJOB
I
20 JOB 1
30
RECORD

TR20 XEQ 9/23/99 GRANDOVER (WES T) COMMERCIAL- POST-DEV. W/PONDS 10 YR, 09/23/99 20 JOB 1
REV 09/01/83 30
SUMMARY TABLE 1 - SELECTED RESU LTS OF STANDARD AND EXECUTIVE CONTROL INSTRUCTIONS IN THE ORDER PERFORMED
(A STAR(*) AFTER THE PEAK DISCHARGE TIME AND RATE (C FS) VALUES INDICATES A FLAT TOP HYDROGRAPH
A QUESTION MARK(?) INDICATES A HYDROGRAPH WITH PEAK AS LAST POINT.)
ISECTION/ STANDARD RAIN ANTEC MAIN PRECIPITATION PEAK DISCHARGE
STRUCTURE CONTROL DRAINAGE TABLE MOIST TIME ------------------------- RUNOFF ------- ----------- -----------
ID
0 OPERATION AREA
(SQ MI) # COND INCREM
(HR) BEGIN
(HR) AMOUNT
(IN) DURATION AMOUNT
(HR) (IN) ELEVATION TIME
(FT) (HR) RATE
(CPS)
ALTERN ATE 1 S TORM 1
9SECTION 1 RUNOFF .24 2 2 .08 .0 5.20 24.00 4.05 --- 12.05 693.30
STRUCTURE 16 RESVOR .24 2 2 .08 .0 5.20 24.00 3.46 800.59 12.15 538.18
SECTION 3 REACH .24 2 2 .08 .0 5.20 24.00 3.46 --- 12.15 538.18
SECTION
F 4 RUNOFF .03 2 2 .08 .0 5.20 24.00 4.06 --- 12.04 73.24
TRUCTURE 17 RESVOR .03 2 2 .08 .0 5.20 24.00 3.37 817.20 12.14 56.73
SECTION 6 REACH .03 2 2 .08 .0 5.20 24.00 3.37 --- 12.14 56.73
SECTION 7 RUNOFF .03 2 2 .08 .0 5.20 24.00 3.55 --- 12.00 85.66
XSECTION 8 ADDHYD .05 2 2 .08 .0 5.20 24.00 3.47 --- 12.04 130.17
TRUCTURE 1 RESVOR .05 2 2 .08 .0 5.20 24.00 2.92 800.68 12.30 59.77
SECTION 10 REACH .05 2 2 .08 .0 5.20 24.00 2.92 --- 12.30 59.77
SECTION 11 ADDHYD .29 2 2 .08 .0 5.20 24.00 3.36 --- 12.16 589.66
SECTION 12 RUNOFF .10 2 2 .08 .0 5.20 24.00 3.24 --- 12.05 241.32
SECTION 13 ADDHYD .39 2 2 .08 .0 5.20 24.00 3.33 --- 12.12 791.76
STRUCTURE 15 RESVOR .39 2 2 .08 .0 5.20 24.00 3.29 773.59 12.23 684.51
SECTION 15 REACH .39 2 2 .08 .0 5.20 24.00 3.29 --- 12.31 681.46
XSECTION 16 RUNOFF .14 2 2 .08 .0 5.20 24.00 3.35 --- 12.00 380.91
SECTION 17 ADDHYD .53 2 2 .08 .0 5.20 24.00 3.31 --- 12.29 761.84
TRUCTURE 18 RESVOR .53 2 2 .08 .0 5.20 24.00 3.18 759.00 12.47 607.44

TR20 XEQ 9/23/99 GRANDOVER (WEST) COMMERCIAL- POST-DEV. W/PONDS 10 YR, 09/23/99 20 JOB 1
REV 09/01/83 30
SUMMARY TABLE 2 - SELECTED MODIFIED ATT-KIN REACH ROUTINGS IN ORDER OF STANDARD EXECUTIVE CONTROL INSTRUCTIONS
(A STAR(*) AFTER VOLUME ABOVE BASE (IN) INDICATES A HYDROGRAPH TRUNCATED AT A VALUE EXCEEDING BASE + 10
A QUESTION MARK(?) AFTER COEFF.(C) INDICATES PARAMETERS OUTSIDE ACCEPTABLE LIMITS, SEE PREVIOUS WARNI
HYDROGRAPH INFORMATION ROUTING PARAMETERS
OUTFLOW+ VOLUME MAIN ITER- Q AND A PEAK S/Q ATT-
XSEC REACH INFLOW OUTFLOW INTERV.AREA BASE- ABOVE TIME ATION EQUATION LENGTH RATIO @PEAK KIN
ID LENGTH PEAK TIME PEAK TIME PEAK TIME FLOW BASE INCR # COEFF POWER FACTOR 0/I (K) COEFF
(FT) (CFS) (HR) (CFS) (HR) (CFS) (HR) (CFS) (IN) (HR) (X) (M) (K*) (Q*) (SEC) (C)
ALTERNATE 1 STORM 1
3 1350 538 12.2 538 12.2 --- --- 0 3.46 .08 0 1.60 1.45 .009 1.000 96 1.00?
6 800 56 12.2 56 12.2 --- --- 0 3.37 .08 0 1.60 1.44 .013 1.000 117 1.00?
10 800 60 12.3 60 12.3 --- --- 0 2.92 .08 0 1.60 1.44 .005 1.000 115 1.00?
15 1200 684 12.2 681 12.3 --- --- 0 3.29 .08 1 .850 1.38 .016 .997 162 .94?
ITR20 XEQ 9/23/99 GRANDOVER (WEST) COMMERCIAL- POST-DEV. W/PONDS 10 YR, 09/23/99 20 JOB 1
REV 09/01/83 30
SUMMARY TABLE 3 - DISCHARGE (CFS) AT XSECTIONS AND STRUCTURES FOR ALL STORMS AND ALTERNATES
XSECTION/ DRAINAGE
,STRUCTURE AREA STORM NUMBERS..........
ID (SQ MI) 1
STRUCTURE 18 .53
ALTERNATE 1 607.44
STRUCTURE 17 .03
ALTERNATE 1 56.73
STRUCTURE 16 .24
ALTERNATE 1 538.18
STRUCTURE 15 .39
ALTERNATE 1 684.51
STRUCTURE 1 .05
ALTERNATE 1 59.77
XSECTION 1 .24
ALTERNATE 1 693.30
lXSECTION 3 .24
ALTERNATE 1 538.18
®XSECTION 4 .03
60
ALTERNATE 1 73.24
®XSECTION 6 .03 -
ALTERNATE 1 56.73
SECTION 7 .03
ALTERNATE 1 85.66
SECTION 8 .05
I ALTERNATE 1 130.17
XSECTION 10 OS
ALTERNATE 1 59.77
XSECTION 11 .29
ALTERNATE 1 589.66
XSECTION 12 .10
ALTERNATE 1 241.32
TR20 XEQ 9/23/99 GRANDOVER (WEST) COMMERCIAL- POST-DEV. W/PONDS 10 YR, 09/23/99 20 JOB 1
REV 09/01/83 30
SUMMARY TABLE 3 - DISCHARGE (CFS) AT XSECTIONS AND STRUCTURES FOR ALL STORMS AND ALTERNATES
XSECTION/ DRAINAGE
,STRUCTURE AREA STORM NUMBERS..........
ID (SQ MI) 1
® XSECTION 13 .39
ALTERNATE 1 791.76
XSECTION 15 .39
ALTERNATE 1 681.46
XSECTION 16 .14
ALTERNATE 1 380.91
XSECTION 17 .53
ALTERNATE 1 761.84
END OF 1 JOBS IN THIS RUN
Stop - Program terminated.
7

C

r
zt
L

1
I
r
C
E
v
r

0
L
50 YEAR STORM
H
*++++++++++++++++++++++++++++++++++++++++++++,r++++++++++*+++++++++++++++++++++++
* * TR 20 SIN
* * HMVersion 3.40
* TR 20 * Date 9/23/99
* * Time 9:42:05
* Project Formulation Hydrology * Input file GDVR5011.t20
*
* * Output file
* GDVR50B.out
*

xxxXXx
x X xx
x xxxx
x xxx
x xx
x xxxxx
x xx
x x x x x x x
x xxx xxx x x x x
x x x x x x x
x x x x xx x
x x x xxxxx xx XXXXX

Full Microcomputer Implementation
by
Haestad Methods, Inc.
37 Brookside Road * Waterbury, Connecticut 06708 * [phone]
C

******************80-80 LIST OF INPUT DATA FOR TR-20 HYDROLOGY******************
JOB TR-20 FULLPRINT 10
TITLE 001 GRANDOVER (WEST) COMMERCIAL- POST-DEV. W/PONDS 50 YR, 09/23/99 20
TITLE
30
3 STRUCT 15 40
8 770.86 0.00 0.00 50
8 771.00 0.04 0.419 60
8 772.00 162.00 3.477 70
8 773.00 458.21 6.654 80
8 774.00 841.78 9.951 90
8 775.00 1296.00 13.370 100
8 775.65 1735.68 16.891 110
8 120
9 ENDTBL 140
3 STRUCT 16 150
8 795.5 0.00 0.00 170
8 796.0 0.30 1.440 171
8 797.1 0.53 4.699 172
8 797.5 0.59 5.917 173
8 797.9 0.65 7.151 174
8 798.0 4.45 7.462 175
8 798.5 56.50 9.035 176
8 799.0 139.23 10.635 177
8 800.0 366.07 13.916 178
8 801.0 655.96 17.308 179
8 802.0 997.28 20.812 180
8 181
8 182
9 ENDTBL
y 251
3 STRUCT 17 252
8 814.0 0.00 0.00 253
8 815.0 0.24 0.505 254
8 815.7 0.31 0.884 255
8 816.0 5.26 1.053 256
8 816.5 21.84 1.343 257
e 817.0 44.88 1.645 258
8 818.0 105.11 2.284 259
8 819.0 180.37 2.970 260
8 820.0 368.08 3.705 261
9 ENDTBL 262
3 STRUCT 18 270
8 753.50 0.00 0.00 271
8 754.00 0.95 0.78 272
8 754.50 2.67 1.81 273
8 755.00 3.77 2.83 274
8 755.50 31.14 4.17 275
8 756.00 80.33 S.51 276
**********************80-80 LIST OF INPUT DATA (CONTINUED)**********************
8 756.50 143.75 7.19 277
8 757.00 218.66 8.86 278
8 757.50 303.52 10.88 279
8 758.00 397.25 12.90 280
8 758.50 499.09 15.27 281
8 759.00 608.43 17.64 282
9 ENDTBL 283
3 STRUCT 01 290
8 798.50 0.00 0.00 291
8 799.00 0.10 0.70 292
8 799.50 0.68 1.54 293
8 800.00 16.87 2.38 294
8 800.50 46.18 3.39 295
8 801.00 84.03 4.39 296
8 801.50 128.80 5.53 297
8 802.00 179.55 6.67 298
8 802.50 235.63 8.01 299
8 803.00 402.66 9.34 300
8 803.50 662.04 10.93 301
8 804.00 982.86 12.51 302
9 ENDTBL 303
6 RUNOFF 1 001 1 0.24 90.00 0.251 1 1 1 360
6 RESVOR 2 16 1 2 795.5 1 1 1 1 1 370
6 REACH 3 003 2 3 1350.00 1.6 1.451 1 1 1 380
6 RUNOFF 1 004 4 0.025 90.00 0.231 1 1 1 390
6 RESVOR 2 17 4 5 814.00 1 1 1 1 1 391
6 REACH 3 006 5 6 800.00 1.6 1.441 1 1 1 392
6 RUNOFF 1 007 7 0.03 85.0 0.171 1 1 1 393
6 ADDHYD 4 008 7 6 5 1 1 1 1 1 394
6 RESVOR 2 01 5 4 798.50 1 1 1 1 1 395
6 REACH 3 010 4 6 800.0 1.6 1.441 1 1 1 396
6 ADDHYD 4 011 6 3 1 1 1 1 1 1 397
6 RUNOFF 1 012 2 0.10 82.0 0.251 1 1 1 398
6 ADDHYD 4 013 1 2 3 1 1 1 1 1 399
6 RESVOR 2 15 3 4 770.86 1 1 1 1 1 400
6 REACH 3 015 4 5 1200.00 0.85 1.381 1 1 1 401
6 RUNOFF 1
6 ADDHYD 4 016
017
5 6 6
7 0.14 83.00 0.171
1 1
1 1 1
1 1
1 402
403
6 RESVOR 2 18 7 1 753.50 1 1 1 1 1 404
ENDATA 450
7 INCREM 6
1 0.08 460
7 COMPUT 7
- 001 1 8 0.0 6.7 1.02 2 0 1 01 470
ENDCMP 1 480
® ENDJOB 2 490
*******+**.***:**:.****+****+**END OF 80-80 LIST***:***•**•******r*r***w*•**w***

TR20 XEQ 9/23/99 GRANDOVER (WEST) COMMERCIAL- POST-DEV. W/PONDS 50 YR, 09/23/99 20 JOB 1
REV 09/01/83 30
FILE NO. 1

COMPUTER PROGRAM FOR PROJECT FORMULATION - HYDROLOGY USER NOTES
THE USERS MANUAL FOR THIS PROGRAM IS THE MAY 1982 DRAFT OF TR-20. CHANGES FROM THE 2/14/74 VERSION INCLUD
REACH ROUTING - THE MODIFIED ATT-KIN ROUTING PROCEDURE REPLACES THE CONVEX METHOD. INPUT DATA PREPARED FO
PREVIOUS PROGRAM VERSIONS USING CONVEX ROUTING COEFFICIENTS WILL NOT RUN ON THIS VERSION.
THE PREFERRED TYPE OF DATA ENTRY IS CROSS SECTION DATA REPRESENTATIVE OF A REACH. IT IS RECOMMENDED TH
THE OPTIONAL CROSS SECTION DISCHARGE-AREA PLOTS BE OBTAINED WHENEVER NEW CROSS SE CTION DATA IS ENTERED.
THE PLOTS SHOULD BE CHECKED FOR REASONABLENESS AND ADEQUACY OF INPUT DATA FOR THE COMPUTATION OF "M"
VALUES USED IN THE ROUTING PROCEDURE.
GUIDELINES FOR DETERMINING OR ANALYZING REACH LENGTHS AND COEFFICIENTS (X,M) ARE AVAILABLE IN THE USERS
MANUAL. SUMMARY TABLE 2 DISPLAYS REACH ROUTING RESULTS AND ROUTING PARAMETERS FOR COMPARISON AND CHECK
HYDROGRAPH GENERATION - THE PROCEDURE TO CALCULATE THE INTERNAL TIME INCREMENT AND PEAK TIME OF THE UNIT
HYDROGRAPH HAVE BEEN IMPROVED. PEAK DISCHARGES AND TIMES MAY DIFFER FROM THE PREVIOUS VERSION. OUTPUT
HYDROGRAPHS ARE STILL INTERPOLATED, PRINTED, AND ROUTED AT THE USER SELECTED MAIN TIME INCREMENT.
INTERMEDIATE PEAKS - METHOD ADDED TO PROVIDE DISCHARGES AT INTERMEDIATE POINTS WITHIN REACHES WITHOUT ROUT
OTHER - THIS VERSION CONTAINS SOME ADDITIONS TO THE INPUT AND NUMEROUS MODIFICATIONS TO THE OUTPUT. USER
OPTIONS HAVE BEEN MODIFIED AND AUGMENTED ON THE JOB RECORD, RAINTABLES ADDED, ERROR AND WARNING MESSAGE
EXPANDED, AND THE SUMMARY TABLES COMPLETELY REVISED. THE HOLDOUT OPTION IS NOT OPERATIONAL AT THIS TIM
PROGRAM QUESTIONS OR PROBLEMS SHOULD BE DIRECTED TO HYDRAULIC ENGINEERS AT THE SCS NATIONAL TECHNICAL CENT
CHESTER, PA (NORTHEAST) -- 215-499-3933, FORT WORTH, TX (SOUTH) -- 334-5242 (FTS)
LINCOLN, NB (MIDWEST) -- 541-5318 (FTS), PORTLAND, OR (WEST) -- 423-4099 (FTS)
OR HYDROLOGY UNIT, ENGINEERING-DIVISION, LANHAM, MD -- 436-7383 (FTS).
PROGRAM CHANGES SINCE MAY 1982:
w 12/17/82 - CORRECT PEAK RATE FACTOR FOR USER ENTERED DIMHYD
CORRECT REACH ROUTING PEAK TRAVEL TIME PRINTED WITH FULLPRINT OPTION
5/02/83 - CORRECT COMPUTATIONS FOR ---
1. DIVISION OF BASEFLOW IN DIVERT OPERATION
2. HYDROGRAPH VOLUME SPLIT BETWEEN BASEFLOW AND ABOVE BASEFLOW
3. CROSS SECTION DATA PLOTTING POSITION
4. INTERMEDIATE PEAK WHEN "FROM" AREA IS LARGER THAN "THRU" AREA
5. STORAGE ROUTED REACH TRAVEL TIME FOR MULTIPEAK HYDROGRAPH
6. ORDERING "FLOW-FREQ" FILE FROM SUMMARY TABLE #3 DATA
7. BASEFLOW ENTERED WITH READHYD
8. LOW FLOW SPLIT DURING DIVERT PROCEDURE #2 WHEN SECTION RATINGS START AT DIFFERENT E
ENHANCEMENTS ---
1. REPLACE USER MANUAL ERROR CODES (PAGE 4-9 TO 4-11) WITH MESSAGES
2. LABEL OUTPUT HYDROGRAPH FILES WITH CROSS SECTION/STRUCTURE, ALTERNATE AND STORM NO'
09/01/83 - CORRECT INPUT AND OUTPUT ERRORS FOR INTERMEDIATE PEAKS
CORRECT COMBINATION OF RATING TABLES FOR DIVERT
CHECK REACH ROUTING PARAMETERS FOR ACCEPTABLE LIMITS
ELIMINATE 14INIMUM REACH TRAVEL TIME WHEN ATT-KIN COEFFICIENT EQUALS ONE

1

TR20 XEQ 9/23/99 GRANDOVER (WEST) COMMERCIAL- POST-DEV. W/PONDS 50 YR, 09/23/99
REV 09/01/83
EXECUTIVE CONTROL OPERATION INCREM MAIN TIME INCREMENT = .08 HOURS
20 JOB 1
30
RECORD
1EXECUTIVE CONTROL OPERATION COMPUT FROM XSECTION 1 TO STRUCTURE 18 RECORD
STARTING TIME _ .00 RAIN DEPTH = 6.70 RAIN DURATION= 1.00 RAIN TABLE NO.= 2 ANT. MOIST. COND= 2
ALTERNATE NO.= 1 STORM NO.= 1 MAIN TIME INCREMENT = .08 HOURS
OPERATION RUNOFF CROSS SECTION 1
OUTPUT HYDROGRAPH= 1
AREA= .24 SQ MI INPUT RUNOFF CURVE= 90. TIME OF CONCENTRATION= .25 HOURS
INTERNAL HYDROGRAPH TIME INCREMENT= .0333 HOURS
[IME (HRS)
2.40
3.20
4.00
4.80
5.60
6.40
7.20
8.00
8.80
9.60
10.40
11.20
12.00
12.80
13.60
14.40
15.20
16.00
16.80
17.60
18.40
19.20
20.00
20.80
21.60
22.40
23.20
PEAK TIME(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET)
12.04 925.13 (RUNOFF)
16.44 24.25 (RUNOFF)
17.65 20.22 (RUNOFF)
19.64 16.20 (RUNOFF)
23.64 12.18 (RUNOFF)
FIRST HYDROGRAPH POINT = .00 HOURS TIME INCREMENT = .08 HOURS DRAINAGE AREA = .24 SQ.M
DISCHG .00 .00 .00 .00 .00 .00 .00 .01 .07 .17
DISCHG .29 .42 .55 .68 .81 .94 1.07 1.19 1.38 1.69
DISCHG 2.01 2.27 2.49 2.70 2.90 3.09 3.28 3.46 3.64 3.82
DISCHG 3.99 4.15 4.32 4.48 4.64 4.79 4.95 5.10 5.24 5.38
DISCHG 5.53 5.66 5.80 5.93 6.06 6.19 6.48 7.14 7.80 8.21
DISCHG 8.50 8.73 8.92 9.10 9.27 9.44 9.60 9.75 9.91 10.06
DISCHG 10.20 10.35 10.49 10.62 10.76 10.89 11.02 11.15 11.27 11.39
DISCHG 11.51 11.87 12.75 13.61 14.32 15.36 16.38 17.02 17.41 17.70
DISCHG 17.92 18.12 18.31
- 18.55 19.32 20.43 21.23 21.71 22.03 22.30
DISCHG 22.95 24.14 25.12 25.69 26.06 26.34 26.88 28.05 29.19 30.36
DISCHG 32.60 34.87 36.74 40.14 43.82 46.45 50.09 54.15 57.05 60.71
DISCHG 65.13 68.46 73.32 80.23 87.82 132.47 230.88 313.89 438.22 676.64
DISCHG 885.61 900.48 662.18 409.27 277.03 199.58 153.71 129.48 113.19 101.68
DISCHG 95.01 87.97 80.34 75.49 70.86 65.80 62.55 59.67 56.32 54.00
DISCHG 51.75 48.53 46.15 44.56 42.76 41.39 40.35 38.77 37.42 36.44
DISCHG 34.96 33.57 32.61 31.16 29.68 28.86 28.50 28.33 28.26 28.23
DISCHG 28.22 28.14 27.39 26.03 25.04 24.58 24.37 24.28 24.24 24.22
DISCHG 24.21 24.21 24.22 24.22 24.22 24.22 24.23 24.02 22.90 21.57
DISCHG 20.81 20.48 20.33 20.26 20.23 20.21 20.21 20.21 20.21 20.21
DISCHG 20.21 20.22 20.19 19.67 18.35 17.20 16.65 16.39 16.27 16.22
DISCHG 16.20 16.19 16.18 16.18 16.19 16.19 16.19 16.19 16.19 16.19
DISCHG 16.19 16.19 16.19 16.19 16.20 16.20 16.20 16.17 15.65 14.33
DISCHG 13.17 12.62 12.36 12.25 12.19 12.17 12.16 12.15 12.15 12.16
DISCHG 12.16 12.16 12.16 12.16 12.16 12.16 12.16 12.16 12.16 12.16
DISCHG 12.16 12.16 12.16 12.16 12.16 12.16 12.16 12.16 12.16 12.17
DISCHG 12.17 12.17 12.17 12.17 12.17 12.17 12.17 12.17 12.17 12.17
DISCHG 12.17 12.17 12.17 12.17 12.17 12.17 12.17 12.15 11.63 10.30
TR20 XEQ 9/23/99 GRANDOVER (WEST) COMMERCIAL- POST-DEV. W/PONDS 50 YR, 09/23/99 20 JOB 1
REV 09/01/83 30
RUNOFF VOLUME ABOVE BASEFLOW = 5.51 WATERSHED INCHES, 853.33 CFS-HRS, 70 .52 ACRE- FEET; BASEFLOW = .00 CFS
OPERATION RESVOR STRUCTURE 16
INPUT HYDROGRAPH= 1 OUTPUT HYDROGRAPH= 2
SURFACE ELEVATION= 795.50
PEAK TIME(HRS) PEAK DISCHARGE(CFS) P EAK ELEVATION(FEET)
12.14 743_ 77 801.26
?TIME(HRS) F IRST HYDROGRAPH POINT .00 HOURS TIME INCRE MENT = .08 HOURS DRAINAGE AREA = .24 SQ.M
3.20 DISCHG .00 .00 .00 .00 .00 .00 .01 .01 .01 .01
3.20 ELEV 795.50 795.50 795.50 795.50 795.50 795.50 795.51 795.51 795.52 795.52
4.00 DISCHG .01 .02 .02 .02 .03 .03 .04 .04 .05 .05
4.00 ELEV 795.52 795.53 795.53 795.54 795.55 795.55 795.56 795.57 795.58 795.58
4.80 DISCHG .06 .06 .07 .07 .08 .09 .09 .10 .11 .11
4.80 ELEV 795.59 795.60 795.61 795.62 795.63 795.64 795.65 795.66 795.68 795.69
5.60 DISCHG .12 .13 .14 .14 .15 .16 .17 .18 .19 .20
5.60 ELEV 795.70 795.71 795.73 795.74 795.75 795.77 795.78 795.80 795.81 795.83
6.40 DISCHG .21 .22 .23 .25 .26 .27 .28 .30 .30 .31
6.40 ELEV 795.85 795.87 795.89 795.91 795.93 795.95 795.97 795.99 796.01 796.04
7.20 DISCHG .31 .32 .32 .33 .33 .34 .34 .35 .35 .36
7.20 ELEV 796.06 796.08 796.10 796.13 796.15 796.17 796.20 796.22 796.24 796.27
8.00 DISCHG .36 .37 .37 .38 .38 .39 .40 .41 .41 .42
8.00 ELEV 796.29 796.32 796.34 796.37 796.40 796.44 796.47 796.51 796.54 796.58
8.80 DISCHG .43 .44 .45 .45 .46 .47 .48 .49 .50 .51
8.80 ELEV 796.62 796.66 796.70 796.74 796.78 796.82 796.87 796.92 796.96 797.01
9.60 DISCHG 52 .53 .54 .55 .56 .56 .57 .58 .59 .60
9.60 ELEV 797.06 797.11 797.17 797.22 797.27 797.33 797.39 797.45 797.51 797.57
10.40 DISCHG .61 .62 .63 .64 2.49 7.89 15.85 23.01 29.43 35.24
10.40 ELEV 797.63 797.71 797.78_ 797.86 797.95 798.03 798.11 798.18 798.24 798.30
11.20 DISCHG 40.70 45.84 50.78 55.91 63.83 77.35 107.81 160.42 240.65 358.52
11.20 ELEV 798.35 798.40 798.45 798.49 798.54 798.63 798.81 799.09 799.45 799.97
12.00
12.00 DISCHG
ELEV 543.31
800.61 701.78
801.13 740.53
801.25 642.21
800.95 510.46
800.50 390.55
800.08 307.16
799.74 245.56
799.47 199.34
799.26 165.14
799.11
12.80 DISCHG 140.29 125.81 113.65 103.22 94.45 86.82 80.21 74.63 69.78 65.51
12.80 ELEV 799.00 798.92 798.85 798.78 798.73 798.68 798.64 798.61 798.58 798.55
13.60 DISCHG 61.82 58.41 55.61 53.59 51.63 49.75 47.99 46.33 44.71 43.17
13.60 ELEV 798.53 798.51 798.49 798.47 798.45 798.44 798.42 798.40 798.39 798.37
14.40 DISCHG 41.70 40.23 38.82 37.45 36.07 34.73 33.53 32.52 31.69 31.01
14.40 ELEV 798.36 798.34 798.33 798.32 798.30 798.29 798.28 798.27 798.26 798.26
15.20 DISCHG 30.46 30.01 29.57 29.01 28.32 27.63 27.01 26.48 26.04 25.68
15.20 ELEV 798.25 798.25 798.24 798.24 798.23 798.22 798.22 798.21 798.21 798.20
16.00
16.00 DISCHG
ELEV 25.39
798.20 25.16
798.20 24.98
798.20 24.83
798.20 24.71
798.19 24.61
798.19 24.54
798.19 24.45
798.19 24.26
798.19 23.86
798.19
16.80 DISCHG 23.33 22.80 22.33 21.93 21.59 21.32 21.10 20.93 20.79 20.67
16.80 ELEV 798.18 798.18 798.17 798.17 798.16 798.16 798.16 798.16 798.16 798.16
17.60 DISCHG 20.58 20.51 20.45 20.35 20.08 19.63 19.09 18.59 18.14 17.77
17.60 ELEV 798.15 798.15 798.15 798.15 798.15 798.15 798.14 798.14 798.13 798.13
J

TR20 XEQ 9/23/99 GRANDOVER (WEST) COMM ERCIAL- POST-DEV. W/PONDS 50 YR, 09/23/9 9 20 JOB 1
REV 09/01/83 30
18.40 DISCHG 17.46 17.21 17.01 16.85 16.72 16.61 16.53 16.46 16.41 16
36
18.40 ELEV 798.13 798.12 798.12 798.12 798.12 798.12 798.12 798.12 798.11 .
798.11
19.20 DISCHG 16.33 16.30 16.28 16.26 16.25 16.24 16.23 16.22 16.16 15.93
19.20 ELEV 798.11 798.11 798.11 798.11 798.11 798.11 798.11 798.11 798.11 798.11
20.00 DISCHG 15.50 14.99 14.49 14.06 13.70 13.40 13.16 12.96 12.80 12.67
20.00 ELEV 798.11 798.10 798.10 798.09 798.09 798.09 798.08 798.08 798.08 798.08
20.80 DISCHG 12.57 12.49 12.42 12.37 12.33 12.30 12.27 12.25 12.23 12.22
20.80 ELEV 798.08 798.08 798.08 798.08 798.08 798.08 798.08 798.07 798.07 798.07
21.60 DISCHG 12.20 12.20 12.19 12.18 12.18 12.18 12.17 12.17 12.17 12.17
21.60 ELEV 798.07 798.07 798.07 798.07 798.07 798.07 798.07 798.07 798.07 798.07
22.40 DISCHG 12.17 12.17 12.17 12.17 12.17 12.17 12.17 12.17 12
17 12
17
22.40 ELEV 798.07 798.07 798.07 798.07 798.07 798.07 798.07 798.07 .
798.07 .
798.07
23.20 DISCHG 12.17 12.17 12.17 12.17 12.17 12.17 12.17 12.17 12.11 11.89
23.20 ELEV 798.07 798.07 798.07 798.07 798.07 798.07 798.07 798.07 798.07 798.07
RUNOFF VOLUME ABOVE BASEFLOW 4
90 WATERSHED INCH ES 759
65 CFS
HRS
. , .
- , 62 .78 ACRE-FEE T; BASE FLOW = .00 CFS
PERATION REACH CROSS SECTION 3
INPUT HYDROGRAPH= 2 OUTPUT HYDROGRAPH= 3
LENGTH = 1350.00 FEET INPUT = COEFF ICIENTS RELATED TO CROSS SECTIONAL AREA, X= 1.60, M= 1.45

MODIFIED ATT-KIN ROU TING COEFFI CIENT = 1.00 PEAK TRAVEL TIME _ .00 HOURS
*** WARNING REACH 3 ATT-KIN COEFF.(C) GREATER THAN 0.667, CONSIDER REDUCING MAIN TIME INCREMENT ***
PEAK TIME(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET)
12.14 743.77 (NULL)
IIME(HRS) FIRST HYDROG
RAPH POINT = .00 HOU RS TIME INCR EMENT = .08 HOURS DRAINAGE AREA .24 SQ.M
3.20 DISCHG .00 .00 .00 .00 .00 .00 .01 .01 .01 .01
4.00 DISCHG .01 .02 .02
- .02 .03 .03 .04 .04 .05 .05
4.80 DISCHG .06 .06 .07 .07 .08 .09 .09 .10 .11 .11
5.60 DISCHG .12 .13 .14 .14 .15 .16 .17 .18 .19 .20
6.40 DISCHG .21 .22 .23 .25 .26 .27 .28 .30 .30 .31
7.20 DISCHG .31 .32 .32 .33 .33 .34 .34 .35 .35 .36
8.00 DISCHG .36 .37 .37 .38 .38 .39 .40 .41 .41 .42
8.80 DISCHG .43 .44 .45 .45 .46 .47 .48 .49 .50 .51
9.60 DISCHG .52 .53 .54 .55 .56 .56 .57 .58 .59 .60
10.40 DISCHG .61 .62 .63 .64 2.49 7.89 15.85 23.01 29.43 35.24
11.20 DISCHG 40.70 45.84 50.78 55.91 63.83 77.35 107.81 160.42 240.65 358.52
12.00 DISCHG 543.31 701.78 740.53 642.21 510.46 390.55 307.16 245.56 199.34 165.14
12.80 DISCHG 140.29 125.81 113.65 103.22 94.45 86.82 80.21 74.63 69.78 65.51
13.60 DISCHG 61.82 58.41 55.61 53.59 51.63 49.75 47.99 46.33 44.71 43.17
14.40 DISCHG 41.70 40.23 38.82 37.45 36.07 34.73 33.53 32.52 31.69 31.01
15.20 DISCHG 30.46 30.01 29.57 29.01 28.32 27.63 27.01 26.48 26.04 25.68
16.00 DISCHG 25.39 25.16 24.98 24.83 24.71 24.61 24.54 24.45 24.26 23.86
16.80 DISCHG 23.33 22.80 22.33 21.93 21.59 21.32 21.10 20.93 20.79 20.67
17.60 DISCHG 20.58 20.51 20.45 20.35 20.08 19.63 19.09 18.59 18.14 17.77
18.40 DISCHG 17.46 17.21 17.01 16.85 16.72 16.61 16.53 16.46 16.41 16.36
19.20 DISCHG 16.33 16.30 16.28 16.26 16.25 16.24 16.23 16.22 16.16 15.93
TR20 XEQ 9/23/99 GRANDOVER (WEST) COMMERCIAL- POST-DEV. W/PONDS 50 YR, 09/23/99 20
REV 09/01/83 30
20.00 DISCHG 15.50 14.99 14.49 14.06 13.70 13.40 13.16 12.96 12.8
20.80 DISCHG 12.57 12.49 12.42 12.37 12.33 12.30 12.27 12.25 12.2.
21.60 DISCHG 12.20 12.20 12.19 12.18 12.18 12.18 12.17 12.17 12.1'
22.40 DISCHG 12.17 12.17 12.17 12.17 12.17 12.17 12.17 12.17 12.1'
23.20 DISCHG 12.17 12.17 12.17 12.17 12.17 12.17 12.17 12.17 12.1:
RUNOFF VOLUME ABOVE BASEFLOW = 4.90 WATERSHED INCHES, 759.65 CFS-HRS, 62 .78 ACRE-F EET; BASEFLOW =
OPERATION RUNOFF CROSS SECTION 4
OUTPUT HYDROGRAPH= 4
AREA= .03 SQ MI INPUT RUNOFF CURVE= 90. TIME OF CON CENTRATION= .23 HOURS
INTERNAL HYDROGRAPH TIME INCREMENT= .0307 HOURS
PEAK TIM E(HRS) PEAK DISCHARGE(CFS) P EAK ELEVATION(FEET)
12.03 97.75 (RUNOFF)
IME(HRS) F IRST HYDROGRAPH POINT = .00 HOURS TIME INCREMENT = .08 HOURS DRAINAGE AREA =
2.40 DISCHG .00 .00 .00 .00 .00 .00 .00 .00 .01
3.20 DISCHG .03 .05 .06 .07 .09 .10 .11 .13 .15
4.00 DISCHG .22 .24 .26 .29 .31 .33 .35 .36 .38
4.80 DISCHG .42 .44 .45 .47 .49 .50 .52 .53 .55
5.60 DISCHG .58 .59 .61 .62 .63 .65 .68 .76 .82
6.40 DISCHG .89 .91 .93 .95 .97 .99 1.00 1.02 1.04
7.20 DISCHG 1.07 1.08 1.10 1.11 1.12 1.14 1.15 1.16 1.18
8.00 DISCHG 1.20 1.24 1.35 1.43 1.50 1.62 1.73 1.79 1.82
8.80 DISCHG 1.87 1.89 1.91 1.94 2.03 2.15 2.23 2.27 2.30
9.60 DISCHG 2.41 2.54 2.63 2.69 2.72 2.75 2.81 2.95 3.06
10.40 DISCHG 3.44 3.68 3.87 4.25 4.63 4.89 5.30 5.72 6.00
11.20 DISCHG 6.87 7.19 7.74 8.50 9.27 14.91 26.00 34.10 48.05
12.00 DISCHG 95.74 94.18 64.71 38.54 26.32 19.10 14.86 12.82 11.34
12.80 DISCHG 9.78 9.01 8.21_ 7.77 7.28 6.75 6.46 6.15 5.79
13.60 DISCHG 5.33 4.99 4.76 4.61 4.41 4.28 4.18 4.01 3.87
14.40 DISCHG 3.61 3.47 3.38 3.21 3.06 2.99 2.96 2.95 2.94
15.20 DISCHG 2.94 2.93 2.84 2.68 2.59 2.55 2.53 2.53 2.52
16.00 DISCHG 2.52 2.52 2.52 2.52 2.52 2.52 2.52 2.50 2.36
16.80 DISCHG 2.15 2.13 2.11 2.11 2.11 2.10 2.10 2.11 2.11
17.60 DISCHG 2.11 2.11 2.10 2.04 1.89 1.77 1.72 1.70 1.69
18.40 DISCHG 1.69 1.69 1.69 1.69 1.69 1.69 1.69 1.69 1.69
19.20 DISCHG 1.69 1.69 1.69 1.69 1.69 1.69 1.69 1.69 1.62
20.00 DISCHG 1.35 1.30 1.28 1.27 1.27 1.27 1.27 1.27 1.27
20.80 DISCHG 1.27 1.27 1.27 1.27 1.27 1.27 1.27 1.27 1.27
21.60 DISCHG 1.27 1.27 1.27 1.27 1.27 1.27 1.27 1.27 1.27
22.40 DISCHG 1.27 1.27 1.27 1.27 1.27 1.27 1.27 1.27 1.27
23.20 DISCHG 1.27 1.27 1.27 1.27 1.27 1.27 1.27 1.27 1.20
RUNOFF VOLUME ABOV E BASEFLOW = 5.51 WATERSHED INCHES, 88.96 CFS-HRS, 7.3 5 ACRE-FEET; BASEFLOW =
IERATION RE
SVOR S
1 TRUCTURE 17
JOB 1
12.67
12.22
12.17
12.17
11.89
00 CFS
.03 SQ.M
.02
.18
.40
.56
.86
1.05
1.19
1.85
2.33
3.18
6.41
75.40
10.31
5.58
3.78
2.94
2.52
2.22
2.11
1.69
1.69
1.47
1.27
1.27
1.27
1.27
1.05
00 CFS
jai
_J
TR20 XEQ 9/23/99 GRANDOVER (WEST) COMMERCIAL- POST-DEV. W/PONDS 50 YR, 09/23/99
REV 09/01/83
INPUT HYDROGRAPH= 4 OUTPUT HYDROGRAPH= 5
SURFACE ELEVATION= 814.00
41
TIME(HRS)
4.00
4.00
4.80
4.80
5.60
5.60
6.40
6.40
7.20
7.20
8.00
8.00
8.80
8.80
9.60
9.60
10.40
10.40
11.20
11.20
12.00
12.00
12.80
12.80
13.60
13.60
14.40
14.40
15.20
15.20
16.00
16.00
16.80
16.80
17.60
17.60
18.40
18.40
19.20
19.20
20.00
20.00
20.80
20 JOB 1
30
PEAK TIME(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET)
12.13 79.42 817.57
FIRST HYDROG RAPH POINT = .00 HOURS TIME INCREMENT = .08 HOURS DRAINAGE AREA = .03 SQ.M
DISCHG .00 .00 .00 01 .O1 01 .O1 .01 .01 .01
ELEV 814.00 814.00 814.00 814.02 814.03 814.03 814.04 814.04 814.05 814.05
DISCHG .01 .01 .02 .02 .02 .02 .02 .02 .03 .03
ELEV 814.06 814.06 814.07 814.07 814.08 814.08 814.09 814.10 814.10 814.11
DISCHG .03 .03 .03 .03 .04 .04 .04 .04 .04 .05
ELEV 814.12 814.13 814.13 814.14 814.15 814.16 814.16 814.17 814.18 814.19
DISCHG .05 .0S .05 .06 .06 .06 .07 .07 .07 .07
ELEV 814.20 814.22 814.23 814.24 814.25 814.26 814.27 814.29 814.30 814.31
DISCHG .08 .08 .08 .09 .09 .09 .10 .10 .10 .11
ELEV 814.33 814.34 814.35 814.36 814.38 814.39 814.41 814.42 814.43 814.45
DISCHG .11 .11 .12 .12 .13 .13 .14 .14 .15 .15
ELEV 814.46 814.48 814.49 814.51 814.53 814.54 814.56 814.59 814.61 814.63
DISCHG .16 .16 .17 .17 .18 .18 .19 .20 .20 .21
ELEV 814.65 814.67 814.70 814.72 814.74 814.77 814.80 814.82 814.85 814.88
DISCHG .22 .22 .23 .24 .24 .25 .25 .25 .26 .26
ELEV 814.91 814.93 814.97 815.00 815.03 815.06 815.09 815.12 815.15 815.19
DISCHG .26 .27 .27 .28 .28 .29 .29 .30 .31 .66
ELEV 815.23 815.27 815.31 815.36 815.41 815.46 815.52 815.58 815.65 815.72
DISCHG 1.72 2.65 3.50 4.32 5.12 7.23 11.43 17.35 25.71 40.22
ELEV 815.79 815.84 815.89 815.94 815.99 816.06 816.19 816.36 816.58 816.90
DISCHG 60.93 77.10 78.22 65.58 49.83 38.15 29.62 23.26 19.41 16.68
ELEV 817.27 817.53 817.55 817.34 817.08 816.85 816.67 816.53 816.43 816.34
DISCHG 14.57 12.92 11.55 10.42 9.50 8.71 8.04 7.49 7.01 6.59
ELEV 816.28 816.23 816.19 816.16 816.13 816.10 816.08 816.07 816.05 816.04
DISCHG 6.23 5.89 5.57_ 5.29 5.14 5.00 4.86 4.73 4.59 4.45
ELEV 816.03 816.02 816.01 816.00 815.99 815.98 815.98 815.97 815.96 815.95
DISCHG 4.32 4.18 4.05 3.91 3.78 3.64 3.53 3.43 3.34 3.27
ELEV 815.94 815.93 815.93 815.92 815.91 815.90 815.89 815.89 815.88 815.88
DISCHG 3.21 3.16 3.11 3.05 2.98 2.91 2.84 2.79 2.74 2.70
ELEV 815.88 815.87 815.87 815.87 815.86 815.86 815.85 815.85 815.85 815.84
DISCHG 2.67 2.64 2.62 2.61 2.59 2.58 2.57 2.56 2.54 2.49
ELEV 815.84 815.84 815.84 815.84 815.84 815.84 815.84 815.84 815.83 815.83
DISCHG 2.44 2.39 2.34 2.30 2.26 2.24 2.21 2.19 2.18 2.17
ELEV 815.83 815.83 815.82 815.82 815.82 815.82 815.82 815.81 815.81 815.81
DISCHG 2.16 2.15 2.14 2.13 2.10 2.05 2.00 1.95 1.90 1.86
ELEV 815.81 815.81 815.81 815.81 815.81 815.81 815.80 815.80 815.80 815.79
DISCHG 1.83 1.81 1.79 1.77 1.75 1.74 1.73 1.72 1.72 1.71
ELEV 815.79 815.79 815.79 815.79 815.79 815.79 815.79 815.79 815.79 815.78
DISCHG 1.71 1.70 1.70 1.70 1.70 1.69 1.69 1.69 1.69 1.66
ELEV 815.78 815.78 815.78 815.78 815.78 815.78 815.78 815.78 815.78 815.78
DISCHG 1.62 1.56 1.52 1.47 1.44 1.41 1.38 1.36 1.35 1.33
ELEV 815.78 815.78 815.77 815.77 815.77 815.77 815.77 815.76 815.76 815.76
DISCHG 1.32 1.31 1.30 1.30 1.29 1.29 1.28 1.28 1.28 1.28

TR20 XEQ 9/23/99 GRANDOVER (WEST) COMMERCIAL- POST-DEV. W/PONDS 50 YR, 09/23/99 20 JOB 1
REV 09/01/83
30
20.80
21.60 ELEV
DISCHG 815.76
1.27 815.76
1.27 815.76
1.27 815.76
1.27 815.76
1.27 815.76
1.27 815.76
1.27 815.76
1.27 815.76
1.27 815.76
1.27
21.60 ELEV 815.76 815.76 815.76 815.76 815.76 815.76 815.76 815.76 815.76 815.76
22.40 DISCHG 1.27 1.27 1.27 1.27 1.27 1.27 1.27 1.27 1.27 1.27
22.40 ELEV 815.76 815.76 815.76 815.76 815.76 815.76 815.76 815.76 815.76 815.76
23.20 DISCHG 1.27 1.27 1.27 1.27 1.27 1.27 1.27 1.27 1.26 1.24
23.20 ELEV 815.76 815.76 815.76 815.76 815.76 815.76 815.76 815.76 815.76 815.76
RUNOFF VOLUME ABOVE BASEFLOW = 4.82 WATERSHED INCH ES, 77.81 CFS- HRS, 6 .43 ACRE-FEET; BASE FLOW .00 CFS
PERATION REACH CROSS SECTION 6
INPUT HYDROGRAPH= 5 OUTPUT HYDROGRAPH= 6
LENGTH = 800.00 F EET INPUT = COEFF ICIENTS RELATED TO CROSS SECTIONAL AREA, X= 1.60, M= 1.44
MODIFIED ATT-KIN ROU TING COEFFICIENT
1
0 0 E
=
. P
AK TRAVEL TIME _ .00 HOURS
*** WARNING REACH 6 ATT-KIN COEFF.(C) GREATER THAN 0.667, CONSIDER REDUC ING MAIN TIME INCREMENT ***
PEAK TIM E(HRS) PEAK DISCHARGE (CFS) PEAK ELEVATION(FEET)
12.13 79.42 (NULL)
R IME(HRS)
F IRST HYDROGR APH POINT = .00 HOURS TIME INCREMENT = .08 HOURS DRAINAGE AREA = .03 SQ.M
4.00 DISCHG .00 .00 .00 .01 .01 .01 .01 .01 .01 .01
4.80 DISCHG .01 .01 .02 .02 .02 .02 .02 .02 .03 .03
5.60 DISCHG .03 .03 .03 .03 .04 .04 .04 .04 .04 .05
6.40 DISCHG .05 .05 .05 .06 .06 .06 .07 .07 .07 .07
7.20
8.00 DISCHG
DISCHG 08
.11 OS
.11 .08
.12 .09
.12 .09
.13 .09
.13 .10
.14 .10
.14 .10
.15 .11
.15
8.80 DISCHG .16 .16 .17 .17 .18 .18 .19 .20 .20 .21
9.60 DISCHG .22 .22 .23 .24 .24 .25 .25 .25 .26 .26
10.40 DISCHG .26 .27 .27_ .28 .28 .29 .29 .30 .31 .66
11.20 DISCHG 1.72 2.65 3.50 4.32 5.12 7.23 11.43 17.35 25.71 40.22
12.00 DISCHG 60.93 77.10 78.22 65.58 49.83 38.15 29.62 23.26 19.41 16.68
12.80 DISCHG 14.57 12.92 11.55 10.42 9.50 8.71 8.04 7.49 7.01 6.59
13.60 DISCHG 6.23 5.89 5.57 5.29 5.14 5.00 4.86 4.73 4.59 4.45
14.40 DISCHG 4.32 4.18 4.05 3.91 3.78 3.64 3.53 3.43 3.34 3.27
15.20 DISCHG 3.21 3.16 3.11 3.05 2.98 2.91 2.84 2
79 2
74 2
70
16.00 DISCHG 2.67 2.64 2.62 2.61 2.59 2.58 2.57 .
2.56 .
2.54 .
2.49
16.80 DISCHG 2.44 2.39 2.34 2.30 2.26 2.24 2.21 2.19 2.18 2.17
17.60 DISCHG 2.16 2.15 2.14 2.13 2.10 2.05 2.00 1.95 1.90 1.86
18.40 DISCHG 1.83 1.81 1.79 1.77 1.75 1.74 1.73 1.72 1.72 1.71
19.20 DISCHG 1.71 1.70 1.70 1.70 1.70 1.69 1.69 1.69 1.69 1.66
20.00 DISCHG 1.62 1.56 1.52 1.47 1.44 1.41 1.38 1.36 1.35 1.33
20.80 DISCHG 1.32 1.31 1.30 1.30 1.29 1.29 1.28 1.28 1.28 1.28
21.60 DISCHG 1.27 1.27 1.27 1.27 1.27 1.27 1.27 1.27 1.27 1.27
22.40 DISCHG 1.27 1.27 1.27 1.27 1.27 1.27 1.27 1.27 1.27 1.27
23.20 DISCHG 1.27 1.27 1.27 1.27 1.27 1.27 1
27 1
27 1
26 1.24
. . .
RUNOFF VOLUME ABOVE BASEFLOW = 4.82 WATE RSHED INCHES, 77.81 CFS-HRS, 6.43 ACRE-FEET; BASEFLOW = .00 CFS

i
A
TR20 XEQ 9/23/99 GRANDOVER (WEST) COMMERCIAL- POST-DEV. W/PONDS 50 YR, 09/23/99 20
REV 09/01/83 30
OPERATION RUNOFF CROSS SECTION 7
OUTPUT HYDROGRAPH= 7
AREA= .03 SQ MI INPUT RUNOFF CURVE= 85. TIME OF CONCENTRATION= .17 HOURS
INTERNAL HYDROGRAPH TIME INCREMENT= .0227 HOURS
TIME(HRS)
4.00
4.80
5.60
6.40
7.20
8.00
8.0
9.660
10.40
11.20
12.00
12.80
13.60
14.40
15.20
16.00
16.80
17.60
18.40
19.20
® 20.00
® 20.80
21.60
22.40
23.20
PEAK TIME(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET)
12.00 117.69 (RUNOFF)
FIRST HYDROGRAPH POI14T = .00 HOURS TIME INCR EMENT = .08 HOURS
DISCHG .00 .00 .00 .00 .00 .00 .02
DISCHG .09 .11 .13 .15 .16 .18 .20
DISCHG .27 .28 .30 .31 .33 .35 .38
DISCHG .54 .56 .58 .60 .63 .65 .67
DISCHG .74 .76 .78 .80 .82 .84 .85
DISCHG .92 .98 1.09 1.15 1.22 1.35 1.42
DISCHG 1.55 1.58 1.61 1.64 1.77 1.89 1.94
DISCHG 2.17 2.31 2.39 2.43 2.47 2.50 2.60
DISCHG 3.36 3.54 3.75 4.27 4.59 4.82 5.37
DISCHG 7.03 7.31 8.15 8.97 9.87 20.31 33.56
DISCHG 117.69 100.01 51.79 30.45 22.53 16.77 14.34
DISCHG 10.90 9.75 9.00 8.68 7.99 7.47 7.27
DISCHG 5.95 5.54 5.39 5.20 4.97 4.88 4.75
DISCHG 4.05 3.94 3.84 3.60 3.46 3.42 3.41
DISCHG 3.41 3.39 3.20 3.02 2.95 2.93 2.93
DISCHG 2.93 2.93 2.93 2.93 2.93 2.93 2.93
DISCHG 2.46 2.45 2.45 2.45 2.45 2.45 2.45
DISCHG 2.45 2.45 2.45 2.31 2.09 2.00 1.97
DISCHG 1.96 1.96 1.96 1.96 1.96 1.96 1.96
DISCHG 1.96 1.97 1.97 1.97 1.97 1.97 1.97
DISCHG 1.51 1.49 1.48_ 1.48 1.48 1.48 1.48
DISCHG 1.48 1.48 1.48 1.48 1.48 1.48 1.48
DISCHG 1.48 1.48 1.48 1.48 1.48 1.48 1.48
DISCHG 1.48 1.48 1.48 1.48 1.48 1.48 1.48
DISCHG 1.48 1.48 1.48 1.48 1.48 1.48 1.48
DRAINAGE AREA =
.03 .05
.22 .23
.45 .49
.69 .71
.87 .89
1.47 1.50
1.98 2.02
2.77 2.86
5.76 6.00
39.91 64.18
13.31 12.01
6.85 6.46
4.51 4.41
3.41 3.41
2.93 2.93
2.87 2.64
2.45 2.45
1.97 1.96
1.96 1.96
1.96 1.82
1.48 1.48
1.48 1.48
1.48 1.48
1.48 1.48
1.48 1.33
JOB 1
.03 SQ.M
.07
.25
.51
.73
.90
1.53
2.05
3.02
6.56
100.93
11.32
6.32
4.29
3.41
2.93
2.50
2.45
1.96
1.96
1.60
1.48
1.48
1.48
1.48
1.11
RUNOFF VOLUME ABOVE BASEFLOW = 4.96 WATERSHED INCHES, 96.02 CFS-HRS, 7.94 ACRE-FEET; BASEFLOW = .00 CFS
OPERATION ADDHYD CROSS SECTION 8
INPUT HYDROGRAPHS= 7,6 OUTPUT HYDROGRAPH= 5
*ELEVATION OUTPUT OPTION REQUESTED BUT NO ELEVATIONS GIVEN***
I
TIME(HRS)
4.00
PEAK TIME(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET)
12.04 182.77 (NULL)
FIRST HYDROGRAPH POINT = .00 HOURS TIME INCREMENT = .08 HOURS DRAINAGE AREA = .05 SQ.M
DISCHG .00 .00 .00 .01 .01 .01 .03 .04 .06 .08
TR20 XEQ 9/23/99 GRANDOVER (WEST) COMMERCIAL- POST-DEV. W/PONDS 50 YR, 09/23/99 20 JOB 1
REV 09/01/83
30
4.80 DISCHG .10 .12 .14 .16 .18 .20 .22 .24 .26 28
5.60 DISCHG .29 .31 .33 .35 .37 .38 .42 .49 .53 .
.56
6.40 DISCHG .59 .61 .64 .66 .69 .71 .73 .76 .78 .80
7.20 DISCHG .82 .84 .87 .89 .91 .93 .95 .97 .99 1.01
8.00 DISCHG 1.03 1.10 1.21 1.27 1.35 1.48 1.56 1.61 1.64 1.68
8.80 DISCHG 1.71 1.74 1.77 1.82 1.95 2.07 2.13 2.18 2.22 2.26
9.60 DISCHG 2.39 2.54 2.62 2.67 2.71 2.75 2.85 3.02 3.12 3.28
10.40 DISCHG 3.62 3.81 4.02 4.54 4.87 5.11 5.66 6.06 6.30 7.22
11.20 DISCHG 8.74 9.96 11.65 13.29 15.00 27.54 44.99 57.26 89.90 141.15
12.00 DISCHG 178.62 177.11 130.01 96.03 72.36 54.92 43.96 36.57 31.42 28.00
12.80 DISCHG 25.47 22.67 20.55 19.10 17.49 16.18 15.31 14.34 13
47 12
91
13.60 DISCHG 12.18 11.42 10.95 10.49 10.11 9.88 9.61 9.24 .
9.00 .
8.75
14.40 DISCHG 8.37 8.12 7.89 7.51 7.24 7.07 6.94 6.83 6.75 6.68
15.20 DISCHG 6.62 6.56 6.32 6.07 5.93 5.84 5.77 5.71 5.67 5.63
16.00 DISCHG 5.60 5.57 5.55 5.54 5.52 5.51 5.50 5.43 5.17 5.00
16.80 DISCHG 4.90 4.84 4.79 4.75 4.71 4.68 4.66 4.64 4.63 4.61
17.60 DISCHG 4.60 4.60 4.59 4.43 4.18 4.05 3.97 3.91 3.86 3.83
18.40 DISCHG 3.80 3.77 3.75 3.73 3.72 3.71 3.70 3.69 3.68 3.68
19.20 DISCHG 3.67 3.67 3.67 3.66 3.66 3.66 3.66 3.65 3.51 3.26
20.00 DISCHG 3.13 3.05 3.00 2.95 2.91 2.88 2.86 2.84 2.82 2.81
20.80 DISCHG 2.80 2.79 2.78 2.77 2.77 2.76 2.76 2.76 2.76 2.75
21.60 DISCHG 2.75 2.75 2.75 2.75 2.75 2.75 2.75 2.75 2.75 2.75
22.40 DISCHG 2.75 2.75 2.75 2.75 2.75 2.75 2.75 2.75 2.75 2.75
23.20 DISCHG 2.75 2.75 2.75 2.75 2.75 2.75 2.75 2.74 2.60 2.35
RUNOFF VOLUME ABOVE BASEFLOW 4.90 WATERSHED INCHES, 173.83 CFS-HRS, 14 .37 ACRE-FEET; BASEFLOW .00 CFS
PERATION RESVOR STRUCTURE 1
INPUT HYDROGRAPH= 5 OUTPUT HYDROGRAP H= 4
SURFACE ELEVATION= 798.50
PEAK TIM E(HR
S) PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET)
12.23 102.78 801.21
1IME(HRS) F IRST HYDROGRAPH POINT = .00 HOURS TIME INCREM ENT = .08 HOURS DRAINAGE AREA = .05 SQ.M
5.60 DISCHG .00 .00 .00 .00 .00 .00 .00 .00 .01 .01
5.60 ELEV 798.50 798.50 798.50 798.50 798.50 798.50 798.50 798.50 798.53 798.53
6.40 DISCHG 01 01 01 01 01 01 01 01 01 01
6.40 ELEV 798.53 798.53 798.54 798.54 798.54 798.55 798.55 798.55 798.56 798.56
7.20 DISCHG .01 .01 .01 .02 .02 .02 .02 .02 .02 .02
7.20 ELEV 798.56 798.57 798.57 798.58 798.58 798.58 798.59 798.59 798.60 798.60
8.00 DISCHG .02 .02 .02 .02 .03 .03 .03 .03 .03 .03
8.00 ELEV 798.61 798.61 798.62 798.62 798.63 798.64 798.64 798.65 798.66 798.66
8.80
8.80 DISCHG
ELEV .03
798.67 .04
798.68 .04
798.69 .04
798.70 .04
798.71 .04
798.71 .04
798.72 OS
798.73 OS
798.74 .05
798.76
9.60 DISCHG .05 .06 .06 .06 .06 .07 .07 .07 .07 .08
9.60 ELEV 798.77 798.78 798.79 798.80 798.81 798.83 798.84 798.85 798.87 798.88
10.40 DISCHG 08 08 .09 .09 .09 .10 .12 .15 .18 .21
10.40 ELEV 798.90 798.91 798.93 798.95 798.97 799.00 799.02 799.04 799.07 799.09

r
I
TR20 XEQ 9/23/99
S REV 09/01/83
GRANDOVER (WEST) COMMERCIAL- POST-DEV. W/PONDS 50 YR, 09/23/99
11.20 DISCHG .24 .28 .33 .39
11.20 ELEV 799.12 799.16 799.20 799.25
12.00 DISCHG 56.68 83.63 99.69 102.75
12.00 ELEV 800.64 800.99 801.17 801.21
12.80 DISCHG 49.53 44.36 40.38 36.78
12.80 ELEV 800.54 800.47 800.40 800.34
13.60 DISCHG 20.19 18.72 17.40 16.43
13.60
14.40 ELEV
DISCHG 800.06
12.21 800.03
11.74 800.01
11.29 799.99
10.86
14.40 ELEV 799.86 799.84 799.83 799.81
15.20 DISCHG 8.51 8.28 8.06 7.83
15.20 ELEV 799.74 799.73 799.73 799.72
16.00 DISCHG 6.60 6.48 6.37 6.27
16.00 ELEV 799.68 799.68 799.68 799.67
16.80 DISCHG 5.69 5.59 5.50 5.41
16.80 ELEV 799.65 799.65 799.65 799.65
17.60 DISCHG 4.96 4.92 4.88 4.83
17.60 ELEV 799.63 799.63 799.63 799.63
18.40 DISCHG 4.31 4.25 4.19 4.14
18.40 ELEV 799.61 799.61 799.61 799.61
19.20 DISCHG 3.87 3.85 3.83 3.81
19.20 ELEV 799.60 799.60 799.60 799.60
20.00 DISCHG 3.63 3.56 3.50 3.44
20.00 ELEV 799.59 799.59 799.59 799.59
20.80
20.80 DISCHG
ELEV 3.09
799.57 3.05
799.57 3.02
799.57 2.99
799.57
21.60 DISCHG 2.85 2.84 2.83 2.82
21.60 ELEV 799.57 799.57 799.57 799.57
22.40 DISCHG 2.78 2.77 2.77 2.77
22.40 ELEV 799.56 799.56 799.56 799.56
23.20 DISCHG 2.76 2.76 2.75 2.75
23.20 ELEV 799.56 799.56 799.56 799.56
RUNOFF VOLUME ABOVE BASEFLOW = 4.33 WATERSHED INCHES,
.45 .54
799.30 799.38
98.49 90.48
801.16 801.07
33.54 30.62
800.28 800.23
15.70 15.01
799.96 799.94
10.44 10.05
799.80 799.79
7.61 7.41
799.71 799.71
6.18 6.10
799.67 799.67
5.33 5.25
799.64 799.64
4.77 4.69
799.63 799.62
4.09 4.04
799.61 799.60
3.79 3.78
799.60 799.60
3.38 3.32
799.58 799.58
2.96 2.94
799.57 799.57
2.81 2.80
799.57 799.57
2.77 2.76
799.56 799.56
2.75 2.75
799.56 799.56
1.36
799.52
81.14
800.96
28.01
800.19
14.38
799.92
9.68
799.78
7.22
799.70
6.03
799.67
5.18
799.64
4.61
799.62
4.00
799.60
3.76
799.60
3.27
799.58
2.92
799.57
2.80
799.57
2.76
799.56
2.75
799.56
7.32
799.71
72.05
800.84
25.71
800.15
13.79
799.90
9.35
799.77
7.04
799.70
5.96
799.66
5.12
799.64
4.53
799.62
3.96
799.60
3.75
799.59
3.22
799.58
2.90
799.57
2.79
799.57
2.76
799.56
2.75
799.56
20 JOB 1
30
15.26 32.07
799.95 800.26
63.59 56.05
800.73 800.63
23.64 21.81
800.12 800.08
13.23 12.71
799.89 799.87
9.04 8.76
799.76 799.75
6.88 6.73
799.69 799.69
5.88 5.79
799.66 799.66
5.06 5.01
799.64 799.63
4.45 4.38
799.62 799.61
3.93 3.90
799.60 799.60
3.73 3.69
799.59 799.59
3.17 3.13
799.58 799.58
2.88 2.87
799.57 799.57
2.79 2.78
799.57 799.56
2.76 2.76
799.56 799.56
2.74 2.71
799.56 799.56
153.82 CFS-HRS, 12.71 ACRE-FEET; BASEFLOW = .00 CFS
1PERATION REACH CROSS SECTION 10
INPUT HYDROGRAPH= 4 OUTPUT HYDROGRAPH= 6
LENGTH = 800.00 FEET INPUT = COEFFICIENT S RELATED TO CROSS SECTIONAL AREA, X= 1.60, M= 1.44
MODIFIED ATT-KIN ROUTING COEFFICIENT = 1.00 PEAK TRAVEL TIME _ .00 HOURS
*** WARNING REACH 10 ATT-KIN COEFF.(C) GREATER THAN 0.667, CONSIDER REDUCING MAIN TIME INCREMENT ***
PEAK TIME(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET)
12.23 102.78 (NULL)
TIME(HRS) FIRST HYDROGRAPH POINT = .00 HOURS TIME INCREMENT = .08 HOURS DRAINAGE AREA = .05 SQ.M
5.60 DISCHG .00 .00 .00 .00 .00 .00 .00 .00 .01 .01
6.40 DISCHG .01 .01 .01 .01 .01 .01 .01 .01 .01 .01
7.20 DISCHG .01 .01 .01 .02 .02 .02 .02 .02 .02 .02
??k
TR20 XEQ 9/23/99 GRANDOVER (WEST) COMMERCIAL- POST-DEV. W/PONDS 50 YR, 09/23/99 20 JOB 1
REV 09/01/83 30
8.00 DISCHG .02 .02 .02 .02 .03 .03 .03 .03 .03 03
8.80 DISCHG .03 .04 .04 .04 .04 .04 .04 .05 .05 .
.05
9.60 DISCHG .05 .06 .06 .06 .06 .07 .07 .07 .07 .08
10.40 DISCHG .08 .08 .09 .09 .09 .10 .12 .15 .18 .21
11.20 DISCHG .24 .28 .33 .39 .45 .54 1.36 7.32 15.26 32.07
12.00 DISCHG 56.68 83.63 99.69 102.75 98.49 90.48 81.14 72.05 63.59 56.05
12.80 DISCHG 49.53 44.36 40.38 36.78 33.54 30.62 28.01 25.71 23.64 21.81
13.60 DISCHG 20.19 18.72 17.40 16.43 15.70 15.01 14.38 13.79 13.23 12.71
14.40 DISCHG 12.21 11.74 11.29 10.86 10.44 10.05 9.68 9.35 9.04 8.76
15.20 DISCHG 8.51 8.28 8.06 7.83 7.61 7.41 7.22 7.04 6.88 6.73
16.00
16.80 DISCHG
DISCHG 6.60
5.69 6.48
5.59 6.37
5.50 6.27
5.41 6.18
5.33 6.10
5.25 6.03
5.18 5.96
5.12 5.88
5.06 5.79
5.01
17.60 DISCHG 4.96 4.92 4.88 4.83 4.77 4.69 4.61 4.53 4.45 4.38
18.40 DISCHG 4.31 4.25 4.19 4.14 4.09 4.04 4.00 3.96 3.93 3.90
19.20 DISCHG 3.87 3.85 3.83 3.81 3.79 3.78 3.76 3.75 3.73 3.69
20.00 DISCHG 3.63 3.56 3.50 3.44 3.38 3.32 3.27 3.22 3.17 3.13
20.80 DISCHG 3.09 3.05 3.02 2.99 2.96 2.94 2.92 2.90 2.88 2.87
21.60 DISCHG 2.85 2.84 2.83 2.82 2.81 2.80 2.80 2.79 2.79 2.78
22.40 DISCHG 2.78 2.77 2.77 2.77 2.77 2.76 2.76 2.76 2.76 2.76
23.20 DISCHG 2.76 2.76 2.75 2.75 2.75 2.75 2.75 2.75 2.74 2.71
RUNOFF VOLUME ABOVE BASEFLOW = 4.33 WATERSHED INCHES, 153.82 CFS- HRS, 12 .71 ACRE-F EET; BAS EFLOW .00 CFS
PERATION ADDHYD CROSS SECTION 11
INPUT HY DROGRAPHS= 6, 3 OUT PUT HYDROGRAPH= 1
* **ELEVATION OUTPUT OPTION REQUE STED BUT NO ELEVATIONS GIVEN ***
PEAK TIM E(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET)
12.15 841.59 (NULL)
IME(HRS) F IRST HYDROGRAPH POINT .00 HOURS TI14E INCREMENT = .08 HOURS DRAINAGE AREA = .29 SQ.M
3.20 DISCHG .00 .00 .00 .00 .00 .00 .01 .01 .01 .01
4.00 DISCHG .01 .02 .02 .02 .03 .03 .04 .04 .05 .05
4.80 DISCHG .06 .06 .07 .07 .08 .09 .09 .10 .11 .11
5.60 DISCHG .12 .13 .14 .14 .15 .16 .17 .18 .19 .20
6.40 DISCHG .22 .23 .24 .25 .27 .28 .29 .31 .31 .32
7.20 DISCHG .32 .33 .34 .34 .35 .35 .36 .36 .37 .38
8.00 DISCHG .38 .39 .40 .40 .41 .42 .43 .44 .45 .45
8.80 DISCHG .46 .47 .48 .49 .50 .52 .53 .54 .55 .56
9.60 DISCHG .58 .59 .60 .61 .62 .63 .64 .6S .66 .68
10.40 DISCHG .69 .70 .72 .73 2.59 7.99 15.98 23.15 29.61 35.45
11.20 DISCHG 40.94 46.13 51.11 56.29 64.28 77.90 109.17 167.74 255.91 390.58
12.00 DISCHG 599.99 785.41 840.22 744.97 608.94 481.03 388.30 317.61 262.93 221.20
12.80 DISCHG 189.82 170.18 154.03 140.00 127.99 117.44 108.23 100.34 93.42 87.32
13.60 DISCHG 82.01 77.13 73.01 70.02 67.33 64.76 62.38 60.12 57.94 55.88
14.40 DISCHG 53.91 51.97 50.11 48.31 46.51 44.77 43.22 41.87 40.73 39.77
15.20 DISCHG 38.97 38.29 37.63 36.84 35.94 35.04 34.22 33.52 32.92 32.41

7
LJ

TR20 XEQ 9/23/99 GRANDOVER (WEST) COMMERCIAL- POST-DEV. W/PONDS 50 YR , 09/23/99 20 JOB 1
REV 09/01/83 30
16.00
16.80 DISCHG
DISCHG 31.99
29.02 31.64
28.39 31.34
27.82 31.09
27.34 30.89
26.92 30.71
26.57 30.56
26.29 30.42
26.05 30.14
25.85 29.65
25.68
17.60 DISCHG 25.54 25.43 25.33 25.18 24.85 24.32 23.71 23.12 22.59 22.15
18.40 DISCHG 21.77 21.46 21.20 20.98 20.80 20.65 20.53 20.42 20.34 20.26
19.20 DISCHG 20.20 20.15 20.11 20.07 20.04 20.01 19.99 19.97 19.89 19.62
20.00 DISCHG 19.13 18.55 17.99 17.50 17.08 16.72 16.42 16.17 15.97 15.80
20.80 DISCHG 15.66 15.54 15.44 15.36 15.29 15.24 15.19 15.15 15.11 15.08
21.60 DISCHG 15.06 15.04 15.02 15.00 14.99 14.98 14.97 14.96 14.96 14.95
22.40 DISCHG 14.95 14.94 14.94 14.94 14.93 14.93 14.93 14.93 14.93 14.93
23.20 DISCHG 14.92 14.92 14.92 14.92 14.92 14.92 14.92 14.92 14.86 14.60
RUNOFF VOLUME ABOVE BASEFLOW = 4.80 WATERSHED INCHES, 913.48 CFS -HRS, 75.49 ACRE-FEET ; BASEFLOW = .00 CFS
PERATION RUNOFF CROSS SECTION 12
OUTPUT HYDROGRAPH= 2
AREA= .10 SQ MI INPUT RUNOFF CURVE= 82. TIME OF CONCENTRATION= .25 HOURS
INTERNAL HYDROGRAPH TIME INCREMENT= .0333 HOURS
PEAK TIME(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET)
12.05 338.62 (RUNOFF)
16.44 9.54 (RUNOFF)
17.66 7.97 (RUNOFF)
19.65 6.40 (RUNOFF)
'IME(HRS) FIRST HYDROGRAPH POINT .00 HOURS TIME INCR EMENT = .08 HOURS DRAINAGE AREA .10 SQ.M
4.80 DISCHG .00 .00 .00 .00 .00 .00 .02 .06 .10 .15
5.60
6.40 DISCHG
DISCHG 20
.89 .25
.97 .30
1.04 .35
1.11 .40
1.18 .45
1.24 .52
1.31 .62
1.38 .72
1.44 .81
1.50
7.20 DISCHG 1.57 1.63 1.69 1.75 1.81 1.87 1.93 1.99 2.04 2.10
8.00 DISCHG 2.15 2.25 2.46 2.67 2.85 3.10 3.36 3.54 3.68 3.79
8.80 DISCHG 3.89 3.98 4.08_ 4.18 4.41 4.72 4.96 5.13 5.26 5.38
9.60 DISCHG 5.60 5.95 6.26 6.46 6.62 6.75 6.96 7.33 7.70 8.08
10.40 DISCHG 8.75 9.45 10.05 11.09 12.23 13.09 14.27 15.58 16.59 17.84
11.20 DISCHG 19.34 20.54 22.23 24.59 27.22 41.86 74.57 103.56 149.13 237.89
12.00 DISCHG 319.81 331.70 246.51 153.41 104.60 75.85 58.71 49.67 43.56 39.21
12.80 DISCHG 36.69 34.01 31.09 29.25 27.48 25.53 24.29 23.18 21.90 21.01
13.60 DISCHG 20.14 18.90 17.98 17.37 16.68 16.15 15
75 15
14 14
61 14
24
14.40 DISCHG 13.66 13.12 12.75 12.19 11.62 11.29 .
11.16 .
11.10 .
11.07 .
11.06
15.20 DISCHG 11.06 11.03 10.74 10.21 9.82 9.64 9.57 9.53 9.52 9.51
16.00 DISCHG 9.51 9.51 9.52 9.52 9.52 9.52 9.53 9.45 9.01 8.49
16.80 DISCHG 8.19 8.06 8.00 7.97 7.96 7.96 7.96 7.96 7.96 7.96
17.60 DISCHG 7.97 7.97 7.96 7.76 7.24 6.78 6.57 6.47 6.42 6.40
18.40 DISCHG 6.39 6.39 6.39 6.39 6.39 6.39 6.39 6.39 6.40 6.40
19.20 DISCHG 6.40 6.40 6.40 6.40 6.40 6.40 6.40 6.40 6.19 5.67
20.00 DISCHG 5.21 4.99 4.89 4.84 4.82 4.81 4.81 4.81 4.81 4.81
20.80 DISCHG 4.81 4.81 4.81 4.81 4.81 4.81 4.82 4.82 4.82 4.82
21.60 DISCHG 4.82 4.82 4.82 4.82 4.82 4.82 4
82 4
82 82
4 82
4
22.40 DISCHG 4.82 4.82 4.82 4.82 4.83 4.83 .
4.83 .
4.83 .
4.83 .
4.83
23.20 DISCHG 4.83 4.83 4.83 4.83 4.83 4.83 4.83 4.82 4.62 4.09

TR20 XEQ 9/23/99 GRANDOVER (WEST) COMMERCIAL- POST-DEV. W/PONDS 50 YR, 09/23/99 20 JOB 1
REV 09/01/83 30
RUNOFF VOLUME ABOVE BASEFLOW = 4.62 WATERSHED INCHES, 297.98 CFS-HRS, 24.62 ACRE-FEET; BASEFLOW = .00 CFS
OPERATION ADDHYD CROSS SECTION 13
INPUT HYDROGRAPHS= 1,2 OUTPUT HYDROGRAPH= 3
***ELEVATION OUTPUT OPTION REQUESTED BUT NO ELEVATIONS GIVEN***
PEAK TIME(HRS) PEAK DISCHARGE(CFS)
12.11 1132.41
23.64 19.76
` IME(HRS)
FIRST HYDROG RAPH POINT .00 HOU RS
3.20 DISCHG .00 .00 .00 .00
4.00 DISCHG .01 .02 .02 .02
4.80 DISCHG .06 .06 .07 .07
5.60 DISCHG .32 .38 .44 .50
6.40
7.20 DISCHG
DISCHG 1.11
1.89 1.19
1.96 1.28
2.03 1.36
2.09
8.00 DISCHG 2.54 2.64 2.86 3.07
8.80 DISCHG 4.35 4.46 4.56 4.68
9.60 DISCHG 6.17 6.54 6.85 7.07
10.40 DISCHG 9.44 10.15 10.77 11.83
11.20 DISCHG 60.28 66.66 73.34 80.88
12.00 DISCHG 919.80 1117.11 1086.73 898.37
12.80 DISCHG 226.52 204.19 185.12 169.24
13.60 DISCHG 102.15 96.03 90.99 87.39
14.40 DISCHG 67.57 65.09 62.86 60.50
15.20 DISCHG 50.03 49.32 48.37 47.05
16.00 DISCHG 41.50 41.15 40.86 40.61
16.80 DISCHG 37.21 36.45 35.83 35.31
17.60 DISCHG 33.51 33.39 33.29_ 32.94
18.40 DISCHG 28.17 27.85 27.59 27.37
19.20 DISCHG 26.60 26.55 26.51 26.47
20.00
20.80 DISCHG
DISCHG 24.34
20.47 23.54
20.35 22.88
20.26 22.34
20.18
21.60 DISCHG 19.88 19.86 19.84 19.82
22.40 DISCHG 19.77 19.77 19.76 19.76
23.20 DISCHG 19.75 19.75 19.75 19.75
RUNOFF VOLUME ABOVE BASEFLOW = 4.75 WATERSHED INCHES,
OPERATION RESVOR STRUCTURE 15
INPUT HYDROGRAPH= 3 OUTPUT HYDROGRAPH= 4
SURFACE ELEVATION= 770.86
PEAK TIME(HRS) PEAK DISCHARGE(CFS)
12.20 1005.12
PEAK ELEVATION(FEET)
(NULL)
(NULL)
TIME INCREMENT = .08 HOURS
.00 .00 .01
.03 .03 .04
.08 .09 .12
.56 .61 .69
1.44 1.52 1.60
2.16 2.22 2.29
3.26 3.52 3.78
4.91 5.23 5.49
7.24 7.38 7.60
14.82 21.08 30.24
91.50 119.76 183.74
713.54 556.88 447.01
155.47 142.97 132.52
84.00 80.91 78.12
58.12 56.07 54.37
45.76 44.68 43.79
40.41 40.23 40.09
34.89 34.53 34.25
32.09 31.10 30.27
27.19 27.04 26.92
26.44 26.42 26.40
21.90 21.53 21.23
20.11 20.05 20.00
19.81 19.80 19.79
19.76 19.76 19.76
19.75 19.75 19.76
DRAINAGE AREA =
.01 .01
.04 .05
.16 .21
.79 .92
1.68 1.75
2.35 2.41
3.98 4.12
5.67 5.81
7.98 8.36
38.74 46.20
271.30 405.04
367.28 306.48
123.52 115.31
75.26 72.55
52.97 51.80
43.05 42.43
39.86 39.15
34.01 33.81
29.58 29.02
26.82 26.73
26.37 26.08
20.98 20.78
19.96 19.93
19.79 19.78
19.75 19.75
19.74 19.47
1211.45 CFS-HRS, 100.11 ACRE-FEET; BASEFLOW =
PEAK ELEVATION(FEET)
774.36
.39 SQ.M
.01
.05
.27
1.02
1.82
2.47
4.24
5.95
8.75
53.28
628.47
260.41
108.33
70.12
50.84
41.93
38.13
33.65
28.55
26.66
25.29
20.61
19.90
19.77
19.75
18.69
00 CFS
7

TR20 XEQ 9/23/99 GRANDOVER (WEST) COMMERCIAL- POST-DEV. W/PONDS 50 YR, 09/23/99 20 JOB 1
REV 09/01/83 30
TIME(HRS) FIRST HYDROG RAPH POINT .00 HOURS TIME INCREMENT = .08 HOURS DRAINAGE AREA .39 SQ.M
6.40 DISCHG .01 .01 .01 .01 .01 .01 .01 .01 .01 .01
6.40 ELEV 770.88 770.88 770.88 770.89 770.89 770.89 770.90 770.90 770.90 770.91
7.20 DISCHG .01 .02 .02 .02 .02 .02 .02 .02 .03 .03
7.20 ELEV 770.91 770.92 770.92 770.92 770.93 770.93 770.94 770.94 770.95 770.95
8.00 DISCHG .03 .03 .03 .03 .04 .04 .11 1.23 2.07 2.70
8.00 ELEV 770.96 770.97 770.97 770.98 770.99 770.99 771.00 771.01 771.01 771.02
8.80 DISCHG 3.18 3.54 3.83 4.07 4.28 4.52 4.77 5.01 5.23 5.42
8.80 ELEV 771.02 771.02 771.02 771.02 771.03 771.03 771.03 771.03 771.03 771.03
9.60 DISCHG 5.61 5.83 6.09 6.35 6.59 6.80 7.01 7.24 7.52 7
83
9.60 ELEV 771.03 771.04 771.04 771.04 771.04 771.04 771.04 771.04 771.05 .
771.05
10.40 DISCHG 8.21 8.68 9.21 9.83 10.87 12.98 16.76 22.04 28.13 34.57
10.40 ELEV 771.05 771.05 771.06 771.06 771.07 771.08 771.10 771.14 771.17 771.21
11.20 DISCHG 41.19 47.83 54.44 61.19 68.64 79.67 101.15 138.80 219.26 359.44
11.20 ELEV 771.25 771.30 771.34 771.38 771.42 771.49 771.62 771.86 772.19 772.67
12.00 DISCHG 572.14 820.09 989.96 991.54 878.28 739.97 607.74 496.30 415.40 353.22
12.00
12.80 ELEV
DISCHG 773.30
301.50 773.94
260.91 774.33
229.69 774.33
204.95 774.08
184.88 773.73
168.08 773.39
156.80 773.10
148.23 772.86
139.64 772.65
131.35
12.80 ELEV 772.47 772.33 772.23 772.15 772.08 772.02 771.97 771.91 771.86 771.81
13.60 DISCHG 123.57 116.28 109.49 103.44 98.15 93.48 89.32 85.55 82.08 78.88
13.60 ELEV 771.76 771.72 771.68 771.64 771.61 771.58 771.55 771.53 771.51 771.49
14.40 DISCHG 75.89 73.04 70.34 67.76 65.24 62.82 60.55 58.50 56.68 55.08
14.40 ELEV 771.47 771.45 771.43 771.42 771.40 771.39 771.37 771.36 771.35 771.34
15.20 DISCHG 53.70 52.50 51.41 50.31 49.14 47.97 46.86 45.83 44.91 44.10
15.20 ELEV 771.33 771.32 771.32 771.31 771.30 771.30 771.29 771.28 771.28 771.27
16.00 DISCHG 43.39 42.77 42.25 41.80 41.41 41.09 40.81 40.56 40.25 39.77
16.00 ELEV 771.27 771.26 771.26 771.26 771.26 771.25 771.25 771.25 771.25 771.25
16.80 DISCHG 39.14 38.45 37.76 37.11 36.51 35.97 35.50 35.09 34.74 34.44
16.80 ELEV 771.24 771.24 771.23 771.23 771.23 771.22 771.22 771.22 771.21 771.21
17.60 DISCHG 34.18 33.96 33.78 33.58 33.26 32.77 32.15 31.49 30.83 30.22
17.60 ELEV 771.21 771.21 771.21_ 771.21 771.21 771.20 771.20 771.19 771.19 771.19
18.40 DISCHG 29.67 29.17 28.74 28.36 28.04 27.77 27.53 27.34 27.17 27.03
18.40 ELEV 771.18 771.18 771.18 771.17 771.17 771.17 771.17 771.17 771.17 771.17
19.20 DISCHG 26.91 26.81 26.73 26.66 26.60 26.55 26.51 26.47 26.40 26.18
19.20 ELEV 771.17 771.17 771.16 771.16 771.16 771.16 771.16 771.16 771.16 771.16
20.00 DISCHG 25.77 25.23 24.63 24.03 23.46 22.94 22.48 22.07 21.71 21.41
20.00 ELEV 771.16 771.16 771.15 771.15 771.14 771.14 771.14 771.14 771.13 771.13
20.80 DISCHG 21.15 20.93 20.74 20.59 20.45 20.34 20.25 20.17 20.10 20.05
20.80 ELEV 771.13 771.13 771.13 771.13 771.13 771.13 771.12 771.12 771.12 771.12
21.60 DISCHG 20.00 19.96 19.93 19.90 19.87 19.85 19.84 19.82 19.81 19.80
21.60 ELEV 771.12 771.12 771.12 771.12 771.12 771.12 771.12 771.12 771.12 771.12
22.40 DISCHG 19.79 19.78 19.78 19.77 19.77 19.77 19.76 19.76 19.76 19.76
22.40 ELEV 771.12 771.12 771.12 771.12 771.12 771.12 771.12 771.12 771.12 771.12
23.20 DISCHG 19.76 19.76 19.75 19.75 19.75 19.75 19.75 19.75 19.71 19.52
23.20 ELEV 771.12 771.12 771.12 771.12 771.12 771.12 771.12 771.12 771.12 771.12
RUNOFF VOLUME ABOVE BASEFLOW = 4.72 WATERSHED INCHES, 1202.14 CPS-HRS, 99.3 4 ACRE-FE ET; BASEF LOW = .00 CFS
l
I
TR20 XEQ 9/23/99 GRANDOVER (WEST) COMMERCIAL- POST-DEV. W/PONDS 50 YR, 09/23/99 20 JOB 1
REV 09/01/83 30
OPERATI
N
O REACH CROSS SECT ION 15
INPUT HYDROGRAPH= 4 OUTPUT HYDROGRAPH= 5
LENGTH = 1200.00 FEET I NPUT = COEFFICIENTS RELATED TO CROSS SECTIONAL AREA, X= .85, M= 1.38
140DIFIED ATT-KIN R OUTING COEFF ICIENT = .99 PEAK TRAVEL TIME _ .08 HOURS
?l
¦'
LLL??3lll *** WARNING REACH 15 ATT-KIN COEFF.(C) GREATER THAN 0.667, CONSIDER REDUCING MAIN TIME INCR EMENT ***
PEAK TIM E(HRS) PEAK DISCHARGE(CFS) P EAK ELEVATION(FEET)
12.28 1004.49 (NULL)
TIME(HRS) F IRST HYDROGRAPH POINT = .00 HOURS TIME INCREMENT = .08 HOURS DRAINAGE AREA = .39 SQ.M
6.40 DISCHG .00 .00 .00 .01 .01 .01 .01 .01 .01 .01
7.20 DISCHG .01 .01 .01 .02 .02 .02 .02 .02 .02 .03
8.00 DISCHG .03 .03 .03 .03 .03 .04 .04 .11 1.22 2.07
8.80 DISCHG 2.69 3.17 3.54 3.83 4.06 4.28 4.52 4.77 5.01 5.22
9.60 DISCHG 5.42 5.61 5.83 6.09 6.35 6.59 6.80 7.01 7.24 7.51
10.40 DISCHG 7.82 8.20 8.68 9.21 9.83 10.86 12.97 16.73 22.00 28.08
11.20 DISCHG 34.52 41.13 47.77 54.38 61.14 68.58 79.57 100.97 138.50 218.61
12.00 DISCHG 358.31 570.42 818.07 988.57 991.52 879.19 741.09 608.82 497.21 416.06
12.80 DISCHG 353.73 301.92 261.24 229.94 205.15 185.04 168.21 156.90 148.30 139.71
13.60 DISCHG 131.42 123.63 116.33 109.55 103.49 98.20 93.51 89.35 85.58 82.11
14.40 DISCHG 78.90 75.91 73.06 70.36 67.78 65.26 62.83 60.57 58.52 56.69
15.20 DISCHG 55.10 53.71 52.51 51.42 50.32 49.15 47.98 46.87 45.84 44.92
16.00 DISCHG 44.10 43.39 42.78 42.25 41.80 41.42 41.09 40.81 40.56 40.25
16.80
17.60 DISCHG
DISCHG 39.77
34.44 39.15
34.18 38.46 37.77
33.97 33.78 37.11
33.58 36.51
33.26 35.98
32.77 35.51
32.15 35.10
31.49 34.74
30.84
18.40 DISCHG 30.23 29.67 29.18 28.74 28.37 28.04 27.77 27.53 27.34 27.17
19.20 DISCHG 27.03 26.91 26.81 26.73 26.66 26.60 26.55 26.50 26.47 26.40
20.00 DISCHG 26.18 25.78 25.23_ 24.63 24.03 23.46 22.94 22.48 22.07 21.72
20.80 DISCHG 21.41 21.15 20.93 20.75 20.59 20.45 20.34 20.25 20.17 20.10
21.60 DISCHG 20.05 20.00 19.96 19.93 19.90 19.87 19.85 19.84 19.82 19.81
22.40 DISCHG 19.80 19.79 19.78 19.78 19.77 19.77 19.76 19.76 19.76 19.76
23.20 DISCHG 19.76 19.76 19.75 19.75 19.75 19.75 19.75 19.75 19.75 19.71
RUNOFF VOLUME ABOV E BASEFLOW 4.71 WATERSHED INCHES, 12 00.74 CFS- HRS, 99.23 ACRE-FEET; BASEFLOW = 00 CFS
.
OPERATION RUNOFF CROSS SECTION 16
OUTPUT HYDROGRAPH= 6
AREA= .14 SQ MI INPUT RUNOFF CURVE= 83. TI 14E OF CONCENTRATION= .17 HOURS
INTERNAL HYDROGRAPH TIME INCREMENT= .0227 HOURS
PEAK TIME (HRS) PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET)
12.00 530.23 (RUNOFF)
15.17 15.64 (RUNOFF)
16.44 13.49 (RUNOFF)
17.65 11.26 (RUNOFF)
19.65 9.04 (RUNOFF)
23.64 6.82 (RUNOFF)
i
TR20 XEQ 9/23/99 GRANDOVER (WEST) COMMERCIAL- POST-DEV. W/PONDS 50 YR, 09/23/99 20 JOB 1
REV 09/01/83 30
?TIME(HRS) FIRST HYDROGRAPH POINT = .00 HOURS TIME INCREMENT = .08 HOURS DRAINAGE AREA = .14 SQ.M
4.80 DISCHG .00 .00 .03 .09 .17 .24 .32 .40 .47 .55
5.60 DISCHG .62 .69 .77 .84 .91 .98 1.11 1.33 1.48 1.60
6.40 DISCHG 1.70 1.81 1.91 2.00 2.10 2.19 2.29 2.38 2.47 2.56
7.20 DISCHG 2.65 2.73 2.82 2.90 2.99 3.07 3.15 3.23 3.31 3.39
8.00 DISCHG 3.46 3.71 4.14 4.38 4.67 5.18 5.49 5.68 5.83 5.97
8.80 DISCHG 6.10 6.22 6.35 6.52 7.06 7.53 7.78 7.96 8.12 8.28
9.60 DISCHG 8.79 9.40 9.72 9.93 10.11 10.28 10.71 11.43 11.85 12.54
10.40 DISCHG 13.96 14.77 15.68 17.88 19.27 20.30 22.67 24.38 25.46 27.94
11.20 DISCHG 30.00 31.28 34.99 38.63 42.64 88.20 146.55 175.41 284.68 451
40
12.00 DISCHG 530.23 452.73 234.95 138.41 102.60 76.43 65.42 60.75 54.85 .
51.72
12.80 DISCHG 49.82 44.55 41.13 39.69 36.53 34.18 33.29 31.34 29.58 28.93
13.60 DISCHG 27.25 25.35 24.66 23.82 22.77 22.37 21.74 20.67 20.21 19.68
14.40 DISCHG 18.58 18.05 17.60 16.49 15.88 15.69 15.64 15.62 15.62 15.63
15.20 DISCHG 15.63 15.57 14.69 13.83 13.55 13.46 13.43 13.43 13.43 13.44
16.00 DISCHG 13.44 13.44 13.45 13.45 13.45 13.46 13.46 13.18 12.10 11.50
16.80 DISCHG 11.31 11.26 11.24 11.24 11.24 11.24 11.24 11.25 11.25 11.25
17.60 DISCHG 11.25 11.25 11.24 10.59 9.58 9.19 9.07 9.03 9.02 9.02
18.40 DISCHG 9.02 9.02 9.02 9.02 9.02 9.02 9.03 9.03 9.03 9.03
19.20 DISCHG 9.03 9.03 9.03 9.04 9.04 9.04 9.04 9.02 8.37 7.36
20.00 DISCHG 6.96 6.84 6.80 6.79 6.79 6.79 6.79 6.79 6.79 6.79
20.80 DISCHG 6.79 6.79 6.79 6.79 6.79 6.80 6.80 6.80 6.80 6.80
21.60 DISCHG 6.80 6.80 6.80 6.80 6.80 6.80 6.80 6.80 6.80 6.81
22.40 DISCHG 6.81 6.81 6.81 6.81 6.81 6.81 6.81 6.81 6.81 6.81
23.20 DISCHG 6.81 6.81 6.81 6.82 6.82 6.82 6.82 6.80 6.14 5.12
RUNOFF VOLUME ABO VE BASEFLOW 4.74 WATERSHED INCHES, 428.14 CFS-HRS, 35 .38 ACRE-F EET; BAS EFLOW = 00 CFS
.
OPERATION ADDHYD CROSS SECTION 17
INPUT HYDROGRAPHS= 5,6 OUTPUT HYDROGRAPH= 7
* *ELEVATION OUTPUT OPTION REQUESTED BUT NO ELEVATIONS GIVEN***
PEAK TIM E(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET)
12.26 1128.95 (NULL)
23.64 26.57 (NULL)
.I ME(HRS) FIRST HYDROGRAP H POINT = .00 HOURS TIME INCREMENT = .03 HOURS DRAINAGE AREA = .53 SQ.M
® 4.80 DISCHG .00 .00 .03 .09 .17 .24 .32 .40 .47 .55
5.60 DISCHG 62 .69 .77 .84 .91 .98 1.11 1.33 1.48 1.60
6.40 DISCHG 1.70 1.81 1.91 2.01 2.11 2.20 2.29 2.39 2.48 2.57
7.20 DISCHG 2.66 2.75 2.83 2.92 3.00 3.09 3.17 3.25 3.33 3.41
8.00 DISCHG 3.49 3.74 4.17 4.42 4.70 5.21 5.53 5.79 7.06 8.03
8.80
9.60 DISCHG
DISCHG 8.79
14.21 9.40
15.01 9.89
15.55 10.35
16.02 11.13
16.46 11.81
16.86 12.30
17.51 12.73
18.44 13.13
19.08 13.50
20.06
10.40 DISCHG 21.78 22.97 24.36 27.08 29.10 31.17 35.64 41.11 47.46 56.02
11.20 DISCHG 64.51 72.42 82.77 93.01 103.78 156.78 226.13 276.38 423.17 670.01
1
d
j
S
TR20 XEQ 9/23/99 GRANDOVER (WEST) COMMERCIAL- POST-DEV. W/PONDS 50 YR, 09/23 /99 20 JOB 1
REV 09/01/83 30
12.00 DISCHG 888.54 1023.15 1053.02 1126.97 1094.11 955.62 806.51 669
57 552
06 467
78
12.80 DISCHG 403.55 346.47 302.36 269.63 241.68 219.22 201.50 .
188.23 .
177.88 .
168.64
13.60 DISCHG 158.66 148.99 141.00 133.37 126.26 120.57 115.25 110.02 105.80 101.79
14.40 DISCHG 97.48 93.96 90.66 86.85 83.66 80.95 78.47 76.19 74.14 72.32
t 15.20 DISCHG 70.73 69.28 67.20 65.25 63.86 62.61 61.42 60.30 59.27 58.35
16.00 DISCHG 57.54 56.84 56.22 55.70 55.25 54.87 54.55 53.99 52.66 51.75
16.80 DISCHG 51.08 50.40 49.70 49.00 48.35 47.75 47.22 46.75 46.34 45.99
17.60 DISCHG 45.69 45.44 45.21 44.37 43.16 42.45 41.84 41.18 40.51 39.85
18.40 DISCHG 39.24 38.69 38.20 37.76 37.39 37.07 36.79 36.56 36.37 36.20
19.20 DISCHG 36.06 35.94 35.84 35.76 35.69 35.64 35.59 35.53 34.84 33.75
20.00
20.80 DISCHG
DISCHG 33.15
28.20 32.62
27.95 32.03
27.73 31.42
27.54 30.82
27.38 30.25
27.25 29.73
27.14 29.27
27.05 28.86
26.97 28.51
26.90
21.60 DISCHG 26.85 26.80 26.76 26.73 26.70 26.68 26.66 26.64 26.63 26.62
22.40 DISCHG 26.61 26.60 26.59 26.59 26.58 26.58 26.58 26.57 26.57 26.57
23.20 DISCHG 26.57 26.57 26.57 26.57 26.57 26.57 26.57 26.55 25.89 24.83
RUNOFF VOLUME ABOVE BASEFLOW = 4.72 WATERSHED INCHES, 1628.88 CFS -HRS, 134 .61 ACRE-FEET; BASEFLOW .00 CFS
O PERATIO
N RESVOR STRUCTURE 18
INPUT HYDROGRAPH= 7 OUTPUT HYDROGRAP H= 1
SURFACE ELEVATION= 753.50
PEAK TIME(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET)
12.43 915.33 760.40
TIME(HRS) F IRST HYDROGRAPH POINT .00 HOURS TIME INCREMENT = .08 HOURS DRAINAGE AREA = .53 SQ.M
4.80
4.80 DISCHG
ELEV .00
753.50 .00
753.50 .00
753.50 .00
753.50 .00
753.50 .00
753.50 .01
753.50 .01
753.50 .01
753.51 .02
753.51
5.60 DISCHG .02 .03 .03 .04 .04 .05 .06 .07 .08 .09
5.60 ELEV 753.51 753.51 753.52 753.52 753.52 753.53 753.53 753.54 753.54 753.55
6.40 DISCHG .10 .12 .13_ .15 .16 .18 .19 .21 .23 .25
6.40 ELEV 753.55 753.56 753.57 753.58 753.58 753.59 753.60 753.61 753.62 753.63
7.20 DISCHG .27 .29 .31 .33 .35 .37 .39 .41 .44 .46
7.20 ELEV 753.64 753.65 753.66 753.67 753.68 753.69 753.71 753.72 753.73 753.74
8.00 DISCHG .48 .51 .54 .57 .60 .63 .67 .71 .76 .81
8.00 ELEV 753.75 753.77 753.78 753.80 753.82 753.83 753.85 753.87 753.90 753.93
8.80 DISCHG .87 .94 1.03 1.13 1.24 1.35 1.47 1.59 1.71 1.84
8.80 ELEV 753.96 753.99 754.02 754.05 754.08 754.12 754.15 754.19 754.22 754.26
9.60 DISCHG 1.97 2.11 2.25 2.40 2.55 2.70 2.80 2.91 3.02 3.14
9.60 ELEV 754.30 754.34 754.38 754.42 754.47 754.51 754.56 754.61 754.66 754.71
10.40 DISCHG 3.26 3.40 3.54 3.70 5.62 8.72 11.84 15.20 18.88 23.03
10.40 ELEV 754.77 754.83 754.90 754.97 755.03 755.09 755.15 755.21 755.28 755.35
11.20 DISCHG 27.74 34.14 43.55 53.14 62.94 77.51 102.73 135.68 189.65 278.32
11.20 ELEV 755.44 755.53 755.63 755.72 755.82 755.97 756.18 756.44 756.81 757.35
1 12.00 DISCHG 408.50 547.57 677.39 786.59 872.33 912.70 904.33 860.32 794.28 719.02
12.00 ELEV 758.06 758.72 759.32 759.81 760.21 760.39 760.35 760.15 759.85 759.51
12.80 DISCHG 644.03 572.83 507.09 451.61 402.86 357.39 318.28 286.96 261.62 240.07
12.80 ELEV 759.16 758.84 758.54 758.27 758.03 757.79 757.58 757.40 757.25 757.13
13.60 DISCHG 221.43 204.13 188.86 175.51 163.71 153.30 144.16 137.11 130.63 124.67

I
TR20 XEQ 9/23/99
REV 09/01/83
GRANDOVER (WEST) COMMERCIAL- POST-DEV. W/PONDS 50 YR, 09/23/99
20 JOB 1
30
13.60 ELEV 757.02 756.90 756.80 756.71 756.63 756.56 756.50 756
45 756.40 756
35
14.40 DISCHG 119.12 113.93 109.13 104.61 100.31 96.32 92.63 .
89.24 86.12 .
83.26
14.40 ELEV 756.31 756.26 756.23 756.19 756.16 756.13 756.10 756.07 756.05 756.02
15.20 DISCHG 80.65 78.34 76.15 74.00 71.96 70.07 68.33 66.71 65.21 63.83
15.20 ELEV 756.00 755.98 755.96 755.94 755.91 755.90 755.88 755.86 755.85 755.83
16.00 DISCHG 62.55 61.39 60.34 59.39 58.55 57.79 57.12 56.51 55.82 55.04
16.00 ELEV 755.82 755.81 755.80 755.79 755.78 755.77 755.76 755.76 755.75 755.74
16.80 DISCHG 54.25 53.49 52.75 52.01 51.29 50.59 49.92 49.28 48.69 48.14
16.80 ELEV 755.73 755.73 755.72 755.71 755.70 755.70 755.69 755.68 755.68 755.67
17.60 DISCHG 47.65 47.20 46.79 46.36 45.80 45.15 44.50 43.85 43.20 42.55
17.60 ELEV 755.67 755.66 755.66 755.65 755.65 755.64 755.64 755.63 755
62 755
62
18.40 DISCHG 41.90 41.26 40.65 40.07 39.53 39.04 38.58 38.17 .
37.80 .
37.47
18.40 ELEV 755.61 755.60 755.60 755.59 755.59 755.58 755.58 755.57 755.57 755.56
19.20 DISCHG 37.18 36.93 36.70 36.51 36.34 36.19 36.07 35.96 35.79 35.47
19.20 ELEV 755.56 755.56 755.56 755.55 755.55 755.55 755.55 755.55 755.55 755.54
20.00 DISCHG 35.03 34.56 34.08 33.57 33.04 32.50 31.96 31.42 31.01 30.71
20.00 ELEV 755.54 755.53 755.53 755.52 755.52 755.51 755.51 755.50 755.50 755.49
20.80 DISCHG 30.42 30.12 29.83 29.55 29.29 29.04 28.81 28.59 28.39 28.20
20.80 ELEV 755.49 755.48 755.48 755.47 755.47 755.46 755.46 755.45 755.45 755.45
21.60 DISCHG 28.04 27.88 27.74 27.62 27.50 27.40 27.31 27.22 27.15 27.08
21.60 ELEV 755.44 755.44 755.44 755.44 755.43 755.43 755.43 755.43 755.43 755.43
22.40 DISCHG 27.02 26.97 26.92 26.88 26.84 26.81 26.78 26.75 26.73 26.71
22.40 ELEV 755.42 755.42 755.42 755.42 755.42 755.42 755.42 755.42 755.42 755.42
23.20 DISCHG 26.69 26.68 26.66 26.65 26.64 26.63 26.62 26.62 26.57 26.41
23.20 ELEV 755.42 755.42 755.42 755.42 755.42 755.42 755.42 755.42 755.42 755.41
RUNOFF VOLUME ABOVE BASEFLOW 4.58 WATERSHED INCHES, 1580.24 CFS-H RS, 130. 59 ACRE-FEET; BASEFLOW = .00 CFS
IXECUTIVE
CONTROL OPERATION ENDCMP COMPUTATIONS COMPLETED FOR PASS 1 RECORD
I XECUTIVE CONTROL OPERATION ENDJOB RECORD

D
TR20 XEQ 9/23/99 GRANDOVER (WEST) COMME RCIAL- POST-DEV. W/PONDS 50 YR, 09/23/99 20 JOB 1
REV 09/01/83 30
SUMMARY TABLE 1 - SEL ECTED RESULTS OF STANDARD AND EXECUTIVE CONTROL INSTRUCTI ONS IN THE ORDER PERFORMED
(A STAR(*) AFTER THE PEAK DISCHARGE TIME AND RATE (CFS) VALU ES INDICATES A FLAT TOP HYDROGRAPH
A QUESTION MARK(?) INDICATES A HYDROGRAPH WITH PEAK AS LAST POINT.)
SECTION/ STANDARD RAIN ANTEC MAIN PRECIPITATION PEAK D ISCHARGE
STRUCTURE CONTROL DRAINAG E TABLE MOIST TIME ------ ------------------ - RUNOFF ------- ----------- -----------
ID OPERATION AREA # COND INCREM BEGIN AMOUNT DURATIO N AMOUNT ELEVATI ON TIME RATE
(SQ MI) (HR) (HR) (IN) (HR) (IN) (FT) (HR) (CFS)
ALTER2JATE 1 STORM 1
SECTION 1 RUNOFF .24 2 2 .08 .0 6.70 24.00 5.51 --- 12.04 925.13
STRUCTURE 16 RESVOR .24 2 2 .08 .0 6.70 24.00 4.90 801.26 12.14 743.77
SECTION 3 REACH. .24 2 2 .08 .0 6.70 24.00 4.90 --- 12.14 743.77
SECTION 4 RUNOFF .03 2 2 .08 .0 6.70 24.00 5.51 --- 12.03 97.75
STRUCTURE 17 RESVOR .03 2 2 .08 .0 6.70 24.00 4.82 817.57 12.13 79.42
SECTION 6 REACH .03 2 2 .08 .0 6.70 24.00 4.82 --- 12.13 79.42
SECTION 7 RUNOFF .03 2 2 .08 .0 6.70 24.00 4.96 --- 12.00 117.69
XSECTION 8 ADDHYD .05 2 2 .08 .0 6.70 24.00 4.90 --- 12.04 182.77
TRUCTURE 1 RESVOR .05 2 2 .08 .0 6.70 24.00 4.33 801.21 12.23 102.78
SECTION 10 REACH .05 2 2 .08 .0 6.70 24.00 4.33 --- 12.23 102.78
SECTION 11 ADDHYD .29 2 2 .08 .0 6.70 24.00 4.80 --- 12.15 841.59
SECTION 12 RUNOFF .10 2 2 .08 .0 6.70 24.00 4.62 --- 12.05 338.62
SECTION 13 ADDHYD .39 2 2 .08 .0 6.70 24.00 4.75 --- 12.11 1132.41
STRUCTURE
SECTION 15
15 RESVOR
REACH .39
.39 2
2 2
2 .08
.08 .0
.0 6.70
6.70 24.00
24.00 4.72
4.71 774.36
--- 12.20
12.28 1005.12
1004.49
XSECTION 16 RUNOFF .14 2 2 .08 .0 6.70 24.00 4.74 --- 12.00 530.23
SECTIO14 17 ADDHYD .53 2 2 .08 .0 6.70 24.00 4.72 --- 12.26 1128.95
?
TRUCTURE 18 RESVOR .53 2 2 .08 .0 6.70 24.00 4.58 760.40 12.43 915.33

1

1
-I
TR20 XEQ 9/23/99 GRANDOVER (WEST) COMMERCIAL- POST-DEV. W/PONDS 50 YR, 09/23/99 20 JOB 1
REV 09/01/83 30
SUMMARY TABLE 2 - SELECTED MODIFIED ATT-KIN REACH ROUTINGS IN ORDER OF STANDARD EXECUTIVE CONTROL INSTRUCTIONS
(A STAR(*) AFTER VOLUME ABOVE BASE(IN) INDICATES A HYDROGRAPH TRUNCATED AT A VALUE EXCEEDING BASE + 10
A QUESTION MARK(?) AFTER COEFF.(C) INDICATES PARAMETERS OUTSIDE ACCEPTABLE LIMITS, SEE PREVIOUS WARNI
HYDROGRAPH INFORMATION ROUTING PARAMETERS
OUTFLOW+ VOLU14E MAIN ITER- Q AND A PEAK S/Q ATT-
XSEC REACH INFLOW OUTFLOW INTERV.AREA BASE- ABOVE TIME ATION EQUATION LENGTH RATIO ©PEAK KIN
ID LENGTH PEAK TIME PEAK TIME PEAK TIME FLOW BASE INCR # COEFF POWER FACTOR 0/I (K) COEFF
(FT) (CFS) (HR) (CFS) (HR) (CFS) (HR) (CFS) (IN) (HR) (X) (M) (K*) (Q*) (SEC) (C)
ALTERNATE 1 STORM 1
3 1350 741 12.2 741 12.2 --- --- 0 4.90 .08 0 1.60 1.45 .007 1.000 87 1.00?
6 800 78 .12.2 78 12.2 --- --- 0 4.82 .08 0 1.60 1.44 .011 1.000 106 1.00?
10 800 103 12.2 103 12.2 --- --- 0 4.33 .08 0 1.60 1.44 .005 1.000 97 1.00?
15 1200 992 12.2 992 12.3 --- --- 0 4.72 .08 1 .850 1.38 .014 1.000 146 .99?

TR20 XEQ 9/23/99 GRANDOVER (WEST) COMMERCIAL- POST-DEV. W/PONDS 50 YR, 09/23/99 20 JOB 1
1 REV 09/01/83 30
'SUMMARY TABLE 3 - DISCHARGE (CFS) AT XSECTIONS AND STRUCTURES FOR ALL STORMS AND ALTERNATES
XSECTION/ DRAINAGE
TRUCTURE AREA STORM NUMBERS..........
ID (SQ MI) 1
® XSECTION 13 .39
ALTERNATE 1 1132.41
XSECTION 15 .39
® ALTERNATE 1 1004.49
XSECTION 16 .14
ALTERNATE 1 530.23
XSECTION 17 .53
ALTERNATE 1 1128.95
1
END OF 1 JOBS IN THIS RUN
Stop - Program terminated.
a

7
TR20 XEQ 9/23/99 GRANDOVER (WEST) COMMERCIAL- POST-DEV. W/PONDS 50 YR, 09/23/99
REV 09/01/83
NSUMMARY TABLE 3 - DISCHARGE (CFS) AT XSECTIONS AND STRUCTURES FOR ALL STORMS AND ALTERNATES
XSECTION/ DRAINAGE
TRUCTURE AREA STORM NUMBERS..........
ID (SQ MI) 1
STRUCTURE 18 .53
ALTERNATE 1 915.33
STRUCTURE 17 .03
ALTERNATE 1 79.42
STRUCTURE 16 .24
ALTERNATE 1 743.77
STRUCTURE 15 .39
ALTERNATE 1 1005.12
STRUCTURE 1 .05
ALTERNATE 1 102.78
XSECTION 1 .24
ALTERNATE 1 925.13
XSECTION 3 .24
ALTERNATE
XSEC 1 743.77
TION 4 .03
ALTERNATE 1 97.75
SECTION 6 .03
ALTERNATE 1 79.42
}{SECTION 7 .03
ALTERNATE 1 117.69
SECTION 8 .05
ALTERNATE 1 182.77
SECTION 10 .05
I ALTERNATE 1 102.78
SECTION 11 .29
1 ALTERNATE 1 841.59
XSECTION 12 .10
ALTERNATE 1 338.62
20 JOB 1
30
Fr]
d
J
d

?tl

F,

7
Ill

J
J
7
100 YEAR STORM

**x*****x#++++****+xx+xx*+++++*++*#*++##*##*ixx###+####***+#*#*+#*+****++#*+*#x+
* * TR 20 SIN
* * HMVersion 3.40
* TR 20 * Date 9/23/99
* * Time 9:20:52
* Project Formulation Hydrology * Input file GDVR100B.t20
* Output file GDVR100B.out
* *
xx#x***xxx##*x#*#****+xx#*x#x*+****+*x++#***++x**+*x#* x
++x**+x##***+x+x+xxxx+*+*+

s

XXXXXXX XXXXXX XXXXX XXXXX
X X X X X X XX
X X X X X X X
X XXXXXX X X X X
® X X X X X X X
® X X X X XX X
X X X XXXXXXX XXXXX

Full Microcomputer Implementation
by -
Haestad Methods, Inc.
37 Brookside Road * Waterbury, Connecticut 06708 * [phone]
7

********* *********80-80 LIST OF INPUT DATA FOR T R-20 HYDROLOGY******************
JOB TR-20 FULLPRINT 10
TITLE 001 GRANDOVER (WEST) COMMERCIAL -POST -DEV. W/PONDS 100 YR, 09/23/99 20
,TITLE
3 STRUCT
15 30
40
8 770.86 0.00 0.00 50
8 771.00 0.04 0.419 60
8 772.00 162.00 3.477 70
8 773.00 458.21 6.654 80
8 774.00 841.78 9.951 90
8 775.00 1296.00 13.370 100
8 775.65 1735.68 16.891 110
8 120
9 ENDTBL 140
3 STRUCT 16 141
8 795.5 0.00 0.00 170
8 796.0 0.30 1.440 171
8 797.1 0.53 4.699 172
8 797.5 0.59 5.917 173
8 797.9 0.65 7.151 174
8 798.0 4.45 7.462 175
8 798.5 56.50 9.035 176
8 799.0 129.23 10.635 177
8 800.0 366.07 13.916 178

8 801.0 655.96 17.308 179
8 802.0 997.28 20.812 180
8 181
8 182
9 ENDTBL 251
3 STRUCT 17 252
8 814.0 0.00 0.00 253
8 815.0 0.24 0.505 254
8 815.7 0.31 0.884 255
8 816.0 5.26 1.053 256
8 816.5 21.84 1.343 257
8 817.0 44.88 1.645 258
8 818.0 105.11 2.284 259
8 819.0 180.37 2.970 260
8 820.0 368.08 3.705 261
9 ENDTBL 262
3 STRUCT 18 270

1
8 753.50 0.00 0.00 271
8 754.00 0.95 0.78 272
8 754.50 2.67 1.81 273
755.00 3.77 2.83 274
755.50 31.14 4.17 275
8 756.00 80.33 5.51 276
1
r?

III

**************** ******80-80 LIST OF INPUT DATA (CONTINUED)** ************* *******
8
756.50 143.75 7.19 277
8 757.00 218.66 8.86 278
8 757.50 303.52 10.88 279
8 758.00 397.25 12.90 280
8 758.50 499.09 15.27 281
8 759.00 608.43 17.64 282
9 ENDTBL 283
3 STRUCT 01 290
B 798.50 0.00 0.00 291
8 799.00 0.10 0.70 292
8 799.50 0.68 1.54 293
8 800.00 16.87 2.38 294
8 800.50 46.18 3.39 295
8 801.00 84.03 4.39 296
8 801.50 128.80 5.53 297
8 802.00 179.55 6.67 298

8 802.50 235.63 8.01 299
8 803.00 402.66 9.34 300
8 803.50 662.04 10.93 301
8 804.00 982.86 12.51 302
9 ENDTBL 303
6 RUNOFF 1 001 1 0.24 90.00 0.251 1 1 1 360
6 RESVOR 2 16 1 2 795.5 1 1 1 1 1 370
6 REACH 3 003 2 3 1350.00 1.6 1.451 1 1 1 380
6 RUNOFF 1 004 4 0.025 90.00 0.231 1 1 1 390
6 RESVOR 2 17 4 5 814.00 1 1 1 1 1 391
6 REACH 3 006 5 6 800.00 1.6 1.441 1 1 1 392
6 RUNOFF 1 007 7 0.03 85.0 0.171 1 1 1 393
6 ADDHYD 4 008 7 6 5 1 1 1 1 1 394
6 RESVOR 2 01 5 4 798.50 1 1 1 1 1 395
6 REACH 3 010 4 6 800.0 1.6 1.441 1 1 1 396
6 ADDHYD 4 011 6 3 1 1 1 1 1 1 397
6 RUNOFF 1 012 2 0.10 82.0 0.251 1 1 1 398
6 ADDHYD 4 013 1 2 3 _ 1 1 1 1 1 399
6 RESVOR 2 15 3 4 770.86 1 1 1 1 1 400
6 REACH 3 015 4 5 1200.00 0.85 1.381 1 1 1 401
6 RUNOFF 1 016 6 0.14 83.00 0.171 1 1 1 402
6 ADDHYD 4 017 5 6 7 1 1 1 1 1 403
6 RESVOR 2 18 7 1 753.50 1 1 1 1 1 404
ENDATA 450
7 I14CREM 6 0.08 460
7 COMPUT 7 001 1 8 0.0 7.5 1.02 2 0 1 01 470
ENDCMP 1 480
ENDJOB 2 490
***********+ ***+** **+* *****+* **END OF 80-80 LIST+**.*:* **:**** *:+* **.*.*+**:.**.

TR20 XEQ 9/23/99 GRANDOVER (WEST) COMMERCIAL-POST-DEV. W/PONDS 100 YR, 09/23/99 20 JOB 1
REV 09/01/83 30
FILE NO. 1
COMPUTER PROGRAM FOR PROJECT FORMULATION - HYDROLOGY USER NOTES
THE USERS MANUAL FOR THIS PROGRAM IS THE MAY 1982 DRAFT OF TR-20. CHANGES FROM THE 2/14/74 VERSION INCLUD
REACH ROUTING - THE MODIFIED ATT-KIN ROUTING PROCEDURE REPLACES THE CONVEX METHOD. INPUT DATA PREPARED FO
PREVIOUS PROGRAM VERSIONS USING CONVEX ROUTING COEFFICIENTS WILL NOT RUN ON THIS VERSION.
THE PREFERRED TYPE OF DATA ENTRY IS CROSS SECTION DATA REPRESENTATIVE OF A REACH. IT IS RECOMMENDED TH
THE OPTIONAL CROSS SECTION DISCHARGE-AREA PLOTS BE OBTAINED WHENEVER NEW CROSS SECTION DATA IS ENTERED.
THE PLOTS SHOULD BE CHECKED FOR REASONABLENESS AND ADEQUACY OF INPUT DATA FOR THE COMPUTATION OF "M"
VALUES USED IN THE ROUTING PROCEDURE.
GUIDELINES FOR DETERMINING OR ANALYZING REACH LENGTHS AND COEFFICIENTS (X,M) ARE AVAILABLE IN THE USERS
MANUAL. SUMMARY TABLE 2 DISPLAYS REACH ROUTING RESULTS AND ROUTING PARAMETERS FOR COMPARISON AND CHECK
HYDROGRAPH GENERATION - THE PROCEDURE TO CALCULATE THE INTERNAL TIME INCREMENT AND PEAK TIME OF THE UNIT
HYDROGRAPH HAVE BEEN IMPROVED. PEAK DISCHARGES AND TIMES MAY DIFFER FROM THE PREVIOUS VERSION. OUTPUT
HYDROGRAPHS ARE STILL INTERPOLATED, PRINTED, AND ROUTED AT THE USER SELECTED MAIN TIME INCREMENT.
INTERMEDIATE PEAKS - METHOD ADDED TO PROVIDE DISCHARGES AT INTERMEDIATE POINTS WITHIN REACHES WITHOUT ROUT
OTHER - THIS VERSION CONTAINS SOME ADDITIONS TO THE INPUT AND NUMEROUS MODIFICATIONS TO THE OUTPUT. USER
OPTIONS HAVE BEEN MODIFIED AND AUGMENTED ON THE JOB RECORD, RAINTABLES ADDED, ERROR AND WARNING MESSAGE
EXPANDED, AND THE SUMMARY TABLES COMPLETELY REVISED. THE HOLDOUT OPTION IS NOT OPERATIONAL AT THIS TIM
PROGRAM QUESTIONS OR PROBLEMS SHOULD BE DIRECTED TO HYDRAULIC ENGINEERS AT THE SCS NATIONAL TECHNICAL CENT
CHESTER, PA (NORTHEAST) -- 215-499-3933, FORT WORTH, TX (SOUTH) -- 334-5242 (FTS)
LINCOLN, NB (MIDWEST) -- 541-5318 (FTS), PORTLAND, OR (WEST) -- 423-4099 (FTS)
OR HYDROLOGY UNIT, ENGINEERING-DIVISION, LANHAM, MD -- 436-7383 (FTS).
PROGRAM CHANGES SINCE MAY 1982:
12/17/82 - CORRECT PEAK RATE FACTOR FOR USER ENTERED DIMHYD
CORRECT REACH ROUTING PEAK TRAVEL TI14E PRINTED WITH FULLPRINT OPTION
5/02/83 - CORRECT COMPUTATIONS FOR ---
1. DIVISION OF BASEFLOW IN DIVERT OPERATION
2. HYDROGRAPH VOLUME SPLIT BETWEEN BASEFLOW AND ABOVE BASEFLOW
3. CROSS SECTION DATA PLOTTING POSITION
4. INTERMEDIATE PEAK WHEN "FROM" AREA IS LARGER THAN "THRU" AREA
5. STORAGE ROUTED REACH TRAVEL TIME FOR MULTIPEAK HYDROGRAPH
6. ORDERING "FLOW-FREQ" FILE FROM SUMMARY TABLE #3 DATA
7. BASEFLOW ENTERED WITH READHYD
8. LOW FLOW SPLIT DURING DIVERT PROCEDURE #2 WHEN SECTION RATINGS START AT DIFFERENT E
ENHANCEMENTS ---
1. REPLACE USER MAI4UAL ERROR CODES (PAGE 4-9 TO 4-11) WITH MESSAGES
2. LABEL OUTPUT HYDROGRAPH FILES WITH CROSS SECTION/STRUCTURE, ALTERNATE AND STORM NO'
09101/13 - CORRECT INPUT AND OUTPUT ERRORS FOR INTERMEDIATE PEAKS
CORRECT COMBINATION OF RATING TABLES FOR DIVERT
CHECK REACH ROUTING PARAMETERS FOR ACCEPTABLE LIMITS
ELIMINATE MINIMUM REACH TRAVEL TIME WHEN ATT-KIN COEFFICIENT EQUALS ONE
L
0

0
r.

u

r,
?Y
TR20 XEQ 9/23/99 GRANDOVER (WEST) COMMERCIAL-POST-DEV. W/PONDS 100 YR, 09/23/99 20 JOB 1
REV 09/01/83 30
RUNOFF VOLU14E ABOVE BASEFLOW = 6.29 WATERSHED INCHES, 974.44 CFS-HRS, 80.53 ACRE-FEET; BASEFLOW = .00 CFS
PERATION RESVOR STRUCTURE 16
INPUT HYDROGRAPH= 1 OUTPUT HYDROGRAPH= 2
SURFACE ELEVATION= 795.50
PEAK TIME(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET)
12.14 853.28 801.58
ZME(HRS) FIRST HYDROGRAPH POINT = .00 HOURS TIME INCREMENT = .08 HOURS DRAINAGE AREA = .24 SQ.M
3.20 DISCHG .00 .01 .01 .01 .01 .01 .02 .02 .02 .02
3.20
4.00 ELEV
DISCHG 795.50
.03 795.51
.03 795.51
.04 795.51
.04 795.52
.05 795.52
.05 795.53
.06 795.53
.07 795.54
.07 795.54
.08
4.00 ELEV 795.55 795.56 795.56 795.57 795.58 795.59 795.60 795.61 795.62 795.64
4.80 DISCHG .09 .10 .10 .11 .12 .13 .14 .15 .15 .16
4.80 ELEV 795.65 795.66 795.67 795.69 795.70 795.71 795.73 795.74 795.76 795.77
5.60 DISCHG .17 .18 .19 .20 .21 .22 .23 .25 .26 .27
5.60 ELEV 795.79 795.81 795.82 795.84 795.86 795.87 795.89 795.91 795.93 795.95
6.40 DISCHG .29 .30 .31 .31 .32 .32 .33 .33 .34 .34
6.40 ELEV 795.98 796.00 796.03 796.05 796.07 796.10 796.13 796.15 796.18 796.20
7.20 DISCHG .35 .35 .36 .37 .37 .38 .38 .39 .40 .40
7.20 ELEV 796.23 796.26 796.29 796.32 796.34 796.37 796.40 796.43 796.46 796.49
8.00 DISCHG 41 .42 .42 .43 .44 .44 .45 .46 .47 .48
8.00 ELEV 796.52 796.55 796.58 796.62 796.65 796.69 796.73 796.78 796.82 796.87
8.80 DISCHG .49 .50 .51 .52 .53 .54 .55 .55 .56 .57
B.80 ELEV 796.92 796.96 797.01 797.06 797.11 797.16 797.21 797.26 797.32 797.37
9.60 DISCHG .58 .59 .60 .61 .62 .63 .64 .65 2.36 5.56
9.60 ELEV 797.43 797.49 797.55 797.61 797.68 797.74 797.81 797.88 797.95 798.01
10.40
10.40 DISCHG
ELEV 11.73
798.07 17.20
798.12 22.06
798.17 26.56
798.21 30.98
798.25 35.24
798.30 39.37
798.34 43.56
798.38 47.70
798.42 51.76
798.45
11.20 DISCHG 55.93 61.33 66.72 72.45 78.84 91.37 122.02 191.87 283.53 426.49
11.20 ELEV 798.49 798.53 798.57 798.61 798.65 798.74 798.95 799.26 799.65 800.21
12.00 DISCHG 629.41 812.96 847.60 729.73 571.97 438.50 337.25 268.83 217.95 180.62
12.00 ELEV 800.91 801.46 801.56 801.22 800.71 800.25 799.88 799.59 799.37 799.22
12.80 DISCHG 153.73 134.21 122.31 113.29 105.22 97.84 91.16 85.32 80.09 75.40
12.80 ELEV 799.10 799.02 798.95 798.89 798.83 798.78 798.74 798.70 798.66 798.63
13.60 DISCHG 71.25 67.39 63.70 60.40 57.46 55.23 53.41 51.66 49.93 48.28
13.60 ELEV 798.60 798.57 798.55 798.53 798.51 798.49 798.47 798.45 798.44 798.42
14.40 DISCHG 46.68 45.08 43.53 42.02 40.49 39
00 37
67 36
55 62
35 86
34
14.40 ELEV 798.41 798.39 798.38 798.36 798.35 .
798.33 .
798.32 .
798.31 .
798.30 .
798.29
15.20 DISCHG 34.25 33.75 33.26 32.62 31.86 31.08 30.38 29.79 29.29 28.89
15.20 ELEV 798.29 798.28 798.28 798.27 798.26 798.26 798.25 798.24 798.24 798.23
16000 DISCHG 28.57 28.31 28.10 27.93 27.79 27.69 27.60 27.51 27.29 26.84
16.00 ELEV 798.23 798.23 798.23 798.23 798.22 798.22 798.22 798.22 798.22 798.22
16.80 DISCHG 26.25 25.65 25.12 24.66 24.29 23.98 23.74 23.54 23.38 23.25
16.80 ELEV 798.21 798.20 798.20 798.19 798.19 798.19 798.19 798.18 798.18 798.18
17.60 DISCHG 23.15 23.07 23.00 22.88 22.59 22.07 21.47 20.90 20.40 19.98
17.60 ELEV 798.18 798.18 798.18 798.18 798.17 798.17 798.16 798.16 798.15 798.15

0
TR20 XEQ 9/23/99
REV 09/01/83
18.40 DISCHG 19.64 19.35 19.13 18.94
18.40 ELEV 798.15 798.14 798.14 798.14
19.20 DISCHG 18.36 18.33 18.31 18.29
19.20
20.00 ELEV
DISCHG 798.13
17.43 798.13
16.85 798.13
16.30 798.13
15.81
20.00 ELEV 798.12 798.12 798.11 798.11
20.80 DISCHG 14.13 14.04 13.97 13.91
20.80 ELEV 798.09 798.09 798.09 798.09
21.60 DISCHG 13.72 13.71 13.70 13.70
21.60 ELEV 798.09 798.09 798.09 798.09
22.40 DISCHG 13.68 13.68 13.68 13.68
22.40 ELEV 798.09 798.09 798.09 798.09
23.20 DISCHG 13.68 13.68 13.68 13.68
23.20 ELEV 798.09 798.09 798.09 798.09
RUNOFF VOLUME ABOVE BASEFLOW 5.69 WATERSHED INCHES,
GRANDOVER (WEST) COMMERCIAL-POST-DEV. W/PONDS 100 YR, 09/23/99
20 JOB 1
30
18.80 18.68 18.58 18.51 18.45 18.40
798.14 798.14 798.14 798.14 798.13 798.13
18.27 18.26 18.25 18.24 18.17 17.91
798.13 798.13 798.13 798.13 798.13 798.13
15.40 15.06 14.79 14.57 14.39 14.25
798.11 798.10 798.10 798.10 798.10 798.09
13.86 13.82 13.79 13.77 13.75 13.73
798.09 798.09 798.09 798.09 798.09 798.09
13.69 13.69 13.68 13.68 13.68 13.68
798.09 798.09 798.09 798.09 798.09 798.09
13.68 13.68 13.68 13.68 13.68 13.68
798.09 798.09 798.09 798.09 798.09 798.09
13.68 13.68 13.68 13.68 13.61 13.36
798.09 798.09 798.09 798.09 798.09 798.09
880.80 CFS-HRS, 72 .79 ACRE-FEET; BASEFLOW = .00 CFS
1PERATION REACH CROSS SECTION 3
INPUT HYDROGRAPH= 2 OUTPUT HYDROGRAPH= 3
LENGTH = 1350.00 FEET INPUT = COEFFICIENTS RELATED TO CROSS SECTIONAL AREA, X= 1.60, M= 1.45
MODIFIED ATT-KIN ROUTING COEFFICIENT = 1.00 PEAK TRAVEL TIME _ .00 HOURS
*** WARNING REACH 3 ATT-KIN COEFF.(C) GREATER THAN 0.667, CONSIDER REDUCING MAIN TIME INCREMENT ***
PEAK TIME(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET)
12.14 853.28 (NULL)
T IME(HRS) FIRST HYDROGRAPH POINT = .00 HOURS TIME INCR EMENT = .08 HOURS DRAINAGE AREA = .24 SQ.M
3.20
4.00 DISCHG
DISCHG 00
.03 01
.03 .01
.04- .01
.04 .01
.05 .01
.05 .02
.06 .02
.07 .02
.07 .02
.08
4.80 DISCHG .09 .10 .10 .11 .12 .13 .14 .15 .15 .16
5.60 DISCHG .17 .18 .19 .20 .21 .22 .23 .25 .26 .27
6.40 DISCHG .29 .30 .31 .31 .32 .32 .33 .33 .34 .34
7.20 DISCHG .3S .35 .36 .37 .37 .38 .38 .39 .40 .40
8.00 DISCHG .41 .42 .42 .43 .44 .44 .45 .46 .47 .48
8.80 DISCHG .49 .50 .51 .52 .53 .54 .55 .55 .56 .57
9.60 DISCHG .58 .59 .60 .61 .62 .63 .64 .65 2.36 5.56
10.40 DISCHG 11.73 17.20 22.06 26.56 30.98 35.24 39.37 43.56 47.70 51.76
11.20
12.00 DISCHG
DISCHG 55.93
629.41 61.33
812.96 66.72
847.60 72.45
729.73 78.84
571.97 91.37
438.50 122.02
337.25 191.87
268.83 283.53
217.95 426.49
180.62
12.80 DISCHG 153.73 134.21 122.31 113.29 105.22 97.84 91.16 85.32 80.09 75.40
13.60 DISCHG 71.25 67.39 63.70 60.40 57.46 55.23 53.41 51.66 49.93 48.28
14.40 DISCHG 46.68 45.08 43.53 42.02 40.49 39.00 37.67 36.55 35.62 34.86
15.20 DISCHG 34.25 33.75 33.26 32.62 31.86 31.08 30.38 29.79 29.29 28.89
16.00 DISCHG 28.57 28.31 28.10 27.93 27.79 27.69 27.60 27.51 27.29 26.84
16.80 DISCHG 26.25 25.65 25.12 24.66 24.29 23.98 23.74 23.54 23.38 23.25
17.60 DISCHG 23.15 23.07 23.00 22.88 22.59 22.07 21.47 20.90 20.40 19.98
18.40 DISCHG 19.64 19.35 19.13 18.94 18.80 18.68 18.58 18.51 18.45 18.40
19.20 DISCHG 18.36 18.33 18.31 18.29 18.27 18.26 18.25 18.24 18.17 17.91
L

TR20 XEQ 9/23/99 GRANDOVER (WEST) COMMERCIAL- POST-DEV. W/PONDS 100 YR, 09/23/99 20 JOB 1
REV 09/01/83 30
20.00 DISCHG 17.43 16.85 16.30 15.81 15.40 15.06 14.79 14.57 14.39 14.25
20.80 DISCHG 14.13 14.04 13.97 13.91 13.86 13.82 13.79 13.77 13.75 13.73
21.60 DISCHG 13.72 13.71 13.70 13.70 13.69 13.69 13.68 13.68 13.68 13.68
22.40
23.20 DISCHG
DISCHG 13.68
13.68 13.68
13.68 13.68
13.68 13.68
13.68 13.68
13
68 13.68
13
68 13.68
13
68 13.68
13
68 13.68
13
61 13.68
13
36
. . . . . .
RUNOFF VOLUME ABOVE BASEFLOW = 5.69 WATERSHED INCHES, 880.80 CFS-HRS, 72.7 9 ACRE-F EET; BASE FLOW .00 CFS

OPERATION RUNOFF CROSS SECTION 4
OUTPUT HYDROGRAPH= 4
AREA= .03 SQ MI INPUT RUNOFF CURVE= 90. TIME OF CONCENTRATION= .23 HOURS
INTERNAL HYDROGRAPH TIME INCREMENT= .0307 HOURS
PEAK TIM E(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATION (FEET)
12.03 110.75 (RUNOFF)
IME(HRS) F IRST HYDROGRAPH POINT = .00 HOURS TIME INCREMENT = .08 HOURS DRAINAGE AREA = .03 SQ.M
2.40 DISCHG .00 .00 .00 .00 .01 .02 .04 .05 .07 .09
3.20 DISCHG .10 .12 .14 .15 .17 .18 .20 .21 .24 .29
4.00 DISCHG .33 .37 .39 .42 .44 .46 .49 .51 .53 .55
4.80 DISCHG .57 .59 .61 .63 .65 .66 .68 .70 .72 .73
5.60 DISCHG .75 .76 .78 .79 .81 .83 .87 .96 1.04 1.09
6.40 DISCHG 1.12 1.14 1.17 1.19 1.21 1.22 1.24 1.26 1.28 1
29
7.20 DISCHG 1.31 1.33 1.34 1.36 1.37 1.39 1.40 1.42 1.43 .
1.44
8.00 DISCHG 1.46 1.51 1.63 1.73 1.81 1.95 2.08 2.14 2.19 2.21
8.80 DISCHG 2.24 2.26 2.28 2.31 2.41 2.55 2.64 2.69 2.73 2.76
9.60 DISCHG 2.84 3.00 3.11 3.17 3.21 3.23 3.30 3.46 3.59 3.73
10.40 DISCHG 4.03 4.30 4.52 4.96 5.40 5.70 6.16 6.65 6.96 7.42
11.20 DISCHG 7.95 8.31 8.94 9.81 10.68 17.14 29.84 39.04 54.82 85.73
12.00
12.80 DISCHG
DISCHG 108.56
11.02 106.58
10.15 73.15
9.25_ 43.54
8.75 29.71
8.19 21.55
7.61 16.75
7.27 14.45
6.93 12.78
6.52 11.61
6.28
13.60 DISCHG 6.00 5.62 5.36 5.19 4.97 4.82 4.70 4.51 4.36 4.25
14.40 DISCHG 4.06 3.90 3.80 3.62 3.45 3.37 3.33 3.32 3.31 3.31
15.20 DISCHG 3.31 3.30 3.19 3.02 2.91 2.87 2.85 2.84 2.84 2.84
16.00 DISCHG 2.84 2.84 2.84 2.84 2.84 2.84 2.84 2.81 2.66 2.50
16.80 DISCHG 2.42 2.39 2.38 2.37 2.37 2.37 2.37 2.37 2.37 2.37
17.60 DISCHG 2.37 2.37 2.37 2.29 2.12 1.99 1.94 1.91 1.90 1.90
18.40 DISCHG 1.90 1.90 1.90 1.90 1.90 1.90 1.90 1.90 1.90 1.90
19.20 DISCHG 1.90 1.90 1.90 1.90 1.90 1.90 1.90 1.89 1.82 1.65
20.00
20.80 DISCHG
DISCHG 1.52
1.42 1.46
1.42 1.44
1.42 1.43
1.42 1.43
1.42 1.42
1.42 1.42
1.42 1.42
1.42 1.42
1.42 1.42
1.42
21.60 DISCHG 1.42 1.42 1.42 1.42 1.42 1.42 1.42 1.42 1.42 1.42
22.40 DISCHG 1.42 1.42 1.42 1.42 1.42 1.42 1.42 1.42 1.42 1.42
23.20 DISCHG 1.42 1.42 1.42 1.43 1.43 1.43 1.43 1.42 1.35 1.18
RUNOFF VOLUME ABOV E BASEFLOW 6.30 WATERSHED INCHES, 1 01.59 CFS- HRS, 8.40 ACRE-FEET; BASEFLOW = .00 CFS

OPERATION RESVOR STRUCTURE 17

TR20 XEQ 9/23/99 GRANDOVER (WEST) COMMERCIAL- POST-DEV. W/PONDS 100 YR, 09/23 /99 20 JOB 1
REV 09/01/83 30
INPUT HYDROGRAPH= 4 OUTPUT HYDROGRAP H= 5
SURFACE ELEVATION= 814.00
PEAK TIM
12.12 E(IRS) PEAK DISCHARGE(CFS)
90.63 PEAK ELEVATI
817
76 ON(FEET)
.
TIME(HRS) F IRST HYDROGRAPH POINT = .00 HOURS TIME INCR EMENT = .08 HOURS DRAINAGE AREA = .03 SQ.M
3.20 DISCHG .00 .00 .00 .00 .00 .00 .00 .00 .01 .01
3.20 ELEV 814.00 814.00 814.00 814.00 814.00 814.00 814.00 814.00 814.02 814.02
4.00 DISCHG .01 .01 .01 .01 .01 .01 .01 .02 .02 .02
4.00 ELEV 814.03 814.03 814.04 814.04 814.05 814.05 814.06 814.07 814.07 814.08
4.80 DISCHG .02 .02 .02 .03 .03 .03 .03 .03 .04 .04
4.80 ELEV 814.09 814.09 814.10 814.11 814.12 814.13 814.13 814.14 814.15 814.16
5.60
5.60 DISCHG
ELEV 04
814.17 .04
814.18 .05
814.19 .05
814.20 .05
814.21 .05
814.22 .05
814.23 .06
814.24 .06
814.25 .06
814.27
6.40 DISCHG .07 .07 .07 .08 .08 .08 .09 .09 .10 .10
6.40 ELEV 814.28 814.29 814.31 814.32 814.34 814.35 814.37 814.38 814.40 814.41
7.20 DISCHG 10 .11 .11 .11 .12 .12 .13 .13 .13 .14
7.20 ELEV 814.43 814.44 814.46 814.48 814.49 814.51 814.53 814.54 814.56 814.58
8.00 DISCHG .14 .15 .15 .16 .16 .17 .17 .18 .18 .19
8.00 ELEV 814.59 814.61 814.63 814.65 814.67 814.69 814.72 814.74 814.77 814.79
8.80 DISCHG .20 .20 .21 .22 .22 .23 .24 .24 .25 .25
8.80 ELEV 814.82 814.85 814.88 814.90 814.93 814.96 814.99 815.02 815.05 815.08
9.60 DISCHG .25 .25 .26 .26 .27 .27 .27 .28 .28 .28
9.60 ELEV 815.11 815.15 815.18 815.21 815.25 815.29 815.32 815.36 815.40 815.44
10.40 DISCHG .29 .29 .30 .30 .31 1.20 2.03 2.80 3.51 4.16
10.40 ELEV 815.49 815.53 815.58 815.64 815.70 815.75 815.80 815.85 815.89 815.93
11.20 DISCHG 4.78 5.47 6.47 7.39 8.30 10.09 14.35 20.73 30.99 47.16
11.20 ELEV 815.97 816.01 816.04 816.06 816.09 816.15 816.27 816.47 816.70 817.04
12.00 DISCHG 70.91 88.33 89.06 74.47 56.49 42.29 32.97 25.97 21.17 18.32
12.00
12.80 ELEV
DISCHG 817.43
16.09 817.72
14.34 817.73
12.86- 817.49
11.64 817.19
10.63 816.94
9.76 816.74
9.02 816.59
8.41 816.48
7.88 816.39
7.41
12.80 ELEV 816.33 816.27 816.23 816.19 816.16 816.14 816.11 816.10 816.08 816.06
13.60 DISCHG 7.00 6.62 6.26 5.95 5.67 5.43 5.23 5.12 5.00 4.88
13.60 ELEV 816.05 816.04 816.03 816.02 816.01 816.01 816.00 815.99 815.98 815.98
14.40 DISCHG 4.75 4.62 4.48 4.34 4.20 4.06 3.93 3.83 3.74 3.66
14.40 ELEV 815.97 815.96 815.95 815.94 815.94 815.93 815.92 815.91 815.91 815.90
15.20 DISCHG 3.60 3.55 3.49 3.42 3.34 3.26 3.19 3.13 3.08 3.04
15.20 ELEV 815.90 815.90 815.89 815.89 815.88 815.88 815.87 815.87 815.87 815.87
16.00 DISCHG 3.00 2.97 2.95 2.93 2.91 2.90 2.89 2.88 2.85 2.80
16.00
16.80 ELEV
DISCHG 815.86
2.74 815.86
2.68 815.86
2.63 815.86
2.59 815.86
2.55 815.86
2.52 815.86
2.49 815.86
2.47 815.85
2.45 815.85
2.44
16.80 ELEV 815.85 815.84 815.84 815.84 815.84 815.83 815.83 815.83 815.83 815.83
17.60 DISCHG 2.42 2.41 2.41 2.39 2.36 2.31 2.25 2.19 2.14 2.10
17.60 ELEV 815.83 815.83 815.83 815.83 815.82 815.82 815.82 815.81 815.81 815.81
18.40 DISCHG 2.06 2.03 2.01 1.99 1.97 1.96 1.95 1.94 1.93 1.92
18.40 ELEV 815.81 815.80 815.80 815.80 815.80 815.80 815.80 815.80 815.80 815.80
19.20 DISCHG 1.92 1.92 1.91 1.91 1.91 1.91 1.90 1.90 1.89 1.87
19.20 ELEV 815.80 815.80 815.80 815.80 815.80 815.80 815.80 815.80 815.80 815.79
20.00 DISCHG 1.82 1.76 1.71 1.66 1.62 1.58 1.55 1.53 1.51 1.50
E l
EA
TR20 XEQ 9/23/99 GRANDOVER (WEST) COMMERCIAL-POST-DEV. W/PONDS 100 YR, 09/23/99 20 JOB 1
REV 09/01/83 30
20.00 ELEV 815.79 815.79 815.78 815.78 815.78 815.78 815.78 815.77 815.77 815.77
20.80 DISCHG 1.48 1.47 1.46 1.46 1.45 1.45 1.44 1.44 1.44 1.43
20.80 ELEV 815.77 815.77 815.77 815.77 815.77 815.77 815.77 815.77 815.77 815.77
21.60
21.60 DISCHG
ELEV 1.43
815.77 1.43
815.77 1.43
815.77 1.43
815.77 1.43
815.77 1.43
815.77 1.43
815.77 1.43
815.77 1.43
815.77 1.43
815.77
22.40 DISCHG 1.43 1.43 1.43 1.43 1.42 1.42 1.42 1.42 1.42 1.42
22.40 ELEV 815.77 815.77 815.77 815.77 815.77 815.77 815.77 815.77 815.77 815.77
23.20 DISCHG 1.42 1.42 1.42 1.42 1.42 1.42 1.42 1.42 1.42 1.39
23.20 ELEV 815.77 815.77 815.77 815.77 815.77 815.77 815.77 815.77 815.77 815.77
RUNOFF VOLUME ABOVE BASEFLOW = 5.60 WATERSHED INCH ES, 90.33 CFS- HRS, 7.47 ACRE-FEET; BASEFLOW = .00 CFS
PERATION REACH CROSS SECTION 6
INPUT HY DROGRAPH= 5 OUTPUT HYDROGRAPH= 6
LENGTH = 800.00 FEET INPUT = COEFF ICIENTS RELATED TO CROSS SE CTIONAL AREA, X= 1.60, M= 1.44
MODIFIED ATT-KIN ROUTI NG COEFFICIENT = 1.00 PEAK TRAVEL TIME _ .00 HOURS
*** WARNING REACH 6 ATT-KIN COEFF.(C) GREATER THAN 0.667, CONSIDER REDUCING MAIN TIME INCREMENT ***
PEAK TIME(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET)
12.12 90.63 (NULL)
IME(HRS) FIRST HYDROGRAPH POINT = .00 HOURS TIME INCR EMENT = .08 HOURS DRAINAGE AREA = .03 SQ.M
3.20 DISCHG .00 .00 .00 .00 .00 .00 .00 .00 .01 .01
4.00 DISCHG .01 .01 .01 .01 .01 .01 .01 .02 .02 .02
4.80 DISCHG .02 .02 .02 .03 .03 .03 .03 .03 .04 .04
5.60 DISCHG .04 .04 .05 .05 .05 .05 .05 .06 .06 .06
6.40 DISCHG 07 .07 .07 .08 .08 .08 .09 .09 .10 .10
7.20
8.00 DISCHG
DISCHG .10
.14 .11
.15 .11
.15- .11
.16 .12
.16 .12
.17 .13
.17 .13
.18 .13
.18 .14
.19
8.80 DISCHG .20 .20 .21 .22 .22 .23 .24 .24 .25 .25
9.60 DISCHG .25 .25 .26 .26 .27 .27 .27 .28 .28 .28
10.40 DISCHG .29 .29 .30 .30 .31 1.20 2.03 2.80 3.51 4.16
11.20 DISCHG 4.78 5.47 6.47 7.39 8.30 10.09 14.35 20.73 30.99 47.16
12.00 DISCHG 70.91 88.33 89.06 74.47 56.49 42.29 32.97 25.97 21.17 18.32
12.80 DISCHG 16.09 14.34 12.86 11.64 10.63 9.76 9.02 8.41 7.88 7.41
13.60 DISCHG 7.00 6.62 6.26 5.95 5.67 5.43 5.23 5.12 5.00 4.88
14.40 DISCHG 4.75 4.62 4.48 4.34 4.20 4.06 3.93 3.83 3.74 3.66
15.20
16.00 DISCHG
DISCHG 3.60
3.00 3.55
2.97 3.49
2.95 3.42
2.93 3.34
2.91 3.26
2.90 3.19
2.89 3.13
2.88 3.08
2.85 3.04
2.80
16.80 DISCHG 2.74 2.68 2.63 2.59 2.55 2.52 2.49 2.47 2.45 2.44
17.60 DISCHG 2.42 2.41 2.41 2.39 2.36 2.31 2.25 2.19 2.14 2.10
18.40 DISCHG 2.06 2.03 2.01 1.99 1.97 1.96 1.95 1.94 1.93 1.92
19.20 DISCHG 1.92 1.92 1.91 1.91 1.91 1.91 1.90 1.90 1.89 1.87
20.00 DISCHG 1.82 1.76 1.71 1.66 1.62 1.58 1.55 1.53 1.51 1.50
20.80 DISCHG 1.48 1.47 1.46 1.46 1.45 1.45 1.44 1.44 1.44 1.43
21.60 DISCHG 1.43 1.43 1.43 1.43 1.43 1.43 1.43 1.43 1.43 1.43
22.40 DISCHG 1.43 1.43 1.43 1.43 1.42 1.42 1.42 1.42 1.42 1.42
23.20 DISCHG 1.42 1.42 1.42 1.42 1.42 1.42 1.42 1.42 1.42 1.39
F_ I
F,_'-?
XEQ 9/23/99 GRANDOVER (WEST) COMMERCIAL-POST-DEV. W/PONDS 100 YR, 09/23/99 20 JOB 1
REV 09/01/83 30
RUNOFF VOLUME ABOVE BASEFLOW = 5.60 WATERSHED INCHES, 90.33 CFS-HRS, 7.47 ACRE-FEET; BASEFLOW .00 CFS
OPERATION RUNOFF CROSS SECTION 7
OUTPUT HYDROGRAPH= 7
AREA= 03 SQ MI INPUT RUNOFF CURVE= 85. TIME OF CONCENTRATION= .17 HOURS
INTERNAL HYDROGRAPH TIME INCREMENT= .0227 HOURS
PEAK TIME(HRS) PEAK DISCHARGE(CFS)
12.00 134.73
TIME(HRS) FIRST HYDROGRAPH POINT = .00 HOURS
4.00 DISCHG .00 .01 .03
4.80 DISCHG .21 .23 .26
5.60 DISCHG .42 .43 .45
6.40 DISCHG .75 .78 .80
7.20 DISCHG 99 1.01 1.03
8.00 DISCHG 1.18 1.26 1.39
8.80 DISCHG 1.94 1.97 2.00
9.60 DISCHG 2.66 2.83 2.92
10.40 DISCHG 4.05 4.27 4.52
11.20 DISCHG 8.33 8.65 9.63 1
12.00 DISCHG 134.72 114.13 59.02 3
12.80 DISCHG 12.37 11.05 10.20
13.60 DISCHG 6.74 6.27 6.10
14.40 DISCHG 4.59 4.46 4.35
15.20 DISCHG 3.86 3.84 3.62
16.00 DISCHG 3.31 3.31 3.31
16.80 DISCHG 2.79 2.77 2.77
17.60 DISCHG 2.77 2.77 2.77
18.40 DISCHG 2.22 2.22 2.22-
19.20 DISCHG 2.22 2.22 2.22
20.00 DISCHG 1.71 1.68 1.67
20.80 DISCHG 1.67 1.67 1.67
21.60 DISCHG 1.67 1.67 1.67
22.40 DISCHG 1.67 1.67 1.67
23.20 DISCHG 1.67 1.67 1.67
RUNOFF VOLUME ABOVE BASEFLOW 5.72 WATERSHED INCHES,
PEAK ELEVATION(FEET)
(RUNOFF)
TIME INCREMENT = .08 HOURS DRAINAGE AREA = .03 SQ.M
.05 .08 .10 .12 .15 .17 .19
.28 .30 .32 .34 .36 .38 .40
.47 .49 .51 .56 .64 .69 .73
.83 .85 .87 .90 .92 .94 .96
1.05 1.07 1.09 1.11 1.13 1.14 1.16
1.46 1.55 1.70 1.80 1.85 1.88 1.91
2.04 2.20 2.34 2.40 2.45 2.48 2.52
2.97 3.01 3.05 3.16 3.36 3.47 3.66
5.13 5.50 5.77 6.42 6.87 7.14 7.80
0.58 11.63 23.83 39.21 46.44 74.23 116.09
4.65 25.61 19.04 16.28 15.11 13.63 12.85
9.84 9.06 8.47 8.24 7.76 7.32 7.16
5.89 5.63 5.53 5.37 5.11 4.99 4.86
4.07 3.92 3.87 3.86 3.86 3.86 3.86
3.41 3.34 3.32 3.31 3.31 3.31 3.31
3.31 3.31 3.32 3.32 3.25 2.98 2.83
2.77 2.77 2.77 2.77 2.77 2.77 2.77
2.61 2.36 2.26 2.23 2.22 2.22 2.22
2.22 2.22 2.22 2.22 2.22 2.22 2.22
2.22 2.22 2.22 2.22 2.22 2.06 1.81
1.67 1.67 1.67 1.67 1.67 1.67 1.67
1.67 1.67 1.67 1.67 1.67 1.67 1.67
1.67 1.67 1.67 1.67 1.67 1.67 1.67
1.67 1.67 1.67 1.67 1.67 1.67 1.67
.67 1.67 1.67 1.67 1.67 1.51 1.26
110.83 CFS-HRS, 9.16 ACRE-FEET; BASE FLOW = 1
.00 CFS
OPERATION ADDHYD CROSS SECTION 8
INPUT HYDROGRAPHS= 7,6 OUTPUT HYDROGRAPH= 5
*ELEVATION OUTPUT OPTION REQUESTED BUT NO ELEVATIONS GIVEN***
PEAK TIME(HRS)
12.03
PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET)
209.85 (NULL)

i?

TR20 XEQ 9/23/99 GRANDOVER (WEST) COMMERCIAL-POST-DEV. W/PONDS 100 YR, 09/23/99 20
REV 09/01/83 30
9TIME(HRS) FIRST HYDROGRAPH POINT
3.20 DISCHG .00 .00
4.00 DISCHG .01 .02
4.80 DISCHG .23 .26
5.60 DISCHG .46 .48
6.40 DISCHG .82 .85
7.20 DISCHG 1.09 1.11
8.00 DISCHG 1.32 1.40
8.80 DISCHG 2.14 2.18
9.60 DISCHG 2.91 3.09
10.40 DISCHG 4.34 4.56
11.20 DISCHG 13.12 14.12
12.00
12.80 DISCHG
DISCHG 205.63
28.46 202.46
25.39
13.60 DISCHG 13.75 12.90
14.40 DISCHG 9.34 9.07
15.20 DISCHG 7.45 7.39
16.00 DISCHG 6.31 6.29
16.80 DISCHG 5.53 5.46
17.60 DISCHG 5.19 5.18
18.40 DISCHG 4.28 4.25
19.20 DISCHG 4.14 4.14
20.00 DISCHG 3.53 3.44
20.80 DISCHG 3.15 3.14
21.60 DISCHG 3.10 3.10
22.40 DISCHG 3.10 3.10
23.20 DISCHG 3.10 3.10
.00 HOURS
.00 .00
.04 .06
.28 .30
.50 .52
.88 .91
1.14 1.16
1.54 1.62
2.21 2.26
3.17 3.23
4.81 5.43
16.10 17.98
148.08 109.11
23.07 21.48
12.36 11.84
8.83 8.42
7.12 6.84
6.26 6.24
5.40 5.35
5.17 5.00
4.23 4.21
4.13 4.13
3.38 3.33
3.13 3.13
3.10 3.10
3.10 3.10
3.10 3.10
TIME INCREMENT =
.00 .00
.09 .11
.33 .35
.54 .56
.93 .96
1.19 1.21
1.71 1.87
2.43 2.57
3.27 3.31
5.81 6.97
19.93 33.91
82.10 61.33
19.69 18.23
11.30 10.96
8.12 7.93
6.68 6.58
6.23 6.22
5.31 5.28
4.72 4.57
4.19 4.18
4.13 4.13
3.28 3.25
3.12 3.12
3.10 3.10
3.10 3.10
3.10 3.10
08 HOURS
.00
.14
.37
.61
.99
1.23
1.97
2.64
3.43
8.45
53.56
49.25
17.27
10.61
7.79
6.51
6.21
5.26
4.48
4.17
4.13
3.22
3.11
3.10
3.10
3.10
RUNOFF VOLUME ABOVE BASEFLOW = 5.67 WATERSHED INCHES, 201.16 CFS-HRS,
OPERATION RESVOR STRUCTURE 1
INPUT HYDROGRAPH= 5
SURFACE ELEVATION=
TIME(HRS)
5.60
5.60
6.40
6.40
7.20
7.20
8.00
8.00
8.80
8.80
PEAK TIME(HRS)
12.22
OUTPUT HYDROGRAPH= 4
798.50
PEAK DISCHARGE(CFS)
123.80
FIRST HYDROGRAPH POINT =
DISCHG .00 .00
ELEV 798.50 798.50
DISCHG .01 .01
ELEV 798.55 798.55
DISCHG .02 .02
ELEV 798.59 798.60
DISCHG .03 .03
ELEV 798.65 798.66
DISCHG .05 .05
ELEV 798.73 798.74
.00 HOURS
.O1 01
798.53 798.53
.01 .01
798.56 798.56
.02 .02
798.60 798.61
.03 .03
798.66 798.67
.05 .05
798.75 798.76
16.62 ACRE-FEET; BASEFLOW =
DRAINAGE AREA =
.00 .01
.16 .19
.39 .41
.70 .75
1.01 1.04
1.26 1.28
2.02 2.07
2.69 2.73
3.64 3.75
9.67 10.65
67.17 105.22
41.08 34.80
16.17 15.20
10.23 10.00
7.68 7.59
6.44 6.39
6.12 5.83
5.24 5.22
4.41 4.36
4.16 4.15
4.12 3.95
3.20 3.18
3.11 3.11
3.10 3.10
3.10 3.10
3.09 2.92
PEAK ELEVATION(FEET)
801.44
TIME INCREMENT = .
.O1 .O1
798.53 798.53
.01 .01
798.57 798.57
.02 .02
798.62 798.62
.04 .04
798.68 798.69
.06 .06
798.78 798.79
08 HOURS
.O1
798.54
.02
798.58
.03
798.63
.04
798.70
.06
798.80
DRAINAGE AREA =
.O1 .O1
798.54 798.54
.02 .02
798.58 798.58
.03 .03
798.63 798.64
.04 .04
798.70 798.71
.06 .06
798.81 798.82
JOB 1
05 SQ.M
.01
.21
.44
.79
1.06
1.30
2.10
2.77
3.94
11.96
163.26
31.16
14.57
9.74
7.52
6.35
5.64
5.20
4.31
4.14
3.67
3.16
3.10
3.10
3.10
2.65
00 CFS
.05 SQ.M
.O1
798.55
.02
798.59
.03
798.64
.04
798.72
.07
798.84

??l

TR20 XEQ 9/23/99 GRANDOVER (WEST) COMMERCIAL- POST-DEV. W/PONDS 100 YR, 09/23/ 99 20 JOB 1
REV 09/01/83 30
9.60 DISCHG .07 .07 .08 .08 .08 .08 .09 .09 .09 .10
9.60 ELEV 798.85 798.86 798.88 798.89 798.91 798.92 798.94 798.95 798.97 798.99
10.40 DISCHG .11 .13 .15 .17 .20 .22 .26 .30 .34 .39
10.40
11.20 ELEV
DISCHG 799.01
.45 799.02
.51 799.04
.57 799.06
.65 799.08
2.08 799.11
5.05 799.14
9.69 799.17
15.76 799.21
27.58 799.25
46.27
11.20 ELEV 799.30 799.35 799.41 799.47 799.54 799.64 799.78 799.97 800.18 800.50
12.00 DISCHG 77.00 105.96 121.89 123.43 117.04 106.62 94.83 83.43 73.31 64.34
12.00 ELEV 800.91 801.24 801.42 801.44 801.37 801.25 801.12 800.99 800.86 800.74
12.80 DISCHG 56.66 50.05 44.71 40.78 37.24 34.04 31.19 28.66 26.38 24.37
12.80 ELEV 800.64 800.55 800.47 800.41 800.35 800.29 800.24 800.20 800.16 800.13
13.60 DISCHG 22.58 20.96 19.50 18.21 17.05 16.28 15.62 15.00 14.41 13.87
13.60 ELEV 800.10 800.07 800.04 800.02 800.00 799.98 799.96 799.94 799.92 799.91
14.40 DISCHG 13.35 12.85 12.39 11.94 11.50 11.08 10.70 10.34 10.02 9.72
14.40
15.20 ELEV
DISCHG 799.89
9.45 799.88
9.21 799.86
8.98 799.85
8.74 799.83
8.50 799.82
8.28 799.81
8.07 799.80
7.88 799.79
7.70 799.78
7.54
15.20 ELEV 799.77 799.76 799.76 799.75 799.74 799.73 799.73 799.72 799.72 799.71
16.00 DISCHG 7.40 7.27 7.15 7.04 6.94 6.86 6.78 6.71 6.62 6.51
16.00 ELEV 799.71 799.70 799.70 799.70 799.69 799.69 799.69 799.69 799.68 799.68
16.80 DISCHG 6.40 6.29 6.19 6.09 6.00 5.92 5.84 5.77 5.70 5.64
16.80 ELEV 799.68 799.67 799.67 799.67 799.66 799.66 799.66 799.66 799.66 799.65
17.60 DISCHG 5.59 5.54 5.50 5.45 5.38 5.29 5.20 5.11 5.02 4.94
17.60 ELEV 799.65 799.65 799.65 799.65 799.65 799.64 799.64 799.64 799.63 799.63
18.40 DISCHG 4.86 4.79 4.72 4.66 4.61 4.56 4.51 4.47 4.43 4.40
18.40 ELEV 799.63 799.63 799.62 799.62 799.62 799.62 799.62 799.62 799.62 799.61
19.20 DISCHG 4.37 4.34 4.31 4.29 4.27 4.26 4.24 4.23 4.20 4.16
19.20 ELEV 799.61 799.61 799.61 799.61 799.61 799.61 799.61 799.61 799.61 799.61
20.00 DISCHG 4.09 4.02 3.94 3.87 3.81 3.74 3.68 3.62 3.57 3.52
20.00 ELEV 799.61 799.60 799.60 799.60 799.60 799.59 799.59 799.59 799.59 799.59
20.80 DISCHG 3.48 3.44 3.40 3.37 3.34 3.31 3.29 3.27 3.25 3.23
20.80 ELEV 799.59 799.59 799.58 799.58 799.58 799.58 799.58 799.58 799.58 799.58
21.60
21.60 DISCHG
ELEV 3.22
799.58 3.20
799.58 3.19
799.58_ 3.18
799.58 3.17
799.58 3.16
799.58 3.15
799.58 3.15
799.58 3.14
799.58 3.14
799.58
22.40 DISCHG 3.13 3.13 3.12 3.12 3.12 3.11 3.11 3.11 3.11 3.11
22.40 ELEV 799.58 799.58 799.58 799.58 799.58 799.58 799.58 799.58 799.58 799.57
23.20 DISCHG 3.11 3.10 3.10 3.10 3.10 3.10 3.10 3.10 3.09 3.05
23.20 ELEV 799.57 799.57 799.57 799.57 799.57 799.57 799.57 799.57 799.57 799.57
RUNOFF VOLUME ABOVE BASEFLOW = 5.09 WATERSHED INCH ES, 180.83 CFS- HRS, 14 .94 ACRE-FEET; BASEF LOW .00 CFS
OPERATION REACH CROSS SECTION 10

INPUT HY DROGRAPH= 4 OUTPUT H YDROGRAPH= 6
LENGTH = 800.00 FEET INPUT = COEFFICIENTS RELATED TO CROSS SECTIONAL AREA, X= 1.60 , M= 1. 44
® MODIFIED ATT-KIN ROUTING COEFFICIENT = 1.00 P EAK TRAVEL TIME _ .00 HOURS
*** WARNING REACH 10 ATT-KIN COEFF.(C) GREATER THAN 0.667, CONSIDER REDUCING MAIN TIME INCREMENT ***
PEAK TIME(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET)
12.22 123.80 (NULL)

TR20 XEQ 9/23/99 GRANDOVER (WEST) COMMERCIAL-POST-DEV. W/PONDS 100 YR, 09/23/99 20 JOB 1
REV 09/01/83 30
TIME(HRS) FIRST HYDROGRAPH POINT = .00 HOURS TIME INCREMENT = .08 HOURS DRAINAGE AREA = .05 SQ.M
5.60 DISCHG .00 .00 .01 .01 .01 .01 .01 .01 .01 .01
6.40
7.20 DISCHG
DISCHG 01
.02 O1
.02 .01
.02 .01
.02 .01
.02 .01
.02 .02
.03 .02
.03 .02
.03 .02
.03
8.00 DISCHG .03 .03 .03 .03 .04 .04 .04 .04 .04 .04
8.80 DISCHG .05 .05 .05 .05 .06 .06 .06 .06 .06 .07
9.60 DISCHG .07 .07 .08 .08 .08 .08 .09 .09 .09 .10
10.40 DISCHG .11 .13 .15 .17 .20 .22 .26 .30 .34 .39
11.20 DISCHG .45 .51 .57 .65 2.08 5.05 9.69 15.76 27.58 46.27
12.00 DISCHG 77.00 105.96 121.89 123.43 117.04 106.62 94.83 83.43 73.31 64.34
12.80 DISCHG 56.66 50.05 44.71 40.78 37.24 34.04 31.19 28.66 26.38 24.37
13.60 DISCHG 22.58 20.96 19.50 18.21 17.05 16.28 15.62 15.00 14.41 13.87
14.40
15.20 DISCHG
DISCHG 13.35
9.45 12.85
9.21 12.39
8.98 11.94
8.74 11.50
8.50 11.08
8.28 10.70
8.07 10.34
7.88 10.02
7.70 9.72
7.54
- 16.00 DISCHG 7.40 7.27 7.15 7.04 6.94 6.86 6.78 6.71 6.62 6.51
16.80 DISCHG 6.40 6.29 6.19 6.09 6.00 5.92 5.84 5.77 5.70 5.64
17.60 DISCHG 5.59 5.54 5.50 5.45 5.38 5.29 5.20 5.11 5.02 4.94
18.40 DISCHG 4.86 4.79 4.72 4.66 4.61 4.56 4.51 4.47 4.43 4.40
19.20 DISCHG 4.37 4.34 4.31 4.29 4.27 4.26 4.24 4.23 4.20 4.16
20.00 DISCHG 4.09 4.02 3.94 3.87 3.81 3.74 3.68 3.62 3.57 3.52
20.80 DISCHG 3.48 3.44 3.40 3.37 3.34 3.31 3.29 3.27 3.25 3.23
21.60 DISCHG 3.22 3.20 3.19 3.18 3.17 3.16 3.15 3.15 3.14 3.14
22.40 DISCHG 3.13 3.13 3.12 3.12 3.12 3.11 3.11 3.11 3.11 3.11
23.20 DISCHG 3.11 3.10 3.10 3.10 3.10 3.10 3.10 3.10 3.09 3.05
RUNOFF VOLUME ABOVE BASEFLOW 5.09 WATE RSHED INC HES, 180 .83 CFS-HRS, 14 .94 ACRE-FEET; BAS EFLOW .00 CFS

O PERATION ADDHYD CROSS SECTION 11
INPUT HYDROGRAPHS= 6,3 OUTPUT HYDROGR APH= 1
**ELEVATION OUTPUT OPTION REQUESTED BUT NO ELEVATIONS GIVEN***
PEAK TIME(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET)
12.14 972.73 (NULL)
TIME(HRS) FIRS T HYDROGRAPH POINT = .00 HOURS TIME INCREME NT = .08 HOURS DRAINAGE AREA = .29 SQ.M
3.20 DISCHG .00 .01 .01 .01 .01 .01 .02 .02 .02 .02
4.00 DISCHG .03 .03 .04 .04 .05 .05 .06 .07 .07 .08
4.80 DISCHG .09 .10 .10 .11 .12 .13 .14 .15 .15 .16
5.60 DISCHG .17 .18 .20 .21 .22 .23 24 25 27 28
6.40 DISCHG .30 .31 .32 .32 .33 .34 .
.34 .
.35 .
.35 .
.36
7.20 DISCHG .37 .37 .38 .39 .39 .40 .41 .42 .42 .43
8.00 DISCHG .44 .45 .45 .46 .47 .48 .49 .50 .51 .53
8.80 DISCHG .54 .55 .56 .57 .59 .60 .61 .62 .63 .64
9.60 DISCHG .65 .66 .67 .69 .70 .71 .72 .74 2.45 5.66
10.40 DISCHG 11.84 17.33 22.21 26.73 31.18 35.47 39.63 43.85 48.04 52.16
11.20 DISCHG 56.38 61.84 67.29 73.10 80.92 96.43 131.71 207.62 311.11 472.76
`-J

TR20 XEQ 9/23/99 GRANDOVER (WEST) CCMMERCIAL-P OST-DEV. W/PONDS 100 YR, 09/23 /99 20 JOB 1
REV 09/01/83 30
12.00 DISCHG 706.41 918.92 969.49 853.17 689.01 545.13 432.08 352.26 291.26 244.97
12.80 DISCHG 210.39 184.26 167.02 154.06 142.47 131.88 122.35 113.98 106.48 99.77
13.60 DISCHG 93.83 88.35 83.21 78.61 74.51 71.52 69.04 66.66 64.34 62.15
14.40 DISCHG 60.03 57.93 55.92 53.96 51.98 50.08 48
37 46
89 45
64 44
59
15.20 DISCHG 43.71 42.96 42.23 41.36 40.36 39.35 .
38.45 .
37.66 .
37.00 .
36.44
16.00 DISCHG 35.97 35.57 35.24 34.97 34.74 34.54 34.38 34.21 33.91 33.35
16.80 DISCHG 32.65 31.94 31.31 30.76 30.29 29.90 29.58 29.31 29.08 28.89
17.60 DISCHG 28.74 28.61 28.50 28.33 27.97 27.36 26.67 26.01 25.42 24.92
18.40 DISCHG 24.50 24.14 23.85 23.61 23.40 23.24 23.10 22.98 22.88 22.80
19.20 DISCHG 22.73 22.67 22.62 22.58 22.54 22.52 22.49 22.47 22.37 22.07
20.00 DISCHG 21.52 20.87 20.24 19.68 19.21 18.81 18.47 18.19 17.96 17.77
20.80 DISCHG 17.61 17.48 17.37 17.28 17.20 17.14 17.08 17.04 17.00 16.96
21.60 DISCHG 16.94 16.91 16.89 16.88 16.86 16.85 16.84 16.83 16.82 16.81
22.40 DISCHG 16.81 16.80 16.80 16.80 16.79 16.79 16.79 16
79 16
79 16
78
23.20 DISCHG 16.78 16.78 16.78 16.78 16.78 16.78 16.78 .
16.78 .
16.70 .
16.41
RUNOFF VOLUME ABOVE BASEFLOW 5.58 WATERSHED INCHES, 10 61.63 CFS-HRS, 87 .73 ACRE-F EET; BASE FLOW .00 CFS

O PERATION RUNOFF CROSS SECTION 12
OUTPUT HYDROGRAPH=
AREA= .10 SQ MI 2
INPUT RUNOFF CURVE=
82. TIME OF CON
CENTRATION=
.25 HOURS
INTERNAL HYDROGRAPH TIME INCREMENT= .0333 HOURS
PEAK TIM E(HRS) PEAK DISCHARGE(CFS) P EAK ELEVATION(FEET)
12.05 390.69 (RUNOFF)
16.44 10.83 (RUNOFF)
17.65 9.04 (RUNOFF)
19.65 7.26 (RUNOFF)
TIME(HRS) FIRST HYDROGRAPH POINT = .00 HOURS TIME INCREMENT =
08 HOURS DRAINAGE AREA = 10 SQ
M
. .
.
4.80 DISCHG .01 .05 .10- .16 .22 .28 .35 .41 .47 .53
5.60 DISCHG .59 .65 .71 .77 .83 .88 .97 1.11 1.26 1.38
6.40 DISCHG 1.47 1.56 1.65 1.73 1.81 1.88 1.96 2.03 2.11 2.18
7.20 DISCHG 2.25 2.32 2.39 2.46 2.53 2.59 2.66 2.73 2.79 2.85
8.00 DISCHG 2.91 3.04 3.30 3.56 3.79 4.11 4.43 4.66 4.81 4.94
8.80 DISCHG 5.06 5.16 5.27 5.38 5.66 6.04 6.33 6.53 6.68 6.82
9.60 DISCHG 7.07 7.50 7.86 8.10 8.28 8.43 8.67 9.11 9.55 10.00
10.40 DISCHG 10.81 11.65 12.36 13.61 14.97 16.00 17.39 18.95 20.13 21.60
11.20 DISCHG 23.36 24.75 26.73 29.50 32.57 49.88 88.43 122.25 174.86 276.94
12.00 DISCHG 370.12 382.21 283.38 176.08 119.86 86.79 67.11 56.72 49
70 44.72
12.80 DISCHG 41.84 38.77 35.43 33.32 31.30 29.08 27.66 26.40 .
24.93 23.91
13.60 DISCHG 22.93 21.51 20.46 19.76 18.97 18.37 17.91 17.22 16.62 16.19
14.40 DISCHG 15.53 14.92 14.50 13.86 13.20 12.84 12.68 12.61 12.58 12.57
15.20 DISCHG 12.57 12.53 12.20 11.60 11.16 10.95 10.87 10.83 10.81 10.80
16.00 DISCHG 10.80 10.80 10.81 10.81 10.81 10.81 10.82 10.72 10.23 9.63
16.80 DISCHG 9.30 9.15 9.08 9.05 9.04 9.03 9.03 9.04 9.04 9.04
17.60 DISCHG 9.04 9.04 9.03 8.80 8.21 7.69 7.45 7.34 7.28 7.26
18.40 DISCHG 7.25 7.25 7.25 7.25 7.25 7.25 7.25 7.25 7.25 7.25
19.20 DISCHG 7.26 7.26 7.26 7.26 7.26 7.26 7.26 7.25 7.02 6.43

TR20 XEQ 9/23/99 GRANDOVER (WEST) COMMERCIAL- POST-DEV. W/PONDS 100 YR, 09/23 /99 20 JOB 1
REV 09/01/83 30
20.00 DISCHG 5.91 5.66 5.54 5.49 5.47 5.46 5.45 5.45 5.45 5.45
20.80 DISCHG 5.45 5.46 5.46 5.46 5.46 5.46 5.46 5.46 5.46 5.46
21.60 DISCHG 5.46 5.46 5.46 5.46 5.46 5.46 5.46 5.46 5.46 5.47
22.40
23.20 DISCHG
DISCHG 5.47
5.47 5.47
5.47 5.47
5.47 5.47
5
47 5.47
5
47 5.47
5
47 5.47
5
47 5.47
5
46 5.47
5
23 5.47
4
63
. . . . . . .
RUNOFF VOLUME ABOV E BASEFLOW = 5.37 WATERSHED IN CHES, 346.26 CFS-HRS, 28 .62 ACRE-FEET; BASEFLOW = .00 CFS

OPERATION ADDHYD CROSS SECTION 13
INPUT HYDROGRAPHS= 1,2 OUTPUT HYDROGRAPH= 3
**ELEVATION OUTPUT OPTION REQUESTED BUT NO ELEVATIONS GIVEN***
PEAK TIME
12.11 (HRS) PEAK DISCHARGE(CFS)
1315.37 PEAK ELEVATION(FEET)
(NULL)
23.64 22.26 (NULL)
IME(HRS) FIRST HYDROG RAPH POINT = .00 HOURS TIME INCREMENT = .08 HOURS DRAINAGE AREA .39 SQ.M
3.20 DISCHG .00 .01 .01 .01 .01 .01 .02 .02 .02 .02
4.00 DISCHG .03 .03 .04 .04 .05 .05 .06 .07 .07 .08
4.80 DISCHG .10 .14 .20 .27 .34 .41 .48 .55 .62 .70
5.60 DISCHG .76 .83 .91 .98 1.05 1.11 1.21 1.36 1.53 1.66
6.40 DISCHG 1.77 1.87 1.96 2.05 2.13 2.22 2.30 2.38 2.46 2.54
7.20 DISCHG 2.62 2.70 2.77 2.85 2.92 3.00 3.07 3.14 3.21 3.28
8.00 DISCHG 3.35 3.49 3.76 4.03 4.26 4.59 4.92 5.16 5.33 5.47
8.80 DISCHG 5.60 5.71 5.83 5.96 6.25 6.63 6.94 7.14 7.31 7.45
9.60 DISCHG 7.72 8.16 8.54 8.79 8.98 9.14 9.39 9.85 12.00 15.65
10.40 DISCHG 22.65 28.98 34.57 40.35 46.15 51.46 57.02 62.81 68.17 73.75
11.20 DISCHG 79.74 86.59 94.02 102.60 113.49 146.31 220.14 329.87 485.96 749.69
12.00 DISCHG 1076.53 1301.12 1252.87 1029.24 808.87 631.92 499.18 408.98 340.97 289.69
12.80
13.60 DISCHG
DISCHG 252.23
116.76 223.03
109.85 202.45
103.67 187.39
98.37 173.76
93.48 160.96
89.88 150.01
86.95 140.37
83.88 131.41
80.96 123.68
78.34
14.40 DISCHG 75.57 72.85 70.42 67.82 65.19 62.92 61.05 59.50 58.22 57.16
15.20 DISCHG 56.28 55.50 54.43 52.96 51.51 50.31 49.31 48.49 47.81 47.24
16.00 DISCHG 46.77 46.38 46.05 45.78 45.55 45.36 45.20 44.94 44.13 42.99
16.80 DISCHG 41.94 41.09 40.39 39.81 39.33 38.94 38.61 38.34 38.12 37.93
17.60 DISCHG 37.78 37.65 37.53 37.13 36.18 35.06 34.12 33.34 32.71 32.18
18.40 DISCHG 31.75 31.39 31.10 30.85 30.65 30.49 30.35 30.23 30.13 30.05
19.20 DISCHG 29.98 29.93 29.88 29.84 29.80 29.78 29.75 29.72 29.39 28.49
20.00 DISCHG 27.42 26.53 25.79 25.18 24.68 24.26 23.93 23.65 23.42 23.23
20.80 DISCHG 23.07 22.94 22.83 22.73 22.66 22.59 22
54 22
49 22
46 42
22
21.60 DISCHG 22.40 22.37 22.35 22.34 22.32 22.31 .
22.30 .
22.29 .
22.29 .
22.28
22.40 DISCHG 22.27 22.27 22.27 22.26 22.26 22.26 22.26 22.26 22.26 22.25
23.20 DISCHG 22.25 22.25 22.25 22.25 22.25 22.25 22.25 22.24 21.93 21.05
RUNOFF V OLUME ABOVE BASEFLOW 5
52 WAT ERSHED INCH ES 07
. , 14 .89 CFS- HRS, 116.35 ACRE-FE ET; BASEFLOW .00 CFS

TR20 XEQ 9/23/99 GRANDOVER (WEST) COMMERCIAL- POST-DEV. W/PONDS 100 YR, 09/23 /99 20 JOB 1
REV 09/01/83 30

OPERATION RESVOR STRUCTURE 15
INPUT HYDROGRAPH= 3 OUTPUT HYDROGRAP H= 4
SURFACE ELEVATION= 770.86
PEAK TIM E(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATI ON(FEET)
12.19 1180.82 774.75
TIME(HRS) F IRST HYDROGRAPH POINT = .00 HOURS TIME INCR EMENT = .08 HOURS DRAINAGE AREA = .39 SQ.M
5.60 DISCHG .00 .00 .00 .00 .01 .01 .01 .01 .01 .01
5.60 ELEV 770.86 770.86 770.86 770.86 770.88 770.88 770.88 770.89 770.89 770.89
6.40 DISCHG .01 .01 .01 .01 .02 .02 .02 .02 .02 .02
6.40 ELEV 770.90 770.90 770.91 770.91 770.91 770.92 770.92 770
93 770
93 770
94
7.20 DISCHG .02 .03 .03 .03 .03 .03 .04 .
.04 .
.04 .
.51
7.20 ELEV 770.95 770.95 770.96 770.96 770.97 770.98 770.98 770.99 771.00 771.00
8.00 DISCHG 1.35 1.97 2.46 2.89 3.26 3.61 3.95 4.28 4.56 4.81
8.00 ELEV 771.01 771.01 771.01 771.02 771.02 771.02 771.02 771.03 771.03 771.03
8.80 DISCHG 5.03 5.21 5.38 5.53 5.70 5.92 6. 18 6.44 6.67 6.88
8.80 ELEV 771.03 771.03 771.03 771.03 771.03 771.04 771.04 771.04 771.04 771.04
9.60
9.60 DISCHG
ELEV 7.09
771.04 7.35
771.05 7.64
771.05 7.95
771.05 8.23
771.05 8.47
771.05 8.71
771.05 8.98
771.06 9.56
771.06 10.83
771.07
10.40 DISCHG 13.31 17.04 21.43 26.21 31.29 36.51 41.79 47.19 52.64 58.10
10.40 ELEV 771.08 771.10 771.13 771.16 771.19 771.23 771.26 771.29 771.32 771.36
11.20 DISCHG 63.66 69.47 75.68 82.42 90.06 101.93 126.15 175.46 284.99 441.83
11.20 ELEV 771.39 771.43 771.47 771.51 771.56 771.63 771.78 772.05 772.42 772.94
12.00 DISCHG 700.71 984.70 1163.10 1149.65 1008.91 833.63 684.70 556.58 456.08 389.76
12.00 ELEV 773.63 774.31 774.71 774.68 774.37 773.98 773.59 773.26 772.99 772.77
12.80 DISCHG 333.78 288.47 252.79 225.52 204.34 186.92 172.10 160.37 153.08 145.47
12.80 ELEV 772.58 772.43 772.31 772.21 772.14 772.08 772.03 771.99 771.94 771.90
13.60 DISCHG 137.94 130.60 123.50 116.80 110.58 104.95 100.02 95
67 91
72 88
12
13.60 ELEV 771.85 771.81 771.76_ 771.72 771.68 771.65 771.62 .
771.59 .
771.57 .
771.54
14.40 DISCHG 84.79 81.64 78.66 75.82 73.04 70.36 67.87 65.60 63.59 61.83
14.40 ELEV 771.52 771.50 771.49 771.47 771.45 771.43 771.42 771.40 771.39 771.38
15.20 DISCHG 60.31 58.99 57.79 56.57 55.28 53.98 52.74 51.59 50.57 49.66
15.20 ELEV 771.37 771.36 771.36 771.35 771.34 771.33 771.33 771.32 771.31 771.31
16.00 DISCHG 48.87 48.18 47.60 47.09 46.67 46.31 46.00 45.72 45.37 44.83
16.00 ELEV 771.30 771.30 771.29 771.29 771.29 771.29 771.28 771.28 771.28 771.28
16.80 DISCHG 44.12 43.35 42.57 41.83 41.16 40.55 40.02 39.56 39.17 38.83
16.80 ELEV 771.27 771.27 771.26 771.26 771.25 771.25 771.25 771.24 771.24 771.24
17.60 DISCHG 38.54 38.29 38.08 37.86 37.50 36.94 36.24 35
49 34
76 34
07
17.60 ELEV 771.24 771.24 771.23 771.23 771.23 771.23 771.22 .
771.22 .
771.21 .
771.21
18.40 DISCHG 33.44 32.88 32.40 31.97 31.61 31.30 31.04 30.81 30.63 30.47
18.40 ELEV 771.21 771.20 771.20 771.20 771.19 771.19 771.19 771.19 771.19 771.19
19.20 DISCHG 30.33 30.22 30.13 30.05 29.98 29.92 29.88 29.83 29.75 29.51
19.20 ELEV 771.19 771.19 771.19 771.19 771.16 771.18 771.18 771.18 771.18 771.18
20.00 DISCHG 29.05 28.43 27.75 27.08 26.44 25.85 25.33 24.87 24.47 24.13
20.00 ELEV 771.18 771.18 771.17 771.17 771.16 771.16 771.16 771.15 771.15 771.15
20.80 DISCHG 23.83 23.59 23.38 23.20 23.05 22.92 22.82 22.73 22.65 22.59
20.80 ELEV 771.15 771.15 771.14 771.14 771.14 771.14 771.14 771.14 771.14 771.14

FF1

TR20 XEQ 9/23/99 GRANDOVER (WEST) COMMERCIAL-POST-DEV. W/PONDS 100 YR, 09/23/99 20 JOB 1
REV 09/01/83 30
21.60 DISCHG 22.54 22.49 22.45 22.42 22.39 22.37 22.35 22.34 22.32 22.31
21.60 ELEV 771.14 771.14 771.14 771.14 771.14 771.14 771.14 771.14 771.14 771.14
22.40 DISCHG 22.30 22.29 22.28 22.28 22.27 22.27 22.27 22.26 22.26 22.26
22.40 ELEV 771.14 771.14 771.14 771.14 771.14 771.14 771
14 771
14 771
14 771
14
23.20 DISCHG 22.26 22.26 22.26 22.25 22.25 22.25 .
22.25 .
22.25 .
22.20 .
21.99
23.20 ELEV 771.14 771.14 771.14 771.14 771.14 771.14 771.14 771.14 771.14 771.14
RUNOFF VOLUME ABOVE BASEFLOW = 5.48 WATERSHED INCHES, 1397.12 CFS-HRS, 115.46 ACRE-FEET; BASEFLOW = .00 CFS
moDPERATION REACH CROSS SECTION 15
INPUT HYDROGRAPH= 4 OUTPUT HYDROGRAPH= 5
LENGTH = 1200.00 FEET INPUT = COEFFICIENTS RELATED TO CROSS SECTIONAL AREA, X= .85, M= 1.38
MODIFIED ATT-KIN ROUTING COEF FICIENT = 1.00 PEAK TRAVEL TIME _ .00 HOURS
*** WARNING REACH 15 ATT-KIN COE FF.(C) GREATER THAN 0.667, CONSIDER REDUC ING MAIN TI ME INCREMENT ***
PEAK TI ME(HRS
) P EAK DISCHARGE(CFS) PEAK ELEVATION(FEET)
12.19 1180.8 2 (NULL)
IME(HRS) FIRST HYDROGRAPH POINT = .00 HOURS TIME INCREMENT = .08 HOURS DRAINAGE AREA = .39 SQ.M
5.60 DISCHG .00 .00 .00 .00 .01 .01 .01 .01 .01 .01
6.40 DISCHG .01 .01 .01 .01 .02 .02 .02 .02 .02 .02
7.20 DISCHG .02 .03 .03 .03 .03 .03 .04 .04 .04 .51
8.00 DISCHG 1.35 1.97 2.46 2.89 3.26 3.61 3.95 4.28 4.56 4.81
8.80 DISCHG 5.03 5.21 5.38 5.53 5.70 5.92 6.18 6.44 6.67 6.88
9.60 DISCHG 7.09 7.35 7.64 7.95 8.23 8.47 8.71 8.98 9.56 10.83
10.40 DISCHG 13.31 17.04 21.43 26.21 31.29 36.51 41.79 47.19 52.64 58.10
11.20 DISCHG 63.66 69.47 75.68 82.42 90.06 101.93 126.15 175.46 284.99 441.83
12.00 DISCHG 700.71 984.70 1163.10 1149.65 1008.91 833.63 684.70 556
58 456
08 389
76
12.80 DISCHG 333.78 288.47 252.79 225.52 204.34 186.92 172.10 .
160.37 .
153.08 .
145.47
13.60 DISCHG 137.94 130.60 123.50 116.80 110.58 104.95 100.02 95.67 91.72 88.12
14.40 DISCHG 84.79 81.64 78.66 75.82 73.04 70.36 67.87 65.60 63.59 61.83
15.20 DISCHG 60.31 58.99 57.79 56.57 55.28 53.98 52.74 51.59 50.57 49.66
16.00 DISCHG 48.87 48.18 47.60 47.09 46.67 46.31 46.00 45.72 45.37 44.83
16.80 DISCHG 44.12 43.35 42.57 41.83 41.16 40.55 40.02 39.56 39.17 38.83
17.60 DISCHG 38.54 38.29 38.08 37.86 37.50 36.94 36.24 35.49 34.76 34.07
18.40 DISCHG 33.44 32.88 32.40 31.97 31.61 31.30 31.04 30.81 30.63 30.47
19.20 DISCHG 30.33 30.22 30.13 30.05 29.98 29.92 29.88 29.83 29.75 29.51
20.00 DISCHG 29.05 28.43 27.75 27.08 26.44 25.85 25.33 24.87 24.47 24.13
20.80 DISCHG 23.83 23.59 23.38 23.20 23.05 22.92 22.82 22.73 22.65 22.59
21.60 DISCHG 22.54 22.49 22.45 22.42 22.39 22.37 22.35 22.34 22.32 22.31
22.40 DISCHG 22.30 22.29 22.28 22.28 22.27 22.27 22.27 22.26 22.26 22.26
23.20 DISCHG 22.26 22.26 22.26 22.25 22.25 22.25 22.25 22.25 22.20 21.99
RUNOFF VOLUME ABOVE BASEFLOW = 5.48 WATERSHED INCHES,
IERATION RUNOFF CROSS SECTION 16
OUTPUT HYDROGRAPH= 6
AREA= .14 SQ MI INPUT RUNOFF CURVE= 83.
1397.12 CFS-HRS, 115.46 ACRE-FEET; BASEFLOW = .00 CFS
TIME OF CONCENTRATION= .17 HOURS
III,
I
.l

0
TR20 XEQ 9/23/99 GRANDOVER (WEST) COMMERCIAL-POST-DEV. W/PONDS 100 YR, 09/23/99 20
0 REV 09/01/83 30
INTERNAL HYDROGRAPH TIME INCREMENT= .0227 HOURS
JOB 1
PEAK TIME(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET)
12.00 609.95 (RUNOFF)
15.17 17.74 (RUNOFF)
16.44 15.30 (RUNOFF)
17.65 12.76 (RUNOFF)
19.65 10.24 (RUNOFF)
23.64 7.72 (RUNOFF)
MME IME(HRS) FIRST HYDROGRAPH POINT .00 HOURS TIME INCR EMENT = .08 HOURS DRAINAGE AREA = .14 SQ.M
4.00 DISCHG .00 .00 .00 .00 .00 .00 .00 .04 .12 .22
4.80 DISCHG .31 .41 .50 .60 .69 .78 .87 .96 1.05 1.13
5.60 DISCHG 1.22 1.30 1.39 1.47 1.55 1.63 1.82 2
12 2
32 2
47
6.40 DISCHG 2.59 2.71 2.82 2.93 3.04 3.15 3.26 .
3.36 .
3.46 .
3.56
7.20 DISCHG 3.66 3.76 3.86 3.95 4.05 4.14 4.23 4.32 4.41 4.50
8.00 DISCHG 4.58 4.89 5.44 5.74 6.09 6.73 7.12 7.34 7.51 7.66
8.80 DISCHG 7.81 7.95 8.08 8.28 8.94 9.52 9.81 10.01 10.18 10.36
9.60 DISCHG 10.98 11.71 12.08 12.32 12.52 12.70 13.21 14.07 14.56 15.38
10.40 DISCHG 17.08 18.04 19.12 21.75 23.40 24.61 27.42 29.42 30.66 33.57
a 11.20
12.00 DISCHG
DISCHG 35.97
609.94 37.43
518.88 41.78
268.85 46.02
158.11 50.68
117.05 104.39
87.13 172.68
74.53 205.66
69.18 331.45
62.44 522.21
58.87
12.80 DISCHG 56.69 50.68 46.78 45.14 41.54 38.86 37.84 35.62 33.62 32.87
13.60 DISCHG 30.96 28.80 28.01 27.06 25.86 25.40 24.69 23.47 22.95 22.34
14.40 DISCHG 21.09 20.49 19.98 18.71 18.02 17.81 17.74 17.73 17.73 17.73
15.20 DISCHG 17.74 17.66 16.67 15.69 15.37 15.27 15.24 15.23 15.23 15.24
16.00 DISCHG 15.24 15.24 15.25 15.25 15.26 15.26 15.26 14.94 13.72 13.04
16.80 DISCHG 12.82 12.76 12.74 12.74 12.74 12.74 12.74 12.74 12.75 12.75
17.60 DISCHG 12.75 12.75 12.74 12.00 10.85 10.41 10.27 10.23 10.22 10.22
18.40 DISCHG 10.22 10.22 10.22 10.22 10.22 10.22 10.22 10.23 10.23 10.23
19.20 DISCHG 10.23 10.23 10.23 10.23 10.24 10.24 10.24 10
22 9
48 8
33
20.00 DISCHG 7.89 7.74 7.70 7.69 7.68 7.69 7.69 .
7.69 .
7.69 .
7.69
20.80 DISCHG 7.69 7.69 7.69 7.69 7.69 7.69 7.69 7.69 7.69 7.70
21.60 DISCHG 7.70 7.70 7.70 7.70 7.70 7.70 7.70 7.70 7.70 7.70
22.40 DISCHG 7.70 7.70 7.70 7.70 7.71 7.71 7.71 7.71 7.71 7.71
23.20 DISCHG 7.71 7.71 7.71 7.71 7.71 7.71 7.71 7.69 6.95 5.80
RUNOFF VOLUME ABOVE BASEFLOW 5.49 WATERSHED INCHES, 496.37 CFS -HRS, 41.0 2 ACRE-FEET; BASEFLOW = .00 CFS
OP ERATION ADDHYD CROSS SECTION 17
INPUT HYDROGRAPHS= 5,6 OUTPUT HYDROGRA PH= 7
-ELEVATION OUTPUT OPTION REQUESTED BUT NO ELEVATION S GIVEN ***
PEAK TIME(H RS) PEAK DISCHARGE (CFS) PEAK ELEVATION (FEET)
12.10 1510.54 (NULL)
23.64 29.97 (NULL)

0
1 ?klj

TR20 XEQ 9/23/99 GRANDOVER (WEST) COMMERCIAL-POST-DEV. W/PONDS 100 YR, 09/23 /99 20 JOB 1
REV 09/01/83 30
IT IME(HRS) FIRST HYDROGRAPH POINT = .00 HOURS TIME INCR EMENT = .0 8 HOURS DRAINAGE AREA = .53 SQ.M
4.00 DISCHG .00 .00 .00 .00 .00 .00 .00 .04 .12 .22
4.80 DISCHG .31 .41 .50 .60 .69 .78 .87 .96 1.05 1.13
5.60 DISCHG 1.22 1.30 1.39 1.47 1.56 1.64 1.82 2.13 2.33 2.48
6.40 DISCHG 2.60 2.72 2.84 2.95 3.06 3.17 3.27 3.38 3.48 3.59
7.20 DISCHG 3.69 3.79 3.89 3.98 4.08 4.17 4.27 4.36 4.45 5.01
8.00 DISCHG 5.93 6.86 7.90 8.63 9.35 10.34 11.07 11.62 12.08 12.48
8.80 DISCHG 12.83 13.16 13.46 13.81 14.65 15.44 15.99 16.45 16.85 17.24
9.60 DISCHG 18.07 19.05 19.73 20.27 20.75 21.18 21.92 23.05 24.12 26.21
10.40 DISCHG 30.39 35.08 40.55 47.96 54.69 61.11 69.21 76.61 83.31 91.68
11.20 DISCHG 99.63 106.90 117.46 128.44 140.74 206.32 298.83 381.12 616.45 964.03
12.00 DISCHG 1310.65 1503.59 1431.95 1307.76 1125.96 920.75 759.23 625.77 518.52 448.62
12.80 DISCHG 390.47 339.15 299.57 270.65 245.88 225.77 209.94 195.99 186.69 178.34
13.60 DISCHG 168.90 159.41 151.51 143.85 136.44 130.35 124.71 119.13 114.67 110.47
14.40 DISCHG 105.88 102.13 98.64 94.53 91.06 88.17 85.61 83.33 81.32 79.57
15.20 DISCHG 78.05 76.65 74.46 72.26 70.65 69.24 67.97 66.82 65.80 64.90
16.00 DISCHG 64.11 63.43 62.84 62.35 61.92 61.56 61.26 60.67 59.09 57.87
16.80 DISCHG 56.95 56.11 55.31 54.57 53.90 53.29 52.77 52.31 51.91 51.57
17.60 DISCHG 51.29 51.05 50.82 49.86 48.35 47.35 46.51 45.72 44.97 44.28
18.40
19.20 DISCHG
DISCHG 43.66
40.56 43.10
40.45 42.61
40.36 42.19
40.28 41.83
40.21 41.52
40.16 41.26
40.11 41.04
40.05 40.85
39.23 40.70
37.84
20.00 DISCHG 36.93 36.18 35.45 34.76 34.12 33.54 33.01 32.55 32.16 31.82
20.80 DISCHG 31.52 31.28 31.07 30.89 30.74 30.62 30.51 30.42 30.35 30.28
21.60 DISCHG 30.23 30.19 30.15 30.12 30.09 30.07 30.05 30.04 30.02 30.01
22.40 DISCHG 30.00 30.00 29.99 29.98 29.98 29.98 29.97 29.97 29.97 29.97
23.20 DISCHG 29.97 29.97 29.97 29.97 29.97 29.97 29.97 29.95 29.15 27.79
RUNOFF VOLUME ABOVE 13ASEFLOW 5.48 WATERSHED INCHES, 1893.49 CFS -HRS, 156 .48 ACRE-F EET; BASEFLOW = .00 CFS
P ERATION RESVOR STRUCTURE 18
INPUT HYDROGRAPH= 7 OUTPUT HYDROGRAPH= 1
SURFACE ELEVATION= 753.50
PEAK TIME(HRS) PEAK DISCHARGE(CFS) P EAK ELEVATION(FEET)
12.33 1120.62 761.34
llME(HRS) FIRST HYDROGRAPH POINT = .00 HOURS TIME INCREMENT = .08 HOURS DRAINAGE AREA = .53 SQ.M
4.80 DISCHG .00 .01 .01 .02 .02 .03 .03 .04 .05 .06
4.80 ELEV 753.50 753.50 753.51 753.51 753.51 753.51 753.52 753.52 753.52 753.53
5.60 DISCHG .06 .07 .08 .10 .11 .12 .13 .15 .16 .18
5.60 ELEV 753.53 753.54 753.54 753.55 753.56 753.56 753.57 753.58 753.59 753.60
6.40 DISCHG .20 .22 .24 .26 .28 .31 .33 .35 .38 .40
6.40 ELEV 753.61 753.62 753.63 753.64 753.65 753.66 753.67 753.69 753.70 753.71
7.20 DISCHG .43 .46 .48 .51 .54 .57 .60 .63 .66 .69
7.20 ELEV 753.73 753.74 753.75 753.77 753.78 753.80 753.81 753.83 753.85 753.86
8.00
8.00 DISCHG
ELEV .73
753.88 .77
753.91 .83
753.94 .89
753.97 .95
754.00 1.05
754.03 1.16
754.06 1.27
754.09 1.38
754.13 1.50
754.16
8.80 DISCHG 1.63 1.75 1.88 2.01 2.14 2.28 2.43 2.58 2.71 2.81
J
0

TR20 XEQ 9/23/99 GRANDOVER (WEST) COMMERCIAL -POST -DEV. W/PONDS 100 YR, 09/23/99 20 JOB 1
REV 09/01/83 30
8.80
9.60 ELEV
DISCHG 754.20
2.92 754.23
3.03 754.27
3.15 754.31
3.27 754.35
3.39 754.39
3.51 754.43
3.64 754.47
3.88 754.52
6.37 754.57
8.75
9.60 ELEV 754.61 754.66 754.72 754.77 754.83 754.88 754.94 755.00 755.05 755.09
10.40 DISCHG 11.22 13.95 16.96 20.42 24.33 28.57 34.67 42.95 50.96 58.86
10.40 ELEV 755.14 755.19 755.24 755.30 755.38 755.45 755.54 755.62 755.70 755.78
11.20 DISCHG 66.83 74.71 82.89 91.78 101.28 117.31 147.91 197.52 272.17 406.49
11.20 ELEV 755.86 755.94 756.02 756.09 756.17 756.29 756.53 756.86 757.32 758.05
12.00 DISCHG 594.00 809.20 983.50 1085.75 1120.45 1094.75 1027.33 938.71 841.70 746.91
12.00 ELEV 758.93 759.92 760.72 761.18 761.34 761.22 760.92 760.51 760.07 759.63
12.80 DISCHG 660.27 582.08 512.54 455.16 406.18 361.49 323.28 292.30 267.68 246.91
12.80
13.60 ELEV
DISCHG 759.24
229.03 758.88
212.89 758.56
198.06 758.28
185.05 758.04
173.45 757.81
163.10 757.61
153.92 757.43
145.65 757.29
139.00 757.17
133.14
13.60 ELEV 757.06 756.96 756.86 756.78 756.70 756.63 756.57 756.51 756.46 756.42
14.40 DISCHG 127.60 122.36 117.49 112.85 108.40 104.23 100.38 96.85 93.63 90.70
14.40 ELEV 756.37 756.33 756.29 756.26 756.22 756.19 756.16 756.13 756.10 756.08
15.20 DISCHG 88.06 85.69 83.44 81.20 79.07 77.10 75.26 73.56 71.99 70.55
15.20 ELEV 756.06 756.04 756.02 756.01 755.99 755.97 755.95 755.93 755.92 755.90
16.00 DISCHG 69.24 68.06 6G.99 66.04 65.20 64.45 63.79 63.18 62.46 61.60
16.00 ELEV 755.89 755.88 755.86 755.85 755.85 755.84 755.83 755.83 755.82 755.81
16.80 DISCHG 60.69 59.79 58.91 58.05 57.22 56.44 55.70 55.02 54.39 53.81
16.80 ELEV 755.80 755.79 755.78 755.77 755.77 755.76 755.75 755.74 755.74 755.73
17.60 DISCHG 53.30 52.84 52.43 51.97 51.35 50.60 49.80 49.00 48.21 47.44
17.60 ELEV 755.73 755.72 755.72 755.71 755.71 755.70 755.69 755.68 755.67 755.67
18.40 DISCHG 46.69 45.97 45.30 44.67 44.10 43.57 43.10 42.68 42.30 41.97
18.40 ELEV 755.66 755.65 755.64 755.64 755.63 755.63 755.62 755.62 755.61 755.61
19.20 DISCHG 41.68 41.43 41.21 41.01 40.85 40.71 40.58 40.47 40.29 39.91
19.20 ELEV 755.61 755.60 755.60 755.60 755.60 755.60 755.60 755.59 755.59 755.59
20.00
20.00 DISCHG
ELEV 39.37
755.58 38.76
755.58 38.12
755.57 37.47
755.56 36.81
755.56 36.17
755.55 35.54
755.54 34.94
755.54 34.38
755.53 33.87
755.53
20.80 DISCHG 33.39 32.96 32.57 32.23 31.92 31.65 31.42 31.21 31.08 30.98
20.80 ELEV 755.52 755.52 755.51 755.51 755.51 755.51 755.50 755.50 755.50 755.50
21.60 DISCHG 30.89 30.80 30.72 30.65 30.58 30.52 30.46 30.41 30.36 30.32
21.60 ELEV 755.50 755.49 755.49 755.49 755.49 755.49 755.49 755.49 755.49 755.48
22.40 DISCHG 30.28 30.24 30.21 30.18 30.16 30.13 30.11 30.10 30.08 30.07
22.40 ELEV 755.48 755.48 755.48 755.48 755.48 755.48 755.48 755.48 755.48 755.48
23.20 DISCHG 30.05 30.04 30.03 30.02 30.02 30.01 30.01 30.00 29.94 29.76
23.20 ELEV 755.48 755.48 755.48 755.48 755.48 755.48 755.48 755.48 755.48 755.47
RUNOFF VOLUME ABOVE BASEFLOW 5.34 WATERSHED INCHES, 184 3.65 CFS-HRS, 152. 36 ACRE-FEET; BASEFLOW = .00 CFS
ECUTIVE CONTROL OPERATION ENDCMP
COMPUTATIONS COMPLETED FOR PASS 1
RECORD
0
EXECUTIVE CONTROL OPERATION ENDJOB
J
RECORD

TR20 XEQ 9/23/99 GRANDOVER (WES T) COMME RCIAL-P OST-DEV. W/PONDS 100 YR, 09/ 23/99 20 JOB 1
REV 09/01/83 30
SUMMARY TABLE 1 - SELECTED RESULTS OF STANDARD AND EXECUTIVE CONTROL INSTRUCTIONS IN THE ORDER PERFORMED
(A STAR(*) AFTER THE PEAK DISCHARGE TIME AND RATE ( CFS) VALUES INDICATES A FLAT TOP HYDROGRAPH
A QUESTION MARK(?) INDICATES A HYDROGRAPH WITH PEAK AS LAST POINT.)
SECTION/ STANDARD RAIN ANTEC MAIN PRECIPITATION PEAK D ISCHARGE
STRUCTURE CONTROL DRAINAGE TABLE MOIST TIME --------------- ---------- RUNOFF ------- ----------- -----------
ID OPERATION AREA # COND INCREM BEGIN AMOUNT DURATION AMOUNT ELEVATI ON TIME RATE
(SQ MI) (HR) (HR) (I11) (HR) (IN) (FT) (HR) (CFS)
ALTERNATE 1 STORM 1
SECTION 1 RUNOFF .24 2 2 .08 .0 7.50 24.00 6.29 --- 12.04 1048.00
STRUCTURE 16 RESVOR .24 2 2 .08 .0 7.50 24.00 5.69 801.58 12.14 853.28
SECTION 3 REACH .24 2 2 .08 .0 7.50 24.00 5.69 --- 12.14 853.28
SECTION 4 RUNOFF .03 2 2 .08 .0 7.50 24.00 6.30 --- 12.03 110.75
STRUCTURE 17 RESVOR .03 2 2 .08 .0 7.50 24.00 5.60 817.76 12.12 90.63
SECTION
R 6 REACH .03 2 2 .08 .0 7.50 24.00 5.60 --- 12.12 90.63
SECTION 7 RUNOFF .03 2 2 .08 .0 7.50 24.00 5.72 --- 12.00 134.73
XSECTION
TRUCTURE 8
1 ADDHYD
RESVOR .05
.05 2
2 2
2 .08
.08 .0
.0 7.50
7.50 24.00
24.00 5.67
5.09 ---
801.44 12.03
12.22 209.85
123.80
SECTION 10 REACH .05 2 2 .08 .0 7.50 24.00 5.09 --- 12.22 123.80
.SECTION 11 ADDHYD .29 2 2 .08 .0 7.50 24.00 5.58 --- 12.14 972.73
SECTION 12 RUNOFF .10 2 2 .08 .0 7.50 24.00 5.37 --- 12.05 390.69
XSECTION 13 ADDHYD .39 2 2 .08 .0 7.50 24.00 5.52 --- 12.11 1315.37
TRUCTURE 15 RESVOR .39 2 2 .08 .0 7.50 24.00 5.48 774.75 12.19 1180.82
SECTION 15 REACH .39 2 2 .08 .0 7.50 24.00 5.48 --- 12.19 1180.82
XSECTION 16 RUNOFF .14 2 2 .08 .0 7.50 24.00 5.49 --- 12.00 609.95
SECTION
I 17 ADDHYD .53 2 2 .08 .0 7.50 24.00 5.48 --- 12.10 1510.54
TRUCTURE 18 RESVOR .53 2 2 .08 .0 7.50 24.00 5.34 761.34 12.33 1120.62

ITR20 XEQ 9/23/99 GRANDOVER (WEST) COMMERCIAL-POST-DEV. W/PONDS 100 YR, 09/23/99 20 JOB 1
REV 09/01/83 30
SUMMARY TABLE 2 - SELECTED MODIFIED ATT-KIN REACH ROUTINGS IN ORDER OF STANDARD EXECUTIVE CONTROL INSTRUCTIONS
(A STAR(*) AFTER VOLUME ABOVE BASE (IN) INDICATES A HYDROGRAPH TRUNCATED AT A VALUE EXCEEDING BASE + 10
A QUESTION MARK(?) AFTER COEFF.(C) INDICATES PARAMETERS OUTSIDE ACCEPTABLE LIMITS, SEE PREVIOUS WARNI
HYDROGRAPH INFORMATION ROUTING PARAMETERS
OUTFLOW+ VOLUME MAIN ITER- Q AND A PEAK S/Q ATT-
XSEC REACH INFLOW OUTFLOW INTERV.AREA BASE- ABOVE TIME ATION EQUATION LENGTH RATIO @PEAK KIN
ID LENGTH PEAK TIME PEAK TIME PEAK TIME FLOW BASE INCR # COEFF POWER FACTOR 0/I (K) COEFF
(FT) (CFS) (HR) (CFS) (HR) (CFS) (HR) (CFS) (IN) (HR) (X) (M) (K*) (Q*) (SEC) (C)
ALTERNATE 1 STORM 1
3 1350 848 12.2 848 12.2 --- --- 0 5.69 .08 0 1.60 1.45 .007 1.000 83 1.00?
6 800 89 12.2 89 12.2 --- --- 0 5.60 .08 0 1.60 1.44 .010 1.000 102 1.00?
10 800 123 '12.2 123 12.2 --- --- 0 5.09 .08 0 1.60 1.44 .005 1.000 92 1.00?
15 1200 1163 12.2 1163 12.2 --- --- 0 5.48 .08 0 .850 1.38 .014 1.000 140 1.00?
TR20 XEQ 9/23/99 GRANDOVER (WEST) COMMERCIAL-POST-DEV. W/PONDS 100 YR, 09/23/99 20 JOB 1
REV 09/01/83 30
SUMMARY TABLE 3 - DISCHARGE (CFS) AT XSECTIONS AND STRUCTURES FOR ALL STORMS AND ALTERNATES
XSECTION/ DRAINAGE
STRUCTURE AREA STORM NUMBERS..........
ID (SQ MI) 1
t
STRUCTURE 18 .53
ALTERNATE 1 1120.62
STRUCTURE 17 .03
ALTERNATE 1 90.63
STRUCTURE 16 .24
ALTERNATE 1 853.28
STRUCTURE 15 .39
ALTERNATE 1 1180.82
a
STRUCTURE 1 .05
ALTERNATE 1 123.80
XSECTION 1 .24
ALTERNATE 1 1048.00
` XSECTION 3 .24
ALTERNATE 1 853.28
XSECTION 4 .03
ALTERNATE 1 110.75
XSECTION 6 .03
ALTERNATE 1 90.63
XSECTION 7 .03
ALTERNATE 1 134.73
XSECTION 8 .05
ALTERNATE 1 209.85
XSECTION 10 .05
1 ALTERNATE 1 123.80
XSECTION 11 .29
ALTERNATE 1 972.73
XSECTION 12 .10
ALTERNATE 1 390.69
TR20 XEQ 9/23/99 GRANDOVER (WEST) COMMERCIAL-POST-DEV. W/PONDS 100 YR, 09/23/99 20 JOB 1
REV 09/01/83 30
I
SUMMARY TABLE 3 - DISCHARGE (CFS) AT XSECTIONS AND STRUCTURES FOR ALL STORMS AND ALTERNATES
t XSECTION/ DRAINAGE
STRUCTURE AREA STORM NUMBERS..........
ID (SQ MI) 1
XSECTION 13 .39
ALTERNATE 1 1315.37
XSECTION 15 .39
ALTERNATE 1 1180.82
XSECTION 16 .14
ALTERNATE 1 609.95
XSECTION 17 .53
ALTERNATE 1 1510.54
62
?a

aG
I}
r
C
r
L
7

J
n

J

J

J
L
H
CHANNEL ANALYSIS
?i-

/"
r
wffl;? 1%w
. V-- it .

r

^00
L1
\r
w

Y
a
1
?
U's
p y. J y
.. . + '.. + r ? t y i5+1
1.
y?4
t '
t
kmk,
+ .w \ 1!'rt 411'4 df111.?d1W?+ 4Z

¦
o
?r

LO
\./

om
W
\r

?. t
?
r

'. " rAl
:
i

?IIY *), '
i?
{1 W
•
'r, r rr'r..
s(i9* ?1r'+Y 4?.+e t ? J?..

h

Amapa". `7 R 9F Tr

71
}

r y
p

1

IN
eF ?
M

?r
,a.
004
W

V/
'Ifto

?Wr?
L PYS
44Tf
ii e y{ yr
? L
f f •..
t t L, c p y? +r
.£th?.u

fa 1,

f
fry
? y?
jK.a 'MQ 0.? iY.,.

. Y' k. 4 ?? i r" .eR?w
i..? .f ? ..• „gyn..

m

/~
r
L
r
o? i LID --------------
.9.0?
Wdtu?ww QZ = 3 ?y. S o __ __ .
Li)
g!kA
\ cu J, 0IS?L (x.53 ?, ? _ 2-LI/
v A VLLI?
?-s
s?jZ SJ F??? LJ3 f Z J
.09 l o t
'o
i
I i
g g
? ?W?W
?n.l?y
,rwoo
?s?aa
m?rgi?n`n?' dsd
Q?
4

C 110 0.OS?
77-
L
d _ ?S 755
L
v
CO - 1-0 +- 1.C/g
Cs? = V/' --? Z-O Lf, S 0 --
v- z. 9 1 s ?l d -- 3, ypr

wwwwww
?ggg?g
77077C,
Nooooo
NNNNN
• NEON
6 Wd1ti1WW
FF?w?yyo??uoul1
WNNNJJ
Z?rr?VY
538?5? <
d
F-z ?
? r.
VA
_ z
z/ z -C Zs. ?? , zZS? /oJ zed Z s /I w .rl 6c/f
C98 , `f9 = ?ocl f LOdL L
t U f- yo . 0? -C/ ?? to cI t )-c)c( z? - - - - -
(6,).
A-SS ' _ c? _ i • S' -? ?? o '?v ,
Y2 _ sal . o _(,o.,,,? ,
21, 6-g - ?"r &7-
t f ?3 ?
vA o i

S?o
m

0

D
o
U) D
-E
?'

m

a C7
0

-?

°

?

o N

w

.-.
Cl) o

a

?

, Ill

cn
o

( C7

?
cn

m

CD

Q I"fl

m

m
<
.? cn

O
o
-•

O
-+ co

CJl
O
CD
O
Cn
N
O
Cn
P
CD
N
?1
N
W
N
aW
N
A
0
J
P
0
?l
COn
Cn
Cn
O
W
00
m
Co
W

°^l , ICY
4! :a
c+

13

N i ! c I i 1 I I

S'

iv
sv
O
CD
n
m
CD
w
n
N
(n
1
V
--h
"T1

PO
m =3 :3
`
<
n
o _0
w
U)

=

M
r-
O o
(11
O a .-. _ o
- (A M (
D
w
CL cD
<
n U) ?. a 0
a n p
o ^ <
.,

0

N
W N
0?0
W
P W
C)
P
O

oi
cl
O 1
Cn
P. 6
co
al
cc) o
O
?
A

co

r\)
c
? i
I
? I
1
s !
F I
r t-
F F
1 ?
? j ' ? j ; i
?. N
Cl
?
N
?ic
F
F v ?
NF
E
f
I

t ? N
G`
JJ
W
F
r
t
!
?
E G'
'
E
F
i
4

t
F
t
i
w
0
(D
n
m
(D
W
n
N
!y
T
O
(D
T
n

n
S?o

m
0
Nn ?1

o D

' ?

m

-? M

Q C7
:3

o

'
n ?
X

c7

a <

0

w -I
D

n (J

o
, m

b

?0
CD C7

-

cn ?

Cl)

m

<,
(D

=
CD
Q m

m

<

O

o

W

cn

O

Cn
O

j

J

N

CJ?

N

N

N

O O

CTI
0

W

l

M

N

O

O
O

m

N

V
1 { { 1
.L

I ! s ? I e I i
O ?.

1 W
e
1
1
w
0
.1

<
CD
.0
M
(D
w
n
Cn
1
V
1
O
?T•
V
-n
G

n

r

`- ?1

0-
r
O
,-. D

=3
=3

-
r* C7
:3

-1

--h
X

c)

n <

O
W -i

n o m

cn
o

-ti o

m

m <

(D
Q m

m
m
N
0

j

co

W
N

N

-+

W

N

.

j
N
O cn 0
,1

D

(D
m

N

CD
m

O

(0
m
m O CJ7 -4 N O W C
D O W E

'
c F
f'<
t
4 ?

I ? I I I s

I I ? ? I I I

N

I ? I I I I
m
s?
O
2
m
CD
m
(a
m
(D
0)
0
Cf)
_a
O
(D
'T1

1
Project No. DWQ 970330
?# 17U/RED DESIGN:
SUBMITTED DESIGN: RE d
elevations Su
Bottom of Basin (ft) 810
Permanent Pool (ft) 814 ?' 4 ft. depth
Temporary Pool (ft) 815.7 1.7 ft. depth
Project Name: Grandovcr Commercial an
areas
Permanent Pool SA (sq ft)
Drainage Area (ac)
Impervious Area (ac)
volumes
Permanent Pool (cu ft)
Temporary Pool (cu ft)
Forebay (cu ft)
other parameters
S A/DA
Orifice Diameter (in)
Design Rainfall (in)
20908.8
15.69
10.98
o .?
o ? ?l
0
4
1
Linear Interpolation of Correct SAIDA***
olo Im ervious
Next Lowest 70
Project Impervious 70.0
Next Highest 80

status
ok
ok
i
16398 sq. ft. ok V
-
70.0%
6;u - 38719 cu. ft.
#DIV/0! 17o
2.40
0.39 cfs drawdown
0.0 day drawdown
check temporary pool
11DIV/0!
?r
r
eq ''..;urtc
3.5355:
check drawdown
area
9.81711 t
1
4 ft. Permanent Pool Depth
SA/DA from Table
2.4
2.40
2.78
NOTES:
*This spreadsheet is designed to perform a quick preliminary check of design requirements and should not
be considered a complete evaluation of any project. Use 'tab' instead of 'enter' to automatically advance
to the next data entry window.
**This spreadsheet is designed to roughly calculate the draw-down time using the average temporary pool
depth and the orifice equation to estimate the change in driving head over time.
***Calculation of the required design parameters requires the SA/DA be computed in the linear
interpolation table provided. If the project % impervious is an even value that can be found directly in
the table then enter this as either the next higher or lower value and complete the table.

LGlYIbDeSiQVI ?
ENGINEERING SERVICES INC.
1208 EASTCHESTER DRIVE, SUITE 200
HIGH POINT, NC 27265
Z S,-Q- I-A
Q? ® 1208 Eastchester.Drive, Suite 200
High Point 'North Carolina 27265
Telephone: [phone]
/ Fax: [phone]
DATE: J(,1r'k ?? cI
TO:
1 V v . ?UkW hZV M.,t
f
o
PROJECT NAME:
C-?rcN ?-
Enclosed Herewith
Under Separate Cover
For Your Use
Items Sent:
4
For Review/Comment
As Requested
For Approval
LETTER OF TRANSMITTAL
1700 East Boulevard
Charlotte, North Carolina 28203
Telephone: [phone]
Fax: [phone]
PROJECT NO.
??' S6-b'?-
Via:

Comments: C

u I I iAt, 11Z.-I . 1? 146'0? O'?LLC mn-e t 4'
Z?3 "" .
Thanks,

* / C-,, k-?'C-ot G
B, : l "? Copy To:
Project No. DWQ 970330
Project Name: Grandover Commercial Pond )#1
SUBMITTED DESIGN: 1i`EQUIRED DESIGN:
elevations
Bottom of Basin (ft)
Permanent Pool (ft)
Temporary Pool (ft)
areas
Permanent Pool SA (sq ft)
Drainage Area (ac)
Impervious Area (ac)
volumes
Permanent Pool (cu ft)
Temporary Pool (cu ft)
Forebay (cu ft)
other parameters
SA/DA
Orifice Diameter (in)
Design Rainfall (in)
792
795.5 3.5 ft. depth
797.1 1.6 ft. depth
124146 135891 sq. ft. I /,
151.74 js.o 50A
83.5 55.0 %
300335 cu. ft.
0 #DIV/0! %
4
1
2.06
0.38 cfs drawdown
0.0 day drawdown
Linear Interpolation of Correct SAIDA***
3.5 ft. Permanent Pool Depth
rlo Impervious SA/DA from Table
Next Lowest 50 1.895
Project Impervious 55.0 2.06
Next Highest 60 2.215
3.535534
check drawdown
area
9.8175
?/M vs
NOTES*
*This spreadsheet is designed to perform a quick preliminary check of design requirements and should not
be considered a complete evaluation of any project. Use 'tab' instead of 'enter' to automatically advance
to the next data entry window.
**This spreadsheet is designed to roughly calculate the draw-down time using the average temporary pool
depth and the orifice equation to estimate the change in driving head over time.
***Calculation of the required design parameters requires the SA/DA be computed in the linear
interpolation table provided. If the project % impervious is an even value that can be found directly in
the table then enter this as either the next higher or lower value and complete the table.
status
ok
ok
check surface area
check temporary pool
h?:S nn
#DIV/0! r'
- en diameter

State of North Carolina
Department of Environment
and Natural Resources
Division of Water Quality
James B. Hunt, Jr., Governor
Wayne McDevitt, Secretary
Kerr T. Stevens, Director
Alo
Hu"DENR
Division of Water Quality
July 7, 1999
Tori Waldron
LandDesign
1208 Eastchester Drive, Suite 200
High Point, NC 27265
Subject: Grandover Commercial
DWQ Project No. 970330
Guilford County
Dear Ms. Waldron:
The Wetlands Unit staff reviewed the stormwater management plans for the subject project and determined
that additional information is necessary to complete the technical review process. The required additional
information is as follows:
Permanent Water Quality Pool, Temporary Water Quality Pool
The amount of impervious area used to determine the amount of runoff to be stored in the temporary
pool must be based on the total amount of impervious area in the drainage to each pond. The
calculations provided appear to indicate that only on-site impervious area was considered in the
above calculation.
The depth used to determine the SA/DA ratio for pond # 16 appears to be based upon a pond depth
of 4 feet. The plans appear to indicate that the pond depth will be 3.5 feet. Please provide any
necessary adjustments to the plans and/or calculations in order to provide adequate permanent pool
surface area.
2. Forebay
Please provide the volumes of each forebay and the permanent pools for both ponds. Also, please
provide an estimate of the amount of acreage draining to each forebay in pond #16.
3. Emergency/Maintenance Drain
An emergency/maintenance drain must be provided to draw down the permanent pool volume.
Please specify this on the engineering plans and supply calculations.
Operation and Maintenance Agreement
An operation and maintenance agreement is required. Reference NCDENR Administrative Code
Section 15A NCAC 2H .1000 Stonnx-ater Management, December 1995, Section. 1008, item i.
4401 Reedy Creek Road, Raleigh, NC 27607 Telephone [phone] FAX [phone]
An Equal Opportunity Affirmative Action Employer 50% recycled/ 10% post-consumer paper
A stormwater control structure will not operate as designed without regular maintenance. Typical
requirements for an operation and maintenance plan include the following:
• Vegetation management/mowing schedule
• Semi-annual inspections
• Debris check after every storm event
• Benchmark for sediment removal (specific elevations listed)
• Designation of a responsible party
Please note that the example plan is not site specific. Should you choose to use the example plan, it
is necessary to modify all of the "if' statements and provide specific benchmarks for sediment
removal. The operation and maintenance agreement must also be signed by the responsible party
and notarized.
Stream Channel and Bank Stability
It is not clear from the information provided that the stream banks will remain stable. The
information provided indicates velocities in the channel could result in accelerated bank erosion.
Additional information is necessary in order to adequately show (or provide) stream bank and
channel stability. Please feel free to call me at the number below to discuss this matter further.
Division wetlands unit staff will strive to complete a final technical review within 10 working days of
receipt of the requested information. Completing the enclosed worksheet will greatly decrease the staff
review time. If you have any questions or would like to discuss this project, please contact me at (919)
733-1786.
Sincerely,
Todd St. John
Environmental Engineer
Attachments
cc: John Dorney, Wetlands/401 Unit
Winston-Salem Regional Office
File

7
7
i

7

d
E

7
Cl iVaETLE iU? Gr+ ?.
,%I Ell pIIP,LiY:'-??--
0
Lanb ueu
Engineering Services, Inc.
1
i
J-
I
7
n
u
0
n
E
ENGINEERING CALCULATIONS
for
GRANDOVER (WEST)
COMMERCIAL
25 JUNE 1999
L
P.
n
DEVELOPER:
KOURY CORPORATION
400 FOUR SEASONS TOWN CENTER
GREENSBORO, NORTH CAROLINA 27407
[phone]
0

ENGINEER:
LANDDESIGN ENGINEERING SERVICES, INC.
1208 EASTCHESTER DRIVE, SUITE 200
HIGH POINT, NORTH CAROLINA 27265
[phone]
u

e ?oh? Z IP?x,. ??v ?C) lfle_c?V St?pvvv? I (?JD ?fP?-'?5?
%?. ?'N ?/ ? ? ?'!-? 1 ?.../. •1?•t ~ it^, V i t ? :':-?
• I {?tJ I ? %t roll ;. 1,.,

?=

?U(o. u? 1
1 4
2? ? ?,= ??t ? ?? goI (? I

?Cai"?.Cp?-

"??3. ??

?3ZI ,3(o

I/PAC-.3-t?

??y.??

IL L
?oI'l- ::,llvq
?i
C?a?nvQ-( vC s
(el 010 COO, Ll 2- ?l -4 1
/O \ f(lo (L, .-.U, U9 I 1S

( UI o ?k!, ?- (,
Y,( a ?-,

01,

r
vI , f C j r,' ! rr
r \

i
i.
l?

L

--
C4
t
? SS c? ? ?o o . ? ?
L/

?Do,7

?or.? x,53 r?? , ?0

010 23 S
do?, 0 ? , ?<<< eta Z - ? ?

I
?I
C

?z vJ?? ??55
? J/ -? J?C-v ?.!i r.'.i? - ''?/? f j t?? (,? .;? j ???. _•. --1i / V ' I `I _ ??• ?-----1
'r
V 1
Ar-
r
_ V n ' C
?- . -?1 `,,..;°:>:,r•a_ n._- ? yr `: ??? ? ?'?i?i+_??. -
L.L

(4y
?zj
????c, IZ5 5?

7
I?
C
t-
I ??.- a 1 -- ?S? r A c7 'IN
I
i
' i f? 1

-a v?c? v a _ 5

2l r Co . kC YV
C x 2 y, `? ?- I Z
lz>Z D D is.?
80

-G 6
-

GV\

0
1191
? 171 w #?w
L-.
t_
Y
1'l r 'JC _
Cl-
t?U
8 CL
_ f
= ,C70DDOC??(2C(L,
C) L(
- ---------------
l(o
?- 7 , d ( L? J??? l9 1 L
CN:
J

(4o 6 . S o
_
_
C)
Es
.
31 (0
-

l5b C, I Co
"5

r

- ,
C):
rt
v `

rCL:

e c„rU -
C

C-p V - 1 V

s
04 199?

?• qn - - ,

--- - -- -- --------------- - -
Z( oc o O
2 2-i2 Z(SSc? rSSc?

61
2-?VBI C)
IS-1:03 S-LD
2 CD
2- Ss
- -----------
-

81i. 0 z092,3,

Z°18?D -

?293?,fl

s
!1 r
I ._
/r• r
8q OA
C L
--
k
s
0
s
s
s
s
e
s
s
s
s
S?1aa2Ea ? 18

° fin. i ? a?-, ? P,zca = `?o, 2 p•.c, .
° Lp?o UsE
C70LF CoU2? = i 2? . q Ac. _
1'I u L71-FPM 3-7 • 2 AC.
611,4 L -z
C(,IIZJc MLIHfz-Z
= 7o CuNDtu?t,o?=D? G.?co D?
' ??? - U??c?? Scs cucv.?? NuMRCfZ= 83
. ? 11M? o? ? C.?n1TZA-rrc?? ? ?aS? • ? cU?(? f?Ei?
?tN1E a= CA?? C.?r?1 ? Za--rco?.t 4?i7?- Dc.?E?o ???

If:
r?
.. r
jE
i`.
r.
!. ...330 ... .. . . ............._.._.. ._. ....._._.-----•----------
._........ .. ? •??? . o. ._ . X15600. _. 3 33q
Q I,I .. .0`13.0...._ .. .._. 123300 -•-------•
TE;
IN _
...k°4a.20._._.....
• 5? 2 o So
-ILL r,
.....ilj .. .221 `l,oo ..2?.? Zoo ..._
......... .._..-------ZOO 33
... ... ........... .
IZc? ID
I ?
L5
!i
Q=Z.(as
------
- G2 C a
fI ? .
0
F, !
?I
11
a S .6-1E SZD?-L,C b ?sc?aeC-,E
-
it
Id -7
O , Ej
0

I
11
.:I

7 S(, o S,5 I

!I
T,....
S_7.1_ ....
??
8 • (??
-+:, ? - ......_._._ ..---__.._...__ ...---?--•----._..?........----.....------.....----- -- ------2-x-3_ ?. SZ------- -

t i

1
:i
is i

********************************************************************************
* * TR 20 S/N
* * HMVersion : 3.40
* TR 20 * Date . 6/22/99
* * Time : 8:51:04
* Project Formulation Hydrology * Input file : grand2.t20
* * Output file : grand2.out
*
* *
*
****************************************************** **************************
xxxxxxx xxxxxx xxxxx xxxxx
x x x x x x xx
x x x x x x x
x xxxxxx x x x x
x x x x x x x
x x x x xx x
x x x xxxxxxx xxxxx
...........................................
...........................................
...........................................
...........................................
Full Microcomputer Implementation
by
Haestad Methods, Inc. ..
...........................................
...........................................
...........................................
...........................................
37 Brookside Road * Waterbury, Connecticut 06708 * [phone]
u

******************80-80 LIST OF INPUT DATA FOR TR -20 HYDROLOGY************ ******
9 OB TR-20 FULLPRINT 10
TITLE 001 GRANDOVER (WEST) COMMERCIAL - POST-DEV. W/PONDS 2 YR, 06/22/99 20
TITLE 30
3 STRUCT 15 40
8 770.86 0.00 0.00 50
8 771.00 0.04 0.419 60
8 772.00 162.00 3.477 70
8 773.00 458.21 6.654 80
8 774.00 841.78 9.951 90
8 75.000 1296.00 13.370 100
8 775.65 1735.68 16.891 110
8 120
9 ENDTBL 140
3 STRUCT 16 170
8 795.5 0.00 0.00 171
8 796.0 0.30 1.440 172
8 797.1 0.53 4.699 173
8 797.5 30.95 5.917 174
8 798.0 103.12 7.462 175
8 798.5 199.51 9.035 176
8 799.0 315.07 10.635 177
8 800.0 593.51 13.916 178
8 801.0 925.22 17.308 179
8 180
8 181
8 182
9 ENDTBL 251
STRUCT 17 252
8 814.0 0.00 0.00 253
815.0 0.24 0.505 254
815.7 0.31 0.884 255
ti 816.0 5.26 1.053 256
a 816.5 21.84 1.343 257
817.0 44.88 1.645 258
818.0 105.11 2.284 259
8 819.0 180.37 2.970 260
820.0 368.08 3.705 261
ENDTBL 262
3 STRUCT 18 270
753.50 0.00 0.00 271
754.00 0.95 0.78 272
754.50 2.67 1.81 273
8 755.00 3.77 2.83 274
755.50 31.14 4.17 275
756.00 80.33 5.51 276
8 756.50 143.75 7.19 277
di4
1
**********************80-80 LIST OF INPUT DATA (CON TINUED)**********************
8 757.00 218.66 8.86 278
8 757.50 303.52 10.88 279
8 758.00 397.25 12.90 280
8 758.50 499.09 15.27 281
8 759.00 608.43 17.64 282
9 ENDTBL 283
3 STRUCT 01 290
8 798.50 0.00 0.00 291
8 799.00 0.10 0.70 292
8 799.50 0.68 1.54 293
8 800.00 16.87 2.38 294
8 800.50 46.18 3.39 295
8 801.00 84.03 4.39 296
8 801.50 128.80 5.53 297
8 802.00 179.55 6.67 298
8 802.50 235.63 8.01 299
8 803.00 402.66 9.34 300
8 803.50 662.04 10.93 301
8 804.00 982.86 12.51 302
9 ENDTBL 303
6 RUNOFF 1 001 1 0.24 90.00 0.251 1 1 1 360
6 RESVOR 2 16 1 2 795.5 1 1 1 1 1 370
6 REACH 3 003 2 3 1350.00 1.6 1.451 1 1 1 380
6 RUNOFF 1 004 4 0.025 90.00 0.231 1 1 1 390
6 RESVOR 2 17 4 5 814.00 1 1 1 1 1 391
6 REACH 3 006 5 6 800.00 1.6 1.441 1 1 1 392
6 RUNOFF 1 007 7 0.03 85.0 0.171 1 1 1 393
6 ADDHYD 4 008 7 6 5 1 1 1 1 1 394
6 RESVOR 2 01 5 4 798.50 1 1 1 1 1 395
6 REACH 3 010 4 6 800.0 1.6 1.441 1 1 1 396
6 ADDHYD 4 011 6 3 1 1 1 1 1 1 397
6 RUNOFF 1 012 2 0.10 82.0 0.251 1 1 1 398
6 ADDHYD 4 013 1 2 3 1 1 1 1 1 399
16 RESVOR 2 15 3 4 770.86 1 1 1 1 1 400
6 REACH 3 015 4 5 1200.00 0.85 1.381 1 1 1 401
6 RUNOFF 1 016 6 0.14 83.00 0.171 1 1 1 402
6 ADDHYD 4 017 5 6 7 1 1 1 1 1 403
6 RESVOR 2 18 7 1 753.50 1 1 1 1 1 404
ENDATA 450
7 INCREM 6 0.08 460
7 COMPUT 7 001 18 0.0 3.5 1.02 2 01 01 470
ENDCMP 1 480
ENDJOB 2 490
***************** ** ********* **END OF 80-80 LIST**************** ****************
I
TR20 XEQ 6/22/99
REV 09/01/83
0111E 10, 1
GRANDOVER (WEST) COMMERCIAL - POST-DEV. W/PONDS 2 YR, 06/22/99
20 JOB 1 PASS 1
30 PAGE 1
COMPUTER PROGRAM FOR PROJECT FORMULATION - HYDROLOGY USER NOTES
THE USERS MANUAL FOR THIS PROGRAM IS THE MAY 1982 DRAFT OF TR-20. CHANGES FROM THE 2/14/74 VERSION INCLUDE:
REACH ROUTING - THE MODIFIED ATT-KIN ROUTING PROCEDURE REPLACES THE CONVEX METHOD. INPUT DATA PREPARED FOR
PREVIOUS PROGRAM VERSIONS USING CONVEX ROUTING COEFFICIENTS WILL NOT RUN ON THIS VERSION.
THE PREFERRED TYPE OF DATA ENTRY IS CROSS SECTION DATA REPRESENTATIVE OF A REACH. IT IS RECOMMENDED THAT
THE OPTIONAL CROSS SECTION DISCHARGE-AREA PLOTS BE OBTAINED WHENEVER NEW CROSS SECTION DATA IS ENTERED.
THE PLOTS SHOULD BE CHECKED FOR REASONABLENESS AND ADEQUACY OF INPUT DATA FOR THE COMPUTATION OF "M"
VALUES USED IN THE ROUTING PROCEDURE.
GUIDELINES FOR DETERMINING OR ANALYZING REACH LENGTHS AND COEFFICIENTS (X,M) ARE AVAILABLE IN THE USERS
MANUAL. SUMMARY TABLE 2 DISPLAYS REACH ROUTING RESULTS AND ROUTING PARAMETERS FOR COMPARISON AND CHECKING.
HYDROGRAPH GENERATION - THE PROCEDURE TO CALCULATE THE INTERNAL TIME INCREMENT AND PEAK TIME OF THE UNIT
HYDROGRAPH HAVE BEEN IMPROVED. PEAK DISCHARGES AND TIMES MAY DIFFER FROM THE PREVIOUS VERSION. OUTPUT
HYDROGRAPHS ARE STILL INTERPOLATED, PRINTED, AND ROUTED AT THE USER SELECTED MAIN TIME INCREMENT.
INTERMEDIATE PEAKS - METHOD ADDED TO PROVIDE DISCHARGES AT INTERMEDIATE POINTS WITHIN REACHES WITHOUT ROUTING.
OTHER - THIS VERSION CONTAINS SOME ADDITIONS TO THE INPUT AND NUMEROUS MODIFICATIONS TO THE OUTPUT. USER
OPTIONS HAVE BEEN MODIFIED AND AUGMENTED ON THE JOB RECORD, RAINTABLES ADDED, ERROR AND WARNING MESSAGES
EXPANDED, AND THE SUMMARY TABLES COMPLETELY REVISED. THE HOLDOUT OPTION IS NOT OPERATIONAL AT THIS TIME.
PROGRAM QUESTIONS OR PROBLEMS SHOULD BE DIRECTED TO HYDRAULIC ENGINEERS AT THE SCS NATIONAL TECHNICAL CENTERS:
CHESTER, PA (NORTHEAST) -- 215-499-3933, FORT WORTH, TX (SOUTH) -- 334-5242 (FTS)
LINCOLN, NB (MIDWEST) -- 541-5318 (FTS), PORTLAND, OR (WEST) -- 423-4099 (FTS)
OR HYDROLOGY UNIT, ENGINEERING DIVISION, LANHAM, MD -- 436-7383 (FTS).
PROGRAM CHANGES SINCE MAY 1982:
12/17/82 - CORRECT PEAK RATE FACTOR FOR USER ENTERED DIMHYD
CORRECT REACH ROUTING PEAK TRAVEL TIME PRINTED WITH FULLPRINT OPTION
5/02/83 - CORRECT COMPUTATIONS FOR --
1. DIVISION OF BASEFLOW IN DIVERT OPERATION
2. HYDROGRAPH VOLUME SPLIT BETWEEN BASEFLOW AND ABOVE BASEFLOW
3. CROSS SECTION DATA PLOTTING POSITION
4. INTERMEDIATE PEAK WHEN "FROM" AREA IS LARGER THAN "THRU" AREA
5. STORAGE ROUTED REACH TRAVEL TIME FOR MULTIPEAK HYDROGRAPH
6. ORDERING "FLOW-FREQ" FILE FROM SUMMARY TABLE #3 DATA
7. BASEFLOW ENTERED WITH READHYD
8. LOW FLOW SPLIT DURING DIVERT PROCEDURE #2 WHEN SECTION RATINGS START AT DIFFERENT ELEVATIONS
ENHANCEMENTS ---
1. REPLACE USER MANUAL ERROR CODES (PAGE 4-9 TO 4-11) WITH MESSAGES
2. LABEL OUTPUT HYDROGRAPH FILES WITH CROSS SECTION/STRUCTURE, ALTERNATE AND STORM NO'S
09/01183 - CORRECT INPUT AND OUTPUT ERRORS FOR INTERMEDIATE PEAKS
CORRECT COMBINATION OF RATING TABLES FOR DIVERT
CHECK REACH ROUTING PARAMETERS FOR ACCEPTABLE LIMITS
ELIMINATE MINIMUM REACH TRAVEL TIME WHEN ATT-KIN COEFFICIENT EQUALS ONE

s
TR20 XEQ 6/22/99 GRANDOVER (WEST) COMMERCIAL - POST-DEV. W/PONDS 2 YR, 06/22/99
REV 09/01/83
IXECUTIVE CONTROL OPERATION INCREM MAIN TIME INCREMENT = .08 HOURS
20 JOB 1 PASS 1
30 PAGE 2
RECORD ID 460
{EXECUTIVE CONTROL OPERATION COMPUT FROM XSECTION 1 TO STRUCTURE 18 RECORD ID 470
STARTING TIME = .00 RAIN DEPTH = 3.50 RAIN DURATION= 1.00 RAIN TABLE NO.= 2 ANT. MOIST. COND= 2
ALTERNATE NO.= 1 STORM NO.= 1 MAIN TIME INCREMENT = .08 HOURS
PERATION RUNOFF CROSS SECTION 1
OUTPUT HYDROGRAPH= 1
AREA= .24 SQ MI INPUT RUNOFF CURVE= 90. TIME OF CONCENTRATION= .25 HOURS
INTERNAL HYDROGRAPH TIME INCREMENT= .0333 HOURS

PEAK TIME( HRS) PEAK DISCHARGE(CFS) PEAK ELEVATIO N(FEET)
12.05 428.33 (RUNOFF)
16.44 12.01 (RUNOFF)
17.65 10.03 (RUNOFF)
19.65 8.06 (RUNOFF)
IME(HRS) FIR ST HYDROGR APH POINT = .00 HOU RS TIME INCREMENT = .08 HOURS DRAINAGE AREA = .24 SQ.MI.
4.80 DISCHG .00 .00 .00 .00 .02 .05 .11 .17 .24 .30
5.60 DISCHG .37 .43 .50 .56 .62 .68 .77 .90 1.05 1.16
6.40 DISCHG 1.27 1.36 1.45 1.54 1.63 1.71 1.80 1.88 1.96 2.04
7.20 DISCHG 2.12 2.20 2.28 2.35 2.43 2.50 2.57 2.65 2.72 2.79
8.00 DISCHG 2.86 2.99 3.26 3.52 3.76 4.09 4.42 4.66 4.83 4.97
8.80
9.60 DISCHG
DISCHG 5.10
7.27 5.22
7.73 5.33
8.12 5.46
8.37 5.75
8.57 6.15
8.74 6.46
9.00 6.68
9.47 6.84
9.94 7.00
10.43
10.40 DISCHG 11.30 12.19 12.95 14.29 15.74 16.84 18.34 20.02 21.29 22.88
11.20 DISCHG 24.79 26.31 28.46 31.46 34.80 53.45 95.09 131.87 189.53 301.70
12.00 DISCHG 404.90 419.42 311.48 193.75 132.05 95.71 74.06 62.64 54.92 49.43
12.80 DISCHG 46.26 42.87 39.19 36.86 34.62 32.17 30.61 29.21 27.59 26.47
13.60 DISCHG 25.38 23.81 22.65 21.88 21.01 20.34 19.84 19.07 18.41 17.93
14.40 DISCHG 17.21 16.53 16.06 15.35 14.63 14.22 14.05 13.97 13.94 13.93
15.20 DISCHG 13.93 13.89 13.52 12.85 12.37 12.14 12.04 12.00 11.98 11.98
16.00 DISCHG 11.97 11.98 11.98 11.98 11.99 11.99 11.99 11.89 11.34 10.68
16.80
17.60 DISCHG
DISCHG 10.31
10.03 10.15
10.03 10.07
10.02 10.04
9.76 10.03
9.11 10.02
8.54 10.02
8.26 10.02
8.14 10.02
8.08 10.03
8.06
18.40 DISCHG 8.05 8.04 8.04 8.04 8.04 8.04 8.05 8.05 8.05 8.05
19.20 DISCHG 8.05 8.05 8.05 8.06 8.06 8.06 8.06 8.05 7.79 7.13
20.00 DISCHG 6.56 6.28 6.15 6.10 6.07 6.06 6.05 6.05 6.05 6.05
20.80 DISCHG 6.06 6.06 6.06 6.06 6.06 6.06 6.06 6.06 6.06 6.06
21.60 DISCHG 6.06 6.06 6.06 6.06 6.06 6.07 6.07 6.07 6.07 6.07
22.40 DISCHG 6.07 6.07 6.07 6.07 6.07 6.07 6.07 6.07 6.07 6.08
23.20 DISCHG 6.08 6.08 6.08 6.08 6.08 6.08 6.08 6.07 5.81 5.15
RUNOFF VOLUME ABOVE BASEFLOW = 2.44 WATERSHED INCHES,
377.66 CFS-HRS, 31.21 ACRE-FEET; BASEFLOW = .00 CFS
7
TR20 XEQ 6/22/99 GRANDOVER (WEST) COMMERCIAL - POST-DEV. W/PONDS 2 YR, 06/22/99 20 JOB 1
REV 09/01/83 30
R
PERATION RESVOR STRUCTURE 16
INPUT H YDROGRAPH= 1 OUTPUT HYDROGRAP H= 2
SURFACE ELEVATION= 795.50
PEAK TI ME(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET)
12.1 7 302.25 798.94
T IME(HRS) FIRST HYDROGRAPH POINT = .00 HOURS TIME INCREMENT = .08 HOURS DRAINAGE AREA = .24 SQ.MI.
5.60
5.60 DISCHG
ELEV .00
795.50 .00
795.50 .00
795.50 .00
795.50 .00
795.50 .01
795.51 .01
795.51 .01
795.51 .01
795.51 .01
795.52
6.40 DISCHG .01 .01 .02 .02 .02 .02 .02 .03 .03 .03
6.40 ELEV 795.52 795.52 795.53 795.53 795.53 795.54 795.54 795.54 795.55 795.55
7.20 DISCHG .03 .04 .04 .04 .05 .05 .05 .06 .06 .06
7.20 ELEV 795.56 795.56 795.57 795.57 795.58 795.58 795.59 795.60 795.60 795.61
8.00 DISCHG .07 .07 .08 .08 .09 .09 .10 .10 .11 .12
8.00 ELEV 795.61 795.62 795.63 795.64 795.64 795.65 795.66 795.67 795.68 795.69
8.80 DISCHG .12 .13 .14 .14 .15 .16 .17 .18 .19 .20
8.80 ELEV 795.71 795.72 795.73 795.74 795.75 795.77 795.78 795.80 795.81 795.83
9.60
9.60 DISCHG
ELEV 20
795.84 .21
795.86 .23
795.88 .24
795.89 .25
795.91 .26
795.93 .27
795.95 .28
795.97 .30
795.99 .30
796.02
10.40 DISCHG .31 .31 .32 .33 .33 .34 .35 .36 .37 .38
10.40 ELEV 796.04 796.07 796.09 796.12 796.16 796.19 796.23 796.27 796.32 796.37
11.20 DISCHG .39 .40 .41 .43 .44 .46 .50 6.49 30.02 86.99
11.20 ELEV 796.42 796.47 796.53 796.60 796.67 796.77 796.94 797.18 797.49 797.89
12.00 DISCHG 172.53 261.01 301.27 282.52 236.41 190.48 154.90 125.74 103.18 89.52
12.00 ELEV 798.36 798.77 798.94 798.86 798.66 798.45 798.27 798.12 798.00 797.91
12.80 DISCHG 78.37 69.33 61.76 55.41 50.15 45.67 41.85 38.65 35.91 33.54
12.80 ELEV 797.83 797.77 797.71 797.67 797.63 797.60 797.58 797.55 797.53 797.52
13.60 DISCHG 31.50 30.21 29.15 28.10 27.08 26.10 25.19 24.31 23.46 22.65
13.60 ELEV 797.50 797.49 797.48 797.46 797.45 797.44 797.42 797.41 797.40 797.39
14.40 DISCHG 21.88 21.12 20.38 19.67 18.95 18.26 17.63 17.08 16.61 16.20
14.40 ELEV 797.38 797.37 797.36 797.35 797.34 797.33 797.32 797.32 797.31 797.31
15.20 DISCHG 15.85 15.56 15.27 14.96 14.60 14.24 13.91 13.63 13.38 13.16
15.20 ELEV 797.30 797.30 797.29 797.29 797.28 797.28 797.28 797.27 797.27 797.27
16.00 DISCHG 12.98 12.83 12.70 12.59 12.50 12.42 12.35 12.29 12.19 12.01
16.00
16.80 ELEV
DISCHG 797.26
11.78 797.26
11.54 797.26
11.32 797.26
11.13 797.26
10.96 797.26
10.82 797.26
10.70 797.25
10.59 797.25
10.51 797.25
10.43
16.80 ELEV 797.25 797.24 797.24 797.24 797.24 797.24 797.23 797.23 797.23 797.23
17.60 DISCHG 10.37 10.32 10.27 10.22 10.10 9.90 9.67 9.45 9.25 9.07
17.60 ELEV 797.23 797.23 797.23 797.23 797.23 797.22 797.22 797.22 797.21 797.21
18.40 DISCHG 8.91 8.78 8.67 8.57 8.49 8.42 8.36 8.32 8.28 8.24
18.40 ELEV 797.21 797.21 797.21 797.21 797.20 797.20 797.20 797.20 797.20 797.20
19.20 DISCHG 8.21 8.19 8.17 8.15 8.14 8.12 8.11 8.10 8.08 7.98
19.20 ELEV 797.20 797.20 797.20 797.20 797.20 797.20 797.20 797.20 797.20 797.20
20.00 DISCHG 7.81 7.60 7.39 7.19 7.02 6.88 6.75 6.65 6.56 6.48
20.00 ELEV 797.20 797.19 797.19 797.19 797.19 797.18 797.18 797.18 797.18 797.18
20.80 DISCHG 6.41 6.36 6.31 6.27 6.24 6.21 6.19 6.17 6.15 6.14

1 20.80 ELEV 797.18 797.18 797.18 797.18 797.18 797.17 797.17 797.17 797.17 797.17
PASS 1
PAGE 3

0
TR20 XEQ 6/22/99 GRANDOVER (WEST) COMMERCIAL - POST-DEV. W/PONDS 2 YR, 06/22/99 20 JOB 1 PASS 1
REV 09/01/83 30 PAGE 4
21.60 DISCHG 6.13 6.12 6.11 6.10 6.10 6.09 6.09 6.08 6.08 6.08
21.60 ELEV 797.17 797.17 797.17 797.17 797.17 797.17 797.17 797.17 797.17 797.17
22.40 DISCHG 6.08 6.08 6.08 6.08 6.07 6.07 6.07 6.07 6.07 6.07
22.40 ELEV 797.17 797.17 797.17 797.17 797.17 797.17 797.17 797.17 797.17 797.17
23.20 DISCHG 6.07 6.07 6.07 6.08 6.08 6.08 6.08 6.08 6.06 5.97
23.20 ELEV 797.17 797.17 797.17 797.17 797.17 797.17 797.17 797.17 797.17 797.17
RUNOFF VOLUME ABOVE BASEFLOW = 2.05 WATERSHED INCHES, 318.13 CFS-HRS, 26.29 ACRE-FEET; BASEFLOW = .00 CFS
?PERATION REACH CROSS SECTION 3
INPUT HYDROGRAPH= 2 OUTPUT HYDROGRAPH= 3
LENGTH = 1350.00 FEET INPUT = COEFFICIENTS RELATED TO CROSS SECTIONAL AREA, X= 1.60, M= 1.45
MODIFIED ATT-KIN ROUTING COEFFICIENT = 1.00 PEAK TRAVEL TIME = .00 HOURS
*** WARNING REACH 3 ATT-KIN COEFF.(C) GREATER THAN 0.667, CONSIDER REDUCING MAIN TIME INCREMENT ***
PEAK TIME(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET)
12.17 302.25 (NULL)
IME(HRS) FIRST HYDROGR APH POINT = .00 HOURS TIME INCREMENT = .08 HOURS
5.60 DISCHG .00 .00 .00 .00 .00 .01 .01
6.40 DISCHG .01 .01 .02 .02 .02 .02 .02
7.20 DISCHG .03 .04 .04 .04 .05 .05 .05
8.00 DISCHG .07 .07 .08 .03 .09 .09 .10
8.80 DISCHG .12 .13 .14 .14 .15 .16 .17
9.60
10.40 DISCHG
DISCHG .20
.31 .21
.31 .23
.32 .24
.33 .25
.33 .26
.34 .27
.35
11.20 DISCHG .39 .40 .41 .43 .44 .46 .50
12.00 DISCHG 172.53 261.01 301.27 282.52 236.41 190.48 154.90
12.80 DISCHG 78.37 69.33 61.76 '55.41 50.15 45.67 41.85
13.60 DISCHG 31.50 30.21 29.15 28.10 27.08 26.10 25.19
14.40 DISCHG 21.88 21.12 20.38 19.67 18.95 18.26 17.63
15.20 DISCHG 15.85 15.56 15.27 14.96 14.60 14.24 13.91
16.00 DISCHG 12.98 12.83 12.70 12.59 12.50 12.42 12.35
16.80 DISCHG 11.78 11.54 11.32 11.13 10.96 10.82 10.70
17.60
18.40 DISCHG
DISCHG 10.37
8.91 10.32
8.78 10.27
8.67 10.22
8.57 10.10
8.49 9.90
8.42 9.67
8.36
19.20 DISCHG 8.21 8.19 8.17 8.15 8.14 8.12 8.11
20.00 DISCHG 7.81 7.60 7.39 7.19 7.02 6.88 6.75
20.80 DISCHG 6.41 6.36 6.31 6.27 6.24 6.21 6.19
21.60 DISCHG 6.13 6.12 6.11 6.10 6.10 6.09 6.09
22.40 DISCHG 6.08 6.08 6.08 6.08 6.07 6.07 6.07
23.20 DISCHG 6.07 6.07 6.07 6.08 6.08 6.08 6.08
0
RUNOFF VOLUME ABOVE BASEFLOW = 2.05 WATERSHED INCHES,
RERATION RUNOFF CROSS SECTION 4
OUTPUT HYDROGRAPH= 4
AREA= .03 SQ MI INPUT RUNOFF CURVE= 90.
DRAINAGE AREA =
.01 .01
.03 .03
.06 .06
.10 .11
.18 .19
.28 .30
.36 .37
6.49 30.02
125.74 103.18
38.65 35.91
24.31 23.46
17.08 16.61
13.63 13.38
12.29 12.19
10.59 10.51
9.45 9.25
8.32 8.28
8.10 8.08
6.65 6.56
6.17 6.15
6.08 6.08
6.07 6.07
6.08 6.06
24 SQ.MI.
.01
.03
.06
.12
.20
.30
.38
86.99
89.52
33.54
22.65
16.20
13.16
12.01
10.43
9.07
8.24
7.98
6.48
6.14
6.08
6.07
5.97
318.13 CFS-HRS, 26.29 ACRE-FEET; BASEFLOW = .00 CFS
TIME OF CONCENTRATION= .23 HOURS

d-

u
F.,
7

Ex?l

?4
?i?

T R20 XEQ 6/22/99 GRANDOVER (WEST) COM MERCIAL - POST-DEV. W/PONDS 2 YR, 06/22/99 20 JOB 1 PASS 1
REV 09/01/83 30 PAGE 5
INTERNAL HYDROGRAPN TIME INCREMENT= .03 07 HOURS
PEAK TIME (HRS) PEAK DISCHARGE(CFS) PEAK ELEVATI ON(FEET)
12.04 45.66 (RUNOFF )
9 1ME
HRS
)
( FIRST HYDROGRAPH POINT = .00 HOURS TIME INCREMENT = .08 HOURS DRAINA GE AREA = .03 SQ.MI.
4.80 DISCHG .00 .00 .00 .00 .00 .01 .01 .02 .03 .03
5.60 DISCHG .04 .05 .05 .06 .07 .07 .08 .10 .11 .12
6.40 DISCHG .13 .14 .15 .16 .17 .18 .19 .20 .21 .21
7.20 DISCHG .22 .23 .24 .25 .25 .26 .27 .28 .28 .29
8.00
8.80 DISCHG
DISCHG .30
.53 .31
.55 .34
.56 .37
.57 .40
.61 .43
.65 .47
.68 .49
.70 .51
.72 .52
.73
9.60 DISCHG .76 .81 .85 .88 .90 .91 .94 1.00 1.04 1.10
10.40 DISCHG 1.19 1.29 1.37 1.52 1.67 1.78 1.94 2.12 2.24 2.42
11.20 DISCHG 2.62 2.77 3.01 3.34 3.68 6.03 10.73 14.37 20.85 33.73
12.00 DISCHG 43.92 44.01 30.51 18.30 12.58 9.18 7.17 6.21 5.51 5.01
12.80 DISCHG 4.76 4.39 4.01 3.79 3.56 3.30 3.16 3.01 2.84 2.73
13.60 DISCHG 2.62 2.45 2.34 2.26 2.17 2.11 2.05 1.97 1.91 1.86
14.40 DISCHG 1.78 1.71 1.66 1.58 1.51 1.47 1.46 1.45 1.45 1.45
15.20 DISCHG 1.45 1.45 1.40 1.33 1.28 1.26 1.25 1.25 1.25 1.25
16.00
16.80 DISCHG
DISCHG 1.25
1.07 1.25
1.05 1.25
1.05 1.25
1.04 1.25
1.04 1.25
1.04 1.25
1.04 1.24
1.04 1.17
1.04 1.10
1.04
17.60 DISCHG 1.04 1.04 1.04 1.01 .94 .88 .85 .84 .84 .84
18.40 DISCHG .84 .84 .84 .84 .84 .84 .84 .84 .84 .84
19.20 DISCHG .84 .84 .84 .84 .84 .84 .84 .84 .81 .73
20.00 DISCHG .67 .65 .64 .63 .63 .63 .63 .63 .63 .63
20.80 DISCHG .63 .63 .63 .63 .63 .63 .63 .63 .63 .63
21.60 DISCHG .63 .63 .63 .63 .63 .63 .63 .63 .63 .63
22.40 DISCHG .63 .63 .63 .63 .63 .63 .63 .63 .63 .63
23.20 DISCHG .63 .63 .63 .63 .63 .63 .63 .63 .60 .52
RUNOFF VOLUME ABOVE BASEFLOW = 2.44 WATERSHED INCHES, 39.38 CFS-HRS, 3. 25 ACRE-F EET; BA SEFLOW = .00 CFS
ERATION RESVOR STRUCTURE 17
INPUT HYDROGRAPH= 4 OUTPUT HYDROGRAPH= 5
SURFACE ELEVATION= 814.00
PEAK TIME(HRS) PEAK DISCHARGE(CFS) PEA K ELEVATION(FEET)
12.20 24.67 816.56
ME(HRS) FIRST HYDROGRAPH POINT = .00 HOURS T IME INCREME NT = .08 HOURS DRAINAGE AREA = .03 SQ.MI.
6.40 DISCHG .00 .00 .00 .00 .00 .01 .01 .01 .01 .01
6.40 ELEV 814.00 814.00 814.00 814.00 814.00 814.02 814.02 814.03 814.03 814.03
7.20 DISCHG .01 .01 .01 .01 .01 .01 .01 .01 .01 .02
7.20 ELEV 814.03 814.04 814.04 814.04 814.05 814.05 814.05 814.06 814.06 814.06
8.00 DISCHG .02 .02 .02 .02 .02 .02 .02 .02 .03 .03
8.00
8.80 ELEV
DISCHG 814.07
.03 814.07
.03 814.08
.03 814.08
.03 814.08
.04 814.09
.04 814.10
.04 814.10
.04 814.11
.04 814.11
.05
8.80 ELEV 814.12 814.13 814.13 814.14 814.15 814.16 814.16 814.17 814.18 814.19

I
TR20 XEO 6/22/99 GRANDOVER (WEST) COMMERCIAL - POST-DEV. W/PONDS 2 YR, 06/22/99 20 JOB 1 PASS 1
REV 09/01/83 30 PAGE 6
9.60
9.60 DISCHG
ELEV .OS
814.20 .OS
814.21 .05
814.22 .06
814.23 .06
814.24 .06
814.25 .06
814.26 .07
814.27 .07
814.29 .07
814.30
10.40 DISCHG .08 .08 .08 .09 .09 .10 .10 .11 .12 .12
10.40 ELEV 814.31 814.33 814.35 814.36 814.38 814.40 814.43 814.45 814.48 814.51
11.20 DISCHG .13 .14 .15 .16 .17 .18 .21 .24 .26 .30
11.20 ELEV 814.54 814.57 814.61 814.65 814.69 814.75 814.86 815.02 815.23 815.56
12.00 DISCHG 5.14 17.38 24.20 24.28 20.95 17.75 14.71 12.16 10.16 8.60
12.00 ELEV 815.99 816.37 816.55 816.55 816.47 816.38 816.28 816.21 816.15 816.10
12.80 DISCHG 7.42 6.52 5.78 5.22 4.94 4.68 4.42 4.19 3.96 3.76
12.80 ELEV 816.07 816.04 816.02 816.00 815.98 815.96 815.95 815.93 815.92 815.91
13.60
13.60 DISCHG
ELEV 3.56
815.90 3.38
815.89 3.21
815.88 3.05
815.87 2.90
815.86 2.77
815.85 2.64
815.84 2.53
815.83 2.43
815.83 2.33
815.82
14.40 DISCHG 2.24 2.15 2.07 1.99 1.91 1.84 1.77 1.72 1.67 1.63
14.40 ELEV 815.82 815.81 815.81 815.80 815.80 815.79 815.79 815.79 815.78 815.78
15.20 DISCHG 1.60 1.57 1.55 1.51 1.48 1.44 1.41 1.38 1.36 1.34
15.20 ELEV 815.78 815.78 815.77 815.77 815.77 815.77 815.77 815.76 815.76 815.76
16.00 DISCHG 1.32 1.31 1.30 1.29 1.28 1.28 1.27 1.27 1.26 1.23
16.00 ELEV 815.76 815.76 815.76 815.76 815.76 815.76 815.76 815.76 815.76 815.76
16.80 DISCHG 1.21 1.18 1.16 1.14 1.12 1.11 1.10 1.09 1.08 1.07
16.80 ELEV 815.75 815.75 815.75 815.75 815.75 815.75 815.75 815.75 815.75 815.75
17.60
17.60 DISCHG
ELEV 1.07
815.75 1.06
815.75 1.06
815.75 1.05
815.75 1.04
815.74 1.02
815.74 .99
815.74 .97
815.74 .94
815.74 .93
815.74
18.40 DISCHG .91 .90 .89 .88 .87 .87 .86 .86 .85 .85
18.40 ELEV 815.74 815.74 815.73 815.73 815.73 815.73 815.73 815.73 815.73 815.73
19.20 DISCHG .85 .85 .85 .84 .84 .84 .84 .84 .84 .83
19.20 ELEV 815.73 815.73 815.73 815.73 815.73 815.73 815.73 815.73 815.73 815.73
20.00 DISCHG .80 .78 .75 .73 .72 .70 .69 .68 .67 .66
20.00 ELEV 815.73 815.73 815.73 815.73 815.72 815.72 815.72 815.72 815.72 815.72
20.80 DISCHG .66 .65 .65 .65 .64 .64 .64 .64 .64 .64
20.80 ELEV 815.72 815.72 815.72 815.72 815.72 815.72 815.72 815.72 815.72 815.72
21.60 DISCHG .63 .63 .63 .63 .63 .63 .63 .63 .63 .63
21.60 ELEV 815.72 815.72 815.72 815.72 815.72 815.72 815.72 815.72 815.72 815.72
22.40 DISCHG .63 .63 .63 .63 .63 .63 .63 .63 .63 .63
22.40 ELEV 815.72 815.72 815.72 815.72 815.72 815.72 815.72 815.72 815.72 815.72
23.20 DISCHG .63 .63 .63 .63 .63 .63 .63 .63 .63 .62
23.20 ELEV 815.72 815.72 815.72 815.72 815.72 815.72 815.72 815.72 815.72 815.72
1 RUNOFF VOLUME ABOVE BASEFLOW = 1.77 WATERSHED INCHES, 28.55 CFS-HRS, 2.36 ACRE-FEET; BASEFLOW = .00 CFS
OPERATION REACH CROSS SECTION 6
1 INPUT HYDROGRAPH= 5 OUTPUT HYDROGRAPH= 6
LENGTH = 800.00 FEET INPUT = COEFFICIENTS RELATED TO CROSS SECTIONAL AREA, X= 1.60, M= 1.44
MODIFIED ATT-KIN ROUTING COEFFICIENT = .98 PEAK TRAVEL TIME = .08 HOURS
*** WARNING REACH 6 ATT-KIN COEFF.(C) GREATER THAN 0.667, CONSIDER REDUCING MAIN TIME INCREMENT ***
PEAK TIME(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET)
12.29 24.59 (NULL)
1
I
TR20 XEO
6/22/99
GRANDOVER
(WEST) COMMERCIAL
- POST-DEV. W/PONDS 2
YR, 06/22/99 20
JOB 1 PASS 1
REV 09/01/83 30 PAGE 7
IME(HRS) FIRST HYDROG RAPH POINT = .00 HOURS TIME INCREMENT = .08 HOURS DRAINAGE AREA = .03 SO.MI.
6.40 DISCHG .00 .00 .00 .00 .00 .00 .00 .00 .01 .01
7.20 DISCHG .01 .01 .01 .01 .01 .01 .01 .01 .01 .01
8.00 DISCHG .01 .02 .02 .02 .02 .02 .02 .02 .02 .03
8.80 DISCHG .03 .03 .03 .03 .03 .04 .04 .04 .04 .04
9.60 DISCHG .05 .05 .05 .05 .05 .06 .06 .06 O6 .07
10.40 DISCHG .07 .08 .08 .08 .09 .09 .10 .10 .11 .12
11.20 DISCHG .12 .13 .14 .15 .16 .17 .18 .21 .24 .26
12.00 DISCHG .29 5.02 17.08 24.02 24.27 21.04 17.83 14.78 12.22 10.21
12.80 DISCHG 8.64 7.45 6.54 5.80 5.23 4.95 4.68 4.43 4.19 3.97
13.60 DISCHG 3.76 3.57 3.39 3.21 3.05 2.90 2.77 2.65 2.54 2.43
14.40 DISCHG 2.33 2.24 2.15 2.07 1.99 1.91 1.84 1.77 1.72 1.67
15.20 DISCHG 1.63 1.60 1.57 1.55 1.51 1.48 1.44 1.41 1.38 1.36
16.00 DISCHG 1.34 1.32 1.31 1.30 1.29 1.28 1.28 1.27 1.27 1.25
16.80 DISCHG 1.23 1.21 1.18 1.16 1.14 1.12 1.11 1.10 1.09 1.08
17.60 DISCHG 1.07 1.07 1.06 1.06 1.05 1.04 1.02 .99 .97 .94
18.40 DISCHG .93 .91 .90 .89 .88 .87 .87 .86 .86 .85
19.20 DISCHG .85 .85 .85 .85 .84 .84 .84 .84 .84 .84
20.00 DISCHG .83 .80 .78 .75 .73 .72 .70 .69 .68 .67
20.80 DISCHG .66 .66 .65 .65 .64 .64 .64 .64 .64 .64
21.60 DISCHG .63 .63 .63 .63 .63 .63 .63 .63 .63 .63
22.40 DISCHG .63 .63 .63 .63 .63 .63 .63 .63 .63 .63
23.20 DISCHG .63 .63 .63 .63 .63 .63 .63 .63 .63 .63
RUNOFF VOLUME ABOVE BASEFLOW = 1.76 WATERSHED I NCHES, 28.43 CFS-HRS, 2. 35 ACRE-FEET; BASEFLOW = .00 CFS
ERATION RUNOFF CROSS SECTION 7
OUTPUT HYDROGRAPH= 7
AREA= .03 SQ MI INPUT RUNOFF CURVE= 85. TIME OF CONCENTRATION= .17 HOURS
INTERNAL HYDROGRAPH TIME INCREMENT= .0227 HOURS
IIME(HRS)
7.20
8.00
8.80
9.60
10.40
11.20
12.00
12.80
13.60
14.40
15.20
16.00
16.80
PEAK TIME(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET)
12.01 49.63 (RUNOFF)
FIRST HYDROGRAPH POINT = .00 HOURS TIME INCREMENT = .08 HOURS DRAINAGE AREA = .03 SO.MI.
DISCHG .00 .01 .02 .03 .04 .04 .05 .06 .07 .08
DISCHG .08 .10 .12 .13 .15 .17 .19 .21 .22 .24
DISCHG .25 .26 .28 .29 .32 .36 .38 .39 .41 .43
DISCHG .46 .51 .53 .55 .57 .59 .63 .68 .71 .77
DISCHG .87 .93 1.00 1.16 1.27 1.36 1.54 1.68 1.78 1.98
DISCHG 2.16 2.28 2.59 2.90 3.25 6.91 11.82 14.59 24.72 40.77
DISCHG 49.58 43.30 22.69 13.50 10.09 7.56 6.49 6.04 5.47 5.16
DISCHG 4.98 4.46 4.12 3.98 3.67 3.44 3.35 3.16 2.98 2.92
DISCHG 2.75 2.56 2.49 2.41 2.30 2.27 2.20 2.10 2.05 2.00
DISCHG 1.89 1.83 1.79 1.68 1.61 1.60 1.59 1.59 1.59 1.59
DISCHG 1.59 1.59 1.50 1.41 1.38 1.37 1.37 1.37 1.37 1.37
DISCHG 1.37 1.37 1.37 1.38 1.38 1.38 1.38 1.35 1.24 1.18
DISCHG 1.16 1.15 1.15 1.15 1.15 1.15 1.15 1.15 1.15 1.15

TR20 XEQ 6/22/99
REV 09/01/83
GRANDOVER (WEST) COMMERCIAL - POST-DEV. W/PONDS 2 YR, 06/22/99
17.60
18.40 DISCHG
DISCHG 1.16
.93 1.16
.93 1.15
.93 1.09
.93
19.20 DISCHG .93 .93 .93 .93
20.00 DISCHG .72 .71 .70 .70
20.80 DISCHG .70 .70 .70 .70
21.60 DISCHG .70 .70 .70 .70
22.40 DISCHG .70 .70 .70 .71
23.20 DISCHG .71 .71 .71 .71
RUNOFF VOLUME ABOVE BASEFLOW = 2.01 WATERSHED INCHES,
20 JOB 1 PASS 1
30 PAGE 8
.98 .94 .93 .93 .93 .93
.93 .93 .93 .93 .93 .93
.93 .93 .93 .93 .86 .76
.70 .70 .70 .70 .70 .70
.70 .70 .70 .70 .70 .70
.70 .70 .70 .70 .70 .70
.71 .71 .71 .71 .71 .71
.71 .71 .71 .71 .64 .53
38.98 CFS-HRS, 3.22 ACRE-FEET; BASEFLOW = .00 CFS
RPERATION ADDHYD CROSS SECTION 8
INPUT HYDROGRAPHS= 7,6 OUTPUT HYDROGRAPH= 5
**ELEVATION OUTPUT OPTION REQUESTED BUT NO ELEVATIONS GIVEN***
PEAK TIME(HRS) PEAK DISCHARGE(CFS)
12.03 50.51
T IME(HRS) FIRST HYDROG RAPH POINT = .00 HOURS
6.40
7.20 DISCHG
DISCHG .00
.01 .00
.02 .00
.03
8.00 DISCHG .10 .11 .13
8.80 DISCHG .28 .29 .31
9.60 DISCHG .51 .55 .58
10.40 DISCHG .94 1.01 1.08
11.20 DISCHG 2.28 2.41 2.73
12.00 DISCHG 49.88 48.31 39.77 3
12.80 DISCHG 13.62 11.91 10.66
13.60 DISCHG 6.51 6.13 5.88
14.40 DISCHG 4.22 4.08 3.94
15.20 DISCHG 3.22 3.19 3.07
16.00 DISCHG 2.71 2.69 2.68
16.80 DISCHG 2.39 2.36 2.33
17.60 DISCHG 2.23 2.22 2.22
18.40 DISCHG 1.85 1.84 1.83
19.20 DISCHG 1.78 1.78 1.78 1
20.00
20.80 DISCHG
DISCHG 1.54
1.36 1.51
1.36 1.48
1.35 1
1
21.60 DISCHG 1.34 1.34 1.34 1
22.40 DISCHG 1.34 1.34 1.34 1
23.20 DISCHG 1.34 1.34 1.34 1
RUNOFF VOLUME ABOVE BASEFLOW = 1.90 WATERSHED INCHES,

OP ERATION RESVOR STRUCTURE 1
INPUT HYDROGRAPH= 5 OUTPUT HYDROGRAPH= 4
SURFACE ELEVATION= 798.50
PEAK ELEVATION(FEET)
(NULL)
TIME INCREMENT = .08 HOURS DRAINAGE AREA = .05 SQ.MI.
.00 .00 .00 .00 .00 .01 .01
.04 .05 .06 .06 .07 .08 .09
.15 .17 .19 .21 .23 .25 .26
.32 ..36 .39 .41 .43 .45 .47
.61 .63 .65 .69 .74 .78 .84
1.24 1.36 1.45 1.64 1.78 1.89 2.10
3.05 3.41 7.08 12.00 14.79 24.96 41.03
7.53 34.37 28.60 24.33 20.83 17.69 15.37
.78 8.90 8.39 8.03 7.58 7.17 6.89
.62 5.36 5.17 4.97 4.74 4.58 4.43
.75 3.61 3.51 3.43 3.36 3.31 3.26
.96 2.90 2.85 2.81 2.78 2.75 2.73
.67 2.67 2.66 2.65 2.62 2.50 2.43
.31 2.29 2.27 2.26 2.25 2.24 2.23
.15 2.04 1.98 1.95 1.92 1.89 1.87
.81 1.81 1.80 1.79 1.79 1.79 1.78
.78 1.78 1.77 1.77 1.77 1.70 1.60
.46 1.43 1.42 1.40 1.39 1.38 1.37
.35 1.35 1.35 1.34 1.34 1.34 1.34
.34 1.34 1.34 1.34 1.34 1.34 1.34
.34 1.34 1.34 1.34 1.34 1.34 1.34
.34 1.34 1.34 1.34 1.34 1.27 1.16
67.40 CFS-HRS, 5. 57 ACRE-FEET; BASE FLOW = 9
5
3
2
2
2
2
1
.00 CFS

Sl

TR20 XEQ 6/22/99 GRANDOVER (WEST) COMMERCIAL - POST-DEV. W/PONDS 2 YR, 06/22/99 20 JOB 1 PASS 1
REV 09/01/83 30 PAGE 9
PEAK TIME(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET)
12.69 16.43 799.99
?TIME(HRS) FIRST HYDROGRAPH POINT = .00 HOURS TIME INCR EMENT = .08 HOURS DRAINAGE AREA = .05 SO.MI.
8.80 DISCHG .00 .00 .00 .00 .00 .00 .00 .00 .00 .01
8.80 ELEV 798.50 798.50 798.50 798.50 798.50 798.50 798.50 798.50 798.50 798.53
9.60 DISCHG .01 .01 .01 .01 .01 .01 .01 .01 .01 .01
9.60 ELEV 798.53 798.53 798.53 798.54 798.54 798.54 798.55 798.55 798.55 798.56
10.40 DISCHG .01 .01 .01 .02 .02 .02 .02 .02 .02 .02
10.40 ELEV 798.56 798.57 798.57 798.58 798.58 798.59 798.60 798.60 798.61 798.62
11.20 DISCHG .03 .03 .03 .03 .04 .04 .05 .06 .08 .16
11.20 ELEV 798.63 798.64 798.65 798.67 798.68 798.71 798.75 798.82 798.91 799.05
12.00 DISCHG .37 .59 3.53 7.74 11.12 13.56 15.10 16.00 16.39 16.41
12.00 ELEV 799.23 799.42 799.59 799.72 799.82 799.90 799.95 799.97 799.99 799.99
12.80 DISCHG 16.18 15.77 15.23 14.63 14.00 13.36 12.74 12.15 11.58 11.03
12.80 ELEV 799.98 799.97 799.95 799.93 799.91 799.89 799.87 799.85 799.84 799.82
13.60 DISCHG 10.51 10.01 9.53 9.08 8.65 8.24 7.86 7.50 7.16 6.84
13.60 ELEV 799.80 799.79 799.77 799.76 799.75 799.73 799.72 799.71 799.70 799.69
14.40 DISCHG 6.54 6.26 5.99 5.73 5.48 5.25 5.04 4.84 4.66 4.50
14.40
15.20 ELEV
DISCHG 799.68
4.35 799.67
4.21 799.66
4.08 799.66
3.95 799.65
3.83 799.64
3.72 799.63
3.61 799.63
3.51 799.62
3.42 799.62
3.34
15.20 ELEV 799.61 799.61 799.61 799.60 799.60 799.59 799.59 799.59 799.58 799.58
16.00 DISCHG 3.27 3.20 3.14 3.08 3.03 2.99 2.95 2.91 2.87 2.82
16.00 ELEV 799.58 799.58 799.58 799.57 799.57 799.57 799.57 799.57 799.57 799.57
16.80 DISCHG 2.77 2.73 2.68 2.64 2.60 2.56 2.52 2.49 2.46 2.44
16.80 ELEV 799.56 799.56 799.56 799.56 799.56 799.56 799.56 799.56 799.56 799.55
17.60 DISCHG 2.41 2.39 2.37 2.35 2.32 2.28 2.24 2.21 2.17 2.14
17.60 ELEV 799.55 799.55 799.55 799.55 799.55 799.55 799.55 799.55 799.55 799.54
18.40 DISCHG 2.10 2.07 2.04 2.02 1.99 1.97 1.95 1.93 1.91 1.90
18.40 ELEV 799.54 799.54 799.54 799.54 799.54 799.54 799.54 799.54 799.54 799
54
19.20 DISCHG 1.88 1.87 1.86 1.85 1.84 1.83 1.83 1.82 1.81 .
1.79
19.20 ELEV 799.54 799.54 799.54 799.54 799.54 799.54 799.54 799.54 799.53 799.53
20.00 DISCHG 1.76 1.74 1.71 1.68 1.65 1.62 1.60 1.57 1.55 1.53
20.00 ELEV 799.53 799.53 799.53 799.53 799.53 799.53 799.53 799.53 799.53 799.53
20.80 DISCHG 1.51 1.49 1.48 1.46 1.45 1.44 1.42 1.41 1.41 1.40
20.80 ELEV 799.53 799.53 799.52 799.52 799.52 799.52 799.52 799.52 799.52 799.52
21.60
21.60 DISCHG
ELEV 1.39
799.52 1.38
799.52 1.38
799.52 1.37
799.52 1.37
799.52 1.37
799.52 1.36
799.52 1.36
799.52 1.36
799.52 1.35
799.52
22.40 DISCHG 1.35 1.35 1.35 1.35 1.35 1.34 1.34 1.34 1.34 1.34
22.40 ELEV 799.52 799.52 799.52 799.52 799.52 799.52 799.52 799.52 799.52 799.52
23.20 DISCHG 1.34 1.34 1.34 1.34 1.34 1.34 1.34 1.34 1.34 1.32
23.20 ELEV 799.52 799.52 799.52 799.52 799.52 799.52 799.52 799.52 799.52 799.52
RUNOFF VOLUME ABOVE BASEFLOW = 1.36 WATERSHED INCHES, 48.32 CFS-HRS, 3.99 ACRE-FEET; BASEFLOW = .00 CFS
ERATION REACH CROSS SECTION 10
INPUT HYDROGRAPH= 4 OUTPUT HYDROGRAPH= 6
LENGTH = 800.00 FEET INPUT = COEFFICIENTS RELATED TO CROSS SECTIONAL AREA, X= 1.60, M= 1.44
7

TR20 XEQ 6/22/99 GRANDOVER (WEST) COMMERCIAL - POST-DEV. W/PONDS 2 YR, 06/22/99 20 JOB 1 PASS 1
REV 09/01/83 30 PAGE 10
MODIFIED ATT-KIN ROUTING COEFFICIENT = .92 PEAK TRAVEL TIME _ .08 HOURS
® *** WARNING REACH 10 ATT-KIN COEFF.(C) GREATER THAN 0.667, CONSIDER REDUCING MAIN TIME INCREMENT ***
6u PEAK TIME(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET)
12.78 16.41 (NULL)
IME
HRS
(
) FIR ST HYDROGRAPH POINT = .00 HOURS TIME INCR EMENT = .08 HOURS DRAINAGE AREA = .05 SQ.MI.
9.60 DISCHG .00 .00 .01 .01 .01 .01 .01 .01 .01 .01
10.40 DISCHG .01 .01 .01 .01 .01 .02 .02 .02 .02 .02
11.20 DISCHG .02 .03 .03 .03 .03 .04 .04 .05 .06 .08
12.00 DISCHG .16 .35 .57 3.28 7.36 10.80 13.32 14.95 15.91 16.35
12.80 DISCHG 16.40 16.20 15.80 15.28 14.69 14.06 13.41 12.80 12.20 11.63
13.60 DISCHG 11.08 10.56 10.06 9.57 9.12 8.69 8.28 7.90 7.53 7.19
14.40 DISCHG 6.87 6.57 6.28 6.01 5.75 5.51 5.27 5.06 4.86 4.68
15.20 DISCHG 4.51 4.36 4.22 4.09 3.96 3.84 3.73 3.62 3.52 3.43
16.00 DISCHG 3.35 3.27 3.20 3.14 3.09 3.04 2.99 2.95 2.91 2.87
16.80 DISCHG 2.83 2.78 2.73 2.68 2.64 2.60 2.56 2.53 2.49 2.46
17.60 DISCHG 2.44 2.41 2.39 2.37 2.35 2.32 2.28 2.24 2.21 2.17
18.40
19.20 DISCHG
DISCHG 2.14
1.90 2.11
1.88 2.07
1.87 2.05
1.86 2.02
1.85 1.99
1.84 1.97
1.83 1.95
1.83 1.93
1.82 1.91
1.81
20.00 DISCHG 1.79 1.77 1.74 1.71 1.68 1.65 1.63 1.60 1.58 1.55
20.80 DISCHG 1.53 1.51 1.49 1.48 1.46 1.45 1.44 1.42 1.41 1.41
21.60 DISCHG 1.40 1.39 1.38 1.38 1.37 1.37 1.37 1.36 1.36 1.36
22.40 DISCHG 1.35 1.35 1.35 1.35 1.35 1.35 1.34 1.34 1.34 1.34
23.20 DISCHG 1.34 1.34 1.34 1.34 1.34 1.34 1.34 1.34 1.34 1.34
RUNOFF VOLUME ABOVE BASEFLOW = 1.36 WATERSHED INCHES, 48.20 CFS-HRS, 3. 98 ACRE-F EET; BASEFLOW = .00 CFS
PERATION ADDHYD CROSS SECTION 11
INPUT HYDROGRAPHS= 6,3 OUT PUT HYDROGRAPH= 1
***ELEVATI ON OUTPUT OPTION REQUESTED BUT NO ELEVATIONS GIVEN***
PE
AK TIME(HRS) PE AK DISCHARGE(CFS) P EAK ELEVATIO N(FEET)
12.18 303.16 (NULL)
II ME(HRS) FIRST HYDROGRAP H POINT = .00 HOURS TIME INCRE MENT = .08 HOURS DRAINAGE AREA = .29 SQ.MI.
5.60 DISCHG .00 .00 .00 .00 .00 .01 .01 .01 .01 .01
6.40 DISCHG .01 .01 .02 .02 .02 .02 .02 .03 .03 .03
7.20 DISCHG .03 .04 .04 .04 .05 .05 .05 .06 .06 .06
8.00 DISCHG .07 .07 .08 .08 .09 .09 .10 .10 .11 .12
8.80 DISCHG .12 .13 .14 .14 .15 .16 .17 .18 .19 .20
9.60 DISCHG .20 .22 .23 .24 .25 .27 .28 .29 .31 .31
10.40 DISCHG .32 .33 .33 .34 .35 .36 .37 .37 .39 .40
11.20 DISCHG .41 .43 .44 .46 .47 .50 .54 6.54 30.08 87.07
12.00 DISCHG 172.68 261.36 301.84 28 5.80 243.77 201.28 168.23 140.70 119.09 105.87
12.80 DISCHG 94.77 85.52 77.56 70.69 64.83 59.72 55.26 51.45 48.11 45.17
7
u

T R20 XEQ 6/22/99 GRANDOVER (WEST) COMMERCIAL - POST-DEV. W/PONDS 2 YR, 06/22/99 20 JOB 1 PASS 1
REV 09/01/83 30 PAGE 11
13.60 DISCHG 42.58 40.77 39.20 37.67 36.20 34.79 33.47 32.21 31.00 29.85
14.40 DISCHG 28.75 27.69 26.66 25.68 24.71 23.77 22.91 22.14 21.47 20.88
15.20 DISCHG 20.36 19.92 19.50 19.05 18.56 18.08 17.64 17.24 16.90 16.59
16.00 DISCHG 16.33 16.10 15.90 15.73 15.58 15.46 15.35 15
24 15
10 14
88
16.80 DISCHG 14.60 14.32 14.05 13.81 13.60 13.42 13.26 .
13.12 .
13.00 .
12.90
17.60 DISCHG 12.81 12.73 12.66 12.59 12.45 12.22 11.96 11.69 11.45 11.24
18.40 DISCHG 11.05 10.88 10.74 10.62 10.51 10.42 10.33 10.27 10.21 10.16
19.20 DISCHG 10.11 10.07 10.04 10.01 9.99 9.96 9.95 9.93 9.90 9.79
20.00 DISCHG 9.60 9.36 9.12 8.90 8.71 8.53 8.38 8.25 8.13 8.03
20.80 DISCHG 7.95 7.87 7.81 7.75 7.70 7.66 7.63 7.60 7.57 7.55
21.60 DISCHG 7.53 7.51 7.49 7.48 7.47 7.46 7.45 7.45 7.44 7.44
22.40 DISCHG 7.43 7.43 7.42 7.42 7.42 7.42 7.42 7.42 7.42 7.42
23.20 DISCHG 7.42 7.42 7.42 7.42 7.42 7.42 7.42 7.42 7.39 7.30
RUNOFF VOLUME ABOVE BASEFLOW = 1.92 WA TERSHED INC HES, 366.33 CFS- HRS, 30 .27 ACRE-FEET ; BASEF LOW = .00 CFS
PERATION RUNOFF CROSS SECTION 12
OUTPUT HYDROGRAPH= 2
AREA= .10 SQ MI INPUT RUNOFF CURVE= 82. TIME OF CONCENTRATION= .25 HOURS
® INTERNAL HYDROGRAPH TIME INCREMENT= .0333 HOURS
PEAK TIME(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET)
12.06 133.62 (RUNOFF)
I
ME(HRS) FIRST HYDROGR APH POINT = .00 HOURS TIME INCREMEN T = .08 HOURS DRAINAGE AREA = .10 SQ.MI.
8.00 DISCHG .00 .00 .00 .00 .00 .02 .04 .08 .12 .16
8.80 DISCHG .20 .25 .29 .33 .39 .45 .52 .57 .63 .68
9.60 DISCHG .75 .84 .92 .99 1.06 1.12 1.20 1.30 1.41 1.53
10.40 DISCHG 1.71 1.90 2.08 2.36 2.68 2.94 3.30 3.70 4.04 4.46
11.20
12.00 DISCHG
DISCHG 4.96
122.63 5.40
132.09 5.99
100.15 6.78
63.16 7.69
43.67 12.33
32.06 22.99
25.06 33.32
21.37 51.03
18.85 86.67
17.04
12.80 DISCHG 16.00 14.86 13.62 12.83 12.08 11.24 10.71 10.24 9.68 9.30
13.60 DISCHG 8.93 8.38 7.98 7.72 7.42 7.19 7.02 6.75 6.52 6.36
14.40 DISCHG 6.11 5.87 5.71 5.46 5.20 5.06 5.01 4.98 4.97 4.97
15.20 DISCHG 4.97 4.96 4.83 4.60 4.42 4.35 4.31 4.30 4.29 4.29
16.00 DISCHG 4.29 4.30 4.30 4.30 4.31 4.31 4.31 4.28 4.08 3.85
16.80 DISCHG 3.71 3.66 3.63 3.62 3.62 3.62 3.62 3.62 3.62 3.62
17.60 DISCHG 3.62 3.63 3.62 3.53 3.30 3.09 2.99 2.95 2.93 2.92
18.40 DISCHG 2.92 2.92 2.92 2.92 2.92 2.92 2.92 2.92 2.92 2.92
19.20 DISCHG 2.93 2.93 2.93 2.93 2.93 2.93 2.93 2.93 2.84 60
2
20.00 DISCHG 2.39 2.29 2.24 2.22 2.21 2.21 2.21 2.21 2.21 .
2.21
20.80 DISCHG 2.21 2.21 2.21 2.21 2.21 2.21 2.21 2.21 2.21 2.22
21.60 DISCHG 2.22 2.22 2.22 2.22 2.22 2.22 2.22 2.22 2.22 2.22
22.40 DISCHG 2.22 2.22 2.22 2.22 2.23 2.23 2.23 2.23 2.23 2.23
_ 23.20 DISCHG 2.23 2.23 2.23 2.23 2.23 2.23 2.23 2.23 2.13 1.89
RUNOFF VOLUME ABOVE BASEFLOW = 1.77 WATERSHED INCHES,
114.51 CFS-HRS, 9.46 ACRE-FEET; BASEFLOW = .00 CFS
0
TR20 XEQ 6/22/99 GRANDOVER (WEST) COMMERCIAL - POST-DEV. W/PONDS 2 YR, 06/22/99 20 JOB 1 PASS 1
REV 09/01/83 30 PAGE 12
l
o PERATION ADDHYD CROSS SECTI ON 13
INPUT HYDROGRAPHS= 1,2 OUTPUT HYDROGRAPH= 3
**ELEVAT ION OUTPUT OPTION REQ UESTED BUT NO ELEVATIONS GIVE N***
PEAK TI ME(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATI ON(FEET)
12.1 3 406.01 (NULL)
T IME(HRS) FIRST HYDROGRAPH POINT = .00 HOURS TIME INCREMENT = .03 HOURS DRAINAGE AREA = .39 SQ.MI.
5.60
6.40 DISCHG
DISCHG .00
.01 .00
.01 .00
.02 .00
.02 .00
.02 .01
.02 .01
.02 .01
.03 .01
.03 .01
.03
7.20 DISCHG .03 .04 .04 .04 .05 .05 .05 .06 .06 .06
8.00 DISCHG .07 .07 .08 .08 .09 .11 .14 .18 .23 .28
8.80 DISCHG .33 .38 .43 .48 .54 .61 .69 .75 .81 .88
9.60 DISCHG .95 1.06 1.15 1.24 1.31 1.39 1.47 1.60 1.72 1.84
10.40 DISCHG 2.03 2.22 2.41 2.70 3.02 3.30 3.66 4.08 4.43 4.86
11.20 DISCHG 5.37 5.82 6.43 7.24 8.17 12.83 23.52 39.87 81.10 173.74
12.00 DISCHG 295.31 393.45 401.99 348.95 287.44 233.34 193.29 162.07 137.95 122.92
12.80 DISCHG 110.78 100.39 91.18 83.52 76.91 70.96 65.97 61.69 57.80 54.46
13.60
14.40 DISCHG
DISCHG 51.51
34.86 49.15
33.55 47.19
32.37 45.39
31.14 43.62
29.91 41.98
28.83 40.48
27.91 38.96
27.12 37.52
26.44 36.21
25.85
15.20 DISCHG 25.34 24.88 24.33 23.64 22.99 22.43 21.95 21.54 21.19 20.89
16.00 DISCHG 20.62 20.40 20.20 20.04 19.89 19.77 19.66 19.52 19.18 18.73
16.80 DISCHG 18.32 17.97 17.68 17.43 17.22 17.03 16.88 16.74 16.62 16.52
17.60 DISCHG 16.43 16.36 16.29 16.12 15.74 15.31 14.95 14.64 14.38 14.16
18.40 DISCHG 13.97 13.80 13.66 13.53 13.43 13.33 13.26 13.19 13.13 13.08
19.20 DISCHG 13.04 13.00 12.97 12.94 12.92 12.90 12.88 12.86 12.73 12.39
20.00 DISCHG 11.99 11.65 11.37 11.13 10.92 10.74 10.59 10.45 10.34 10.24
20.80 DISCHG 10.16 10.08 10.02 9.96 9.92 9.88 9.84 9.81 9.78 9.76
21.60 DISCHG 9.74 9.73 9.71 9.70 9.69 9.68 9.67 9.67 9.66 9.66
22.40 DISCHG 9.65 9.65 9.65 9.65 9.65 9.64 9.64 9.64 9.64 9.64
23.20 DISCHG 9.64 9.64 9.65 9.65 9.65 9.65 9.65 9.64 9.53 9.19
RUNOFF VOLUME ABOVE BASEFLOW = 1.89 WATERSHED INCHES, 480.84 CFS-H RS, 39. 74 ACRE-F EET; BASEFLOW = .00 CFS
ERATION RESVOR STRUCTURE 15
INPUT HYDROGRAPH= 3 OUTPUT HYDROGRAPH= 4
SURFACE ELEVATION= 770.86
PEAK TIME(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATIO N(FEET)
12.27 332.97 772.58
IME(HRS) F IRST HYDROGRAPH POINT = .00 HOURS TIME INCREME NT = .08 HOURS DRAINAGE AREA = .39 SQ.MI.
9.60 DISCHG .01 .01 .01 .01 .01 .01 .01 .01 .01 .01
9.60 ELEV 770.88 770.88 770.88 770.89 770.89 770.89 770.89 770.90 770.90 .770.91
® 10.40 DISCHG .01 .02 .02 .02 .02 .02 .02 .03 .03 .03
® 10.40 ELEV 770.91 770.91 770.92 770.93 770.93 770.94 770.95 770.95 770.96 770.97
I
TR20 XEO
6/22/99
GRANDOVER
(WEST) COMMERCIAL -
POST-DEV.
W/PONDS 2
YR, 06/22/99 20
JOB 1 PASS 1
REV 09/01/83 30 PAGE 13
11.20 DISCHG .04 .04 1.52 3.11 4.48 6.27 9.82 16.34 29.49 58.68
11.20 ELEV 770.99 771.00 771.01 771.02 771.03 771.04 771.06 771.10 771.18 771.36
12.00 DISCHG 111.08 191.41 288.62 329.55 324.20 294.13 256.05 219.12 186.56 160.81
12.00 ELEV 771.69 772.10 772.43 772.57 772.55 772.45 772.32 772.19 772.08 771.99
12.80 DISCHG 147.71 135.15 123.42 112.67 103.00 94.34 86.63 79.83 73.85 68.57
12.80 ELEV 771.91 771.83 771.76 771.70 771.64 771.58 771.53 771.49 771.46 771.42
13.60 DISCHG 63.92 59.87 56.39 53.38 50.73 48.37 46.24 44.30 42.49 40.82
13.60 ELEV 771.39 771.37 771.35 771.33 771.31 771.30 771.29 771.27 771.26 771.25
14.40 DISCHG 39.24 37.74 36.32 34.96 33.64 32.37 31.18 30.09 29.10 28.22
14.40 ELEV 771.24 771.23 771.22 771.22 771.21 771.20 771.19 771.19 771.18 771.17
15.20 DISCHG 27.44 26.74 26.11 25.47 24.83 24.20 23.60 23.05 22.55 22.10
15.20 ELEV 771.17 771.16 771.16 771.16 771.15 771.15 771.15 771.14 771.14 771.14
16.00 DISCHG 21.70 21.34 21.03 20.76 20.52 20.32 20.14 19.97 19.79 19.54
16.00 ELEV 771.13 771.13 771.13 771.13 771.13 771.13 771.12 771.12 771.12 771.12
16.80 DISCHG 19.24 18.91 18.59 18.28 18.00 17.74 17.50 17.30 17.11 16.95
16.80 ELEV 771.12 771.12 771.11 771.11 771.11 771.11 771.11 771.11 771.11 771.10
17.60 DISCHG 16.81 16.69 16.58 16.47 16.31 16.07 15.79 15.50 15.20 14.92
17.60 ELEV 771.10 771.10 771.10 771.10 771.10 771.10 771.10 771.10 771.09 771.09
18.40 DISCHG 14.67 14.43 14.22 14.04 13.87 13.72 13.60 13.48 13.39 13.30
18.40 ELEV 771.09 771.09 771.09 771.09 771.09 771.08 771.08 771.08 771.08 771.08
19.20 DISCHG 13.23 13.17 13.11 13.06 13.02 12.99 12.96 12.93 12.89 12.79
19.20 ELEV 771.08 771.08 771.08 771.08 771.08 771.08 771.08 771.08 771.08 771.08
20.00 DISCHG 12.61 12.38 12.12 11.86 11.61 11.38 11.16 10.97 10.80 10.65
20.00 ELEV 771.08 771.08 771.07 771.07 771.07 771.07 771.07 771.07 771.07 771.07
20.80 DISCHG 10.51 10.40 10.29 10.20 10.12 10.06 10.00 9.95 9.90 9.86
20.80 ELEV 771.06 771.06 771.06 771.06 771.06 771.06 771.06 771.06 771.06 771.06
21.60 DISCHG 9.83 9.80 9.78 9.76 9.74 9.72 9.71 9.70 9.69 9.68
21.60 ELEV 771.06 771.06 771.06 771.06 771.06 771.06 771.06 771.06 771.06 771.06
22.40 DISCHG 9.67 9.67 9.66 9.66 9.65 9.65 9.65 9.65 9.65 9.65
22.40 ELEV 771.06 771.06 771.06 771.06 771.06 771.06 771.06 771.06 771.06 771.06
23.20 DISCHG 9.65 9.65 9.65 9.65 9.65 9.65 9.65 9.65 9.63 9.55
23.20 ELEV 771.06 771.06 771.06 771.06 771.06 771.06 771.06 771.06 771.06 771.06
RUNOFF VOLUME ABOVE BASEFLOW = 1.86 WATERSHED INCHES, 473.23 CFS-HRS, 39.11 ACRE-FEET; BASEFLOW = .00 CFS
I
OPERATION REACH CROSS SECTION 15
INPUT HYDROGRAPH= 4 OUTPUT HYDROGRAPH= 5
LENGTH = 1200.00 FEET INPUT = COEFFICIENTS RELATED TO CROSS SECTIONAL AREA, X= .85, M= 1.38
MODIFIED ATT-KIN ROUTING COEFFICIENT = .84 PEAK TRAVEL TIME = .16 HOURS
*** WARNING REACH 15 ATT-KIN COEFF.(C) GREATER THAN 0.667, CONSIDER REDUCING MAIN TIME INCREMENT ***
PEAK TIME(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET)
12.37 325.63 (NULL)
IME(HRS) FIRST HYDROGRAPH POINT = .00 HOURS TIME INCREMENT = .08 HOURS DRAINAGE AREA = .39 SQ.MI.
9.60 DISCHG .00 .00 .00 .00 .01 .01 .01 .01 .01 .01
10.40 DISCHG .01 .01 .01 .02 .02 .02 .02 .02 .03 .03
11.20 DISCHG .03 .04 .04 1.29 2.82 4.21 5.94 9.20 15.21 27.23

T R20 XEQ 6/22/99 GRANDOVER (WEST) COMMERCIAL - POST-DEV. W/PONDS 2 YR, 06/22/99 20 JOB 1 PASS 1
REV 09/01/83 30 PAGE 14
12.00
12.80 DISCHG
DISCHG 53.69
165.87 101.99
150.58 177.25
137.60 270.98
125.67 320.27
114.73 323.58
104.86 298.79
96.00 262.82
88.11 226.04
81.14 192.81
75.00
13.60 DISCHG 69.59 64.82 60.66 57.06 53.96 51.24 48.83 46.65 44.67 42.84
14.40 DISCHG 41.14 39.54 38.03 36.59 35.21 33.88 32.61 31.40 30.29 29.29
15.20 DISCHG 28.39 27.59 26.88 26.23 25.59 24.95 24.32 23.71 23.15 22.64
16.00 DISCHG 22.18 21.77 21.41 21.09 20.81 20.57 20.36 20.17 20.00 19.82
16.80 DISCHG 19.58 19.29 18.97 18.65 18.34 18.05 17.79 17.55 17.34 17.15
17.60 DISCHG 16.98 16.84 16.71 16.60 16.49 16.33 16.11 15.84 15.55 15.26
18.40 DISCHG 14.98 14.72 14.48 14.26 14.07 13.90 13.75 13.62 13.51 13.41
19.20 DISCHG 13.32 13.24 13.18 13.12 13.07 13.03 12.99 12.96 12.94 12.90
20.00 DISCHG 12.81 12.64 12.42 12.17 11.91 11.66 11.42 11.20 11.01 10.83
20.80 DISCHG 10.68 10.54 10.42 10.31 10.22 10.14 10.07 10.01 9.95 9.91
21.60 DISCHG 9.87 9.84 9.81 9.78 9.76 9.74 9.72 9.71 9.70 9.69
22.40 DISCHG 9.68 9.67 9.67 9.66 9.66 9.65 9.65 9.65 9.65 9.65
23.20 DISCHG 9.65 9.65 9.65 9.65 9.65 9.65 9.65 9.65 9.65 9.63
RUNOFF VOLUME ABOVE BASEFLOW = 1.85 WATERSHED INCHES, 472.75 CFS- HRS, 39.07 ACRE-F EET; BASE FLOW = .00 CFS

OPERATION RUNOFF CROSS SECTION 16
OUTPUT H
AREA= YDROGRAPH=
.14 SQ MI 6
INPUT RUNOFF CURVE=
83. T
IME OF CONCENTRATION=
.17 HOURS
INTERNAL HYDROGRAPH TIME INCREMENT= .0227 HOURS
PEAK TIM E(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET)
12.01 214.54 (RUNOFF)
16.44 6.19 (RUNOFF)
17.67 5.19 (RUNOFF)
19.66 4.19 (RUNOFF)
TTI ME(HRS) F IRST HYDROGR APH POINT = .00 HOURS TIME INCREMENT = .08 HOURS DRAINAGE AREA = .14 SQ.MI.

8.00 DISCHG .02 .05 .09 .14 .20 .27 .34 .40 .47 .53
8.80 DISCHG .59 .65 .71 .78 .89 1.01 1.09 1.17 1.24 1.32
9.60 DISCHG 1.45 1.61 1.72 1.82 1.91 1.99 2.13 2.33 2.48 2.69
10.40 DISCHG 3.07 3.32 3.61 4.22 4.66 5.02 5.74 6.32 6.75 7.57
11.20 DISCHG 8.31 8.84 10.11 11.39 12.86 27.68 47.94 59.96 103.50 173.54
12.00 DISCHG 214.10 188.68 99.30 59.33 44.50 33.40 28.73 26.77 24.23 22.90

1 12.80
13.60 DISCHG
DISCHG 22.11
12.26 19.80
11.42 18.31
11.11 17.70
10.74 16.32
10.28 15.29
10.11 14.91
9.83 14.05
9.35 13.28
9.15 13.00
8.92
14.40 DISCHG 8.42 8.19 7.99 7.49 7.21 7.13 7.11 7.11 7.11 7.12
15.20 DISCHG 7.12 7.10 6.70 6.31 6.18 6.15 6.14 6.14 6.14 6.15
16.00 DISCHG 6.15 6.15 6.16 6.16 6.17 6.17 6.17 6.05 5.55 5.28
16.80 DISCHG 5.20 5.17 5.17 5.17 5.17 5.17 5.17 5.18 5.18 5.18
17.60 DISCHG 5.18 5.19 5.18 4.88 4.42 4.24 4.18 4.17 4.16 4.16
18.40 DISCHG 4.16 4.17 4.17 4.17 4.17 4.17 4.17 4.18 4.18 4.18
19.20 DISCHG 4.18 4.18 4.18 4.19 4.19 4.19 4.19 4.18 3.88 3.41
20.00 DISCHG 3.23 3.17 3.16 3.15 3.15 3.15 3.15 3.15 3.15 3.15
20.80 DISCHG 3.16 3.16 3.16 3.16 3.16 3.16 3.16 3.16 3.16 3.16
21.60 DISCHG 3.16 3.17 3.17 3.17 3.17 3.17 3.17 3.17 3.17 3.17
22.40 DISCHG 3.17 3.17 3.17 3.17 3.18 3.18 3.18 3.18 3.18 3.18
TR20 XEQ 6/22/99 GRANDOVER (WEST) COMMERCIAL - POST-DEV. W/PONDS 2 YR, 06/22/99 20 JOB 1 PASS 1
REV 09/01/83 30 PAGE 15
23.20 DISCHG 3.18 3.18 3.18 3.18 3.18 3.18 3.19 3.18 2.87 2.39
RUNOFF VOLUME ABOVE BASEFLOW = 1.86 WATERSHED INCHES, 167.64 CFS-HRS, 13 .85 ACRE-FEET; BASEFLOW = .00 CFS
1
PERATION ADDHYD CR OSS SECTI ON 17
INPUT HYDR OGRAPHS= 5,6 OUTPUT HYDROGRAPH= 7
**ELEVAT ION OUTPUT O PTION REQUESTED BUT NO ELEVATIONS GIVE N***
PEAK TIME( HRS) PE AK DISCHARGE(CFS) PE AK ELEVATION(FEET)
12.09
12.35 290.92
366.87 (NULL)
(NULL)

TIME(HRS) FIRST HYDROG RAPH POINT = .00 HOURS TIME INCREM ENT = .08 HOURS DRAINAGE AREA = .53 SQ.MI.
8.00 DISCHG .02 .05 .09 .14 .20 .27 .34 .40 .47 .53
8.80 DISCHG .59 .65 .71 .78 .89 1.01 1.09 1.17 1.24 1.32
9.60 DISCHG 1.45 1.61 1.72 1.82 1.91 2.00 2.14 2.34 2.49 2.70
10.40 DISCHG 3.08 3.33 3.63 4.23 4.67 5.04 5.76 6.34 6.77 7.60
11.20 DISCHG 8.34 8.88 10.15 12.68 15.67 31.90 53.88 69.16 118.71 200.77
12.00 DISCHG 267.80 290.67 276.54 330.31 364.77 356.97 327.52 289.59 250.27 215.71
12.80 DISCHG 187.98 170.39 155.91 143.37 131.05 120.15 110.91 102
17 94
42 88
00
13.60 DISCHG 81.84 76.24 71.77 67.81 64.24 61.35 58.65 .
56.00 .
53.82 .
51.75
14.40 DISCHG 49.56 47.73 46.01 44.07 42.43 41.02 39.72 38.51 37.41 36.41
15.20 DISCHG 35.51 34.68 33.58 32.54 31.78 31.10 30.45 29.85 29.29 28.79
16.00 DISCHG 28.33 27.93 27.57 27.25 26.98 26.74 26.53 26.22 25.56 25.10
16.80 DISCHG 24.78 24.46 24.14 23.82 23.51 23.22 22.96 22.72 22.52 22.33
17.60 DISCHG 22.17 22.02 21.89 21.48 20.90 20.57 20.30 20.01 19.71 19.42
18.40
19.20 DISCHG
DISCHG 19.14
17.50 18.88
17.43 18.65 18.43
17.36 17.31 18.24
17.26 18.07
17.22 17.93
17.19 17.80
17.15 17.68
16.82 17.59
16.31
20.00 DISCHG 16.04 15.82 15.58 15.32 15.06 14.81 14.57 14.36 14.16 13.99
20.80 DISCHG 13.83 13.70 13.58 13.47 13.38 13.30 13.23 13.17 13.12 13.07
21.60 DISCHG 13.03 13.00 12.97 12.95 12.93 12.91 12.89 12.88 12.87 12.86
22.40 DISCHG 12.85 12.85 12.84 12.84 12.83 12.83 12.83 12.83 12.83 12.83
23.20 DISCHG 12.83 12.83 12.83 12.83 12.83 12.83 12.83 12.82 12.52 12.03
RUNOFF VOLUME ABOVE BASEFLOW = 1
85 WATERSHED INCHES 640
38 CFS-HRS
52 92 ACRE-FEET
BASEFLOW 00
. , . ,
. ; = .
CFS
ERATION RESVOR STR UCTURE 18
INPUT HYDROGRAPH= 7 OUTPUT HYDROGRAPH= 1
SURFACE ELE VATION= 753.50

PEAK TIME(H RS) PEAK DISCHARGE(CFS) PEAK ELEVATIO N(FEET)
12.57 285.32 757.39
ME(HRS) FIRS T HYDROGRAPH POINT = .00 HOURS TIME INCREME NT = .08 HOURS DRAINAGE AREA = .53 SQ.MI.
8.00 DISCHG .00 .00 .00 .00 .00 .00 .01 .01 .01 .02
8.00
8.80 ELEV
DISCHG 753.50
.02 753.50
.03 753.50 753.50
.03 .04 753.50
.04 753.50
.05 753.50
.06 753.51
07 753.51
08 753.51
.09
. .
I
TR20 XEO
6/22/99
GRANDOVER
(WEST) COMMERCIAL -
POST-DEV.
W/PONDS 2
YR, 06/22/99 20
JOB 1
PASS 1
REV 09/01/83 30 PAGE 16
8.80 ELEV 753.51 753.51 753.52 753.52 753.52 753.53 753.53 753.54 753.54 753.55
9.60 DISCHG .10 .11 .12 .13 .15 .16 .18 .19 .21 .23
9.60 ELEV 753.55 753.56 753.56 753.57 753.58 753.59 753.59 753.60 753.61 753.62
10.40 DISCHG .25 .28 .30 .33 .36 .40 .44 .49 .53 .59
10.40 ELEV 753.63 753.65 753.66 753.67 753.69 753.71 753.73 753.76 753.78 753.81
11.20 DISCHG .65 .71 .78 .87 .98 1.23 1.69 2.35 3.11 11.86
11.20 ELEV 753.84 753.87 753.91 753.96 754.01 754.08 754.22 754.41 754.70 755.15
12.00 DISCHG 46.29 97.12 138.50 180.24 223.18 256.76 277.61 285.16 281.44 269.62
12.00 ELEV 755.65 756.13 756.46 756.74 757.03 757.22 757.35 757.39 757.37 757.30
12.80 DISCHG 253.09 235.07 217.46 199.95 183.74 168.73 154.99 142.65 132.81 123.58
12.80
13.60 ELEV
DISCHG 757.20
115.00 757.10
107.02 756.99
99.70 756.88
93.06 756.77
87.06 756.67
81.68 756.58
76.95 756.49
72.70 756.41
68.85 756.34
65.38
13.60 ELEV 756.27 756.21 756.15 756.10 756.05 756.01 755.97 755.92 755.88 755.85
14.40 DISCHG 62.19 59.26 56.58 54.08 51.74 49.57 47.58 45.75 44.06 42.51
14.40 ELEV 755.82 755.79 755.76 755.73 755.71 755.69 755.67 755.65 755.63 755.62
15.20 DISCHG 41.09 39.80 38.57 37.38 36.25 35.21 34.25 33.36 32.54 31.78
15.20 ELEV 755.60 755.59 755.58 755.56 755.55 755.54 755.53 755.52 755.51 755.51
16.00 DISCHG 31.11 30.73 30.35 29.98 29.62 29.27 28.94 28.61 28.27 27.90
16.00 ELEV 755.50 755.49 755.49 755.48 755.47 755.47 755.46 755.45 755.45 755.44
16.80 DISCHG 27.52 27.16 26.79 26.44 26.09 25.74 25.41 25.08 24.77 24.47
16.80
17.60 ELEV
DISCHG 755.43
24.19 755.43
23.93 755.42
23.68 755.41
23.43 755.41
23.14 755.40
22.84 755.40
22.54 755.39
22.23 755.38
21.93 755.38
21.63
17.60 ELEV 755.37 755.37 755.36 755.36 755.35 755.35 755.34 755.34 755.33 755.33
18.40 DISCHG 21.34 21.04 20.75 20.47 20.20 19.95 19.70 19.47 19.25 19.04
18.40 ELEV 755.32 755.32 755.31 755.31 755.30 755.30 755.29 755.29 755.28 755.28
19.20 DISCHG 18.85 18.68 18.52 18.37 18.23 18.10 17.99 17.89 17.77 17.62
19.20 ELEV 755.28 755.27 755.27 755.27 755.26 755.26 755.26 755.26 755.26 755.25
20.00
20.00 DISCHG
ELEV 17.44
755.25 17.25
755.25 17.05
755.24 16.85
755.24 16.64
755.24 16.42
755.23 16.20
755.23 15.98
755.22 15.76
755.22 15.55
755.22
20.80 DISCHG 15.34 15.14 14.95 14.77 14.60 14.44 14.29 14.16 14.03 13.91
20.80 ELEV 755.21 755.21 755.20 755.20 755.20 755.19 755.19 755.19 755.19 755.19
21.60 DISCHG 13.80 13.70 13.61 13.53 13.45 13.39 13.32 13.27 13.22 13.17
21.60 ELEV 755.18 755.18 755.18 755.18 755.18 755.18 755.17 755.17 755.17 755.17
22.40 DISCHG 13.13 13.10 13.07 13.04 13.01 12.99 12.97 12.95 12.94 12.92
22.40 ELEV 755.17 755.17 755.17 755.17 755.17 755.17 755.17 755.17 755.17 755.17
23.20 DISCHG 12.91 12.90 12.89 12.88 12.88 12.87 12.86 12.86 12.84 12.76
23.20 ELEV 755.17 755.17 755.17 755.17 755.17 755.17 755.17 755.17 755.17 755.16
RUNOFF VOLUME ABOVE BASEFLOW = 1.74 WAT ERSHED INCHES, 600.32 CFS-HRS, 49. 61 ACRE-FEET; BASEFLOW = .00 CFS
ECUTIVE CONTROL OPERATION ENDCMP COM PUTATIONS COMPLETED FOR PASS 1 RECORD ID 480
1
EX
1
ECUTIVE
CONTROL OPERATION ENDJOB
RECORD ID
490

TR20 XEO 6/22/99 GRANDOVER (WEST) COMME RCIAL - POST-DEV. W/PONDS 2 YR, 06/22/99 20 JOB 1 SUMMARY
REV 09101/83 30 PAGE 17
UMMARY T ABL E 1 - SEL ECTED RESU LTS OF STANDARD AND EXECUTIVE CONTROL INSTRUCTIONS IN THE ORDER PERFORMED
(A STAR(*) AF TER THE PEAK DI SCHARGE TIME AND RATE (CFS) VALUES INDICATES A FLAT TOP HYDROGRAPH
A QUESTION M ARK(?) INDICATE S A HYDROGRAPH WITH PEAK AS LAST POINT.)
IECTION/ STANDARD RAIN ANTEC MAIN PRECIPITATION PEAK DISCHARGE
STRUCTURE CONTROL DRAINAGE TABLE MOIST TIME ------------------------- RUNOFF ------- --------- --------------- -------
ID OPERATION AREA # COND INCREM BEGIN AMOUNT DURATION AMOUNT ELEVATI ON TIME RATE RATE
(SO MI) (HR) (HR) (IN) (HR) (IN) (FT) (HR) (CFS) (CSM)
ALTERNATE 1 STORM 1
,SECTION 1 RUNOFF .24 2 2 .08 .0 3.50 24.00 2.44 --- 12.05 428.33 1784.7
STRUCTURE
R ECTION 16
3 RESVOR
REACH .24
.24 2
2 2
2 .08
.08 .0
.0 3.50
3.50 24.00
24.00 2.05
2.05 798.94
--- 12.17
12.17 302.25
302.25 1259.4
1259.4
ECTION 4 RUNOFF .03 2 2 .08 .0 3.50 24.00 2.44 --- 12.04 45.66 1826.6
STRUCTURE 17 RESVOR .03 2 2 .08 .0 3.50 24.00 1.77 816.56 12.20 24.67 986.7
ECTION
R 6 REACH .03 2 2 .08 .0 3.50 24.00 1.76 --- 12.29 24.59 983.7
ECTION 7 RUNOFF .03 2 2 .08 .0 3.50 24.00 2.01 --- 12.01 49.63 1654.5
XSECTION
RUCTURE
I 8
1 ADDHYD
RESVOR .05
.05 2
2 2
2 .08
.08 .0
.0 3.50
3.50 24.00
24.00 1.90
1.36 ---
799.99 12.03
12.69 50.51
16.43 918.4
298.7
ECTION 10 REACH .05 2 2 .08 .0 3.50 24.00 1.36 --- 12.78 16.41 298.4
ECTION 11 ADDHYD .29 2 2 .08 .0 3.50 24.00 1.92 --- 12.18 303.16 1027.7
ECTION 12 RUNOFF .10 2 2 .08 .0 3.50 24.00 1.77 12.06 133.62 1336.2
XSECTION 13 ADDHYD .39 2 2 .08 .0 3.50 24.00 1.89 --- 12.13 406.01 1027.9
RUCTURE 15 RESVOR .39 2 2 .08 .0 3.50 24.00 1.86 772.58 12.27 332.97 843.0
ECTION 15 REACH .39 2 2 .08 .0 3.50 24.00 1.85 --- 12.37 325.63 824.4
XSECTION
ECTION
I 16
17 RUNOFF
ADDHYD .14
.53 2
2 2
2 .08
.08 .0
.0 3.50
3.50 24.00
24.00 1.86
1.85 ---
--- 12.01
12.35 214.54
366.87 1532.4
685.7
RUCTURE 18 RESVOR .53 2 2 .08 .0 3.50 24.00 1.74 757.39 12.57 285.32 533.3

1
TR20 XEQ 6/22/99 GRANDOVER (WEST) COMMERCIAL - POST-DEV. W/PONDS 2 YR, 06/22/99 20 JOB 1 SUMMARY
S REV 09/01/83 30 PAGE 18
IUMMARY TABLE 2 - SELECTED MODIFIED ATT-KIN REACH ROUTINGS IN ORDER OF STANDARD EXECUTIVE CONTROL INSTRUCTIONS
(A STAR(*) AFTER VOLUME ABOVE BASE(IN) INDICATES A HYDROGRAPH TRUNCATED AT A VALUE EXCEEDING BASE + 10% OF PEAK
A QUESTION MARK(?) AFTER COEFF.(C) INDICATES PARAMETERS OUTSIDE ACCEPTABLE LIMITS, SEE PREVIOUS WARNINGS)
HYDROGRAPH INFORMATION ROUTING PARAMETERS PEAK
OUTFLOW+ VOLUME MAIN ITER- Q AND A PEAK S/Q ATT- TRAVEL TIME
SEC REACH INFLOW OUTFLOW INTERV.AREA BASE- ABOVE TIME ATION EQUATION LENGTH RATIO @PEAK KIN STOR- KINE-
ID LENGTH PEAK TIME PEAK TIME PEAK TIME FLOW BASE INCR # COEFF POWER FACTOR 0/I (K) COEFF AGE MATIC
(FT) (CFS) (HR) (CFS) (HR) (CFS) (HR) (CFS) (IN) (HR) (X) (M) (K*) (Q*) (SEC) (C) (HR) (HR)
ALTERNATE 1 STORM 1
3 1350 301 12.2 301 12.2 --- --- 0 2.05 .08 0 1.60 1.45 .011 1.000 115 1.00? .00 .00
6 800 24 12.2 24 12.3 --- --- 0 1.77 .08 1 1.60 1.44 .014 1.000 151 .98? .08 .04
10 800 16 12.7 16 12.8 --- --- 0 1.36 .08 1 1.60 1.44 .004 1.000 170 .92? .08 .05
15 1200 330 12.2 324 12.4 --- --- 0 1.86 .08 1 .850 1.38 .017 .982 198 .84? .16 .06
J
TR20 XEQ 6/22/99 GRANDOVER (WEST) COMMERCIAL - POST-DEV. W/PONDS 2 YR, 06/22/99 20 JOB 1 SUMMARY
REV 09/01/83 30 PAGE 19
UMMARY TABLE 3 - DISCHARGE (CFS) AT XSECTIONS AND STRUCTURES FOR ALL STORMS AND ALTERNATES
XSECTION/ DRAINAGE
TRUCTURE AREA STORM NUMBERS..........
ID (SQ MI) 1
I STRUCTURE 18 .53
ALTERNATE 1 285.32
I STRUCTURE 17 .03
ALTERNATE 1 24.67
STRUCTURE 16 .24
ALTERNATE 1 302.25
STRUCTURE 15 .39
ALTERNATE 1 332.97
STRUCTURE 1 .05
ALTERNATE 1 16.43
XSECTION 1 .24
ALTERNATE
} 1 428.33
XSECTION 3 .24
ALTERNATE 1 302.25
"
SECTION 4 .03
ALTERNATE 1 45.66
[SECTION 6 .03
ALTERNATE 1 24.59
®(SECTION 7 .03
ALTERNATE 1 49.63
&SECTION 8 .05
ALTERNATE 1 50.51
(SECTION 10 .05
ALTERNATE 1 16.41
SECTION 11 .29
1 ALTERNATE 1 303.16
XSECTION 12 .10
ALTERNATE 1 133.62
7
J
1
TR20 XEO 6/22/99 GRANDOVER (WEST) COMMERCIAL - POST-DEV. W/PONDS 2 YR, 06/22/99 20 JOB 1 SUMMARY
1 REV 09/01/83 30 PAGE 20
IUMMARY TABLE 3 - DISCHARGE (CFS) AT XSECTIONS AND STRUCTURES FOR ALL STORMS AND ALTERNATES
XSECTION/ DRAINAGE
TRUCTURE AREA STORM NUMBERS..........
ID (SO MI) 1
XSECTION 13 .39
ALTERNATE 1 406.01
XSECTION 15 .39
ALTERNATE 1 325.63
XSECTION 16 .14
ALTERNATE 1 214.54
XSECTION 17 .53
1 ALTERNATE 1 366.87

?11 i
J
l
END OF 1 JOBS IN THIS RUN
Stop - Program terminated.
J
0
n
u
C
n
L
f.

l
*********************
*
*
*********************************************************
* * TR 20 S/N
* * HMVersion 3.40
* TR 20 * Date 6/22/99
* * Time 8:49:27
* Project Formulation Hydrology * Input file grand10.t20
* * Output file grandl0.out
* *
*
* * *

xxxxxxx xxxxxx xxxxx xxxxx
x x x x x x xx
x x x x x x x
x xxxxxx x x x x
x x x x x x x
x x x x xx x
x x x xxxxxxx xxxxx
...........................................
...........................................
...........................................
...........................................
... Full Microcomputer Implementation :..
by ...
Haestad Methods, Inc. ..
...........................................
...........................................
...........................................
...........................................
37 Brookside Road * Waterbury, Connecticut 06708 * [phone]
LI
L;4

S
******************80-80 LIST OF INPUT DATA FOR TR-20 HYDROLOGY******************
?I08 TR-20 FULLPRIN T 10
TITLE 001 GRANDOVER (WEST) COMMERCIAL- POST-DEV. W/PONDS 10 YR, 06/22/99 20
TITLE 30
3 STRUCT 15 40
8 770.86 0.00 0.00 50
8 771.00 0.04 0.419 60

8 772.00 162.00 3.477 70
8 773.00 458.21 6.654 80
8 774.00 841.78 9.951 90
8 75.000 1296.00 13.370 100
8 775.65 1735.68 16.891 110
8 120
9 ENDTBL 140
1 3 STRUCT 16 170
8 795.5 0.00 0.00 171
8 796.0 0.30 1.440 172

'8 797.1 0.53 4.699 173
8 797.5 30.95 5.917 174
8 798.0 103.12 7.462 175
8 798.5 199.51 9.035 176
8 799.0 315.07 10.635 177
8 800.0 593.51 13.916 178

- 801.0 925.22 17.308 179

t 180
a 181
8 182
ENDTBL 251
STRUCT 17 252
8 814.0 0.00 0.00 253
815.0 0.24 0.505 254
815.7 0.31 0.884 255
8 816.0 5.26 1.053 256
816.5 21.84 1.343 257

817.0 44.88 1.645 258
818.0 105.11 2.284 259
8 819.0 180.37 2.970 260
820.0 368.08 3.705 261
ENDTBL 262
3 STRUCT 18 270
753.50 0.00 0.00 271
754.00 0.95 0.78 272
754.50 2.67 1.81 273
8 755.00 3.77 2.83 274
755.50 31.14 4.17 275
756.00 80.33 5.51 276
8 756.50 143.75 7.19 277

d-
IJ

**********************80-80 LIST OF INPUT DATA (CON TINUED)**********************
8
757.00 218.66 8.86 278
8 757.50 303.52 10.88 279
8 758.00 397.25 12.90 280
8 758.50 499.09 15.27 281
8 759.00 608.43 17.64 282
9 ENDTBL 283

3 STRUCT 01 290
8 798.50 0.00 0.00 291
8 799.00 0.10 0.70 292
8 799.50 0.68 1.54 293
8 800.00 16.87 2.38 294
8 800.50 46.18 3.39 295
8 801.00 84.03 4.39 296
8 801.50 128.80 5.53 297
8 802.00 179.55 6.67 298
8 802.50 235.63 8.01 299

8 803.00 402.66 9.34 300
8 803.50 662.04 10.93 301
8 804.00 982.86 12.51 302
9 ENDTBL 303
6 RUNOFF 1 001 1 0.24 90.00 0.251 1 1 1 360
6 RESVOR 2 16 1 2 795.5 1 1 1 1 1 370
6 REACH 3 003 2 3 1350.00 1.6 1.451 1 1 1 380
6 RUNOFF 1 004 4 0.025 90.00 0.231 1 1 1 390
6 RESVOR 2 17 4 5 814.00 1 1 1 1 1 391
6 REACH 3 006 5 6 800.00 1.6 1.441 1 1 1 392
6 RUNOFF 1 007 7 0.03 85.0 0.171 1 1 1 393
6 ADDHYD 4 008 7 6 5 1 1 1 1 1 394
6 RESVOR 2 01 5 4 798.50 1 1 1 1 1 395
6 REACH 3 010 4 6 800.0 1.6 1.441 1 1 1 396
6 ADDHYD 4 011 6 3 1 1 1 1 1 1 397
6 RUNOFF 1 012 2 0.10 82.0 0.251 1 1 1 398
6 ADDHYD 4 013 1 2 3 1 1 1 1 1 399
RESVOR 2 15 3 4 770.86 1 1 1 1 1 400
REACH 3 015 4 5 1200.00 0.85 1.381 1 1 ' 1 401
6 RUNOFF 1 016 6 0.14 83.00 0.171 1 1 1 402
ADDHYD 4 017 5 6 7 1 1 1 1 1 403
RESVOR 2 18 7 1 753.50 1 1 1 1 1 404
ENDATA 450
7 INCREM 6 0.08 460
COMPUT 7 001 18 0.0 5.2 1.02 2 01 01 470
ENDCMP 1 480
ENDJOB 2 490
***
*
*
***** ****** *********** **END OF 80-80 LIST**************** ********** ******
r

TR20 XEQ 6/22/99
REV 09/01/83
FILE NO. 1
GRANDOVER (WEST) COMMERCIAL- POST-DEV. W/PONDS 10 YR, 06/22/99
20 JOB 1 PASS 1
30 PAGE 1
COMPUTER PROGRAM FOR PROJECT FORMULATION - HYDROLOGY USER NOTES
THE USERS MANUAL FOR THIS PROGRAM IS THE MAY 1982 DRAFT OF TR-20. CHANGES FROM THE 2/14/74 VERSION INCLUDE:
REACH ROUTING - THE MODIFIED ATT-KIN ROUTING PROCEDURE REPLACES THE CONVEX METHOD. INPUT DATA PREPARED FOR
PREVIOUS PROGRAM VERSIONS USING CONVEX ROUTING COEFFICIENTS WILL NOT RUN ON THIS VERSION.
THE PREFERRED TYPE OF DATA ENTRY IS CROSS SECTION DATA REPRESENTATIVE OF A REACH. IT IS RECOMMENDED THAT
THE OPTIONAL CROSS SECTION DISCHARGE-AREA PLOTS BE OBTAINED WHENEVER NEW CROSS SECTION DATA IS ENTERED.
THE PLOTS SHOULD BE CHECKED FOR REASONABLENESS AND ADEQUACY OF INPUT DATA FOR THE COMPUTATION OF "M"
VALUES USED IN THE ROUTING PROCEDURE.
GUIDELINES FOR DETERMINING OR ANALYZING REACH LENGTHS AND COEFFICIENTS (X,M) ARE AVAILABLE IN THE USERS
MANUAL. SUMMARY TABLE 2 DISPLAYS REACH ROUTING RESULTS AND ROUTING PARAMETERS FOR COMPARISON AND CHECKING.
HYDROGRAPH GENERATION - THE PROCEDURE TO CALCULATE THE INTERNAL TIME INCREMENT AND PEAK TIME OF THE UNIT
HYDROGRAPH HAVE BEEN IMPROVED. PEAK DISCHARGES AND TIMES MAY DIFFER FROM THE PREVIOUS VERSION. OUTPUT
HYDROGRAPHS ARE STILL INTERPOLATED, PRINTED, AND ROUTED AT THE USER SELECTED MAIN TIME INCREMENT.
INTERMEDIATE PEAKS - METHOD ADDED TO PROVIDE DISCHARGES AT INTERMEDIATE POINTS WITHIN REACHES WITHOUT ROUTING.
OTHER - THIS VERSION CONTAINS SOME ADDITIONS TO THE INPUT AND NUMEROUS MODIFICATIONS TO THE OUTPUT. USER
OPTIONS HAVE BEEN MODIFIED AND AUGMENTED ON THE JOB RECORD, RAINTABLES ADDED, ERROR AND WARNING MESSAGES
EXPANDED, AND THE SUMMARY TABLES COMPLETELY REVISED. THE HOLDOUT OPTION IS NOT OPERATIONAL AT THIS TIME.
PROGRAM QUESTIONS OR PROBLEMS SHOULD BE DIRECTED TO HYDRAULIC ENGINEERS AT THE SCS NATIONAL TECHNICAL CENTERS:
CHESTER, PA (NORTHEAST) -- 215-499-3933, FORT WORTH, TX (SOUTH) -- 334-5242 (FTS)
LINCOLN, NB (MIDWEST) -- 541-5318 (FTS), PORTLAND, OR (WEST) -- 423-4099 (FTS)
OR HYDROLOGY UNIT, ENGINEERING DIVISION, LANHAM, MD -- 436-7383 (FTS).
PROGRAM CHANGES SINCE MAY 1982:
12/17/82 - CORRECT PEAK RATE FACTOR FOR USER ENTERED DIMHYD
CORRECT REACH ROUTING PEAK TRAVEL TIME PRINTED WITH FULLPRINT OPTION
5/02/83 - CORRECT COMPUTATIONS FOR ---
1. DIVISION OF BASEFLOW IN DIVERT OPERATION
2. HYDROGRAPH VOLUME SPLIT BETWEEN BASEFLOW AND ABOVE BASEFLOW
3. CROSS SECTION DATA PLOTTING POSITION
4. INTERMEDIATE PEAK WHEN "FROM" AREA IS LARGER THAN "THRU" AREA
5. STORAGE ROUTED REACH TRAVEL TIME FOR MULTIPEAK HYDROGRAPH
6. ORDERING "FLOW-FREQ" FILE FROM SUMMARY TABLE #3 DATA
7. BASEFLOW ENTERED WITH READHYD
8. LOW FLOW SPLIT DURING DIVERT PROCEDURE #2 WHEN SECTION RATINGS START AT DIFFERENT ELEVATIONS
ENHANCEMENTS ---
1. REPLACE USER MANUAL ERROR CODES (PAGE 4-9 TO 4-11) WITH MESSAGES
2. LABEL OUTPUT HYDROGRAPH FILES WITH CROSS SECTION/STRUCTURE, ALTERNATE AND STORM NO'S
09/01/83 - CORRECT INPUT AND OUTPUT ERRORS FOR INTERMEDIATE PEAKS
CORRECT COMBINATION OF RATING TABLES FOR DIVERT
CHECK REACH ROUTING PARAMETERS FOR ACCEPTABLE LIMITS
ELIMINATE MINIMUM REACH TRAVEL TIME WHEN ATT-KIN COEFFICIENT EQUALS ONE
L-
lu

7
I
TR20 XEQ 6/22/99 GRANDOVER (WEST) COMMERCIAL- POST-DEV. W/PONDS 10 YR, 06/22/99
REV 09/01/83
EXECUTIVE CONTROL OPERATION INCREM MAIN TIME INCREMENT = .08 HOURS
20 JOB 1 PASS 1
30 PAGE 2
RECORD ID 460
IXECUTIVE CONTROL OPERATION COMPUT FROM XSECTION 1 TO STRUCTURE 18 RECORD ID 470
STARTING TIME _ .00 RAIN DEPTH = 5.20 RAIN DURATION= 1.00 RAIN TABLE NO.= 2 ANT. MOIST. COND= 2
ALTERNATE NO.= 1 STORM NO.= 1 MAIN TIME INCREMENT = .08 HOURS
'PERATION RUNOFF CROSS SECTION 1
OUTPUT HYDROGRAPH= 1
AREA= .24 SQ MI INPUT RUNOFF CURVE= 90. TIME OF CONCENTRATION= .25 HOURS
INTERNAL HYDROGRAPH TIME INCREMENT= 0333 HOURS
PEAK TIME(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET)
12.05 693.30 (RUNOFF)
16.44 18.55 (RUNOFF)
17.65 15.47 (RUNOFF)
19.64 12.41 (RUNOFF)
23.64 9.33 (RUNOFF)
IIME(HRS) FIRST HYDROGRAPH POINT = .00 HOURS TIME INCREMENT = .08 HOURS DRAINAGE AREA = .24 SQ.MI.
3.20 DISCHG .00 .00 .00 .00 .00 .00 .00 .01 .05 .14
4.00 DISCHG .27 .40 .54 .68 .82 .96 1.10 1.23 1.36 1.49
4.80 DISCHG 1.62 1.75 1.87 1.99 2.11 2.23 2.34 2.45 2.57 2.68
5.60 DISCHG 2.78 2.89 2.99 3.10 3.20 3.30 3.49 3.88 4.27 4.54
6.40 DISCHG 4.74 4.91 5.06 5.20 5.33 5.47 5.59 5.72 5.84 5.97
7.20 DISCHG 6.08 6.20 6.32 6.43 6.54 6.65 6.76 6.86 6.97 7.07
8.00 DISCHG 7.17 7.42 8.00 8.57 9.05 9.74 10.43 10.88 11.17 11.39
8.80 DISCHG 11.58 11.75 11.91 12.11 12.65 13.42 13.99 14.34 14.60 14.82
1 9.60 DISCHG 15.30 16.14 16.84 17.27 17.56 17.80 18.21 19.06 19.89 20.73
10.40 DISCHG 22.32 23.94 25.29 27.72 30.34 32.26 34.89 37.83 39.98 42.67
11.20 DISCHG 45.92 48.42 52.02 57.10 62.71 95.13 166.87 228.29 321.61 501.30
12.00 DISCHG 661.20 676.14 498.70 308.83 209.47 151.19 116.61 98.35 86.05 77.34
12.80 DISCHG 72.30 66.96 61.17 57.50 53.98 50.14 47.67 45.48 42.94 41.18
13.60 DISCHG 39.47 37.02 35.20 33.99 32.63 31.58 30.79 29.59 28.56 27.81
14.40 DISCHG 26.69 25.63 24.90 23.79 22.67 22.04 21.77 21.64 21.59 21.57
15.20 DISCHG 21.56 21.50 20.93 19.89 19.13 18.78 18.63 18.56 18.53 18.52
16.00 DISCHG 18.51 18.51 18.52 18.52 18.52 18.52 18.53 18.37 17.51 16.50
16.80 DISCHG 15.92 15.66 15.55 15.50 15.47 15.46 15.46 15.46 15.46 15.46
17.60 DISCHG 15.47 15.47 15.45 15.05 14.05 13.16 12.74 12.54 12.46 12.42
18.40 DISCHG 12.40 12.39 12.39 12.39 12.39 12.39 12.39 12.39 12.40 12.40
19.20 DISCHG 12.40 12.40 12.40 12.40 12.40 12.40 12.40 12.39 11.99 10.98
20.00 DISCHG 10.09 9.67 9.47 9.38 9.34 9.32 9.31 9.31 9.31 9.31
20.80 DISCHG 9.31 9.31 9.31 9.31 9.31 9.31 9.32 9.32 9.32 9.32
21.60 DISCHG 9.32 9.32 9.32 9.32 9.32 9.32 9.32 9.32 9.32 9.32
22.40 DISCHG 9.32 9.32 9.32 9.33 9.33 9.33 9.33 9.33 9.33 9.33
23.20 DISCHG 9.33 9.33 9.33 9.33 9.33 9.33 9.33 9.31 8.91 7.90

TR20 XEQ 6/22/99 GRANDOVER (WEST) COMMERCIAL- POST-DEV. W/PONDS 10 YR, 06/22 /99 20 JOB 1 PASS 1
REV 09/01/83 30 PAGE 3
RUNOFF VOLUME ABOVE BASEFLOW = 4.05 WA TERSHED INCHES, 627.95 CFS-HRS, 51 .89 ACRE- FEET; BASEFLOW = .00 CFS
PERATION RESVOR STRUCTURE 16
INPUT HY DROGRAPH= 1 OUTPUT HYDROGRAPH= 2
SURFACE ELEVATION= 795.50

PEAK TIM E(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET)
12.15 545.92 799.83
IME(HRS) F IRST HYDROGRAPH POINT = .00 HOURS TIME INCRE MENT = .08 HOURS DRAINAGE AREA = .24 SQ.MI.
4.00 DISCHG .00 .00 .00 .00 .00 .00 .01 .01 .01 .01
4.00 ELEV 795.50 795.50 795.50 795.50 795.50 795.50 795.51 795.51 795.52 795.52
4.80 DISCHG .01 .02 .02 .02 .02 .03 .03 .03 .04 .04
4.80 ELEV 795.52 795.53 795.53 795.53 795.54 795.54 795.55 795.56 795.56 795.57
5.60 DISCHG .04 .05 .05 .06 .06 .06 .07 .07 .08 .09
5.60 ELEV 795.57 795.58 795.59 795.59 795.60 795.61 795.61 795.62 795.63 795.64
6.40 DISCHG .09 .10 .10 .11 .12 .13 .13 .14 .15 .16
6.40 ELEV 795.65 795.66 795.67 795.69 795.70 795.71 795.72 795.74 795.75 795.76
7.20
7.20 DISCHG
ELEV .16
795.77 .17
795.79 .18
795.80 .19
795.82 .20
795.83 .21
795.85 .22
795.86 .23
795.88 .23
795.89 .24
795.91
8.00 DISCHG .25 .26 .27 .28 .30 .30 .31 .31 .32 .32
8.00 ELEV 795.92 795.94 795.96 795.97 795.99 796.01 796.04 796.06 796.08 796.11
8.80 DISCHG .33 .33 .34 .34 .35 .36 .36 .37 .37 .38
8.80 ELEV 796.13 796.16 796.18 796.21 796.24 796.26 796.29 796.33 796.36 796.39
9.60 DISCHG .39 .40 .40 .41 .42 .43 .43 .44 .45 .46
9.60 ELEV 796.42 796.46 796.49 796.53 796.57 796.60 796.64 796.68 796.73 796.77
10.40 DISCHG .47 .48 .49 .51 .52 1.44 6.35 10.92 15.19 19.18
10.40 ELEV 796.82 796.87 796.92 796.98 797.04 797.11 797.18 797.24 797.29 797.35
11.20 DISCHG 23.01 26.70 30.28 36.28 42.60 52.32 73.37 107.50 163
91 254
20
11.20 ELEV 797.40 797.44 797.49 797.54 797.58 797.65 797.79 798.02 .
798.32 .
798.74
12.00 DISCHG 389.18 511.64 544.85 483.03 384.93 297.66 234.53 187.31 155.27 130.48
12.00 ELEV 799.27 799.71 799.83 799.60 799.25 798.92 798.65 798.44 798.27 798.14
12.80 DISCHG 111.73 98.69 89.43 81.38 74.52 68.51 63.27 58.80 54.90 51.46
12.80 ELEV 798.04 797.97 797.91 797.85 797.80 797.76 797.72 797.69 797.67 797.64
13.60 DISCHG 48.48 45.74 43.17 40.87 38.85 37.05 35.48 34.06 32.73 31.51
13.60 ELEV 797.62 797.60 797.58 797.57 797.55 797.54 797.53 797.52 797.51 797.50
14.40 DISCHG 30.62 29.94 29.23 28.48 27.68 26.87 26.11 25.44 24.86 24.36
14.40 ELEV 797.50 797.49 797.48 797.47 797.46 797.45 797.44 797.43 797.42 797.41
15.20 DISCHG 23.93 23.57 23.21 22.78 22.28 21.77 21.31 20.89 20.53 20.23
15.20 ELEV 797.41 797.40 797.40 797.39 797.39 797.38 797.37 797.37 797.36 797.36
16.00 DISCHG 19.97 19.74 19.56 19.40 19.26 19.15 19.06 18.96 18.81 18.53
16.00 ELEV 797.36 797.35 797.35 797.35 797.35 797.34 797.34 797.34 797.34 797.34
16.80 DISCHG 18.18 17.81 17.48 17.18 16.92 16.70 16.51 16.35 16.21 16.10
_ 16.80 ELEV 797.33 797.33 797.32 797.32 797.32 797.31 797.31 797.31 797.31 797.30
17.60 DISCHG 16.00 15.92 15.85 15.76 15.58 15.27 14.92 14.57 14.26 • 13.98
17.60 ELEV 797.30 797.30 797.30 797.30 797.30 797.29 797.29 797.28 797.28 797.28
18.40 DISCHG 13.74 13.53 13.36 13.21 13.09 12.98 12.89 12.81 12.75 12.70
18.40 ELEV 797.27 797.27 797.27 797.27 797.27 797.26 797.26 797.26 797.26 797.26

J

T R20 XEO 6/22/99 GRANDOVER (WEST) COMMERCIAL- POST-DEV. W/PONDS 10 YR, 06/22/99 20 JOB 1 PASS 1
REV 09/01/83 30 PAGE 4
19.20 DISCHG 12.65 12.61 12.58 12.55 12.53 12.51 12.49 12.48 12.43 12.29
19.20 ELEV 797.26 797.26 797.26 797.26 797.26 797.26 797.26 797.26 797.26 797.25
20.00 DISCHG 12.02 11.69 11.37 11.07 10.81 10.59 10.39 10.23 10.09 9.97
20.00 ELEV 797.25 797.25 797.24 797.24 797.24 797.23 797.23 797.23 797.23 797
22
20.80 DISCHG 9.87 9.78 9.71 9.65 9.60 9.56 9.52 9.49 9.46 .
9.44
20.80 ELEV 797.22 797.22 797.22 797.22 797.22 797.22 797.22 797.22 797.22 797.22
21.60 DISCHG 9.42 9.41 9.39 9.38 9.37 9.36 9.36 9.35 9.35 9.34
21.60 ELEV 797.22 797.22 797.22 797.22 797.22 797.22 797.22 797.22 797.22 797.22
22.40 DISCHG 9.34 9.34 9.34 9.33 9.33 9.33 9.33 9.33 9.33 9.33
22.40 ELEV 797.22 797.22 797.22 797.22 797.22 797.22 797.22 797.22 797.22 797.22
23.20 DISCHG 9.33 9.33 9.33 9.33 9.33 9.33 9.33 9.33 9.30 9.16
23.20 ELEV 797.22 797.22 797.22 797.22 797.22 797.22 797.22 797.22 797.22 797.21
RUNOFF VOLUME ABOVE BASEFLOW = 3.66 WATERSHED INCH ES, 566.61 CFS-HRS, 46 .82 ACRE-FEET; BASEFLOW = .00 CFS

OPERATION REACH CROSS SECTION 3
INPUT HYDROGRAPH= 2 OUTPUT HYDROGRAPH= 3
LENGTH = 1350.00 FEET INPUT = COEFF ICIENTS RELATED TO CROSS SEC TIONAL AREA, X= 1.60, M= 1.45

MODIFIED ATT-KIN ROUTING COEFFICIENT = 1.00 PEAK TRAVEL TIME = .00 HOURS
*** WARNING REACH 3 ATT-KIN COEFF.(C) GREATER THAN 0.667, CONSIDER REDUCING MAIN TIME INCREMENT ***
PEAK TIME(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET)
12.15 545.92 (NULL)
IME(HRS) FIR ST HYDROGRAPH POINT = .00 HOU RS TIME INCR EMENT = .08 HOURS DRAINAGE AREA = .24 SO.MI.
? 4.00 DISCHG .00 .00 .00 .00 .00 .00 .01 .01 .01 .01
4.80 DISCHG .01 .02 .02 .02 .02 .03 .03 .03 .04 .04
5.60 DISCHG 04 .05 .05 Ob .06 .06 .07 .07 .08 09
6.40 DISCHG .09 .10 .10 .11 .12 .13 .13 .14 .15 .
.16
7.20 DISCHG .16 .17 .18 .19 .20 .21 .22 .23 .23 .24
8.00 DISCHG .25 .26 .27 .28 .30 .30 .31 .31 .32 .32
8.80 DISCHG .33 .33 .34 .34 .35 .36 .36 .37 .37 .38
9.60 DISCHG .39 .40 .40 .41 .42 .43 .43 .44 .45 .46
10.40 DISCHG .47 .48 .49 .51 .52 1.44 6.35 10.92 15.19 19.18
11.20 DISCHG 23.01 26.70 30.28 36.28 42.60 52.32 73.37 107.50 163.91 254.20
12.00 DISCHG 389.18 511.64 544.85 483.03 384.93 297.66 234.53 187.31 155.27 130.48
12.80 DISCHG 111.73 98.69 89.43 81.38 74.52 68.51 63.27 58.80 54.90 51.46
13.60 DISCHG 48.48 45.74 43.17 40.87 38.85 37.05 35.48 34.06 32.73 31.51
14.40 DISCHG 30.62 29.94 29.23 28.48 27.68 26.87 26.11 25.44 24.86 24.36
15.20 DISCHG 23.93 23.57 23.21 22.78 22.28 21.77 21.31 20.89 20.53 20.23
16.00 DISCHG 19.97 19.74 19.56 19.40 19.26 19.15 19.06 18.96 18.81 18.53
16.80 DISCHG 18.18 17.81 17.48 17.18 16.92 16.70 16.51 16.35 16.21 16.10
17.60 DISCHG 16.00 15.92 15.85 15.76 15.58 15.27 14.92 14.57 14.26 13.98
18.40 DISCHG 13.74 13.53 13.36 13.21 13.09 12.98 12.89 12.81 12.75 12.70
19.20 DISCHG 12.65 12.61 12.58 12.55 12.53 12.51 12.49 12.48 12.43 12.29
20.00 DISCHG 12.02 11.69 11.37 11.07 10.81 10.59 10.39 10.23 10.09 9.97
20.80 DISCHG 9.87 9.78 9.71 9.65 9.60 9.56 9.52 9.49 9.46 9.44
21.60 DISCHG 9.42 9.41 9.39 9.38 9.37 9.36 9.36 9.35 35
9 9.34
.

T R20 XEQ 6/22/99 GRANDOVER (WEST) COMMERCIAL- POST-DEV. W/PONDS 10 YR, 06/22/99 20 JOB 1 PASS 1
REV 09/01/83 30 PAGE 5
22.40
23.20 DISCHG
DISCHG 9.34
9.33 9.34
9.33 9.34
9.33 9.33
9
33 9.33
9
33 9.33
9
33 9.33
9
33 9.33
9
33 9.33
9
30 9.33
9
16
. . . . . . .
RUNOFF VOLUME ABOVE BASEFLOW = 3.66 WATERSHED INCHES, 566.61 CFS-HRS, 46 .82 ACRE-FEET; BASEFLOW = .00 CFS

OPERATION RUNOFF CROSS SECTION 4
OUTPUT HYDROGRAPH= 4
AREA= .03 SQ MI INPUT RUNOFF CURVE= 90. TIME OF CON CENTRATION= .23 HOURS
INTERNA L HYDROGRAPH TIME INCREMENT= .030 7 HOURS
PEAK TI ME(HRS) PEAK DISCHARG E(CFS) P EAK ELEVATION(FEET)
12.0 4 73.24 (RUNOFF )
IME(HRS) FIRST HYDROGR APH POINT = .00 HOU RS TIME INCRE MENT = .08 HOURS DRAINAGE AREA = .03 SQ.MI.
3.20 DISCHG .00 .00 .00 .00 .00 .00 .00 .00 .01 .02
4.00 DISCHG .03 .04 .06 .07 .09 .10 .12 .13 .14 .16
4.80 DISCHG .17 .18 .20 .21 .22 .23 .25 .26 .27 .28
5.60 DISCHG .29 .30 .31 .32 .34 .35 .37 .41 .45 .48
6.40 DISCHG .50 .51 .53 .54 .56 .57 .59 .60 .61 .62
7.20
8.00 DISCHG
DISCHG .64
.75 .65
.78 .66
.84 .67
.90 .68
.95 .70
1.03 .71
1.10 .72
1.14 .73
1.17 .74
1.19
_ 8.80 DISCHG 1.21 1.23 1.24 1.27 1.33 1.41 1.47 1.50 1.53 1.55
9.60 DISCHG 1.60 1.70 1.77 1.81 1.84 1.86 1.91 2.00 2.09 2.18
10.40 DISCHG 2.36 2.53 2.67 2.94 3.21 3.40 3.69 4.00 4.21 4.51
11.20 ' DISCHG 4.85 5.09 5.49 6.06 6.62 10.71 18.81 24.83 35.30 55.92
12.00 DISCHG 71.56 70.79 48.77 29.11 19.92 14.48 11.28 9.74 8.62 7.84
12.80 DISCHG 7.44 6.86 6.25 5.92 5.54 5.15 4.92 4.69 4.42 4.25
13.60 DISCHG 4.07 3.80 3.63 3.51 3.37 3.27 3.19 3.06 2.96 2.88
14.40 DISCHG 2.76 2.65 2.58 2.45 2.34 2.28 2.26 2.25 2.25 2.25
15.20 DISCHG 2.25 2.24 2.17 2.05 1.98 1.95 1.94 1.93 1.93 1.93
Q 16.00 DISCHG 1.93 1.93 1.93 1.93 1.93 1.93 1.93 1.91 1.81 1.70
16.80 DISCHG 1.65 1.63 1.62 1.61 1.61 1.61 1.61 1.61 1.61 1.61
17.60 DISCHG 1.61 1.61 1.61 1.56 1.44 1.35 1.32 1.30 1.29 1.29
18.40 DISCHG 1.29 1.29 1.29 1.29 1.29 1.29 1.29 1.29 1.29 1.29
19.20 DISCHG 1.29 1.29 1.29 1.29 1.29 1.29 1.29 1.29 1.24 1.12
20.00 DISCHG 1.03 1.00 .98 .97 .97 .97 .97 .97 .97 .97
20.80
21.60 DISCHG
DISCHG .97
.97 .97
.97 .97
.97 .97
.97 .97
.97 .97
.97 .97
.97 .97
.97 .97
.97 .97
.97
22.40 DISCHG .97 .97 .97 .97 .97 .97 .97 .97 .97 .97
23.20 DISCHG .97 .97 .97 .97 .97 .97 .97 .97 .92 .80

RUNOFF VOLUME ABOVE BASEFLOW = 4.06 WATERSHED INCH ES, 65.47 CFS- HRS, 5.41 ACRE-FEET; BASEFLOW = .00 CFS
R ERATION RESVOR STRUCTURE 17
INPUT HY DROGRAPH= 4 OUTPUT HYDROGRAPH= 5
SURFACE ELEVATION= 814.00
PEAK TIM E(HRS) PEAK DISCHARGE (CFS) PE AK ELEVATION(FEET)
12.14 56.73 817.20

TR20 XEO 6/22/99 GRANDOVER (WEST) COMMERCIAL- POST-DEV. W/PONDS 10 YR, 06/22/99 20 JOB 1 PASS 1
REV 09/01/83 30 PAGE 6
T IME(HRS) FIRST HYDROG RAPH POINT = .00 HOURS TIME INCRE14ENT = .08 HOURS DRAINAGE AREA = .03 SQ.MI.
4.80 DISCHG .00 .00 .00 .01 .01 .01 .01 .01 .01 .01
4.80 ELEV 814.00 814.00 814.00 814.02 814.02 814.03 814.03 814.03 814.04 814.04
5.60 DISCHG .01 .01 .01 .01 .01 .02 .02 .02 .02 .02
5.60 ELEV 814.04 814.05 814.05 814.06 814.06 814.06 814.07 814.07 814.08 814.08
6.40 DISCHG .02 .02 .02 .03 .03 .03 .03 .03 .03 .04
6.40 ELEV 814.09 814.10 814.10 814.11 814.12 814.12 814.13 814.14 814.15 814.15
7.20 DISCHG .04 .04 .04 .04 .05 .05 .05 .05 .05 .06
7.20 ELEV 814.16 814.17 814.18 814.19 814.19 814.20 814.21 814.22 814.23 814.24
8.00 DISCHG .06 .06 .06 .07 .07 .07 .07 .08 .08 .08
8.00 ELEV 814.25 814.25 814.26 814.28 814.29 814.30 814.31 814.33 814.34 814.35
8.80 DISCHG .09 .09 .10 .10 .10 .11 .11 .12 .12 .12
8.80 ELEV 814.37 814.38 814.40 814.41 814.43 814.45 814.46 814.48 814.50 814.52
9.60 DISCHG .13 .13 .14 .14 .15 .15 .16 .17 .17 .18
9.60 ELEV 814.54 814.56 814.58 814.60 814.62 814.64 814.67 814.69 814.71 814.74
10.40 DISCHG .18 .19 .20 .21 .22 .23 .24 .24 .25 .25
10.40 ELEV 814.77 814.80 814.83 814.86 814.90 814.94 814.98 815.03 815.08 815.13
11.20 DISCHG .26 .26 .27 .28 .28 .29 .57 4.32 11.76 22.70
11.20 ELEV 815.18 815.24 815.30 815.37 815.44 815.54 815.72 815.94 816.20 816.52
12.00 DISCHG 39.23 53.39 56.43 48.12 38.12 29.69 22.92 18.75 15.71 13.33
12.00 ELEV 816.88 817.14 817.19 817.05 816.85 816.67 816.52 816.41 816.32 816.24
12.80 DISCHG 11.52 10.13 8.99 8.07 7.33 6.70 6.17 5.73 5.36 5.13
12.80 ELEV 816.19 816.15 816.11 816.08 816.06 816.04 816.03 816.01 816.00 815.99
13.60 DISCHG 4.96 4.78 4.59 4.41 4.24 4.08 3.93 3.79 3.65 3.52
13.60 ELEV 815.98 815.97 815.96 815.95 815.94 815.93 815.92 815.91 815.90 815.89
14.40 DISCHG 3.40 3.27 3.16 3.04 2.93 2.82 2.72 2.64 2.57 2.51
14.40 ELEV 815.89 815.88 815.87 815.87 815.86 815.85 815.85 815.84 815.84 815.83
15.20 DISCHG 2.47 2.43 2.39 2.34 2.28 2.23 2.18 2.13 2.10 2.07
15.20 ELEV 815.83 815.83 815.83 815.82 815.82 815.82 815.81 815.81 815.81 815.81
16.00 DISCHG 2.04 2.02 2.01 1.99 1.98 1.97 1.96 1.96 1.94 1.91
16.00 ELEV 815.80 815.80 815.80 815.80 815.80 815.80 815.80 815.80 815.80 815.80
16.80 DISCHG 1.87 1.82 1.79 1.76 1.73 1.71 1.69 1.68 1.67 1.66
16.80 ELEV 815.79 815.79 815.79 815.79 815.79 815.78 815.78 815.78 815.78 815.78
17.60 DISCHG 1.65 1.64 1.64 1.63 1.61 1.57 1.53 1.49 1.46 1.43
17.60 ELEV 815.78 815.78 815.78 815.78 815.78 815.78 815.77 815.77 815.77 815.77
18.40 DISCHG 1.40 1.38 1.37 1.35 1.34 1.33 1.33 1.32 1.31 1.31
18.40 ELEV 815.77 815.77 815.76 815.76 815.76 815.76 815.76 815.76 815.76 815.76
19.20 DISCHG 1.31 1.30 1.30 1.30 1.30 1.30 1.30 1.30 1.29 1.27
19.20 ELEV 815.76 815.76 815.76 815.76 815.76 815.76 815.76 815.76 815.76 815.76
20.00 DISCHG 1.24 1.20 1.16 1.13 1.10 1.08 1.06 1.04 1.03 1.02
20.00 ELEV 815.76 815.75 815.75 815.75 815.75 815.75 815.75 815.74 815.74 815.74
20.80 DISCHG 1.01 1.00 1.00 .99 .99 .99 .98 .98 .98 .98
20.80 ELEV 815.74 815.74 815.74 815.74 815.74 815.74 815.74 815.74 815.74 815.74
21.60 DISCHG .98 .98 .97 .97 .97 .97 .97 .97 .97 .97
21.60 ELEV 815.74 815.74 815.74 815.74 815.74 815.74 815.74 815.74 815.74 815.74
22.40 DISCHG .97 .97 .97 .97 .97 .97 .97 .97 ..97 .97
22.40 ELEV 815.74 815.74 815.74 815.74 815.74 815.74 815.74 815.74 815.74 815.74
23.20 DISCHG .97 .97 .97 .97 .97 .97 .97 .97 .97 .95

TR20 XEQ 6/22/99 GRANDOVER (WEST) COMMERCIAL- POST-DEV. W/PONDS 10 YR, 06/22/99 20 JOB 1 PASS 1
REV 09/01/83 30 PAGE 7
23.20 ELEV 815.74 815.74 815.74 815.74 815.74 815.74 815.74 815.74 815.74 815.74
RUNOFF VOLUME ABOVE BASEFLOW = 3.37 WA TERSHED INCHES, 54.45 CFS-HRS, 4 .50 ACRE-FEET ; BASEFLOW = .00 CFS
t
PERATION REACH CROSS SECTI ON 6
INPUT HY DROGRAPH= 5 OUTPUT HYDROGRAPH= 6
LENGTH = 800.00 FEET INPUT = COEFFICIENTS RELATED TO CROSS SECTIONAL AREA, X= 1.60, M= 1.44
MODIFIED ATT-KIN ROUTING COEFFICIENT = 1.00 PEAK TRAVEL TIME _ .00 HOURS
*** WARNING REACH 6 A TT-KIN COEFF.(C) GREATER THAN 0.667, CONSI DER REDUCING MAIN TIME INCREMENT ***
PEAK TIM E(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET)
12.14 56.73 (NULL)
T IME(HRS) F IRST HYDROG RAPH POINT = .00 HOURS TIME INCREME NT = .08 HOURS DRAINAGE AREA = .03 SQ.MI.
4.80 DISCHG .00 .00 .00 .01 .01 .01 .01 .01 .01 .01
5.60 DISCHG .01 .01 .01 .01 .01 .02 .02 .02 .02 .02
6.40 DISCHG .02 .02 .02 .03 .03 .03 .03 .03 .03 .04
7.20
8.00 DISCHG
DISCHG .04
.06 .04
.06 .04 .04
.06 .07 .OS
.07 05
.07 .05
.07 .05
.08 .05
.08 .06
.08
8.80 DISCHG .09 .09 .10 .10 .10 .11 .11 .12 .12 .12
9.60 DISCHG .13 .13 .14 .14 .15 .15 .16 .17 .17 .18
10.40 DISCHG .18 .19 .20 .21 .22 .23 .24 .24 .25 .25
11.20 DISCHG .26 .26 .27 .28 .28 .29 .57 4.32 11.76 22.70
12.00 DISCHG 39.23 53.39 56.43 48.12 38.12 29.69 22.92 1 8.75 15.71 13.33
12.80 DISCHG 11.52 10.13 8.99 8.07 7.33 6.70 6.17 5.73 5.36 5.13
13.60 DISCHG 4.96 4.78 4.59 4.41 4.24 4.08 3.93 3.79 3.65 3.52
14.40 DISCHG 3.40 3.27 3.16 3.04 2.93 2.82 2.72 2.64 2.57 2.51
15.20 DISCHG 2.47 2.43 2.39 2.34 2.28 2.23 2.18 2.13 2.10 2.07
16.00 DISCHG 2.04 2.02 2.01 1.99 1.98 1.97 1.96 1.96 1.94 1.91
16.80 DISCHG 1.87 1.82 1.79 1.76 1.73 1.71 1.69 1.68 1.67 1.66
17.60 DISCHG 1.65 1.64 1.64 1.63 1.61 1.57 1.53 1.49 1.46 1.43
18.40 DISCHG 1.40 1.38 1.37 1.35 1.34 1.33 1.33 1.32 1.31 1.31
19.20 DISCHG 1.31 1.30 1.30 1.30 1.30 1.30 1.30 1.30 1.29 1.27
20.00 DISCHG 1.24 1.20 1.16 1.13 1.10 1.08 1.06 1.04 1.03 1.02
20.80
21.60 DISCHG
DISCHG 1.01
.98 1.00
.98 1.00 .99
.97 .97 .99
.97 .99
.97 .98
.97 .98
.97 .98
.97 .98
.97
22.40 DISCHG .97 .97 .97 .97 .97 .97 .97 .97 .97 .97
23.20 DISCHG .97 .97 .97 .97 .97 .97 .97 .97 .97 .95
RUNOFF V O
UM
B
L
E A
OV E BASEFLOW = 3.37 WATERSHED INCHES, 54.45 CFS-HRS, 4. 50 ACRE-FEET; BASEFLOW = .00 CFS
'PERATION RUNOFF CROSS SECTION 7
OUTPUT HY DROGRAPH= 7
AREA=
INTERNAL .03 SQ MI
HYDROGRAPH INPUT RUNOFF CURVE= 85. TIME OF CONCENTRATION=
TIME INCREMENT= .0227 HOURS .17 HOURS

PEAK TIME (HRS) PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET)
12.00 85.66 (RUNOFF)
TR20 XEQ 6/22/99 GRANDOVER (WEST) COMMERCIAL- POST-DEV. W/PONDS 10 YR, 06/22/99 20 JOB 1 PASS 1
REV 09/01/83 30 PAGE 8
ITIMEORS) FIRST HYDROGR APH POINT = .00 HOURS TIME INCREMENT = .08 HOURS DRAINAGE AREA = .03 SQ.MI.
4.80 DISCHG .00 .00 .00 .00 .00 .00 .00 .00 .01 .02
5.60 DISCHG .03 .04 .06 .07 .08 .09 .11 .14 .16 .17
6.40 DISCHG .19 .21 .22 .24 .26 .27 .29 .30 .32 .33
7.20 DISCHG .34 .36 .37 .39 .40 .41 .43 .44 .45 .47
8.00 DISCHG .48 .52 .58 .61 .66 .73 .78 .81 .83 .86
8.80 DISCHG .88 .90 .92 .95 1.03 1.10 1.14 1.17 1.20 1.22
9.60 DISCHG 1.30 1.40 1.45 1.48 1.51 1.54 1.61 1.72 1.79 1.89
10.40 DISCHG 2.11 2.24 2.38 2.72 2.94 3.11 3.48 3.75 3.92 4.31
11.20 DISCHG 4.64 4.85 5.44 6.02 6.66 13.83 23.10 27.78 45.42 72.50
12.00 DISCHG 85.66 73.42 38.17 22.52 16.72 12.47 10.68 9.92 8.96 8.45
12.80 DISCHG 8.14 7.28 6.72 6.49 5.97 5.59 5.44 5.13 4.84 4.73
13.60 DISCHG 4.46 4.15 4.04 3.90 3.73 3.66 3.56 3.38 3.31 3.22
14.40 DISCHG 3.04 2.96 2.88 2.70 2.60 2.57 2.56 2.56 2.56 2.56
15.20 DISCHG 2.56 2.55 2.41 2.27 2.22 2.21 2.20 2.20 2.20 2.20
16.00 DISCHG 2.20 2.20 2.21 2.21 2.21 2.21 2.21 2.16 1.98 1.89
16.80 DISCHG 1.86 1.85 1.84 1.84 1.84 1.84 1.84 1.85 1.85 1.85
17.60 DISCHG 1.85 1.85 1.84 1.74 1.57 1.51 1.49 1.48 1.48 1.48
18.40 DISCHG 1.48 1.48 1.48 1.48 1.48 1.48 1.48 1.48 1.48 1.48
19.20
20.00 DISCHG
DISCHG 1.48
1.14 1.48
1.12 1.48
1.12 1.48
1.12 1.48
1.11 1.48
1.11 1.48
1.11 1.48
1.12 1.37
1.12 1.21
1.12
20.80 DISCHG 1.12 1.12 1.12 1.12 1.12 1.12 1.12 1.12 1.12 1.12
21.60 DISCHG 1.12 1.12 1.12 1.12 1.12 1.12 1.12 1.12 1.12 1.12
22.40 DISCHG 1.12 1.12 1.12 1.12 1.12 1.12 1.12 1.12 1.12 1.12
23.20 DISCHG 1.12 1.12 1.12 1.12 1.12 1.12 1.12 1.12 1.01 .84
RUNOFF VOLUME ABOVE BASEFLOW = 3.55 WATERSHED INC HES, 68.70 CFS-HRS, 5. 68 ACRE-FEET; BASEFLOW = .00 CFS
OPERATION ADDHYD CROSS SECTION 8
INPUT HY DROGRAPHS= 7, 6 OUTPUT HYDROGRAPH= 5
..ELEVATI ON OUTPUT OPTION REQUE STED BUT NO ELEVATIONS GIVEN***
PEAK TIM E(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATIO N(FEET)
12.04 130.17 (NULL)
-ITME(HRS) F IRST HYDROGRAPH POINT = .00 HOURS TIME INCREMENT = .08 HOURS DRAINAGE AREA = .05 SQ.MI.
4.80 DISCHG .00 .00 .00 .01 .01 .01 .01 .01 .02 .03
5.60 DISCHG .04 .06 .07 .08 .09 .11 .12 .15 .18 .19
6.40 DISCHG .21 .23 .25 .27 .28 .30 .32 .33 .35 .37
7.20 DISCHG .38 .40 .42 .43 .45 .46 .48 .49 .51 .52
8.00 DISCHG .54 .58 .64 .68 .73 .80 .85 .89 .92 .94
8.80 DISCHG .97 .99 1.02 1.05 1.13 1.21 1.25 1.29 1.32 1.35
9.60 DISCHG 1.43 1.53 1.59 1.63 1.66 1.69 1.77 1.89 1.96 2.07
10.40 DISCHG 2.30 2.43 2.58 2.93 3.16 3.33 3.71 3.99 4.17 4.57
11.20 DISCHG 4.90 5.11 5.71 6.29 6.94 14.13 23.67 32.11 57.17 95.20
12.00 DISCHG 124.89 126.81 94.59 70.64 54.83 42.16 33.59 28.66 24.66 21.78

TR20 XEQ 6/22/99
REV 09/01/83
GRANDOVER (WEST) COMMERCIAL- POST-DEV. W/PONDS 10 YR, 06/22/99
20 JOB 1 PASS 1
30 PAGE 9
12.80 DISCHG 19.66
13.60 DISCHG 9.42
14.40 DISCHG 6.44
15.20 DISCHG 5.03
16.00 DISCHG 4.25
16.80 DISCHG 3.72
17.60 DISCHG 3.50
18.40 DISCHG 2.88
19.20 DISCHG 2.79
20.00 DISCHG 2.38
20.80 DISCHG 2.13
21.60 DISCHG 2.09
22.40 DISCHG 2.09
23.20 DISCHG 2.09

RUNOFF VOLUME ABOVE BASEFLOW =
17.41 15.72 14.56 13.30 12.29 11.61 10.86 10.20 9.87
8.93 8.63 8.31 7.97 7.74 7.49 7.17 6.96 6.74
6.23 6.04 5.75 5.53 5.39 5.29 5.20 5.13 5.08
4.98 4.80 4.61 4.50 4.43 4.38 4.33 4.30 4.27
4.23 4.21 4.20 4.19 4.18 4.17 4.12 3.92 3.79
3.67 3.63 3.60 3.58 3.56 3.54 3.52 3.51 3.50
3.49 3.48 3.37 3.18 3.08 3.02 2.97 2.94 2.91
2.86 2.85 2.83 2.82 2.81 2.81 2.80 2.80 2.79
2.79 2.79 2.78 2.78 2.78 2.78 2.78 2.66 2.48
2.32 2.28 2.24 2.22 2.19 2.17 2.16 2.15 2.14
2.12 2.11 2.11 2.11 2.10 2.10 2.10 2.10 2.09
2.09 2.09 2.09 2.09 2.09 2.09 2.09 2.09 2.09
2.09 2.09 2.09 2.09 2.09 2.09 2.09 2.09 2.09
2.09 2.09 2.09 2.09 2.09 2.09 2.09 1.98 1.79
3.47 WAT ERSHED INC HES, 123.14 CFS-HRS, 10.18 ACRE-FE ET; BASE FLOW = .00 CFS
PERATION RESVOR STRUCTURE 1
INPUT HYDROGRAPH= 5 OUTPUT HYDROGRAPH= 4
SURFACE ELEVATION= 798.50
PEAK TIME(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET)
12.30 59.77 800.68
N
IME(HRS) FIRST HYDROGRAPH POINT = .00 HOURS TIME INCREMENT = .08 HOURS DRAINAGE AREA = .05 SQ.MI.
7.20 DISCHG .00 .00 .00 .01 .01 .01 .01 .01 .01 .01
7.20 ELEV 798.50 798.50 798.50 798.53 798.53 798.53 798.53 798.53 798.54 798.54
8.00 DISCHG .01 .01 .01 .01 .01 .01 .01 .01 .01 .01
8.00 ELEV 798.54 798.54 798.55 798.55 798.55 798.56 798.56 798.56 798.57 798.57
8.80 DISCHG .02 .02 .02 .02 .02 .02 .02 .02 02 03
8.80 ELEV 798.58 798.58 798.59 798.59 798.60 798.60 798.61 798.61 .
798.62 .
798.63
9.60 DISCHG .03 .03 .03 .03 .03 .03 .04 .04 .04 .04
9.60 ELEV 798.63 798.64 798.65 798.65 798.66 798.67 798.68 798.69 798.69 798.70
10.40 DISCHG .04 .05 .05 .05 .05 .06 .06 .06 .07 .07
10.40 ELEV 798.71 798.73 798.74 798.75 798.76 798.78 798.80 798.81 798.83 798.85
11.20 DISCHG .07 .08 .08 .09 .10 .13 .22 .34 .54 6.14
11.20 ELEV 798.87 798.90 798.92 798.95 798.98 799.03 799.10 799.21 799.38 799.67
12.00 DISCHG 19.38 38.02 51.98 58.79 59.67 57.18 52.89 48.05 43.91 40.29
12.00 ELEV 800.04 800.36 800.58 800.67 800.68 800.65 800.59 800.52 800.46 800.40
12.80 DISCHG 36.86 33.65 30.66 27.94 25.49 23.27 21.28 19.53 17.95 16.66
12.80 ELEV 800.34 800.29 800.24 800.19 800.15 800.11 800.08 800.05 800.02 799.99
13.60 DISCHG 15.82 15.02 14.28 13.58 12.93 12.32 11.76 11.23 10.73 10.26
13.60 ELEV 799.97 799.94 799.92 799.90 799.88 799.86 799.84 799.83 799.81 799.80
14.40 DISCHG 9.82 9.41 9.01 8.64 8.28 7.94 7.63 7.34 7.08 6.85
14.40 ELEV 799.78 799.77 799.76 799.75 799.73 799.72 799.71 799.71 799.70 799.69
15.20 DISCHG 6.63 6.44 6.25 6.07 5.88 5.71 5.56 5.41 5.28 • 5.16
15.20 ELEV 799.68 799.68 799.67 799.67 799.66 799.66 799.65 799.65 799.64 799.64
16.00 DISCHG 5.05 4.96 4.87 4.79 4.72 4.65 4.60 4.54 4.48 4.41
16.00 ELEV 799.64 799.63 799.63 799.63 799.62 799.62 799.62 799.62 799.62 799.62

I
TR20 XEQ 6/22/99
9 REV 09/01/83
GRANDOVER (WEST) COMMERCIAL- POST-DEV. W/PONDS 10 YR, 06/22/99
20 JOB 1 PASS 1
30 PAGE 10
16.80 DISCHG 4.33 4.25 4.18 4.11 4.05 3.99 3.94 3.89 3.85 3.80
16.80 ELEV 799.61 799.61 799.61 799.61 799.60 799.60 799.60 799.60 799.60 799.60
17.60 DISCHG 3.77 3.73 3.71 3.67 3.62 3.56 3.50 3.44 3.38 3.33
17.60 ELEV 799.60 799.59 799.59 799.59 799.59 799.59 799.59 799.59 799.58 799.58
18.40 DISCHG 3.28 3.23 3.18 3.14 3.10 3.07 3.04 3.01 2.99 2.96
18.40 ELEV 799.58 799.58 799.58 799.58 799.57 799.57 799.57 799.57 799.57 799.57
19.20 DISCHG 2.94 2.92 2.91 2.89 2.88 2.87 2.86 2.85 2.83 2.80
19.20 ELEV 799.57 799.57 799.57 799.57 799.57 799.57 799.57 799.57 799.57 799.57
20.00 DISCHG 2.76 2.71 2.66 2.61 2.57 2.52 2.48 2.44 2.41 2.38
20.00 ELEV 799.56 799.56 799.56 799.56 799.56 799.56 799.56 799.55 799.55 799.55
20.80 DISCHG 2.35 2.32 2.30 2.27 2.25 2.24 2.22 2.21 2.19 2.18
20.80 ELEV 799.55 799.55 799.55 799.55 799.55 799.55 799.55 799.55 799.55 799.55
21.60 DISCHG 2.17 2.16 2.15 2.15 2.14 2.13 2.13 2.12 2.12 2.12
21.60 ELEV 799.55 799.55 799.55 799.55 799.55 799.54 799.54 799.54 799.54 799.54
22.40 DISCHG 2.11 2.11 2.11 2.11 2.10 2.10 2.10 2.10 2.10 2.10
22.40 ELEV 799.54 799.54 799.54 799.54 799.54 799.54 799.54 799.54 799.54 799.54
23.20 DISCHG 2.10 2.10 2.10 2.10 2.09 2.09 2.09 2.09 2.09 2.06
23.20 ELEV 799.54 799.54 799.54 799.54 799.54 799.54 799.54 799.54 799.54 799.54
RUNOFF VOLUME ABOVE BASEFLOW = 2.92 WATERSHED INCHES, 103.56 CFS-HRS, 8 .56 ACRE-FEET; BAS EFLOW = .00 CFS
L
RATION REACH CROSS SECTION 10
INPUT HY DROGRAPH= 4 OUTPUT HYDROGRAPH= 6
LENGTH = 800.00 FEET INPUT = COEFF ICIENTS RELATED TO CROSS SEC TIONAL AREA, X= 1. 60, M= 1.44
MODIFIED ATT-KIN ROUTING COEFFICIENT = 1.0 0 PEAK TRAVEL TIME _ .00 HOURS
*** WARNING REACH 10 ATT-KIN COEFF.(C) GREATE R THAN 0.667, CONSIDER REDUC ING MAIN TIME INCREMENT ***
PEAK TIM E(HRS) PEAK DISCHARGE (CFS) PEAK ELEVATION(FEET)
12.30 59.77 (NULL)
TIME(HRS) F IRST HYDROGRAP H POINT = .00 HOUR S TIME INCREMENT = .08 HOURS DRAINAGE AREA = .05 SQ.MI.
7.20 DISCHG .00 .00 .00 .01 .01 .01 .01 .01 .01 .01
8.00 DISCHG .01 .01 .01 .01 .01 .01 .01 .01 .01 .01
8.80 DISCHG .02 .02 .02 .02 .02 .02 .02 .02 .02 .03
9.60 DISCHG .03 .03 .03 .03 .03 .03 .04 .04 .04 .04
10.40 DISCHG .04 .05 .05 .05 .05 .06 .06 .06 .07 .07
11.20 DISCHG .07 .08 .08 .09 .10 .13 .22 .34 .54 6.14
12.00 DISCHG 19.38 38.02 51.98 58.79 59.67 57.18 52.89 48.05 43.91 40.29
12.80 DISCHG 36.86 33.65 30.66 27.94 25.49 23.27 21.28 19.53 17.95 16.66
13.60 DISCHG 15.82 15.02 14.28 13.58 12.93 12.32 11.76 11.23 10.73 10.26
14.40 DISCHG 9.82 9.41 9.01 8.64 8.28 7.94 7.63 7.34 7.08 6.85
15.20 DISCHG 6.63 6.44 6.25 6.07 5.88 5.71 5.56 5.41 5.28 5.16
16.00 DISCHG 5.05 4.96 4.87 4.79 4.72 4.65 4.60 4.54 4.48 4.41
16.80 DISCHG 4.33 4.25 4.18 4.11 4.05 3.99 3.94 3.89 3.85 3.80
17.60 DISCHG 3.77 3.73 3.71 3.67 3.62 3.56 3.50 3.44 3.38 3.33
18.40 DISCHG 3.28 3.23 3.18 3.14 3.10 3.07 3.04 3.01 2.99 2.96
19.20 DISCHG 2.94 2.92 2.91 2.89 2.88 2.87 2.86 2.85 2.83 2.80
20.00 DISCHG 2.76 2.71 2.66 2.61 2.57 2.52 2.48 2.44 2.41 2.38
7
TR20 XEQ 6/22/99
REV 09/01/83
GRANDOVER (WEST) COMMERCIAL- POST-DEV. W/PONDS 10 YR, 06/22/99
20.80
21.60 DISCHG
DISCHG 2.35
2.17 2.32
2.16 2.30
2.15 2.27
2.15
22.40 DISCHG 2.11 2.11 2.11 2.11
23.20 DISCHG 2.10 2.10 2.10 2.10

RUNOFF VOLUME ABOVE BASEFLOW = 2.92 WATERSHED INCHES,
20 JOB 1 PASS 1
30 PAGE 11
2.25 2.24 2.22 2.21 2.19 2.18
2.14 2.13 2.13 2.12 2.12 2.12
2.10 2.10 2.10 2.10 2.10 2.10
2.09 2.09 2.09 2.09 2.09 2.06
103.56 CFS-HRS, 8.56 ACRE-FEET; BASE FLOW = .00 CFS
PERATION ADDHYD CROSS SECTION 11
INPUT HYDROGRAPHS= 6,3 OUTPUT HYDROGRAPH= 1
?***ELEVATION OUTPUT OPTION REQUESTED BUT NO ELEVATIONS GIVEN***
PEAK TIME(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET)
12.16 596.90 (NULL)
IME(HRS) FIRST HYDROGRAPH POINT = .00 HOURS TIME INCREMENT = .08 HOURS
4.00 DISCHG .00 .00 .00 .00 .00 .00 .01
4.80 DISCHG .01 .02 .02 .02 .02 .03 .03
5.60 DISCHG .04 .05 .05 .06 .06 .06 .07
6.40 DISCHG .09 .10 .10 .11 .12 .13 .13
7.20 DISCHG .16 .17 .18 .20 .20 .21 22
8.00 DISCHG .26 .27 .28 .29 .31 .31 .
.32
8.80 DISCHG .34 .35 .36 .36 .37 .38 .38
9.60 DISCHG .41 .42 .43 .44 .45 .46 .47
10.40 DISCHG .51 .53 .54 .56 .57 1.50 6.40
11.20 DISCHG 23.09 26.78 30.37 36.37 42.69 52.44 73.58
12.00 DISCHG 408.56 549.66 596.82 541.82 444.60 354.85 287.42
12.80
13.60 DISCHG
DISCHG 148.59
64.30 132.35
60.77 120.09
57.44 109.32
54.45 100.01
51.78 91.78
49.37 84.55
47.24
14.40 DISCHG 40.45 39.35 38.24 37.12 35.96 34.81 33.74
15.20 DISCHG 30.56 30.00 29.46 28.85 28.17 27.49 26.86
16.00 DISCHG 25.02 24.70 24.42 24.19 23.98 23.80 23.65
16.80 DISCHG 22.50 22.07 21.66 21.29 20.97 20.69 20.45
17.60 DISCHG 19.77 19.66 19.56 19.43 19.20 18.84 18.42
18.40 DISCHG 17.01 16.76 16.54 16.35 16.19 16.05 15.93
19.20 DISCHG 15.59 15.54 15.49 15.45 15.41 15.38 15.35
20.00 DISCHG 14.78 14.40 14.03 13.68 13.38 13.11 12.87
20.80
21.60 DISCHG
DISCHG 12.22
11.59 12.10
11.57 12.01
11.55 11.93
11.53 11.85
11.51 11.79
11.50 11.74
11.49
22.40 DISCHG 11.45 11.45 11.44 11.44 11.44 11.43 11.43
23.20 DISCHG 11.43 11.43 11.43 11.42 11.42 11.42 11.42
DRAINAGE AREA = .29 SQ.MI.
.01 .01 .01
.03 .04 .04
.07 .08 .09
.14 .15 .16
.23 .24 .25
.33 .33 .34
.39 .40 .41
.48 .49 .50
10.99 15.26 19.25
107.84 164.46 260.34
235.36 199.18 170.77
78.33 72.85 68.12
45.29 43.46 41.78
32.78 31.94 31.20
26.31 25.82 25.39
23.50 23.29 22.94
20.24 20.06 19.90
18.01 17.64 17.31
15.83 15.74 15.66
15.33 15.27 15.09
12.67 12.50 12.35
11.69 11.65 11.62
11.48 11.47 11.46
11.43 11.43 11.43
11.42 11.38 11.22
RUNOFF VOLUME ABOVE BASEFLOW = 3.52 WATERSHED INCHES, 670.17 CFS-HRS, 55.38 ACRE-FEET; BASEFLOW = .00 CFS
RERATION RUNOFF CROSS SECTION 12
OUTPUT HYDROGRAPH= 2
AREA= .10 SQ MI INPUT RUNOFF CURVE= 82. TIME OF CONCENTRATION= .25 HOURS
INTERNAL HYDROGRAPH TIME INCREMENT= .0333 HOURS
7
TR20 XEQ 6/22/99
REV 09/01/83
GRANDOVER (WEST) COMMERCIAL- POST-DEV. W/PONDS 10 YR, 06/22/99 20
30
PEAK TIME(HRS) PEAK DISCHARGE(CFS)
12.05 241.32
15.16 8.22
16.44 7.10
17.66 5.94
19.65 4.78
IME(HRS) FIRST HYDROGRAPH POINT = .00 HOURS
6.40 DISCHG .02 .05 .09 .14
7.20
8.00 DISCHG
DISCHG .47
.90 .51
.96 .56
1.07 .60
1.18
8.80 DISCHG 1.92 2.00 2.07 2.14
9.60 DISCHG 3.07 3.29 3.48 3.62
10.40 DISCHG 5.15 5.59 5.99 6.65
11.20 DISCHG 12.15 12.98 14.15 15.75
12.00 DISCHG 225.96 237.16 177.37 110.84
12.80 DISCHG 27.00 25.05 22.91 21.56
13.60 DISCHG 14.90 13.98 13.31 12.86
14.40 DISCHG 10.13 9.73 9.46 9.04
15.20 DISCHG 8.22 8.20 7.98 7.59
16.00 DISCHG 7.07 7.08 7.08 7.08
16.80 DISCHG 6.10 6.00 5.96 5.94
17.60 DISCHG 5.94 5.94 5.94 5.78
18.40 DISCHG 4.77 4.77 4.77 4.77
19.20 DISCHG 4.78 4.78 4.78 4.78
20.00 DISCHG 3.89 3.73 3.66 3.62
20.80
21.60 DISCHG
DISCHG 3.60
3.60 3.60
3.60 3.60
3.61 3.60
3.61
22.40 DISCHG 3.61 3.61 3.61 3.61
23.20 DISCHG 3.62 3.62 3.62 3.62

RUNOFF VOLUME ABOVE BASEFLOW = 3.24 WAT ERSHED INCHES,
PEAK ELEVATION(FEET)
(RUNOFF)
(RUNOFF)
(RUNOFF)
(RUNOFF)
(RUNOFF)
TIME INCREMENT = .08 HOURS
.19 .24 .28
.65 .69 .73
1.28 1.42 1.57
2.28 2.47 2.62
3.74 3.84 3.98
7.38 7.95 8.73
17.56 27.32 49.30
75.91 55.26 42.91
20.27 18.84 17.94
12.35 11.96 11.67
8.62 8.38 8.28
7.30 7.17 7.11
7.09 7.09 7.09
5.93 5.93 5.93
5,40 5.06 4.90
4.77 4.77 4.77
4.78 4.78 4.78
3.61 3.60 3.60
3.60 3.60 3.60
3.61 3.61 3.61
3.61 3.61 3.61
3.62 3.62 3.62
DRAINAGE AREA =
.33 .38
.78 .82
1.68 1.77
2.74 2.83
4.23 4.47
9.60 10.28
69.34 101.72
36.40 31.98
17.13 16.18
11.22 10.83
8.24 8.22
7.09 7.08
7.03 6.71
5.93 5.94
4.82 4.79
4.77 4.77
4.78 4.63
3.60 3.60
3.60 3.60
3.61 3.61
3.61 3.62
3.61 3.46
JOB 1 PASS 1
PAGE 12
10 SQ.MI.
.42
.86
1.85
2.92
4.72
11.13
165.41
28.83
15.53
10.55
8.22
7.07
6.32
5.94
4.78
4.78
4.24
3.60
3.60
3.61
3.62
3.06
209.42 CFS-HRS, 17.31 ACRE-FEET; BASEFLOW = .00 CFS
PERATION ADDHYD CROSS SECTION 13
INPUT HYDROGRAPHS= 1,2 OUTPUT HYDROGRAPH= 3
***ELEVATION OUTPUT OPTION REQUESTED BUT NO ELEVATIONS GIVEN***
PEAK TIME(HRS) PEAK DISCHARGE(CFS)
12.11 801.61
lIME(HRS)
4.00
4.80
5.60
6.40
7.20
PEAK ELEVATION(FEET)
(NULL)
FIRST HYDROGRAPH POINT = .00 HOURS TIME INCREMENT = .08 HOURS DRAINAGE AREA = .39 SQ.MI.
DISCHG .00 .00 .00 .00 .00 .00 .01 .01 .01 .01
DISCHG .01 .02 .02 .02 .02 .03 .03 .03 .04 .04
DISCHG .04 .05 .05 .06 .06 .06 .07 .07 .08 .09
DISCHG .11 .15 .20 .25 .31 .36 .42 .47 .53 .58
DISCHG .63 .69 .74 .80 .85 .90 .96 1.01 1.06 1.11

J
1
TR20 XEO 6/22/99 GRANDOVER (WEST) COMMERCIAL- POST-DEV. W/PONDS 10 YR, 06/22/99 20 JOB 1 PASS 1
1 REV 09/01/83 30 PAGE 13
1 8.00 DISCHG 1.16 1.23 1.35 1.48 1.59 1.74 1.89
8.80 DISCHG 2.27 2.35 2.42 2.50 2.65 2.85 3.00
9.60 DISCHG 3.48 3.71 3.91 4.07 4.19 4.30 4.46
10.40 DISCHG 5.66 6.12 6.53 7.21 7.95 9.45 15.13
11.20 DISCHG 35.23 39.76 44.51 52.12 60.25 79.76 122.88
12.00 DISCHG 634.52 786.83 774.20 652.67 520.52 410.11 330.33
12.80 DISCHG 175.59 157.39 143.00 130.89 120.28 110.62 102.49
13.60 DISCHG 79.20 74.75 70.75 67.31 64.13 61.33 58.90
14.40 DISCHG 50.58 49.08 47.70 46.17 44.58 43.20 42.03
15.20 DISCHG 38.78 38.20 37.44 36.43 35.47 34.66 33.98
16.00 DISCHG 32.10 31.78 31.50 31.27 31.07 30.89 30.74
16.80 DISCHG 28.60 28.07 27.62 27.23 26.90 26.62 26.38
17.60 DISCHG 25.71 25.60 25.49 25.22 24.60 23.90 23.32
18.40 DISCHG 21.78 21.53 21.31 21.12 20.96 20.82 20.70
19.20 DISCHG 20.37 20.31 20.27 20.23 20.19 20.16 20.14
20.00 DISCHG 18.67 18.13 17.68 17.31 16.98 16.71 16.47
20.80 DISCHG 15.81 15.70 15.61 15.53 15.45 15.39 15.34
21.60 DISCHG 15.20 15.17 15.15 15.13 15.12 15.10 15.09
22.40 DISCHG 15.06 15.06 15.06 15.05 15.05 15.05 15.05
23.20 DISCHG 15.04 15.04 15.04 15.04 15.04 15.04 15.04
RUNOFF VOLUME ABOVE BASEFLOW = 3.45 WATERSHED INCHES, 879.58 CFS-HRS, 72.69 ACRE-
?PERATION RESVOR STRUCTURE 15
INPUT HYDROGRAPH= 3 OUTPUT HYDROGRAPH= 4
SURFACE ELEVATION= 770.86
PEAK TIME(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET)
12.22 697.67 773.62
?IME(HRS) FIRST HYDROGRAPH POINT = .00 HOURS TIME INCREMENT = .08 HOURS
7.20 DISCHG .00 .00 .00 .00 .00 .01 .01
7.20 ELEV 770.86 770.86 770.86 770.86 770.86 770.88 770.88
8.00 DISCHG .01 .01 .01 .01 .01 .01 .01
8.00 ELEV 770.89 770.89 770.90 770.90 770.90 770.91 770.91
8.80 DISCHG .02 .02 .02 .02 .03 .03 .03
8.80 ELEV 770.93 770.93 770.94 770.94 770.95 770.96 770.96
9.60 DISCHG .04 .04 .85 1.79 2.49 3.01 3.42
9.60 ELEV 770.99 771.00 771.01 771.01 771.02 771.02 771.02
10.40 DISCHG 4.70 5.05 5.43 5.86 6.37 7.07 8.62
10.40 ELEV 771.03 771.03 771.03 771.04 771.04 771.04 771.05
11.20 DISCHG 22.95 27.28 31.71 36.66 42.48 50.68 65.77
11.20 ELEV 771.14 771.17 771.20 771.23 771.26 771.31 771.41
12.00 DISCHG 362.44 538.75 673.06 695.49 634.99 540.73 447.86
12.00 ELEV 772.68 773.21 773.56 773.62 773.46 773.22 772.97
12.80 DISCHG 231.19 200.70 176.90 159.52 149.40 139.29 129.53
12.80 ELEV 772.23 772.13 772.05 771.98 771.92 771.86 771.80
13.60 DISCHG 97.54 91.41 85.85 80.84 76.33 72.28 68.65
13.60 ELEV 771.60 771.56 771.53 771.50 771.47 771.45 771.42
2.01 2.10 2.19
3.13 3.23 3.33
4.71 4.96 5.22
20.58 25.54 30.38
177.18 266.17 425.76
271.76 231.16 199.59
95.45 89.03 83.66
56.51 54.29 52.33
41.02 40.16 39.42
33.39 32.89 32.46
30.54 29.99 29.26
26.17 25.99 25.84
22.84 22.43 22.08
20.60 20.51 20.44
20.11 19.89 19.33
16.27 16.09 15.94
15.30 15.26 15.22
15.08 15.08 15.07
15.04 15.04 15.04
15.04 14.84 14.29
FEET; BASEFLOW = .00 CFS
DRAINAGE AREA = .39 SQ.MI.
.01 .01 .01
770.88 770.89 770.89
.02 .02 .02
770.91 770.92 770.92
.03 .03 .03
770.97 770.98 770.98
3.76 4.08 4.38
771.02 771.02 771.03
11.38 14.86 18.76
771.07 771.09 771.12
90.88 129.86 213.00
771.56 771.80 772.17
378.68 318.73 270.03
772.73 772.53 772.36
120.42 112.03 •104.37
771.74 771.69 771.64
65.39 62.41 59.70
771.40 771.39 771.37

T R20 XEO 6/22/99 GRANDOVER (WEST) COMMERCIAL- POST-DEV. W/PONDS 10 YR, 06/22/99 20 JOB 1 PASS 1
REV 09/01/83 30 PAGE 14
14.40 DISCHG 57.24 55.03 53.05 51.23 49.49 47.82 46.27 44
85 43
58 42
45
14.40 ELEV 771.35 771.34 771.33 771.32 771.31 771.29 771.29 .
771.28 .
771.27 .
771.26
15.20 DISCHG 41.45 40.57 39.75 38.91 38.03 37.14 36.30 35.52 34.81 34.18
15.20 ELEV 771.26 771.25 771.25 771.24 771.23 771.23 771.22 771.22 771.21 771.21
16.00 DISCHG 33.61 33.11 32.67 32.29 31.96 31.67 31.41 31.18 30.91 30.53
16.00 ELEV 771.21 771.20 771.20 771.20 771.20 771.20 771.19 771.19 771.19 771.19
16.80 DISCHG 30.05 29.54 29.03 28.55 28.11 27.71 27.35 27.03 26.75 26.50
16.80 ELEV 771.19 771.18 771.18 771.18 771.17 771.17 771.17 771.17 771.16 771.16
17.60 DISCHG 26.28 26.10 25.93 25.76 25.51 25.13 24.68 24.20 23.73 23.29
17.60 ELEV 771.16 771.16 771.16 771.16 771.16 771.15 771.15 771.15 771.15 771.14
18.40
18.40 DISCHG
ELEV 22.89
771.14 22.52
771.14 22.19
771.14 21.90
771.14 21.65
771.13 21.42
771.13 21.22
771.13 21.05
771.13 20.91
771.13 20.78
771.13
19.20 DISCHG 20.67 20.57 20.49 20.41 20.35 20.30 20.26 20.22 20.15 19.99
19.20 ELEV 771.13 771.13 771.13 771.13 771.13 771.13 771.12 771.12 771.12 771.12
20.00 DISCHG 19.69 19.31 18.89 18.48 18.08 17.71 17.38 17.08 16.81 16.57
20.00 ELEV 771.12 771.12 771.12 771.11 771.11 771.11 771.11 771.11 771.10 771.10
20.80 DISCHG 16.37 16.19 16.03 15.89 15.77 15.67 15.58 15.50 15.43 15.38
20.80 ELEV 771.10 771.10 771.10 771.10 771.10 771.10 771.10 771.10 771.10 771.09
21.60 DISCHG 15.33 15.28 15.25 15.22 15.19 15.17 15.15 15.13 15.11 15.10
21.60 ELEV 771.09 771.09 771.09 771.09 771.09 771.09 771.09 771.09 771.09 771.09
22.40 DISCHG 15.09 15.08 15.07 15.07 15.06 15.06 15.06 15.05 15.05 15
05
22.40 ELEV 771.09 771.09 771.09 771.09 771.09 771.09 771.09 771.09 771.09 .
771.09
23.20 DISCHG 15.05 15.05 15.04 15.04 15.04 15.04 15.04 15.04 15.01 14.88
23.20 ELEV 771.09 771.09 771.09 771.09 771..09 771.09 771.09 771.09 771.09 771.09
RUNOFF VOLUME ABOVE BASE
L
F
OW = 3.42 WAT ERSHED INCHES, 871.10 CFS-HRS, 71.99 ACRE-FEET; BASEFLOW = .00 CFS
ERATION REACH CROSS SECTION 15
INPUT HYDROGRAPH= 4 OUTPUT HYDROGRAPH= 5
LENGTH = 1200.00 FEET INPUT = COEFFICIENTS RELATED TO CROSS SECTIONAL AREA, X= .85, M= 1.38
MODIFIED ATT-KIN ROUTING COEFFICIENT = .94 PEAK TRAVEL TIME = .08 HOURS
*** WARNING REACH 15 ATT-KIN COEFF.(C) GREATER THAN 0.667, CONSIDER REDUCING MAIN TIME INCREMENT ***
PEAK TIME(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET)

ME
HRS 12.31 694.78 (NULL)
(
) FIRST HYDROGR APH POINT = .00 HOURS TIME INCR EMENT = .08 HOURS DRAINAGE AREA = .39 SO.MI.
7.20 DISCHG .00 .00 .00 .00 .00 .00 .00 .00 .01 .01
8.00 DISCHG .01 .01 .01 .01 .01 .01 .01 .01 .01 .02
8.80 DISCHG .02 .02 .02 .02 .02 .03 .03 .03 .03 .03
9.60 DISCHG .03 .04 .04 .81 1.73 2.44 2.98 3.39 3.74 4.06
10.40 DISCHG 4.36 4.68 5.03 5.41 5.83 6.34 7.03 8.53 11.21 14.65
11.20 DISCHG 18.53 22.70 27.02 31.44 36.36 42.13 50.19 64.88 89.40 127.56
12.00 DISCHG 208.14 353.67 528.23 664.83 693.74 638.33 546.28 453.45 382.93 322.38
12.80
13.60 DISCHG
DISCHG 273.01
104.84 233.56
97.95 202.57
91.78 178.36
86.18 160.59
81.14 150.04
76.60 139.90
72.52 130.12
68.87 120.97
65.59 112.54
62.59
14.40 DISCHG 59.87 57.39 55.17 53.17 51.34 49.59 47.92 46.36 44.94 43.66
15.20 DISCHG 42.52 41.51 40.62 39.80 38.96 38.08 37.20 36.35 35.57 34.86

I
T R20 XEQ 6/22/99 GRANDOVER (WEST) COMMERCIAL- POST-DEV. W/PONDS 10 YR, 06/22/99 20 JOB 1 PASS 1
REV 09/01/83 30 PAGE 15
16.00
16.80 DISCHG
DISCHG 34.22
30.55 33.65
30.08 33.14
29.57 32.70
29.06 32.31
28.58 31.98
28.14 31.68
27.73 31.43
27.37 31.20
27.05 30.93
26.76
17.60 DISCHG 26.51 26.30 26.11 25.94 25.77 25.52 25.15 24.70 24.23 23.76
18.40 DISCHG 23.32 22.91 22.54 22.21 21.92 21.66 21.43 21.24 21.06 20.91
19.20 DISCHG 20.78 20.67 20.57 20.49 20.42 20.36 20.30 20.26 20.22 20.15
20.00 DISCHG 20.00 19.71 19.33 18.92 18.50 18.10 17.73 17.40 17.09 16.83
20.80 DISCHG 16.59 16.38 16.20 16.04 15.90 15.78 15.67 15.58 15.51 15.44
21.60 DISCHG 15.38 15.33 15.29 15.25 15.22 15.19 15.17 15.15 15.13 15.11
22.40 DISCHG 15.10 15.09 15.08 15.07 15.07 15.06 15.06 15.06 15.05 15.05
23.20 DISCHG 15.05 15.05 15.05 15.04 15.04 15.04 15.04 15.04 15.04 15.01
RUNOFF VOLUME ABOVE BASEFLOW = 3.41 WA TERSHED INCHES, 869.95 CFS -HRS, 71 .89 ACRE-FEET ; BASEFLOW = .00 CFS
PERATION RUNOFF CROSS SECTION 16
OUTPUT HYDROGRAPH= 6
AREA= .14 SQ MI INPUT RUNOFF CURVE= 83. TIME OF CONCENTRATION= .17 HOURS
INTERNAL HYDROGRAPH TIME INCREMENT= .0227 HOURS
PEAK TIME(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET)
12.00 380.91 (RUNOFF)
15.17 11.67 (RUNOFF)
16.44 10.09 (RUNOFF)
17.66 8.42 (RUNOFF)
19.65 6.78 (RUNOFF)
23.64 5.13 (RUNOFF)
ME(HRS) FIR ST HYDROGRAPH POINT = .00 HOURS TIME INCREMENT = .08 H OURS DRAINAGE AREA = .14 SQ.M1.
5.60 DISCHG .00 .00 .00 .00 .00 .00 .03 .09 .16 .23
6.40 DISCHG .30 .38 .45 .52 .59 .66 .72 .79 .86 .92
7.20 DISCHG .99 1.05 1.12 1.18 1.24 1.30 1.36 1.42 1.48 1.54
8.00 DISCHG 1.60 1.74 1.97 2.11 2.28 2.56 2.75 2.88 2.99 3.09
a 8.80 DISCHG 3.19 3.29 3.39 3.51 3.84 4.13 4.30 4.43 4.55 4.67
9.60 DISCHG 5.00 5.38 5.60 5.76 5.90 6.03 6.33 6.79 7.08 7.53
10.40 DISCHG 8.43 8.97 9.58 10.99 11.92 12.63 14.19 15.36 16.13 17.81
11.20 DISCHG 19.24 20.17 22.71 25.21 28.01 58.62 98.61 119.61 197.85 319.24
12.00 DISCHG 380.81 328.41 171.19 101.30 75.37 56.28 48.25 44.85 40.52 38.24
12.80
13.60 DISCHG
DISCHG 36.86
20.24 32.98
18.84 30.46
18.33 29.41
17.71 27.09
16.94 25.35
16.64 24.70
16.18 23.26
15.38 21.96
15.05 21.49
14.66
14.40 DISCHG 13.84 13.44 13.11 12.29 11.83 11.69 11.66 11.65 11.65 11.66
15.20 DISCHG 11.66 11.61 10.96 10.32 10.11 10.05 10.03 10.03 10.03 10.03
16.00 DISCHG 10.04 10.04 10.05 10.05 10.05 10.06 10.06 9.85 9.05 8.60
16.80 DISCHG 8.46 8.42 8.41 8.40 8.41 8.41 8.41 8.41 8.42 8.42
17.60 DISCHG 8.42 8.42 8.41 7.93 7.17 6.88 6.79 6.76 6.75 6.75
18.40 DISCHG 6.75 6.76 6.76 6.76 6.76 6.76 6.76 6.77 6.77 6.77
19.20 DISCHG 6.77 6.77 6.77 6.77 6.78 6.78 6.78 6.77 6.28 5.52
20.00 DISCHG 5.22 5.13 5.10 5.09 5.09 5.09 5.09 5.09 5.09 5.10
1 20,110
21.60 DISCHG
DISCHG 5.10
5.10 5.10
5.11 5.10
5.11 5.10
5.11 5.10
5.11 5.10
5.11 5.10
5.11 5.10
5.11 5.10
5.11 5.10
5.11
22.40 DISCHG 5.11 5.11 5.11 5.11 5.12 5.12 5.12 5.12 5.12 5.12

TR20 XEQ 6/22199 GRANDOVER (WEST) COMMERCIAL- POST-DEV. W/PONDS 10 YR, 06/22/99 20 JOB 1 PASS 1
REV 09/01/83 30 PAGE 16
23.20 DISCHG 5.12 5.12 5.12 5.12 5.12 5.12 5.12 5.11 4.62 3.85
RUNOFF VOLUME ABOVE BASEFLOW = 3.35 WATERSHED INC HES, 302.73 CFS-HRS, 25 .02 ACRE-FEET; BASEFLOW = .00 CFS
-OPERATION ADDHYD CROSS SECTION 17
INPUT HYDROGRAPHS= 5,6 OUTPUT HYDROGRAPH= 7
***ELEVAT ION OUTPUT OPTION REQUESTED BUT NO ELEVATIONS GIVEN***
PEAK TIME(HRS) PEAK DISCHARGE(CFS) P EAK ELEVATI ON(FEET)
12.28
23.64 777.36
20.17 (NULL)
(NULL)

TIME(HRS) FIRST HYDROGRAPH POINT = .00 HOURS TIME INCRE MENT = .08 HOURS DRAINAGE AREA = .53 SQ.MI.
5.60 DISCHG .00 .00 .00 .00 .00 .00 .03 .09 .16 .23
6.40 DISCHG .30 .38 .45 .52 .59 .66 .72 .79 .86 .92
7.20 DISCHG .99 1.05 1.12 1.18 1.24 1.30 1.37 1.43 1.49 1.55
8.00 DISCHG 1.61 1.74 1.98 2.12 2.29 2.57 2.76 2.89 3.01 3.11
8.80 DISCHG 3.21 3.31 3.41 3.53 3.86 4.15 4.33 4.46 4.58 4.71
9.60 DISCHG 5.03 5.42 5.64 6.57 7.63 8.48 9.30 10.18 10.82 11.60
10.40 DISCHG 12.80 13.65 14.62 16.40 17.75 18.97 21.22 23.89 27.35 32.46
11.20 DISCHG 37.76 42.87 49.73 56.65 64.37 100.75 148.81 184.50 287.25 446.79
12.00 DISCHG 588.96 682.08 699.42 766.12 769.11 694.61 594.52 498.30 423.45 360.62
12.80 DISCHG 309.87 266.54 233.03 207.77 187.68 175.39 164.60 153.38 142.94 134.02
13.60 DISCHG 125.08 116.79 110.11 103.90 98.08 93.25 88.70 84.26 80.63 77.25
14.40 DISCHG 73.70 70.84 68.28 65.46 63.18 61.29 59.58 58.01 56.59 55.32
15.20 DISCHG 54.18 53.13 51.59 50.12 49.07 48.13 47.23 46.38 45.60 44.89
16.00 DISCHG 44.25 43.69 43.19 42.75 42.37 42.03 41.74 41.28 40.24 39.52
16.80 DISCHG 39.01 38.50 37.98 37.47 36.99 36.55 36.15 35.79 35.47 35.18
17.60 DISCHG 34.94 34.72 34.52 33.87 32.94 32.40 31.94 31.47 30.98 30.51
18.40 DISCHG 30.07 29.67 29.30 28.97 28.68 28.42 28.20 28.00 27.83 27.68
19.20 DISCHG 27.55 27.44 27.35 27.27 27.20 27.13 27.08 27.02 26.49 25.67
20.00 DISCHG 25.22 24.84 24.43 24.01 23.59 23.19 22.83 22.49 22.19 21.92
20.80 DISCHG 21.68 21.48 21.29 21.14 21.00 20.88 20.77 20.69 20.61 20.54
21.60 DISCHG 20.48 20.43 20.39 20.36 20.32 20.30 20.28 20.26 20.24 20.23
22.40 DISCHG 20.21 20.20 20.20 20.19 20.18 20.18 20.17 20.17 20.17 20.17
23.20 DISCHG 20.17 20.17 20.17 20.17 20.17 20.17 20.17 20.15 19.66 18.86
RUNOFF VOLUME ABOVE BASEFLOW = 3.40 WATERSHED INCHES, 1172.68 CFS- HRS, 96. 91 ACRE-FEET; BASEFLOW = .00 CFS
PERATION RESVOR STRUCTURE 18
INPUT HYDRO GRAPH= 7 OUTPUT HYDROGRAPH= 1
SURFACE ELEVATION= 753.50
PEAK TIME(HRS) PEAK DISCHARGE(CFS) PE AK ELEVATIO N(FEET)
12.46 627.86 759.09
IME(HRS) FIRST HYDROGRAPH POINT = .00 HOURS TIME INCREM ENT = .08 HOURS DRAINAGE AREA = .53 SQ.MI.
J

TR20 XEO 6/22/99 GRANDOVER (WEST) COMMERCIAL- POST-DEV. W/PONDS 10 YR, 06/22/99 20 JOB 1 PASS 1
REV 09/01/83 30 PAGE 17
6.40 DISCHG .01 .01 .01 .01 .02 .02 .03 .04 .04 .05
6.40 ELEV 753.50 753.50 753.51 753.51 753.51 753.51 753.52 753.52 753.52 753.53
7.20 DISCHG .06 .06 .07 .08 .09 .10 .11 .12 .13 .14
7.20 ELEV 753.53 753.53 753.54 753.54 753.55 753.55 753.56 753.56 753.57 753.57
8.00 DISCHG .15 .16 .18 .19 .21 .23 .25 .27 .29 .31
8.00 ELEV 753.58 753.59 753.59 753.60 753.61 753.62 753.63 753.64 753.65 753.66
8.80 DISCHG .33 .36 .38 .41 .43 .46 .49 .52 .55 .59
8.80
9.60 ELEV
DISCHG 753.68
.62 753.69
.66 753.70
.70 753.71
.74 753.73
.79 753.74
.85 753.76
.92 753.78
1.00 753.79
1.10 753.81
1.21
9.60 ELEV 753.83 753.85 753.87 753.89 753.92 753.95 753.98 754.01 754.04 754.08
10.40 DISCHG 1.34 1.47 1.60 1.76 1.93 2.11 2.30 2.53 2.74 2.93
10.40 ELEV 754.11 754.15 754.19 754.23 754.28 754.34 754.39 754.46 754.53 754.62
11.20 DISCHG 3.16 3.43 3.73 9.33 15.81 24.25 41.11 68.28 105.17 166.47
11.20 ELEV 754.72 754.84 754.98 755.10 755.22 755.37 755.60 755.88 756.20 756.65
12.00 DISCHG 255.08 351.88 439.12 513.00 580.39 620.48 626.85 605.56 567.27 520.89
12.00 ELEV 757.21 757.76 758.21 758.56 758.87 759.06 759.08 758.99 758.81 758.60
12.80 DISCHG 473.40 427.33 382.19 339.16 301.70 272.40 247.42 225.85 206.21 188.72
12.80
13.60 ELEV
DISCHG 758.37
173.44 758.15
159.88 757.92
147.89 757.69
138.23 757.49
129.97 757.32
122.36 757.17
115.39 757.04
108.98 756.92
103.09 756.80
97.73
13.60 ELEV 756.70 756.61 756.53 756.46 756.39 756.33 756.28 756.23 756.18 756.14
14.40 DISCHG 92.79 88.24 84.09 80.27 76.82 73.66 70.80 68.20 65.84 63.70
14.40 ELEV 756.10 756.06 756.03 756.00 755.96 755.93 755.90 755.88 755.85 755.83
15.20 DISCHG 61.76 60.01 58.35 56.73 55.19 53.76 52.44 51.22 50.09 49.04
15.20 ELEV 755.81 755.79 755.78 755.76 755.74 755.73 755.72 755.70 755.69 755.68
16.00 DISCHG 48.07 47.19 46.37 45.64 44.97 44.37 43.83 43.33 42.78 42.15
16.00 ELEV 755.67 755.66 755.65 755.65 755.64 755.63 755.63 755.62 755.62 755.61
16.80 DISCHG 41.53 40.92 40.34 39.78 39.22 38.69 38.18 37.70 37.25 36.84
16.80 ELEV 755.61 755.60 755.59 755.59 755.58 755.58 755.57 755.57 755.56 755.56
17.60 DISCHG 36.45 36.10 35.78 35.44 35.00 34.49 33.99 33.50 33.00 32.52
17.60 ELEV 755.55 755.55 755.55 755.54 755.54 755.53 755.53 755.52 755.52 755.51
18.40 DISCHG 32.04 31.57 31.13 30.87 30.62 30.35 30.10 29.84 29.60 29.37
18.40 ELEV 755.51 755.50 755.50 755.50 755.49 755.49 755.48 755.48 755.47 755.47
19.20 DISCHG 29.14 28.94 28.74 28.56 28.39 28.24 28.09 27.96 27.81 27.59
19.20 ELEV 755.46 755.46 755.46 755.45 755.45 755.45 755.44 755.44 755.44 755.44
20.00
20.00 DISCHG
ELEV 27.32
755.43 27.03
755.42 26.73
755.42 26.41
755.41 26.08
755.41 25.74
755.40 25.40
755.40 25.05
755.39 24.71
755.38 24.37
755.38
20.80 DISCHG 24.05 23.73 23.44 23.16 22.89 22.64 22.41 22.20 22.00 21.82
20.80 ELEV 755.37 755.36 755.36 755.35 755.35 755.34 755.34 755.34 755.33 755.33
21.60 DISCHG 21.66 21.51 21.37 21.24 21.13 21.02 20.93 20.85 20.77 20.70
21.60 ELEV 755.33 755.32 755.32 755.32 755.32 755.32 755.31 755.31 755.31 755.31
22.40 DISCHG 20.64 20.59 20.54 20.49 20.46 20.42 20.39 20.36 20.34 20.32
22.40 ELEV 755.31 755.31 755.31 755.31 755.30 755.30 755.30 755.30 755.30 755.30
23.20 DISCHG 20.30 20.28 20.27 20.25 20.24 20.23 20.23 20.22 20.18 20.06
23.20 ELEV 755.30 755.30 755.30 755.30 755.30 755.30 755.30 755.30 755.30 755.30
RUNOFF VOLUME ABOVE BASEFLOW = 3.27 WAT ERSHED INCHES, 11 28.19 CFS- HRS, 93. 23 ACRE-FEET; BASEFLOW = .00 CFS
ECUTIVE CONTROL OPERATION ENDCMP COMPUTATIONS COMPLETED FOR PASS 1 RECORD ID 480
GI
TR20 XEa 6/22/99 GRANDOVER (WEST) COMMERCIAL- POST-DEV. W/PONDS 10 YR, 06/22/99
REV 09/01/83
-XECUTIVE CONTROL OPERATION ENDJOB

ill] 20 JOB 1 PASS 2

30 PAGE 18
RECORD ID 490
2

TR20 XEQ 6/22/99
Ll REV 09/01/83
GRANDOVER (WEST) COMMERCIAL- POST-DEV. W/PONDS 10 YR, 06/22/99
20 JOB 1 SUMMARY
30 PAGE 20

?TR20 XEQ 6/22/99 GRANDOVER (WEST) COMMERCIAL- POST-DEV. W/PONDS 10 YR, 06/ 22/99 20 JOB 1 SUMMARY
REV 09/01/83 30 PAGE 19
SUMMARY T ABL E 1 - SELECTED RESU LTS OF STANDARD AND EXECUTIVE CONTROL INSTRUCTIONS IN THE ORDER PERFORMED
(A STAR(*) AF TER THE PEAK DI SCHARGE TIME A ND RATE ( CFS) VALUES INDICATES A FLAT TOP HYDROGRAPH
A QUESTION M ARK(?) INDICATE S A HYDROGRAPH WITH PEA K AS LAST POINT.)
_SECTION/ STANDARD RAIN ANTEC MAIN PRECIPITA TION PEAK DISCHARGE
STRUCTURE CONTROL DRAINAGE TABLE MOIST TIME ------ --------- ---------- RUNOFF ------- ---------- -------------- -------
ID OPERATION AREA # COND INCREM BEGIN AMOUNT DURATION AMOUNT ELEVATION TIME RATE RATE
(SQ MI) (HR) (HR) (IN) (HR) (IN) (FT) (HR) (CFS) (CSM)
ALTERNATE 1 STORM 1
SECTION 1 RUNOFF .24 2 2 .08 .0 5.20 24.00 4.05 --- 12.05 693.30 2888.7
STRUCTURE 16 RESVOR .24 2 2 .08 .0 5.20 24.00 3.66 799.83 12.15 545.92 2274.7
-;SECTION 3 REACH .24 2 2 .08 .0 5.20 24.00 3.66 --- 12.15 545.92 2274.7
;SECTION 4 RUNOFF .03 2 2 .08 .0 5.20 24.00 4.06 --- 12.04 73.24 2929.6
STRUCTURE 17 RESVOR .03 2 2 .08 .0 5.20 24.00 3.37 817.20 12.14 56.73 2269.4
:SECTION 6 REACH .03 2 2 .08 .0 5.20 24.00 3.37 --- 12.14 56.73 2269.4
-IASECTION 7 RUNOFF .03 2 2 .08 .0 5.20 24.00 3.55 --- 12.00 85.66 2855.5
XSECTION 8 ADDHYD .05 2 2 .08 .0 5.20 24.00 3.47 --- 12.04 130.17 2366.8
TRUCTURE 1 RESVOR .05 2 2 .08 .0 5.20 24.00 2.92 800.68 12.30 59.77 1086.7
.SECTION 10 REACH .05 2 2 .08 .0 5.20 24.00 2.92 --- 12.30 59.77 1086.7
-vSECTION 11 ADDHYD .29 2 2 .08 .0 5.20 24.00 3.52 --- 12.16 596.90 2023.4
SECTION 12 RUNOFF .10 2 2 .08 .0 5.20 24.00 3.24 --- 12.05 241.32 2413.2
"RSECTION 13 ADDHYD .39 2 2 .08 .0 5.20 24.00 3.45 --- 12.11 801.61 2029.4
STRUCTURE 15 RESVOR .39 2 2 .08 .0 5.20 24.00 3.42 773.62 12.22 697.67 1766.3
SECTION 15 REACH .39 2 2 .08 .0 5.20 24.00 3.41 --- 12.31 694.78 1758.9
XSECTION 16 RUNOFF .14 2 2 .08 .0 5.20 24.00 3.35 --- 12.00 380.91 2720.8
-SECTION 17 ADDHYD .53 2 2 .08 .0 5.20 24.00 3.40 --- 12.28 777.36 1453.0
TRUCTURE 18 RESVOR .53 2 2 .08 .0 5.20 24.00 3.27 759.09 12.46 627.86 1173.6

TR20 XEQ 6/22/99 GRANDOVER (WEST) COMMERCIAL- POST-DEV. W/PONDS 10 YR, 06/22/99 20 JOB 1 SUMMARY
REV 09/01/83 30 PAGE 20
¦SUMMARY TABLE 2 - SELECTED MODIFIED ATT-KIN REACH ROUTINGS IN ORDER OF STANDARD EXECUTIVE CONTROL INSTRUCTIONS
® (A STAR(*) AFTER VOLUME ABOVE BASE(IN) INDICATES A HYDROGRAPH TRUNCATED AT A VALUE EXCEEDING BASE + 10% OF PEAK
A QUESTION MARK(?) AFTER COEFF.(C) INDICATES PARAMETERS OUTSIDE ACCEPTABLE LIMITS, SEE PREVIOUS WARNINGS)
HYDROGRAPH INFORMATION ROUTING PARAMETERS PEAK
OUTFLOW+ VOLUME MAIN ITER- Q AND A PEAK S/Q ATT- TRAVEL TIME
SEC REACH INFLOW OUTFLOW INTERV.AREA BASE- ABOVE TIME ATION EQUATION LENGTH RATIO @PEAK KIN STOR- KINE-
ID LENGTH PEAK TIME PEAK TIME PEAK TIME FLOW BASE INCR # COEFF POWER FACTOR 0/I (K) COEFF AGE MATIC
(FT) (CFS) (HR) (CFS) (HR) (CFS) (HR) (CFS) (IN) (HR) (X) (M) (K*) (Q*) (SEC) (C) (HR) (HR)
ALTERNATE 1 STORM 1
3 1350 545 12.2 545 12.2 --- --- 0 3.66 .08 0 1.60 1.45 .008 1.000 95 1.00? .00 .00
6 800 56 12.2 56 12.2 --- --- 0 3.37 .08 0 1.60 1.44 .013 1.000 117 1.00? .00 .00
10 800 60 12.3 60 12.3 --- --- 0 2.92 .08 0 1.60 1.44 .005 1.000 115 1.00? .00 .00
15 1200 695 12.2 694 12.3 --- --- 0 3.42 .08 1 .850 1.38 .016 .997 161 .947 .08 .04

TR20 XEQ 6/22/99 GRANDOVER (WEST) COMMERCIAL- POST-DEV. W/PONDS 10 YR, 06/22/99 20 JOB 1 SUMMARY
REV 09/01183 30 PAGE 21
UMMARY TABLE 3 - DISCHARGE (CFS) AT XSECTIONS AND STRUCTURES FOR ALL STORMS AND ALTERNATES
XSECTION/ DRAINAGE
TRUCTURE AREA STORM NUMBERS..........
ID (SQ MI) 1
STRUCTURE 18 .53
ALTERNATE 1 627.86
STRUCTURE 17 .03
ALTERNATE 1 56.73
STRUCTURE 16 .24
ALTERNATE 1 545.92
STRUCTURE 15 .39
ALTERNATE 1 697.67
STRUCTURE 1 .05
ALTERNATE 1 59.77
XSECTION 1 .24
ALTERNATE 1 693.30
XSECTION 3 .24
ALTERNATE 1 545.92
[
SECTION 4 .03
ALTERNATE 1 73.24
lXSECTION 6 .03
ALTERNATE 1 56.73
SECTION 7 .03
ALTERNATE 1 85.66
tSECTION 8 .05
13 ALTERNATE 1 130.17
SECTION 10 .05
1 ALTERNATE 1 59.77
XSECTION 11 .29
1 ALTERNATE 1 596.90
XSECTION 12 .10
ALTERNATE 1 241.32
TR20 XEa 6/22/99 GRANDOVER (WEST) COMMERCIAL- POST-DEV. W/PONDS 10 YR, 06/22/99 20 JOB 1 SUMMARY
REV 09/01/83 30 PAGE 22
UMMARY TABLE 3 - DISCHARGE (CFS) AT XSECTIONS AND STRUCTURES FOR ALL STORMS AND ALTERNATES
XSECTION/ DRAINAGE
TRUCTURE AREA STORM NUMBERS..........
ID (SQ MI) 1
XSECTION 13 .39
ALTERNATE 1 801.61
XSECTION 15 .39
ALTERNATE 1 694.78
XSECTION 16 .14
ALTERNATE 1 380.91
XSECTION 17 .53
ALTERNATE 1 777.36
1 END OF 1 JOBS IN THIS RUN
Stop - Program terminated.
EI
7
7
7
7
********************************************************************************
* * TR 20 S/N
?* * HMVersion : 3.40
* TR 20 * Date . 6/24/99
* * Time : 16:38:34
Project Formulation Hydrology * Input file : grand50.t20
* Output file : grand50.out
* * *
* *
***************************************************** ******************* *******
F A
xxxxxxx xxxxxx xxxxx xxxxx
x x x x x x xx
x x x x x x x
x xxxxxx x x x x
x x x x x x x
x x x x xx x
x x x xxxxxxx xxxxx
...........................................
...........................................
...........................................
...........................................
... Full Microcomputer Implementation :..
... by ..
... Haestad Methods, Inc. ..
...........................................
...........................................
...........................................
...........................................
37 Brookside Road * Waterbury, Connecticut 06708 * [phone]

?l
******************80-80 LIST OF INPUT DATA FOR TR-20 HYDROLOGY******************
® JOB TR-20 FULLPRINT 10
TITLE 001 GRANDOVER (WEST) COMMERCIAL- POST-DEV. W/PONDS 50 YR, 06/22/99 20
TITLE 30
3 STRUCT 15 40
8 770.86 0.00 0.00 50
8 771.00 0.04 0.419 60
8 772.00 162.00 3.477 70
8 773.00 458.21 6.654 80
8 774.00 841.78 9.951 90
8 775.00 1296.00 13.370 100
8 775.65 1735.68 16.891 110
8 120
9 ENDTBL 140
3 STRUCT 16 170
8 795.5 0.00 0.00 171
8 796.0 0.30 1.440 172
8 797.1 0.53 4.699 173
8 797.5 30.95 5.917 174
8 798.0 103.12 7.462 175
8 798.5 199.51 9.035 176
8 799.0 315.07 10.635 177
8 800.0 593.51 13.916 178
8 801.0 925.22 17.308 179

8 180
" 8 181
8 182
9 ENDTBL 251
3 STRUCT 17 252
8 814.0 0.00 0.00 253
8 815.0 0.24 0.505 254
8 815.7 0.31 0.884 255
8 816.0 5.26 1.053 256
8 816.5 21.84 1.343 257
8 817.0 44.88 1.645 258
8 818.0 105.11 2.284 259
8 819.0 180.37 2.970 260
8 820.0 368.08 3.705 261
9 ENDTBL 262
3 STRUCT 18 270
8 753.50 0.00 0.00 271
8 754.00 0.95 0.78 272
8 754.50 2.67 1.81 273
8 755.00 3.77 2.83 274
8 755.50 31.14 4.17 275
8 756.00 80.33 5.51 276
8 756.50 143.75 7.19 277

CIS
**********************80-80 LIST OF INPUT DATA (CONTINUED)**********************
8 757.00 218.66 8.86 278
8 757.50 303.52 10.88 279
8 758.00 397.25 12.90 280
8 758.50 499.09 15.27 281
8 759.00 608.43 17.64 282
9 ENDTBL 283
3 STRUCT 01 290
8 798.50 0.00 0.00 291
8 799.00 0.10 0.70 292
8 799.50 0.68 1.54 293
8 800.00 16.87 2.38 294
8 800.50 46.18 3.39 295
8 801.00 84.03 4.39 296
8 801.50 128.80 5.53 297
8 802.00 179.55 6.67 298
8 802.50 235.63 8.01 299
8 803.00 402.66 9.34 300
8 803.50 662.04 10.93 301
8 804.00 982.86 12.51 302
9 ENDTBL 303
6 RUNOFF 1 001 1 0.24 90.00 0.251 1 1 1 360
" 6 RESVOR 2 16 1 2 795.5 1 1 1 1 1 370
6 REACH 3 003 2 3 1350.00 1.6 1.451 1 1 1 380
6 RUNOFF 1 004 4 0.025 90.00 0.231 1 1 1 390
6 RESVOR 2 17 4 5 814.00 1 1 1 1 1 391
6 REACH 3 006 5 6 800.00 1.6 1.441 1 1 1 392
6 RUNOFF 1 007 7 0.03 85.0 0.171 1 1 1 393
6 ADDHYD 4 008 7 6 5 1 1 1 1 1 394
6 RESVOR 2 01 5 4 798.50 1 1 1 1 1 395
6 REACH 3 010 4 6 800.0 1.6 1.441 1 1 1 396
6 ADDHYD 4 011 6 3 1 1 1 1 1 1 397
6 RUNOFF 1 012 2 0.10 82.0 0.251 1 1 1 398
6 ADDHYD 4 013 1 2 3 1 1 1 1 1 399
6 RESVOR 2 15 3 4 770.86 1 1 1 1 1 400
6 REACH 3 015 4 5 1200.00 0.85 1.381 1 1 1 401
6 RUNOFF 1 016 6 0.14 83.00 0.171 1 1 1 402
ADDHYD 4 017 5 6 7 1 1 1 1 1 403
RESVOR 2 18 7 1 753.50 1 1 1 1 1 404
ENDATA 450
7 INCREM 6 0.08 460
Ell
COMPUT 7
001
18
0.0
6.7
1.02 2
01
01
470
ENDCMP 1 480
ENDJOB 2 490
********** ****** ** ***********END OF 80-80 LIST**************** ****************
?4
TR20 XEO 6/24/99
REV 09/01/83
GRANDOVER (WEST) COMMERCIAL- POST-DEV. W/PONDS 50 YR, 06/22/99
20 JOB 1 PASS 1
30 PAGE 1
FILE NO. 1
0
COMPUTER PROGRAM FOR PROJECT FORMULATION - HYDROLOGY USER NOTES
THE USERS MANUAL FOR THIS PROGRAM IS THE MAY 1982 DRAFT OF TR-20. CHANGES FROM THE 2/14/74 VERSION INCLUDE:
REACH ROUTING - THE MODIFIED ATT-KI14 ROUTING PROCEDURE REPLACES THE CONVEX METHOD. INPUT DATA PREPARED FOR
PREVIOUS PROGRAM VERSIONS USING CONVEX ROUTING COEFFICIENTS WILL NOT RUN ON THIS VERSION.
THE PREFERRED TYPE OF DATA ENTRY IS CROSS SECTION DATA REPRESENTATIVE OF A REACH. IT IS RECOMMENDED THAT
THE OPTIONAL CROSS SECTION DISCHARGE-AREA PLOTS BE OBTAINED WHENEVER NEW CROSS SECTION DATA IS ENTERED.
THE PLOTS SHOULD BE CHECKED FOR REASONABLENESS AND ADEQUACY OF INPUT DATA FOR THE COMPUTATION OF "M"
VALUES USED IN THE ROUTING PROCEDURE.
GUIDELINES FOR DETERMINING OR ANALYZING REACH LENGTHS AND COEFFICIENTS (X,M) ARE AVAILABLE IN THE USERS
MANUAL. SUMMARY TABLE 2 DISPLAYS REACH ROUTING RESULTS AND ROUTING PARAMETERS FOR COMPARISON AND CHECKING.
HYDROGRAPH GENERATION - THE PROCEDURE TO CALCULATE THE INTERNAL TIME INCREMENT AND PEAK TIME OF THE UNIT
HYDROGRAPH HAVE BEEN IMPROVED. PEAK DISCHARGES AND TIMES MAY DIFFER FROM THE PREVIOUS VERSION. OUTPUT
HYDROGRAPHS ARE STILL INTERPOLATED, PRINTED, AND ROUTED AT THE USER SELECTED MAIN TIME INCREMENT.
INTERMEDIATE PEAKS - METHOD ADDED TO PROVIDE DISCHARGES AT INTERMEDIATE POINTS WITHIN REACHES WITHOUT ROUTING.
OTHER - THIS VERSION CONTAINS SOME ADDITIONS TO THE INPUT AND NUMEROUS MODIFICATIONS TO THE OUTPUT. USER
OPTIONS HAVE BEEN MODIFIED AND AUGMENTED ON THE JOB RECORD, RAINTABLES ADDED, ERROR AND WARNING MESSAGES
EXPANDED, AND THE SUMMARY TABLES COMPLETELY REVISED. THE HOLDOUT OPTION IS NOT OPERATIONAL AT THIS TIME.
PROGRAM QUESTIONS OR PROBLEMS SHOULD BE DIRECTED TO HYDRAULIC ENGINEERS AT THE SCS NATIONAL TECHNICAL CENTERS:
CHESTER, PA (NORTHEAST) - 215-499-3933, FORT WORTH, TX (SOUTH) -- 334-5242 (FTS)
LINCOLN, NB (MIDWEST) -- 541-5318 (FTS), PORTLAND, OR (WEST) -- 423-4099 (FTS)
OR HYDROLOGY UNIT, ENGINEERING DIVISION, LANHAM, MD -- 436-7383 (FTS).
PROGRAM CHANGES SINCE MAY 1982:
12/17/82 - CORRECT PEAK RATE FACTOR FOR USER ENTERED DIMHYD
CORRECT REACH ROUTING PEAK TRAVEL TIME PRINTED WITH FULLPRINT OPTION
5/02/83 - CORRECT COMPUTATIONS FOR ---
1. DIVISION OF BASEFLOW IN DIVERT OPERATION
2. HYDROGRAPH VOLUME SPLIT BETWEEN BASEFLOW AND ABOVE BASEFLOW
3. CROSS SECTION DATA PLOTTING POSITION
- 4. INTERMEDIATE PEAK WHEN "FROM" AREA IS LARGER THAN "THRU" AREA
5. STORAGE ROUTED REACH TRAVEL TIME FOR MULTIPEAK HYDROGRAPH
6. ORDERING "FLOW-FREQ" FILE FROM SUMMARY TABLE #3 DATA
7. BASEFLOW ENTERED WITH READHYD
8. LOW FLOW SPLIT DURING DIVERT PROCEDURE #2 WHEN SECTION RATINGS START AT DIFFERENT ELEVATIONS
ENHANCEMENTS ---
1. REPLACE USER MANUAL ERROR CODES (PAGE 4-9 TO 4-11) WITH MESSAGES
2. LABEL OUTPUT HYDROGRAPH FILES WITH CROSS SECTION/STRUCTURE, ALTERNATE AND STORM NO'S
09/01/83 - CORRECT INPUT AND OUTPUT ERRORS FOR INTERMEDIATE PEAKS
CORRECT COMBINATION OF RATING TABLES FOR DIVERT
CHECK REACH ROUTING PARAMETERS FOR ACCEPTABLE LIMITS
ELIMINATE MINIMUM REACH TRAVEL TIME WHEN ATT-KIN COEFFICIENT EQUALS ONE
n
i
L
n
L
r.
144-i
s

TR20 XEQ 6/24/99 GRANDOVER (WEST) COMMERCIAL- POST-DEV. W/PONDS 50 YR, 06/22/99 20 JOB 1 PASS 1
REV 09/01/83 30 PAGE 2
EXECUTIVE CONTROL OPERATION 1NCREM MAIN TIME INCREMENT = .08 HOURS
RECORD ID 460
-EXECUTIVE CONTROL OPERATION COMPUT FROM XSECTION 1 TO STRUCTURE 18 RECORD ID 470
STARTING TIME = .00 RAIN DEPTH = 6.70 RAIN DURATION= 1.00 RAIN TABLE NO.= 2 ANT. MOIST. COND= 2
ALTERNATE NO.= 1 STORM NO.= 1 MAIN TIME INCREMENT = .08 HOURS
PERATION RUNOFF CROSS SECTION 1
OUTPUT HYDROGRAPH= 1
AREA= .24 SQ MI INPUT RUNOFF CURVE= 90. TIME OF CONCENTRATION= .25 HOURS
INTERNAL HYDROGRAPH TIME INCREMENT= .0333 HOURS
RIME(HRS)
2.40
3.20
4.00
4.80
5.60
6.40
7.20
8.00
8.80
9.60
10.40
11.20
12.00
12.80
13.60
14.40
15.20
16.00
16.80
17.60
18.40
19.20
20.00
20.80
21.60
22.40
23.20
PEAK TIME(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET)
12.04 925.13 (RUNOFF)
16.44 24.25 (RUNOFF)
17.65 20.22 (RUNOFF)
19.64 16.20 (RUNOFF)
23.64 12.18 (RUNOFF)
FIR ST HYDROGRAPH POINT = .00 HOURS TIME INCR EMENT = .08 HOURS DRAINAGE AREA = .24 SQ.MI.
DISCHG .00 .00 .00 .00 .00 .00 .00 .01 .07 .17
DISCHG .29 .42 .55 .68 .81 .94 1.07 1.19 1.38 1.69
DISCHG 2.01 2.27 2.49 2.70 2.90 3.09 3.28 3.46 3.64 3.82
DISCHG 3.99 4.15 4.32 4.48 4.64 4.79 4.95 5.10 5.24 5.38
DISCHG 5.53 5.66 5.80 5.93 6.06 6.19 6.48 7.14 7.80 8.21
DISCHG 8.50 8.73 8.92 9.10 9.27 9.44 9.60 9.75 9.91 10.06
DISCHG 10.20 10.35 10.49 10.62 10.76 10.89 11.02 11.15 11.27 11.39
DISCHG 11.51 11.87 12.75 13.61 14.32 15.36 16.38 17.02 17.41 17.70
DISCHG 17.92 18.12 18.31 18.55 19.32 20.43 21.23 21.71 22.03 22.30
DISCHG 22.95 24.14 25.12 25.69 26.06 26.34 26.88 28.05 29.19 30.36
DISCHG 32.60 34.87 36.74 40.14 43.82 46.45 50.09 54.15 57.05 60.71
DISCHG 65.13 68.46 73.32 80.23 87.82 132.47 230.88 313.89 438.22 676.64
DISCHG 885.61 900.48 662.18 409.27 277.03 199.58 153.71 129.48 113.19 101.68
DISCHG 95.01 87.97 80.34 75.49 70.86 65.80 62.55 59.67 56.32 54.00
DISCHG 51.75 48.53 46.15 44.56 42.76 41.39 40.35 38.77 37.42 36.44
DISCHG 34.96 33.57 32.61 31.16 29.68 28.86 28.50 28.33 28.26 28.23
DISCHG 28.22 28.14 27.39 26.03 25.04 24.58 24.37 24.28 24.24 24.22
DISCHG 24.21 24.21 24.22 24.22 24.22 24.22 24.23 24.02 22.90 21.57
DISCHG 20.81 20.48 20.33 20.26 20.23 20.21 20.21 20.21 20.21 20.21
DISCHG 20.21 20.22 20.19 19.67 18.35 17.20 16.65 16.39 16.27 16.22
DISCHG 16.20 16.19 16.18 16.18 16.19 16.19 16.19 16.19 16.19 16.19
DISCHG 16.19 16.19 16.19 16.19 16.20 16.20 16.20 16.17 15.65 14.33
DISCHG 13.17 12.62 12.36 12.25 12.19 12.17 12.16 12.15 12.15 12.16
DISCHG 12.16 12.16 12.16 12.16 12.16 12.16 12.16 12.16 12.16 12.16
DISCHG 12.16 12.16 12.16 12.16 12.16 12.16 12.16 12.16 12.16 12.17
DISCHG 12.17 12.17 12.17 12.17 12.17 12.17 12.17 12.17 12.17 12.17
DISCHG 12.17 12.17 12.17 12.17 12.17 12.17 12.17 12.15 11.63 10.30

TR20 XEa 6/24/99 GRANDOVER (WEST) COMMERCIAL- POST-DEV. W/PONDS 50 YR, 06/22/99 20 JOB 1 PASS 1
REV 09/01/83 30 PAGE 3
RUNOFF VOLUME ABOVE BASEFLOW = 5.51 WA TERSHED INCHES, 853.33 CFS-HRS, 70 .52 ACRE- FEET; BASEFLOW = .00 CFS
PERATION RESVOR STRUCTURE 16
INPUT HY DROGRAPH= 1 OUTPUT HYDROGR APH= 2
SURFACE ELEVATION= 795.50
PEAK TIM E(HRS) PEAK DISCH ARGE(CFS) PEAK ELEVATION(FEET)
12.14 750. 47 800.47
IME(HRS) F IRST HYDROGRAPH POINT = .00 HOURS TIME INCRE MENT = .08 HOURS DRAINAGE AREA = .24 SO.MI.
3.20 DISCHG .00 .00 .00 .00 .00 .00 .01 .01 .01 .01
3.20 ELEV 795.50 795.50 795.50 795.50 795.50 795.50 795.51 795.51 795.52 795.52
4.00 DISCHG .01 .02 .02 .02 .03 .03 .04 .04 .05 .05
4.00 ELEV 795.52 795.53 795.53 795.54 795.55 795.55 795.56 795.57 795.58 795.58
4.80 DISCHG .06 .06 .07 .07 .08 .09 .09 .10 .11 .11
4.80 ELEV 795.59 795.60 795.61 795.62 795.63 795.64 795.65 795.66 795.68 795.69
5.60 DISCHG .12 .13 .14 .14 .15 .16 .17 .18 .19 .20
5.60 ELEV 795.70 795.71 795.73 795.74 795.75 795.77 795.78 795.80 795.81 795.83
6.40 DISCHG .21 .22 .23 .25 .26 .27 .28 .30 .30 .31
6.40 ELEV 795.85 795.87 795.89 795.91 795.93 795.95 795.97 795.99 796.01 796.04
7.20 DISCHG .31 .32 .32 .33 .33 .34 .34 .35 .35 .36
7.20 ELEV 796.06 796.08 796.10 796.13 796.15 796.17 796.20 796.22 796.24 796.27
8.00 DISCHG .36 .37 .37 .38 .38 .39 .40 .41 .41 .42
8.00 ELEV 796.29 796.32 796.34 796.37 796.40 796.44 796.47 796.51 796.54 796.58
8.80 DISCHG .43 .44 .45 .45 .46 .47 .48 .49 .50 .51
8.80 ELEV 796.62 796.66 796.70 796.74 796.78 796.82 796.87 796.92 796
96 797
01
9.60 DISCHG .52 1.48 5.02 8.13 10.83 13.18 15.22 17.09 .
18.85 .
20.52
9.60 ELEV 797.06 797.11 797.16 797.20 797.24 797.27 797.29 797.32 797.34 797.36
10.40 DISCHG 22.19 23.95 25.76 27.69 29.87 33.14 37.19 41.18 45.04 48.74
10.40 ELEV 797.38 797.41 797.43 797.46 797.49 797.52 797.54 797.57 797.60 797.62
11.20 DISCHG 52.53 56.35 60.24 64.66 69.84 80.62 108.83 163.93 240.57 369.23
11.20 ELEV 797.65 797.68 797.70 797.73 797.77 797.84 798.03 798.32 798.68 799.19
12.00 DISCHG 549.71 712.42 746.09 643.31 506.65 389.07 298.29 237.88 193.78 164.69
12.00 ELEV 799.84 800.36 800.46 800.15 799.69 799.27 798.93 798.67 798.47 798.32
12.80 DISCHG 142.34 125.21 111.38 100.73 93.36 86.66 80.65 75.42 70.76 66.59
12.80 ELEV 798.20 798.11 798.04 797.98 797.93 797.89 797.84 797.81 797.78 797.75
13.60 DISCHG 62.92 59.50 56.25 53.33 50.75 48.43 46.40 44.57 42.84 41.26
13.60 ELEV 797.72 797.70 797.68 797.66 797.64 797.62 797.61 797.59 797.58 797.57
14.40 DISCHG 39.77 38.30 36.90 35.56 34.19 32.87 31.75 30.90 30.50 30.16
14.40 ELEV 797.56 797.55 797.54 797.53 797.52 797.51 797.51 797.50 797.49 797.49
15.20 DISCHG 29.86 29.61 29.33 28.93 28.41 27.86 27.34 26.88 26.48 26.14
15.20 ELEV 797.49 797.48 797.48 797.47 797.47 797.46 797.45 797.45 797.44 797.44
16.00 DISCHG 25.85 25.60 25.39 25.21 25.06 24.93 24.82 24.72 24.52 24.18
16.00 ELEV 797.43 797.43 797.43 797.42 797.42 797.42 797.42 797.42 797.42 797.41
16.80 DISCHG 23.72 23.25 22.82 22.43 22.10 21.81 21.57 21.36 21.18 21.04
16.80 ELEV 797.40 797.40 797.39 797.39 797.38 797.38 797.38 797.37 797.37 797.37
17.60 DISCHG 20.91 20.80 20.71 20.59 20.35 19.96 19.50 19.04 18.63 18.26
17.60 ELEV 797.37 797.37 797.37 797.36 797.36 797.36 797.35 797.34 797.34 797.33

1
TR20 XEQ 6/24/99 GRANDOVER (WEST) COMMERCIAL- POST-DEV. W/PONDS 50 YR, 06/22/99 20 JOB 1 PASS 1
REV 09/01/83 30 PAGE 4
18.40
18.40 DISCHG
ELEV 17.95
797.33 17.68
797.33 17.45
797.32 17.26
797.32 17.10
797.32 16.96
797.32 16.84
797.31 16.74
797.31 16.66
797.31 16.59
797.31
19.20 DISCHG 16.53 16.47 16.43 16.40 16.36 16.34 16.32 16.30 16.24 16.05
19.20 ELEV 797.31 797.31 797.31 797.31 797.31 797.31 797.31 797.31 797.31 797.30
20.00 DISCHG 15.70 15.27 14.85 14.46 14.12 13.82 13.57 13.35 13.17 13.02
20.00 ELEV 797.30 797.29 797.29 797.28 797.28 797.27 797.27 797.27 797.27 797.26
20.80 DISCHG 12.88 12.77 12.68 12.60 12.53 12.48 12.43 12.39 12.35 12.32
20.80 ELEV 797.26 797.26 797.26 797.26 797.26 797.26 797.26 797.26 797.26 797.26
21.60 DISCHG 12.30 12.28 12.26 12.24 12.23 12.22 12.21 12.21 12.20 12.19
21.60 ELEV 797.25 797.25 797.25 797.25 797.25 797.25 797.25 797.25 797.25 797.25
22.40
22.40 DISCHG
ELEV 12.19
797.25 12.19
797.25 12.18
797.25 12.18
797.25 12.18
797.25 12.18
797.25 12.18
797.25 12.17
797.25 12.17
797.25 12.17
797.25
23.20 DISCHG 12.17 12.17 12.17 12.17 12.17 12.17 12.17 12.17 12.13 11.95
23.20 ELEV 797.25 797.25 797.25 797.25 797.25 797.25 797.25 797.25 797.25 797.25

RUNOFF VOLUME ABOVE BASEFLOW = 5.11 WA TERSHED INCHES, 790.83 CFS -HRS, 65 .35 ACRE-FEET; BASEFLOW = .00 CFS
PERATION REACH CROSS SECTION 3
INPUT HYDROGRAPH= 2 OUTPUT HYDROGRAPH= 3
LENGTH = 1350.00 FEET INPUT = COEFFICIENTS RELATED TO CROSS SECTIONAL AREA, X= 1.60, M= 1.45
MODIFIED ATT-KIN ROUTING COEFFICIENT = 1.00 PEAK TRAVEL TIME = .00 HOURS
*** WARNING REACH 3 ATT-KIN COEFF.(C) GREATER THAN 0.667, CONSIDER REDUCING MAIN TIME INCREMENT ***
PEAK TIME(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET)
12.14 750.47 (NULL)
R IMEORS) FIR ST HYDROGRAPH POINT = .00 HOU RS TIME INCREMENT = .08 HOURS DRAINAGE AREA = .24 SQ.MI.
3.20 DISCHG .00 .00 .00 .00 .00 .00 .01 .01 .01 .01
4.00 DISCHG .01 .02 .02 .02 .03 .03 .04 .04 .05 .05
4.80 DISCHG .06 .06 .07 .07 .08 .09 .09 .10 .11 .11
5.60 DISCHG .12 .13 .14 .14 .15 .16 .17 .18 .19 .20
6.40 DISCHG .21 .22 .23 .25 .26 .27 .28 .30 .30 .31
7.20 DISCHG .31 .32 .32 .33 .33 .34 .34 .35 .35 .36
8.00 DISCHG .36 .37 .37 .38 .38 .39 .40 .41 .41 .42
8.80
9.60 DISCHG
DISCHG .43
.52 .44
1.48 .45
5.02 .45
8.13 .46
10.83 .47
13.18 .48
15.22 .49
17.09 .50
18.85 .51
20.52
10.40 DISCHG 22.19 23.95 25.76 27.69 29.87 33.14 37.19 41.18 45.04 48.74
11.20 DISCHG 52.53 56.35 60.24 64.66 69.84 80.62 108.83 163.93 240.57 369.23
12.00 DISCHG 549.71 712.42 746.09 643.31 506.65 389.07 298.29 237.88 193.78 164.69
12.80 DISCHG 142.34 125.21 111.38 100.73 93.36 86.66 80.65 75.42 70.76 66.59
13.60 DISCHG 62.92 59.50 56.25 53.33 50.75 48.43 46.40 44.57 42.84 41.26
14.40 DISCHG 39.77 38.30 36.90 35.56 34.19 32.87 31.75 30.90 30.50 30.16
15.20 DISCHG 29.86 29.61 29.33 28.93 28.41 27.86 27.34 26.88 26.48 26.14
16.00 DISCHG 25.85 25.60 25.39 25.21 25.06 24.93 24.82 24.72 24.52 24.18
16.80
17.60 DISCHG
DISCHG 23.72
20.91 23.25
20.80 22.82
20.71 22.43
20.59 22.10
20.35 21.81
19.96 21.57
19.50 21.36
19.04 21.18
18.63 21.04
18.26
18.40 DISCHG 17.95 17.68 17.45 17.26 17.10 16.96 16.84 16.74 16.66 16.59
19.20 DISCHG 16.53 16.47 16.43 16.40 16.36 16.34 16.32 16.30 16.24 16.05

I
TR20 XEO 6/24/99
REV 09/01/83
20.00 DISCHG 15.70 15.27 14.85 14.46
20.80 DISCHG 12.88 12.77 12.68 12.60
21.60 DISCHG 12.30 12.28 12.26 12.24
22.40 DISCHG 12.19 12.19 12.18 12.18
23.20 DISCHG 12.17 12.17 12.17 12.17
RUNOFF VOLUME ABOVE BASEFLOW = 5.11 WATERSHED INCHES,
GRANDOVER (WEST) COMMERCIAL- POST-DEV. W/PONDS 50 YR, 06/22/99
20 JOB 1 PASS 1
30 PAGE 5
14.12 13.82 13.57 13.35 13.17 13.02
12.53 12.48 12.43 12.39 12.35 12.32
12.23 12.22 12.21 12.21 12.20 12.19
12.18 12.18 12.18 12.17 12.17 12.17
12.17 12.17 12.17 12.17 12.13 11.95
790.83 CFS-HRS, 65.35 ACRE-FEET; BASEFLOW = .00 CFS
OPERATION RUNOFF CROSS SECTION 4
OUTPUT HYDROGRAPH= 4
AREA= .03 SO MI INPUT RUNOFF CURVE= 90. TIME OF CONCENTRATION= .23 HOURS
INTERNAL HYDROGRAPH TIME INCREMENT= .0307 HOURS
PEAK TIME(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET)
12.03 97.75 (RUNOFF)
TIME(HRS) FIRST HYDROGRAPH POINT = .00 HOURS TIME INCREMENT = .08 HOURS DRAINAGE AREA = .03 SO.MI.
2.40 DISCHG .00 .00 .00 .00 .00 .00 .00 .00 .01 .02
3.20 DISCHG .03 .05 .06 .07 .09 .10 .11 .13 .15 .18
4.00 DISCHG .22 .24 .26 .29 .31 .33 .35 .36 .38 .40
4.80 DISCHG .42 .44 .45 .47 .49 .50 .52 .53 .55 .56
5.60 DISCHG .58 .59 .61 .62 .63 .65 .68 .76 .82 .86
6.40 DISCHG .89 .91 .93 .95 .97 .99 1.00 1.02 1.04 1.05
7.20 DISCHG 1.07 1.08 1.10 1.11 1.12 1.14 1.15 1.16 1.18 1.19
8.00 DISCHG 1.20 1.24 1.35 1.43 1.50 1.62 1.73 1.79 1.82 1.85
8.80 DISCHG 1.87 1.89 1.91 1.94 2.03 2.15 2.23 2.27 2.30 2.33
9.60 DISCHG 2.41 2.54 2.63 2.69 2.72 2.75 2.81 2.95 3.06 3.18
10.40 DISCHG 3.44 3.68 3.87 4.25 4.63 4.89 5.30 5.72 6.00 6.41
11.20 DISCHG 6.87 7.19 7.74 8.50 9.27 14.91 26.00 34.10 48.05 75.40
12.00 DISCHG 95.74 94.18 64.71 38.54 26.32 19.10 14.86 12.82 11.34 10.31
12.80 DISCHG 9.78 9.01 8.21 7.77 7.28 6.75 6.46 6.15 5.79 5.58
13.60 DISCHG 5.33 4.99 4.76 4.61 4.41 4.28 4.18 4.01 3.87 3.78
14.40 DISCHG 3.61 3.47 3.38 3.21 3.06 2.99 2.96 2.95 2.94 2.94
15.20 DISCHG 2.94 2.93 2.84 2.68 2.59 2.55 2.53 2.53 2.52 2.52
16.00 DISCHG 2.52 2.52 2.52 2.52 2.52 2.52 2.52 2.50 2.36 2.22
16.80 DISCHG 2.15 2.13 2.11 2.11 2.11 2.10 2.10 2.11 2.11 2.11
17.60 DISCHG 2.11 2.11 2.10 2.04 1.89 1.77 1.72 1.70 1.69 1.69
18.40 DISCHG 1.69 1.69 1.69 1.69 1.69 1.69 1.69 1.69 1.69 1.69
19.20 DISCHG 1.69 1.69 1.69 1.69 1.69 1.69 1.69 1.69 1.62 1.47
20.00 DISCHG 1.35 1.30 1.28 1.27 1.27 1.27 1.27 1.27 1.27 1.27
20.80 DISCHG 1.27 1.27 1.27 1.27 1.27 1.27 1.27 1.27 1.27 1.27
21.60 DISCHG 1.27 1.27 1.27 1.27 1.27 1.27 1.27 1.27 1.27 1.27
22.40 DISCHG 1.27 1.27 1.27 1.27 1.27 1.27 1.27 1.27 1.27 1.27
23.20 DISCHG 1.27 1.27 1.27 1.27 1.27 1.27 1.27 1.27 1.20 1.05
RUNOFF VOLUME ABOVE BASEFLOW = 5.51 WATERSHED INCH ES, 88.96 CFS-HRS , 7.35 ACRE-FEET; BASE FLOW = :00 CFS
1PERATION RESVOR STRUCTURE 17

TR20 XEQ 6/24/99 GRANDOVER (WEST) COM MERCIAL- POST-DEV. W/PONDS 50 YR, 06/22 /99 20 JOB 1 PASS 1
REV 09/01/83 30 PAGE 6
INPUT HY DROGRAPH= 4 OUTPUT HYDROGRAP H= 5
SURFACE ELEVATION= 814.00
PEAK TIM
12.13 E(HRS) PEAK DISCHARGE(IFS)
79
42 PEAK ELEVATION(FEET)
817
57
. .
TIME(HRS) F IRST HYDROGRAPH POINT = .00 HOURS TIME INCREMENT = .08 HOURS DRAINAGE AREA = .03 SQ.MI.
4.00 DISCHG .00 .00 .00 .01 .01 .01 .01 .01 .01 .01
4.00 ELEV 814.00 814.00 814.00 814.02 814.03 814.03 814.04 814.04 814.05 814.05
4.80 DISCHG .01 .01 .02 .02 .02 .02 .02 .02 .03 .03
4.80 ELEV 814.06 814.06 814.07 814.07 814.08 814.08 814.09 814.10 814.10 814.11
5.60 DISCHG .03 .03 .03 .03 .04 .04 .04 .04 .04 .05
5.60 ELEV 814.12 814.13 814.13 814.14 814.15 814.16 814.16 814.17 814.18 814.19
6.40 DISCHG 05 .05 .05 .06 .06 .06 .07 07 07 07
6.40 ELEV 814.20 814.22 814.23 814.24 814.25 814.26 814.27 .
814.29 .
814.30 .
814.31
7.20 DISCHG .08 .08 .08 .09 .09 .09 .10 .10 .10 .11
7.20 ELEV 814.33 814.34 814.35 814.36 814.38 814.39 814.41 814.42 814.43 814.45
8.00 DISCHG .11 .11 .12 .12 .13 .13 .14 .14 .15 .15
8.00 ELEV 814.46 814.48 814.49 814.51 814.53 814.54 814.56 814.59 814.61 814.63
8.80 DISCHG .16 .16 .17 .17 .18 .18 .19 .20 .20 .21
8.80 ELEV 814.65 814.67 814.70 814.72 814.74 814.77 814.80 814.82 814.85 814.88
9.60 DISCHG .22 .22 .23 .24 .24 .25 .25 .25 .26 .26
9.60 ELEV 814.91 814.93 814.97 815.00 815.03 815.06 815.09 815.12 815.15 815.19
10.40 DISCHG .26 .27 .27 .28 .28 .29 .29 .30 .31 .66
10.40 ELEV 815.23 815.27 815.31 815.36 815.41 815.46 815.52 815.58 815.65 815.72
11.20 DISCHG 1.72 2.65 3.50 4.32 5.12 7.23 11.43 17.35 25.71 40.22
11.20 ELEV 815.79 815.84 815.89 815.94 815.99 816.06 816.19 816.36 816.58 816.90
12.00 DISCHG 60.93 77.10 78.22 65.58 49.83 38.15 29.62 23.26 19.41 16.68
12.00 ELEV 817.27 817.53 817.55 817.34 817.08 816.85 816.67 816.53 816.43 816.34
12.80 DISCHG 14.57 12.92 11.55 10.42 9.50 8.71 8.04 7.49 7.01 6.59
12.80
13.60 ELEV
DISCHG 816.28
6.23 816.23
5.89 816.19
5.57 816.16
5.29 816.13
5.14 816.10
5.00 816.08
4.86 816.07
4.73 816.05
4.59 816.04
4.45
13.60 ELEV 816.03 816.02 816.01 816.00 815.99 815.98 815.98 815.97 815.96 815.95
14.40 DISCHG 4.32 4.18 4.05 3.91 3.78 3.64 3.53 3.43 3.34 3.27
14.40 ELEV 815.94 815.93 815.93 815.92 815.91 815.90 815.89 815.89 815.88 815.88
15.20 DISCHG 3.21 3.16 3.11 3.05 2.98 2.91 2.84 2.79 2.74 2.70
15.20 ELEV 815.88 815.87 815.87 815.87 815.86 815.86 815.85 815.85 815.85 815.84
16.00 DISCHG 2.67 2.64 2.62 2.61 2.59 2.58 2.57 2.56 2.54 2.49
16.00 ELEV 815.84 815.84 815.84 815.84 815.84 815.84 815.84 815.84 815.83 815.83
16.80 DISCHG 2.44 2.39 2.34 2.30 2.26 2.24 2.21 2.19 2.18 2.17
16.80 ELEV 815.83 815.83 815.82 815.82 815.82 815.82 815.82 815
81 815
81 815
81
17.60 DISCHG 2.16 2.15 2.14 2.13 2.10 2.05 2.00 .
1.95 .
1.90 .
1.86
17.60 ELEV 815.81 815.81 815.81 815.81 815.81 815.81 815.80 815.80 815.80 815.79
18.40 DISCHG 1.83 1.81 1.79 1.77 1.75 1.74 1.73 1.72 1.72 1.71
18.40 ELEV 815.79 815.79 815.79 815.79 815.79 815.79 815.79 815.79 815.79 815.78
19.20 DISCHG 1.71 1.70 1.70 1.70 1.70 1.69 1.69 1.69 1.69 1.66
19.20 ELEV 815.78 815.78 815.78 815.78 815.78 815.78 815.78 815.78 815.78 615.78
20.00 DISCHG 1.62 1.56 1.52 1.47 1.44 1.41 1.38 1.36 1.35 1.33
20.00 ELEV 815.78 815.78 815.77 815.77 815.77 815.77 815.77 815.76 815.76 815.76
20.80 DISCHG 1.32 1.31 1.30 1.30 1.29 1.29 1.28 1.28 1.28 1.28

I
TR20 XEQ 6/24/99
1 REV 09/01/83
20.80 ELEV 815.76 815.76 815.76 815.76
21.60 DISCHG 1.27 1.27 1.27 1.27
21.60 ELEV 815.76 815.76 815.76 815.76
22.40
22.40 DISCHG
ELEV 1.27
815.76 1.27
815.76 1.27
815.76 1.27
815.76
23.20 DISCHG 1.27 1.27 1.27 1.27
23.20 ELEV 815.76 815.76 815.76 815.76

RUNOFF VOLUME ABOVE BASEFLOW = 4.82 WA TERSHED INCHES,
GRANDOVER (WEST) COMMERCIAL- POST-DEV. W/PONDS 50 YR, 06/22/99
20 JOB 1 PASS 1
30 PAGE 7
815.76 815.76 815.76 815.76 815.76 815.76
1.27 1.27 1.27 1.27 1.27 1.27
815.76 815.76 815.76 815.76 815.76 815.76
1.27 1.27 1.27 1.27 1.27 1.27
815.76 815.76 815.76 815.76 815.76 815.76
1.27 1.27 1.27 1.27 1.26 1.24
815.76 815.76 815.76 815.76 815.76 815.76
77.81 CFS-HRS, 6.43 ACRE-FEET; BASEFLOW = .00 CFS
'OPERATION REACH CROSS SECTION 6
INPUT HYDROGRAPH= 5 OUTPUT HYDROGRAPH= 6
® LENGTH = 800.00 FEET INPUT = COEFFICIENTS RELATED TO CROSS SECTIONAL AREA, X= 1.60, M= 1.44
MODIFIED ATT-KIN ROUTING COEFFICIENT = 1.00 PEAK TRAVEL TIME = .00 HOURS
*** WARNING REACH 6 ATT-KIN COEFF.(C) GREATER THAN 0.667, CONSIDER REDUCING MAIN TIME INCREMENT ***
PEAK TIME(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET)
12.13 79.42 (NULL)
IME(HRS) FIRST HYDROGRAPH POINT = .00 HOURS TIME INCREMENT = .08 HOURS DRAINAGE AREA = .03 SQ.MI.
4.00 DISCHG .00 .00 .00 .01 .01 .01 .01 .01 .01 01
4.80 DISCHG .01 .01 .02 .02 .02 .02 .02 .02 .03 .
.03
5.60 DISCHG .03 .03 .03 .03 .04 .04 .04 .04 .04 .05
6.40 DISCHG .05 .05 .05 .06 .06 .06 .07 .07 .07 .07
7.20 DISCHG .08 .08 .08 .09 .09 .09 .10 .10 .10 .11
8.00 DISCHG .11 .11 .12 .12 .13 .13 .14 .14 .15 .15
8.80 DISCHG .16 .16 .17 .17 .18 .18 .19 .20 .20 .21
9.60
10.40 DISCHG
DISCHG 22
.26 .22
.27 .23
.27 .24
.28 .24
.28 .25
.29 .25
.29 .25
.30 .26
.31 .26
.66
11.20 DISCHG 1.72 2.65 3.50 4.32 5.12 7.23 11.43 17.35 25.71 40.22
12.00 DISCHG 60.93 77.10 78.22 65.58 49.83 38.15 29.62 23.26 19.41 16.68
12.80 DISCHG 14.57 12.92 11.55 10.42 9.50 8.71 8.04 7.49 7.01 6.59
13.60 DISCHG 6.23 5.89 5.57 5.29 5.14 5.00 4.86 4.73 4.59 4.45
14.40 DISCHG 4.32 4.18 4.05 3.91 3.78 3.64 3.53 3.43 3.34 3.27
15.20 DISCHG 3.21 3.16 3.11 3.05 2.98 2.91 2.84 2.79 2.74 2.70
16.00 DISCHG 2.67 2.64 2.62 2.61 2.59 2.58 2.57 2.56 2.54 2.49
16.80 DISCHG 2.44 2.39 2.34 2.30 2.26 2.24 2.21 2.19 2.18 2.17
17.60
18.40 DISCHG
DISCHG 2.16
1.83 2.15
1.81 2.14
1.79 2.13
1.77 2.10
1.75 2.05
1.74 2.00
1.73 1.95
1.72 1.90
1.72 1.86
1.71
19.20 DISCHG 1.71 1.70 1.70 1.70 1.70 1.69 1.69 1.69 1.69 1.66
20.00 DISCHG 1.62 1.56 1.52 1.47 1.44 1.41 1.38 1.36 1.35 1.33
20.80 DISCHG 1.32 1.31 1.30 1.30 1.29 1.29 1.28 1.28 1.28 1.28
21.60 DISCHG 1.27 1.27 1.27 1.27 1.27 1.27 1.27 1.27 1.27 1.27
22.40 DISCHG 1.27 1.27 1.27 1.27 1.27 1.27 1.27 1.27 1.27 • 1.27
23.20 DISCHG 1.27 1.27 1.27 1.27 1.27 1.27 1.27 1.27 1.26 1.24
RUNOFF VOLUME ABOVE BASEFLOW = 4.82 WATER SHED INCHES, 77.81 CFS-HRS , 6.43 ACRE-FEET; BASE FLOW = .00 CFS

I
TR20 XEQ
6/24/99
GRANDOVER (WEST) COMMERCIAL- POST-DEV. W/PONDS 50 YR, 06/22/99 20
JOB 1 PASS
1
REV 09/01/83 30 PAGE 8
OPERATION RUNOFF CROSS SECTION 7
OUTPUT HYDROGRAPH= 7
AREA= .03 SO MI INPUT RUNOFF CURVE= 85. TIME OF CONCENTRATION= .17 HOURS
INTERNAL HYDROGRAPH TIME INCREMENT= .0227 HOURS
PEAK TIME(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET)
12.00 117.69 (RUNOFF)
TIME(HRS)
4.00 FIR
DISCHG ST HYDROGR
.00 APH POINT =
.00 .00 HOURS
.00 .00 TIME INCREMENT = .08
.00 .00 HOURS
.02 DRAINAGE
.03 AREA =
.05 .03 SQ.MI.
.07
4.80 DISCHG .09 .11 .13 .15 .16 .18 .20 .22 .23 .25
5.60 DISCHG .27 .28 .30 .31 .33 .35 .38 .45 .49 .51
6.40 DISCHG .54 .56 .58 .60 .63 .65 .67 .69 .71 .73
7.20 DISCHG .74 .76 .78 .80 .82 .84 .85 .87 .89 .90
8.00 DISCHG .92 .98 1.09 1.15 1.22 1.35 1.42 1.47 1.50 1.53
8.80 DISCHG 1.55 1.58 1.61 1.64 1.77 1.89 1.94 1.98 2.02 2.05
9.60 DISCHG 2.17 2.31 2.39 2.43 2.47 2.50 2.60 2.77 2.86 3.02
10.40 DISCHG 3.36 3.54 3.75 4.27 4.59 4.82 5.37 5.76 6.00 6.56
11.20 DISCHG 7.03 7.31 8.15 8.97 9.87 20.31 33.56 39.91 64
18 100
93
12.00 DISCHG 117.69 100.01 51.79 30.45 22.53 16.77 14.34 13.31 .
12.01 .
11.32
12.80 DISCHG 10.90 9.75 9.00 8.68 7.99 7.47 7.27 6.85 6.46 6.32
13.60 DISCHG 5.95 5.54 5.39 5.20 4.97 4.88 4.75 4.51 4.41 4.29
14.40 DISCHG 4.05 3.94 3.84 3.60 3.46 3.42 3.41 3.41 3.41 3.41
15.20 DISCHG 3.41 3.39 3.20 3.02 2.95 2.93 2.93 2.93 2.93 2.93
16.00 DISCHG 2.93 2.93 2.93 2.93 2.93 2.93 2.93 2.87 2.64 2.50
16.80
17.60 DISCHG
DISCHG 2.46
2.45 2.45
2.45 2.45
2.45 2.45
2.31 2.45
2.09 2.45
2.00 2.45
1.97 2.45
1.97 2.45
1.96 2.45
1.96
18.40 DISCHG 1.96 1.96 1.96 1.96 1.96 1.96 1.96 1.96 1.96 1.96
19.20 DISCHG 1.96 1.97 1.97 1.97 1.97 1.97 1.97 1.96 1.82 1.60
20.00 DISCHG 1.51 1.49 1.48 1.48 1.48 1.48 1.48 1.48 1.48 1.48
20.80 DISCHG 1.48 1.48 1.48 1.48 1.48 1.48 1.48 1.48 1.48 1.48
21.60 DISCHG 1.48 1.48 1.48 1.48 1.48 1.48 1.48 1.48 1.48 1.48
22.40 DISCHG 1.48 1.48 1.48 1.48 1.48 1.48 1.48 1.48 1.48 1.48
23.20 DISCHG 1.48 1.48 1.48 1.48 1.48 1.48 1.48 1.48 1.33 1.11
g RUNOFF VOLUME ABOVE BASEFLOW = 4.96 WATERSHED INCHES, 96.02 CIS-HRS, 7.94 ACRE-FEET; BASEFLOW = .00 CFS
OPERATION ADDHYD CROSS SECTION 8
INPUT HYDROGRAPHS= 7,6 OUTPUT HYDROGRAPH= 5
12"ELEVATION OUTPUT OPTION REQUESTED BUT NO ELEVATIONS GIVEN'
PEAK TIME(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET)
12.04 182.77 (NULL)
?IME(HRS) FIRST HYDROGRAPH POINT = .00 HOURS TIME INCREMENT = .08 HOURS DRAINAGE AREA = .05 SQ.MI.
4.00 DISCHG .00 .00 .00 .01 .01 .01 .03 .04 .06 .08

I
TR20 XEQ 6/24/99
REV 09/01/83
4.80 DISCHG .10 .12 .14 .16
5.60 DISCHG .29 .31 .33 .35
6.40 DISCHG .59 .61 .64 .66
7.20 DISCHG .82 .84 .87 .89
8.00 DISCHG 1.03 1.10 1.21 1.27
8.80 DISCHG 1.71 1.74 1.77 1.82
9.60 DISCHG 2.39 2.54 2.62 2.67
10.40 DISCHG 3.62 3.81 4.02 4.54
11.20 DISCHG 8.74 9.96 11.65 13.29
12.00 DISCHG 178.62 177.11 130.01 96.03
12.80 DISCHG 25.47 22.67 20.55 19.10
13.60 DISCHG 12.18 11.42 10.95 10.49
14.40 DISCHG 8.37 8.12 7.89 7.51
15.20 DISCHG 6.62 6.56 6.32 6.07
16.00 DISCHG 5.60 5.57 5.55 5.54
16.80 DISCHG 4.90 4.84 4.79 4.75
17.60 DISCHG 4.60 4.60 4.59 4.43
18.40 DISCHG 3.80 3.77 3.75 3.73
19.20 DISCHG 3.67 3.67 3.67 3.66
20.00 DISCHG 3.13 3.05 3.00 2.95
20.80 DISCHG 2.80 2.79 2.78 2.77
21.60 DISCHG 2.75 2.75 2.75 2.75
22.40 DISCHG 2.75 2.75 2.75 2.75
23.20 DISCHG 2.75 2.75 2.75 2.75
RUNOFF VOLUME ABOVE BASEFLOW = 4.90 WATERSHED INCHES,
GRANDOVER (WEST) COMMERCIAL- POST-DEV. W/PONDS 50 YR, 06/22/99
20 JOB 1 PASS 1
30 PAGE 9
.18 .20 .22 .24 .26 .28
.37 .38 .42 .49 .53 .56
.69 .71 .73 .76 .78 .80
.91 .93 .95 .97 .99 1.01
1.35 1.48 1.56 1.61 1.64 1.68
1.95 2.07 2.13 2.18 2.22 2.26
2.71 2.75 2.85 3.02 3.12 3.28
4.87 5.11 5.66 6.06 6.30 7.22
15.00 27.54 44.99 57.26 89.90 141.15
72.36 54.92 43.96 36.57 31.42 28.00
17.49 16.18 15.31 14.34 13.47 12.91
10.11 9.88 9.61 9.24 9.00 8.75
7.24 7.07 6.94 6.83 6.75 6.68
5.93 5.84 5.77 5.71 5.67 5.63
5.52 5.51 5.50 5.43 5.17 5.00
4.71 4.68 4.66 4.64 4.63 4.61
4.18 4.05 3.97 3.91 3.86 3.83
3.72 3.71 3.70 3.69 3.68 3.68
3.66 3.66 3.66 3.65 3.51 3.26
2.91 2.88 2.86 2.84 2.82 2.81
2.77 2.76 2.76 2.76 2.76 2.75
2.75 2.75 2.75 2.75 2.75 2.75
2.75 2.75 2.75 2.75 2.75 2.75
2.75 2.75 2.75 2.74 2.60 2.35
173.83 CFS-HRS, 14.37 ACRE-FEET; BASEFLOW = .00 CFS
PERATION RESVOR STRUCTURE 1
INPUT HYDROGRAPH= 5 OUTPUT HYDROGRAPH= 4
SURFACE ELEVATION= 798.50
PEAK TIME(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET)
12.23 102.78 801.21
NIME(HRS) FIRST HYDROGRAPH POINT = .00 HOURS TIME INCREMENT = .08 HOURS DRAINAGE AREA = .05 SQ.MI.
5.60 DISCHG .00 .00 .00 .00 .00 .00 .00 .00 .01 .01
5.60 ELEV 798.50 798.50 798.50 798.50 798.50 798.50 798.50 798.50 798.53 798.53
6.40 DISCHG .01 .01 .01 .01 .01 .01 .01 .01 .01 .01
6.40 ELEV 798.53 798.53 798.54 798.54 798.54 798.55 798.55 798.55 798.56 798.56
7.20 DISCHG .01 .01 .01 .02 .02 .02 .02 .02 .02 .02
7.20 ELEV 798.56 798.57 798.57 798.58 798.58 798.58 798.59 798.59 798.60 798.60
8.00 DISCHG .02 .02 .02 .02 .03 .03 .03 .03 .03 .03
8.00 ELEV 798.61 798.61 798.62 798.62 798.63 798.64 798.64 798.65 798.66 798.66
8.80 DISCHG .03 .04 .04 .04 .04 .04 .04 .05 .05 .05
8.80 ELEV 798.67 798.68 798.69 798.70 798.71 798.71 798.72 798.73 798.74 798.76
9.60 DISCHG .05 .06 .06 .06 .06 .07 .07 .07 .07 .08
9.60 ELEV 798.77 798.78 798.79 798.80 798.81 798.83 798.84 798.85 798.87 798.88
10.40 DISCHG .08 .08 .09 .09 .09 .10 .12 .15 .18 .21
10.40 ELEV 798.90 798.91 798.93 798.95 798.97 799.00 799.02 799.04 799.07 799.09
1
TR20 XEO 6/24/99
1 REV 09/01/83
GRANDOVER (WEST) COMMERCIAL- POST-DEV. W/PONDS 50 YR, 06/22/99
11.20 DISCHG .24 .28 .33 .39
1 11.20 ELEV 799.12 799.16 799.20 799.25
12.00 DISCHG 56.68 83.63 99.69 102.75
12.00 ELEV 800.64 800.99 801.17 801.21
12.80 DISCHG 49.53 44.36 40.38 36.78
12.80 ELEV 800.54 800.47 800.40 800.34
13.60 DISCHG 20.19 18.72 17.40 16.43
13.60 ELEV 800.06 800.03 800.01 799.99
14.40 DISCHG 12.21 11.74 11.29 10.86
14.40 ELEV 799.86 799.84 799.83 799.81
15.20 DISCHG 8.51 8.28 8.06 7
83
15.20 ELEV 799.74 799.73 799.73 .
799.72
16.00 DISCHG 6.60 6.48 6.37 6.27
16.00 ELEV 799.68 799.68 799.68 799.67
16.80 DISCHG 5.69 5.59 5.50 5.41
16.80 ELEV 799.65 799.65 799.65 799.65
17.60 DISCHG 4.96 4.92 4.88 4.83
17.60 ELEV 799.63 799.63 799.63 799.63
18.40 DISCHG 4.31 4.25 4.19 4.14
18.40 ELEV 799.61 799.61 799.61 799.61
19.20 DISCHG 3.87 3.85 3.83 3.81
19.20 ELEV 799.60 799.60 799.60 799.60
20.00 DISCHG 3.63 3.56 3.50 3.44
20.00 ELEV 799.59 799.59 799.59 799.59
20.80 DISCHG 3.09 3.05 3.02 2.99
20.80 ELEV 799.57 799.57 799.57 799.57
21.60 DISCHG 2.85 2.84 2.83 2.82
21.60
22.40 ELEV
DISCHG 799.57
2.78 799.57
2.77 799.57
2.77 799.57
2.77
22.40 ELEV 799.56 799.56 799.56 799.56
23.20 DISCHG 2.76 2.76 2.75 2.75
23.20 ELEV 799.56 799.56 799.56 799.56
RUNOFF VOLUME ABOVE BASEFLOW = 4.33 WATERSHED INCHES,
.45 .54
799.30 799.38
98.49 90.48
801.16 801.07
33.54 30.62
800.28 800.23
15.70 15.01
799.96 799.94
10.44 10.05
799.80 799.79
7.61 7.41
799.71 799.71
6.18 6.10
799.67 799.67
5.33 5.25
799.64 799.64
4.77 4.69
799.63 799.62
4.09 4.04
799.61 799.60
3.79 3.78
799.60 799.60
3.38 3.32
799.58 799.58
2.96 2.94
799.57 799.57
2.81 2.80
799.57 799.57
2.77 2.76
799.56 799.56
2.75 2.75
799.56 799.56
1.36
799.52
81.14
800.96
28.01
800.19
14.38
799.92
9.68
799.78
7.22
799.70
6.03
799.67
5.18
799.64
4.61
799.62
4.00
799.60
3.76
799.60
3.27
799.58
2.92
799.57
2.80
799.57
2.76
799.56
2.75
799.56
7.32
799.71
72.05
800.84
25.71
800.15
13.79
799.90
9.35
799.77
7.04
799.70
5.96
799.66
5.12
799.64
4.53
799.62
3.96
799.60
3.75
799.59
3.22
799.58
2.90
799.57
2.79
799.57
2.76
799.56
2.75
799.56
20 JOB 1 PASS 1
30 PAGE 10
15.26 32.07
799.95 800.26
63.59 56.05
800.73 800.63
23.64 21.81
800.12 800.08
13.23 12.71
799.89 799.87
9.04 8.76
799.76 799.75
6.88 6.73
799.69 799.69
5.88 5.79
799.66 799.66
5.06 5.01
799.64 799.63
4.45 4.38
799.62 799.61
3.93 3.90
799.60 799.60
3.73 3.69
799.59 799.59
3.17 3.13
799.58 799.58
2.88 2.87
799.57 799.57
2.79 2.78
799.57 799.56
2.76 2.76
799.56 799.56
2.74 2.71
799.56 799.56
153.82 CFS-HRS, 12.71 ACRE-FEET; BASEFLOW = .00 CFS
RPERATION REACH CROSS SECTION 10
0 INPUT HYDROGRAPH= 4 OUTPUT HYDROGRAPH= 6
LENGTH = 800.00 FEET INPUT = COEFFICIENTS RELATED TO CROSS SECTIONAL AREA, X= 1.60, M= 1.44
MODIFIED ATT-KIN ROUTING COEFFICIENT = 1.00 PEAK TRAVEL TIME = .00 HOURS
*** WARNING REACH 10 ATT-KIN COEFF.(C) GREATER THAN 0.667, CONSIDER REDUCING MAIN TIME INCREMENT ***
PEAK TIME(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET)
12.23 102.78 (NULL)
IME(HRS) FIRST HYDROGRAPH POINT = .00 HOURS TIME INCREMENT = .08 HOURS DRAINAGE AREA = .05 SO.MI.
5.60 DISCHG .00 .00 .00 .00 .00 .00 .00 .00 .01 .01
6.40 DISCHG .01 .01 .01 .01 .01 .01 .01 .01 .01 .01
7.20 DISCHG .01 .01 .01 .02 .02 .02 .02 .02 .02 .02

0

TR20 XEQ 6/24/99 GRANDOVER (WEST) COM MERCIAL- POST-DEV. W/PONDS 50 YR, 06/22/99 20 JOB 1 PASS 1
REV 09/01/83 30 PAGE 11
8.00 DISCHG .02 .02 .02 .02 .03 .03 .03 .03 .03 .03
8.80 DISCHG .03 .04 .04 .04 .04 .04 .04 .05 .05 .05
9.60 DISCHG .05 .06 .06 .06 .06 .07 .07 .07 .07 .08
10.40
11.20 DISCHG
DISCHG .18
.24 .08
.28 .09
.33 .09
.39 .09
.45 .10
.54 .12
1.36 .15
7.32 .18
15.26 .21
32.07
12.00 DISCHG 56.68 83.63 99.69 102.75 98.49 90.48 81.14 72.05 63.59 56.05
12.80 DISCHG 49.53 44.36 40.38 36.78 33.54 30.62 28.01 25.71 23.64 21.81
13.60 DISCHG 20.19 18.72 17.40 16.43 15.70 15.01 14.38 13.79 13.23 12.71
14.40 DISCHG 12.21 11.74 11.29 10.86 10.44 10.05 9.68 9.35 9.04 8.76
15.20 DISCHG 8.51 8.28 8.06 7.83 7.61 7.41 7.22 7.04 6.88 6.73
16.00 DISCHG 6.60 6.48 6.37 6.27 6.18 6.10 6.03 5.96 5.88 5.79
16.80 DISCHG 5.69 5.59 5.50 5.41 5.33 5.25 5.18 5.12 5.06 5.01
17.60 DISCHG 4.96 4.92 4.88 4.83 4.77 4.69 4.61 4.53 4.45 4.38
18.40
19.20 DISCHG
DISCHG 4.31
3.87 4.25
3.85 4.19
3.83 4.14
3.81 4.09
3.79 4.04
3.78 4.00
3.76 3.96
3.75 3.93
3.73 3.90
3.69
20.00 DISCHG 3.63 3.56 3.50 3.44 3.38 3.32 3.27 3.22 3.17 3.13
20.80 DISCHG 3.09 3.05 3.02 2.99 2.96 2.94 2.92 2.90 2.88 2.87
21.60 DISCHG 2.85 2.84 2.83 2.82 2.81 2.80 2.80 2.79 2.79 2.78
22.40 DISCHG 2.78 2.77 2.77 2.77 2.77 2.76 2.76 2.76 2.76 2.76
23.20 DISCHG 2.76 2.76 2.75 2.75 2.75 2.75 2.75 2.75 2.74 2.71
RUNOFF VOLUME ABOVE BASEFLOW = 4.33 WATERSHED INC HES, 153.82 CFS-HRS, 12.71 ACRE-FEET; BASEF LOW = .00 CFS
PERATION ADDHYD CROSS SECTION 11
INPUT HYDROGRAPHS= 6,3 OUTPUT HYDROGRAPH= 1
***ELEVATION OUTPUT OPTION REQUESTED BUT NO ELEVATIONS GIVEN***
PEAK TIME(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET)
12.15 847.87 (NULL)
IME(HRS) FIRST HYDROGR APH POINT = .00 HOURS TIME INCR EMENT = .08 HOURS DRAINAGE AREA = .29 SQ.MI.
3.20 DISCHG .00 .00 .00 .00 .00 .00 .01 .01 .01 .01
4.00 DISCHG .01 .02 .02 .02 .03 .03 .04 .04 .05 .05
4.80 DISCHG .06 .06 .07 .07 .08 .09 .09 .10 .11 .11
5.60 DISCHG .12 .13 .14 .14 .15 .16 .17 .18 .19 .20
6.40 DISCHG .22 .23 .24 .25 .27 .28 .29 .31 .31 .32
7.20 DISCHG .32 .33 .34 .34 .35 .35 .36 .36 .37 .38
8.00 DISCHG .38 .39 .40 .40 .41 .42 .43 .44 .45 .45
8.80 DISCHG .46 .47 .48 .49 .50 .52 .53 .54 .55 .56

a 9.60
10.40 DISCHG
DISCHG .58
22.27 1.54
24.03 5.07
25.84 8.19
27.78 10.89
29.97 13.24
33.24 15.29
37.31 17.16
41.33 18.92
45.22 20.59
48.95
11.20 DISCHG 52.78 56.63 60.57 65.05 70.29 81.17 110.19 171.25 255.83 401.29
12.00 DISCHG 606.38 796.05 845.78 746.06 605.14 479.55 379.43 309.94 257.37 220.75
12.80 DISCHG 191.87 169.57 151.76 137.51 126.90 117.28 108.66 101.12 94.40 88.40
13.60 DISCHG 83.11 78.22 73.65 69.77 66.44 63.44 60.79 58.36 56.07 53.97
14.40 DISCHG 51.98 50.03 48.19 46.42 44.63 42.92 41.43 40.24 39.54 38.92
15.20 DISCHG 38.37 37.89 37.38 36.76 36.02 35.27 34.56 33.92 33.36 32.87

TR20 XEQ 6/24/99 GRANDOVER (WEST) COMMERCIAL- POST-DEV. W/PONDS 50 YR, 06/22/99 20 JOB 1 PASS 1
REV 09/01/83 30 PAGE 12
16.00
16.80 DISCHG
DISCHG 32.44
29.41 32.07
28.84 31.75
28.31 31.48
27.84 31.24
27.42 31.03
27.06 30.85
26.75 30.68
26.48 30.41
26.24 29.96
26.04
17.60 DISCHG 25.87 25.72 25.59 25.43 25.12 24.65 24.11 23.57 23.08 22.65
18.40 DISCHG 22.26 21.93 21.64 21.40 21.18 21.00 20.84 20.70 20.59 20.49
19.20 DISCHG 20.40 20.32 20.26 20.20 20.16 20.11 20.08 20.05 19.97 19.74
20.00 DISCHG 19.33 18.83 18.35 17.90 17.49 17.14 16.83 16.57 16.34 16.14
20.80 DISCHG 15.97 15.83 15.70 15.59 15.50 15.42 15.35 15.29 15.23 15.19
21.60 DISCHG 15.15 15.12 15.09 15.07 15.04 15.03 15.01 15.00 14.99 14.98
22.40 DISCHG 14.97 14.96 14.95 14.95 14.94 14.94 14.94 14.93 14.93 14.93
23.20 DISCHG 14.93 14.93 14.93 14.93 14.92 14.92 14.92 14.92 14.87 14.66
RUNOFF VOLUME ABO VE BASEFLOW = 4.96 WA TERSHED INCHES, 944.65 CFS -HRS, 78. 07 ACRE-F EET; BASEFLOW = .00 CFS
PERATION RUNOFF CROSS SECTION 12
OUTPUT H YDROGRAPH= 2
AREA= .10 SQ MI INPUT RUNOFF CURVE= 82. T IME OF CON CENTRATION= .25 HOU RS
INTERNAL HYDROGRAPH TIME INCREMENT= .0333 HOURS
PEAK TIME(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATIO N(FEET)
12.05
16.44 338.62
9.54 (RUNOFF)
(RUNOFF)
17.66 7.97 (RUNOFF)
19.65 6.40 (RUNOFF)

IME(HRS) FIRST HYDROGR APH POINT = .00 HOURS TIME INCREMENT = .08 HOURS DRAINAGE AREA = .10 SQ.MI.
4.80 DISCHG .00 .00 .00 .00 .00 .00 .02 .06 .10 .15
5.60 DISCHG .20 .25 .30 .35 .40 .45 .52 .62 .72 .81
6.40 DISCHG .89 .97 1.04 1.11 1.18 1.24 1.31 1.38 1.44 1.50
7.20 DISCHG 1.57 1.63 1.69 1.75 1.81 1.87 1.93 1.99 2.04 2.10
8.00 DISCHG 2.15 2.25 2.46 2.67 2.85 3.10 3.36 3.54 3.68 3.79
8.80 DISCHG 3.89 3.98 4.08 4.18 4.41 4.72 4.96 5.13 5.26 5.38
9.60 DISCHG 5.60 5.95 6.26 6.46 6.62 6.75 6.96 7.33 7.70 8.08
10.40 DISCHG 8.75 9.45 10.05 11.09 12.23 13.09 14.27 15.58 16.59 17.84
11.20 DISCHG 19.34 20.54 22.23 24.59 27.22 41.86 74.57 103.56 149.13 237.89
12.00 DISCHG 319.81 331.70 246.51 153.41 104.60 75.85 58.71 49.67 43.56 39.21
12.80 DISCHG 36.69 34.01 31.09 29.25 27.48 25.53 24.29 23.18 21.90 21.01
13.60
14.40 DISCHG
DISCHG 20.14
13.66 18.90
13.12 17.98
12.75 17.37
12.19 16.68
11.62 16.15
11.29 15.75
11.16 15.14
11.10 14.61
11.07 14.24
11.06
15.20 DISCHG 11.06 11.03 10.74 10.21 9.82 9.64 9.57 9.53 9.52 9.51
16.00 DISCHG 9.51 9.51 9.52 9.52 9.52 9.52 9.53 9.45 9.01 8.49
16.80 DISCHG 8.19 8.06 8.00 7.97 7.96 7.96 7.96 7.96 7.96 7.96
17.60 DISCHG 7.97 7.97 7.96 7.76 7.24 6.78 6.57 6.47 6.42 6.40
18.40 DISCHG 6.39 6.39 6.39 6.39 6.39 6.39 6.39 6.39 6.40 6.40
19.20 DISCHG 6.40 6.40 6.40 6.40 6.40 6.40 6.40 6.40 6.19 5.67
20.00 DISCHG 5.21 4.99 4.89 4.84 4.82 4.81 4.81 4.81 4.81 4.81
20.80 DISCHG 4.81 4.81 4.81 4.81 4.81 4.81 4.82 4.82 4.82 4.82
21.60
22.40 DISCHG
DISCHG 4.82
4.82 4.82
4.82 4.82
4.82 4.82
4.82 4.82
4.83 4.82
4.83 4.82
4.83 4.82
4.83 4.82
4.83 4.82
4.83
23.20 DISCHG 4.83 4.83 4.83 4.83 4.83 4.83 4.83 4.82 4.62 4.09

I
TR20 XEQ 6/24/99 GRANDOVER (WEST) COMMERCIAL- POST-DEV. W/PONDS 50 YR, 06/22/99 20 JOB 1 PASS 1
REV 09/01/83 30 PAGE 13
RUNOFF VOLUME ABOVE BASEFLOW = 4.62 WATERSHED INCHES, 297.98 CFS-HRS, 24.62 ACRE-FEET; BASEFLOW = .00 CFS
OPERATION ADDHYD CROSS SECTION 13
INPUT HYDROGRAPHS= 1,2 OUTPUT HYDROGRAPH= 3
'ELEVATION OUTPUT OPTION REQUESTED BUT NO ELEVATIONS GIVEN'
PEAK TIME(HRS) PEAK DISCHARGE(CFS)
ITIMEORS)
3.20
4.00
4.80
5.60
6.40
7.20
8.00
8.80
9.60
10.40
11.20
12.00
12.80
13.60
14.40
15.20
16.00
16.80
17.60
18.40
19.20
20.00
20.80
21.60
22.40
23.20
12.11 1142.30
23.64 19.76
PEAK ELEVATION(FEET)
(NULL)
(NULL)
FIRST HYDROGRAPH POINT = .00 HOURS TIME INCREMENT = .08 HOURS DRAINAGE AREA = .39 SQ.MI.
DISCHG .00 .00 .00 .00 .00 .00 .01 .01 .01 .01
DISCHG .01 .02 .02 .02 .03 .03 .04 .04 .05 .05
DISCHG .06 .06 .07 .07 .08 .09 .12 .16 .21 .27
DISCHG .32 .38 .44 .50 .56 .61 .69 .79 .92 1.02
DISCHG 1.11 1.19 1.28 1.36 1.44 1.52 1.60 1.68 1.75 1.82
DISCHG 1.89 1.96 2.03 2.09 2.16 2.22 2.29 2.35 2.41 2.47
DISCHG 2.54 2.64 2.86 3.07 3.26 3.52 3.78 3.98 4.12 4.24
DISCHG 4.35 4.46 4.56 4.68 4.91 5.23 5.49 5.67 5.81 5.95
DISCHG 6.17 7.49 11.33 14.65 17.51 19.99 22.25 24.49 26.62 28.67
DISCHG 31.02 33.48 35.89 38.88 42.20 46.33 51.58 56.91 61.80 66.79
DISCHG 72.11 77.17 82.80 89.64 97.51 123.03 184.76 274.81 404.96 639.18
DISCHG 926.19 1127.76 1092.29 899.47 709.73 555.40 438.14 359.61 300.93 259.96
DISCHG 228.57 203.58 182.85 166.75 154.37 142.81 132.95 124.31 116.30 109.40
DISCHG 103.25 97.12 91.63 87.14 83.12 79.59 76.53 73.50 70.68 68.20
DISCHG 65.64 63.16 60.94 58.61 56.24 54.21 52.59 51.34 50.61 49.98
DISCHG 49.43 48.92 48.12 46.97 45.85 44.91 44.12 43.45 42.88 42.38
DISCHG 41.95 41.59 41.27 40.99 40.76 40.55 40.38 40.12 39.41 38.45
DISCHG 37.59 36.90 36.31 35.81 35.39 35.02 34.71 34.44 34.21 34.01
DISCHG 33.84 33.69 33.55 33.18 32.36 31.43 30.67 30.04 29.50 29.05
DISCHG 28.66 28.32 28.03 27.79 27.57 27.39 27.23 27.10 26.98 26.88
DISCHG 26.80 26.72 26.66 26.60 26.56 26.52 26.48 26.44 26.16 25.40
DISCHG 24.54 23.83 23.24 22.74 22.32 21.96 21.65 21.38 21.15 20.95
DISCHG 20.78 20.64 20.51 20.40 20.31 20.23 20.16 20.10 20.05 20.01
DISCHG 19.97 19.94 19.91 19.88 19.86 19.85 19.83 19.82 19.81 19.80
DISCHG 19.79 19.78 19.78 19.77 19.77 19.77 19.76 19.76 19.76 19.76
DISCHG 19.76 19.76 19.76 19.76 19.76 19.76 19.76 19.74 19.48 18.75
RUNOFF VOLUME ABOVE BASEFLOW = 4.87 WATERSHED INCHES, 1242.63 CFS-HRS, 102.69 ACRE-FEET; BASEFLOW = .00 CFS
OPERATION RESVOR STRUCTURE 15
INPUT HYDROGRAPH= 3 OUTPUT HYDROGRAPH= 4
SURFACE ELEVATION= 770.86
PEAK TIME(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET)
12.20 1019.66 774.39
I
TR20 XEQ
6/24/99
GRANDOVER
(WEST) COMMERCIAL-
POST-DEV.
W/PONDS 50
YR, 06/22/99 20
JOB 1 PASS 1
REV 09/01/83 30 PAGE 14
TIME(HRS) FIRST HYDROG RAPH POINT = .00 HOURS TIME INCREMENT = .08 HOURS DRAINAGE AREA = .39 SQ.MI.
6.40 DISCHG .01 .01 .01 .01 .01 .01 .01 .01 .01 .01
6.40 ELEV 770.88 770.88 770.88 770.89 770.89 770.89 770.90 770.90 770.90 770.91
7.20 DISCHG .01 .02 .02 .02 .02 .02 .02 .02 .03 .03
7.20 ELEV 770.91 770.92 770.92 770.92 770.93 770.93 770.94 770.94 770.95 770.95
8.00 DISCHG .03 .03 .03 .03 .04 .04 .11 1.23 2.07 2.70
8.00 ELEV 770.96 770.97 770.97 770.98 770.99 770.99 771.00 771.01 771.01 771.02
8.80 DISCHG 3.18 3.54 3.83 4.07 4.28 4.52 4.77 5.01 5.23 5.42
8.80 ELEV 771.02 771.02 771.02 771.02 771.03 771.03 771.03 771.03 771.03 771.03
9.60
9.60 DISCHG
ELEV 5.61
771.03 5.98
771.04 7.00
771.04 8.78
771.05 10.96
771.07 13.28
771.08 15.62
771.10 17.93
771.11 20.20
771.12 22.42
771.14
10.40 DISCHG 24.63 26.90 29.22 31.66 34.30 37.27 40.75 44.77 49.12 53.64
10.40 ELEV 771.15 771.17 771.18 771.20 771.21 771.23 771.25 771.28 771.30 771.33
11.20 DISCHG 58.35 63.21 68.21 73.57 79.53 88.69 108.12 144.38 226.26 365.65
11.20 ELEV 771.36 771.39 771.42 771.45 771.49 771.55 771.67 771.89 772.22 772.69
12.00 DISCHG 580.76 828.65 999.08 997.13 879.62 738.98 604.42 490.23 410.00 348.95
12.00 ELEV 773.32 773.97 774.35 774.34 774.08 773.73 773.38 773.08 772.84 772.63
12.80 DISCHG 299.62 260.25 228.67 203.28 183.15 166.87 156.44 148.15 139.85 131.81
12.80 ELEV 772.46 772.33 772.23 772.14 772.07 772.02 771.97 771.91 771.86 771.81
13.60
13.60 DISCHG
ELEV 124.21
771.77 117.05
771.72 110.30
771.68 104.06
771.64 98.42
771.61 93.34
771.58 88.78
771.55 84.68
771.52 80.93
771.50 77.51
771.48
14.40 DISCHG 74.35 71.39 68.60 65.97 63.43 60.98 58.72 56.71 55.00 53.60
14.40 ELEV 771.46 771.44 771.42 771.41 771.39 771.38 771.36 771.35 771.34 771.33
15.20 DISCHG 52.44 51.47 50.59 49.68 48.71 47.71 46.76 45.88 45.07 44.34
15.20 ELEV 771.32 771.32 771.31 771.31 771.30 771.29 771.29 771.28 771.28 771.27
16.00 DISCHG 43.69 43.12 42.62 42.17 41.79 41.45 41.16 40.89 40.55 40.07
16.00
16.80 ELEV
DISCHG 771.27
39.46 771.27
38.80 771.26
38.15 771.26
37.53 771.26
36.95 771.26
36.43 771.25
35.96 771.25
35.55 771.25
35.18 771.25
34.86
16.80 ELEV 771.24 771.24 771.24 771.23 771.23 771.22 771.22 771.22 771.22 771.22
17.60 DISCHG 34.58 34.34 34.12 33.90 33.56 33.07 32.47 31.84 31.22 30.64
17.60 ELEV 771.21 771.21 771.21 771.21 771.21 771.20 771.20 771.20 771.19 771.19
18.40 DISCHG 30.11 29.62 29.19 28.81 28.47 28.18 27.92 27.70 27.50 27.33
18.40 ELEV 771.19 771.18 771.18 771.18 771.18 771.17 771.17 771.17 771.17 771.17
rA 19.20 DISCHG 27.18 27.06 26.95 26.85 26.77 26.70 26.64 26.59 26.50 26.29
19.20 ELEV 771.17 771.17 771.17 771.17 771.17 771.16 771.16 771.16 771.16 771.16
20.00 DISCHG 25.89 25.38 24.83 24.28 23.76 23.28 22.84 22.44 22.09 21.78
20.00
20.80 ELEV
DISCHG 771.16
21.51 771.16
21.27 771.15
21.06 771.15
20.88 771.15
20.73 771.14
20.59 771.14
20.47 771.14
20.37 771.14
20.28 771.13
20.21
20.80 ELEV 771.13 771.13 771.13 771.13 771.13 771.13 771.13 771.13 771.13 771.12
21.60 DISCHG 20.14 20.09 20.04 20.00 19.96 19.93 19.90 19.88 19.86 19.84
21.60 ELEV 771.12 771.12 771.12 771.12 771.12 771.12 771.12 771.12 771.12 771.12
22.40 DISCHG 19.83 19.82 19.81 19.80 19.79 19.78 19.78 19.77 19.77 19.77
22.40 ELEV 771.12 771.12 771.12 771.12 771.12 771.12 771.12 771.12 771.12 771.12
23.20 DISCHG 19.76 19.76 19.76 19.76 19.76 19.76 19.76 19.76 19.71 19.54
0 23.20 ELEV 771.12 771.12 771.12 771.12 771.12 771.12 771.12 771.12 771.12 771.12
RUNOFF VOLUME ABOVE BASEFLOW = 4.84 WATERSHED INCHES, 1232.64 CFS-HRS, 101.87 ACRE-FEET; BASEFLOW = .00 CFS

u
TR20 XEQ 6/24/99 GRANOOVER (WEST) COMMERCIAL- POST-DEV. W/PONDS 50 YR, 06/22/99 20
REV 09/01/83 30
OPERATION REACH CROSS SECTION 15
INPUT HYDROGRAPH= 4 OUTPUT HYDROGRAPH= 5
LENGTH = 1200.00 FEET INPUT = COEFFICIENTS RELATED TO CROSS SECTIONAL AREA, X= .85, M= 1.38
MODIFIED ATT-KIN ROUTING COEFFICIENT = .99 PEAK TRAVEL TIME = .08 HOURS
*** WARNING REACH 15 ATT-KIN COEFF.(C) GREATER THAN 0.667, CONSIDER REDUCING MAIN TIME INCREMENT ***
JOB 1 PASS 1
PAGE 15
PEAK TIME(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET)
72.28 1018.97 (NULL)
TIME(HRS) FIR ST HYDROGR APH POINT = .00 HOU RS TIME INCREMENT = .08 HOURS DRAINAGE AREA = .39 SQ
MI

6.40
DISCHG
.00
.00
.00
.01
.01
.01
.01
.01
.01 .
.
.01
7.20 DISCHG .01 .01 .01 .02 .02 .02 .02 .02 .02 .03
8.00 DISCHG .03 .03 .03 .03 .03 .04 .04 .11 1.22 2.07
8.80 DISCHG 2.70 3.17 3.54 3.83 4.06 4.28 4.52 4.77 5.01 5.22
9.60 DISCHG 5.42 5.61 5.97 6.99 8.77 10.94 13.26 15.60 17.91 20.18
10.40 DISCHG 22.40 24.61 26.89 29.21 31.64 34.28 37.25 40.73 44.74 49.09
11.20
12.00 DISCHG
DISCHG 53.61
364.66 58.32
579.24 63.17
826.89 68.17
997.87 73.54
997.13 79.49
880.45 88.63
739.97 107.99
605.38 144.12
491.04 225.68
410.57
12.80 DISCHG 349.38 299.97 260.53 228.89 203.46 183.30 166.98 156.51 148.21 139.91
13.60 DISCHG 131.86 124.27 117.10 110.34 104.11 98.46 93.37 88.82 84.71 80.96
14.40 DISCHG 77.53 74.38 71.41 68.62 65.99 63.44 61.00 58.74 56.72 55.01
15.20 DISCHG 53.61 52.45 51.47 50.59 49.69 48.71 47.72 46.77 45.88 45.07
16.00 DISCHG 44.35 43.70 43.12 42.62 42.18 41.79 41.45 41.16 40.89 40.56
16.80 DISCHG 40.07 39.46 38.80 38.15 37.53 36.96 36.44 35.97 35.55 35.19
17.60 DISCHG 34.87 34.58 34.34 34.13 33.90 33.56 33.07 32.47 31.84 31.23
18.40 DISCHG 30.64 30.11 29.63 29.20 28.81 28.48 28.18 27.92 27.70 27.50
19.20 DISCHG 27.33 27.18 27.06 26.95 26.85 26.77 26.70 26.64 26
59 26
50
20.00 DISCHG 26.29 25.90 25.39 24.83 24.29 23.76 23.28 22.84 .
22.44 .
22.09
20.80 DISCHG 21.78 21.51 21.27 21.07 20.88 20.73 20.59 20.47 20.37 20.28
21.60 DISCHG 20.21 20.14 20.09 20.04 20.00 19.96 19.93 19.90 19.88 19.86
22.40 DISCHG 19.84 19.83 19.82 19.81 19.80 19.79 19.78 19.78 19.77 19.77
23.20 DISCHG 19.77 19.76 19.76 19.76 19.76 19.76 19.76 19.76 19.75 19.71
RUNOFF VOLUME ABOVE BASEFLOW = 4.83 WAT ERSHED INCHES, 1 231.47 CFS -HRS, 101.77 ACRE-FEET; BASEFLOW = .00 CFS
0
OPERATION RUNOFF CROSS SECTION 16
OUTPUT HYDROGRAPH= 6
AREA= .14 SO MI INPUT RUNOFF CURVE= 83. TIME OF CONCENTRATION= .17 HOURS
INTERNAL HYDROGRAPH TIME INCREMENT= .0227 HOURS
I' PEAK TIME(HRS)
12.00
15.17
16.44
17.65
19.65
23.64
PEAK DISCHARGE(CFS)
530.23
15.64
13.49
11.26
9.04
6.82
PEAK ELEVATION(FEET)
(RUNOFF)
(RUNOFF)
(RUNOFF)
(RUNOFF)
(RUNOFF)
(RUNOFF)
P-
Fi?
u
u
P.
0

-1

TR20 XEQ 6/24/99 GRANDOVER (WEST) C OMMERCIAL- POST-DEV. W/PONDS 50 YR, 06/22/99 20 JOB 1 PASS 1
REV 09/01/83 30 PAGE 16
TIME(HRS) FIRST HYDROGRAPH POINT = .00 HOURS TIME INCREMENT = .08 HOURS DRAINAGE AREA = .14 SQ.MI.
4.80 DISCHG .00 .00 .03 .09 .17 .24 .32 .40 .47 .55
5.60 DISCHG .62 .69 .77 .84 .91 .98 1.11 1.33 1
48 1
60
6.40 DISCHG 1.70 1.81 1.91 2.00 2.10 2.19 2.29 2.38 .
2.47 .
2.56
7.20 DISCHG 2.65 2.73 2.82 2.90 2.99 3.07 3.15 3.23 3.31 3.39
8.00 DISCHG 3.46 3.71 4.14 4.38 4.67 5.18 5.49 5.68 5.83 5.97
8.80 DISCHG 6.10 6.22 6.35 6.52 7.06 7.53 7.78 7.96 8.12 8.28
9.60 DISCHG 8.79 9.40 9.72 9.93 10.11 10.28 10.71 11.43 11.85 12.54
10.40 DISCHG 13.96 14.77 15.68 17.88 19.27 20.30 22.67 24.38 25.46 27.94
11.20 DISCHG 30.00 31.28 34.99 38.63 42.64 88.20 146.55 175.41 284.68 451.40
12.00 DISCHG 530.23 452.73 234.95 138.41 102.60 76.43 65.42 60.75 54.85 51.72
12.80 DISCHG 49.82 44.55 41.13 39.69 36.53 34.18 33.29 31.34 29.58 28.93
13.60 DISCHG 27.25 25.35 24.66 23.82 22.77 22.37 21.74 20.67 20.21 19
68
14.40 DISCHG 18.58 18.05 17.60 16.49 15.88 15.69 15.64 15.62 15.62 .
15.63
15.20 DISCHG 15.63 15.57 14.69 13.83 13.55 13.46 13.43 13.43 13.43 13.44
16.00 DISCHG 13.44 13.44 13.45 13.45 13.45 13.46 13.46 13.18 12.10 11.50
16.80 DISCHG 11.31 11.26 11.24 11.24 11.24 11.24 11.24 11.25 11.25 11.25
17.60 DISCHG 11.25 11.25 11.24 10.59 9.58 9.19 9.07 9.03 9.02 9.02
18.40 DISCHG 9.02 9.02 9.02 9.02 9.02 9.02 9.03 9.03 9.03 9.03
19.20
20.00 DISCHG
DISCHG 9.03
6.96 9.03
6.84 9.03
6.80 9.04
6.79 9.04
6.79 9.04
6.79 9.04
6.79 9.02
6.79 8.37
6.79 7.36
6.79
20.80 DISCHG 6.79 6.79 6.79 6.79 6.79 6.80 6.80 6.80 6.80 6.80
21.60 DISCHG 6.80 6.80 6.80 6.80 6.80 6.80 6.80 6.80 6.80 6.81
22.40 DISCHG 6.81 6.81 6.81 6.81 6.81 6.81 6.81 6.81 6.81 6.81
23.20 DISCHG 6.81 6.81 6.81 6.82 6.82 6.82 6.82 6.80 6.14 5.12
RUNOFF VOLUME ABOVE BASEFLOW = 4.74 WATERSHED I NCHES, 428.14 CFS-HRS, 35. 38 ACRE-FE ET; BASEFLOW = .00 CFS
OPERATION ADDHYD CROSS SECTION 17
INPUT HYDROGRAPHS= 5,6 OUTPUT HYDROGRAPH= 7
**ELEVATION OUTPUT OPTION REQUESTED BUT NO ELEVATIONS GIVEN***
PEAK TIME(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET)
12.25 1137.89 (NULL)
23.64 26.58 (NULL)
IME(HRS) FIRST HYDROGRAPH POINT = .00 HOU RS TIME INCREMENT = .08 HOURS DRAINAGE AREA = .53 SQ.MI.
4.80 DISCHG .00 .00 .03 .09 .17 .24 .32 .40 .47 .55
5.60 DISCHG .62 .69 .77 .84 .91 .98 1.11 1.33 1.48 1.60
6.40 DISCHG 1.70 1.81 1.91 2.01 2.11 2.20 2.29 2.39 2.48 2.57
7.20 DISCHG 2.66 2.75 2.83 2.92 3.00 3.09 3.17 3.25 3.33 3.41
8.00 DISCHG 3.49 3.74 4.17 4.42 4.70 5.21 5.53 5.79 7.06 8.03
8.80 DISCHG 8.79 9.40 9.89 10.35 11.13 11.81 12.30 12.73 13.13 13.50
9.60 DISCHG 14.21 15.01 15.69 16.92 18.88 21.22 23.97 27.03 29.76 32.73
10.40 DISCHG 36.36 39.38 42.57 47.08 50.91 54.59 59.92 65.11 70.21 77.03
11.20 DISCHG 83.61 89.60 98.16 106.80 116.18 167.69 235.18 283.39 428.80 677.08

0
TR20 XEQ 6/24/99 GRANDOVER (WEST) COMMERCIAL- POST-DEV. W/PONDS 50 YR, 06/22/99 20 JOB 1 PASS 1
REV 09/01/83 30 PAGE 17
0
12.00 DISCHG 894.89 1031.97 1061.84 1136.27 1099.73 956.88 805.39
12.80 DISCHG 399.21 344.52 301.66 268.58 240.00 217.47 200.27
13.60 DISCHG 159.11 149.62 141.76 134.16 126.88 120.83 115.11
14.40 DISCHG 96.11 92.42 89.01 85.11 81.87 79.13 76.64
15.20 DISCHG 69.24 68.01 66.16 64.43 63.24 62.17 61.16
16.00 DISCHG 57.78 57.14 56.57 56.07 55.63 55.25 54.91
16.80 DISCHG 51.39 50.72 50.04 49.39 48.77 48.20 47.68
17.60 DISCHG 46.12 45.84 45.58 44.72 43.48 42.75 42.14
111.40 DISCHG 39.66 39.13 38.65 38.22 37.84 37.50 37.21
19.20 DISCHG 36.36 36.22 36.09 35.98 35.89 35.81 35.74
20.00 DISCHG 33.25 32.74 32.19 31.62 31.07 30.55 30.07
20.80 DISCHG 28.57 28.30 28.07 27.86 27.68 27.52 27.39
21.60 DISCHG 27.01 26.94 26.89 26.84 26.80 26.76 26.73
22.40 DISCHG 26.65 26.63 26.62 26.61 26.60 26.60 26.59
23.20 DISCHG 26.58 26.58 26.58 26.58 26.57 26.57 26.57
RUNOFF VOLUME ABOVE BASEFLOW = 4.81 WATERSHED INCHES, 1659.61 CFS-HRS, 137.15 ACRE-
OPERATION RESVOR STRUCTURE 18
Q INPUT HYDROGRAPH= 7 OUTPUT HYDROGRAPH= 1
SURFACE ELEVATION= 753.50
PEAK TIME(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET)
12.42 922.49 760.44
TIME(HRS) FIRST HYDROGRAPH POINT = .00 HOURS TIME INCREMENT = .08 HOURS
4.80 DISCHG .00 .00 .00 .00 .00 .00 .01
4.80 ELEV 753.50 753.50 753.50 753.50 753.50 753.50 753.50
5.60 DISCHG .02 .03 .03 .04 .04 .05 .06
5.60 ELEV 753.51 753.51 753.52 753.52 753.52 753.53 753.53
6.40 DISCHG .10 .12 .13 .15 .16 .18 .19
6.40 ELEV 753.55 753.56 753.57 753.58 753.58 753.59 753.60
7.20 DISCHG .27 .29 .31 .33 .35 .37 .39
7.20 ELEV 753.64 753.65 753.66 753.67 753.68 753.69 753.71
8.00 DISCHG .48 .51 .54 .57 .60 .63 .67
8.00 ELEV 753.75 753.77 753.78 753.80 753.82 753.83 753.85
8.80 DISCHG .87 .94 1.03 1.13 1.24 1.35 1.47
8.80 ELEV 753.96 753.99 754.02 754.05 754.08 754.12 754.15
9.60 DISCHG 1.97 2.11 2.26 2.41 2.58 2.74 2.88
9.60 ELEV 754.30 754.34 754.38 754.42 754.47 754.53 754.59
10.40 DISCHG 3.64 5.75 10.20 14.58 18.94 23.21 27.52
10.40 ELEV 754.94 755.04 755.12 755.20 755.28 755.36 755.43
11.20 DISCHG 54.50 61.45 68.47 75.83 83.63 96.57 119.84
11.20 ELEV 755.74 755.81 755.88 755.95 756.03 756.13 756.31
12.00 DISCHG 419.48 558.35 687.65 796.54 881.62 920.44 910.04
12.00 ELEV 758.11 758.77 759.36 759.86 760.25 760.43 760.38
12.80 DISCHG 642.33 570.75 505.20 450.09 401.38 355.74 316.68
12.80 ELEV 759.16 758.83 758.53 758.26 758.02 757.78 757.57
13.60 DISCHG 220.94 203.88 188.85 175.71 164.04 153.66 144.44
666.13 545.89 462.29
187.85 177.79 168.84
109.48 104.92 100.64
74.36 72.35 70.64
60.20 59.31 58.51
54.34 52.99 52.06
47.21 46.80 46.44
41.50 40.86 40.24
36.95 36.73 36.53
35.67 34.96 33.86
29.63 29.23 28.88
27.27 27.17 27.08
26.70 26.68 26.66
26.59 26.58 26.58
26.56 25.90 24.83
FEET; BASEFLOW = .00 CFS
DRAINAGE AREA = .53 SQ.MI.
.01 .01 .02
753.50 753.51 753.51
.07 .08 .09
753.54 753.54 753.55
.21 .23 .25
753.61 753.62 753.63
.41 .44 .46
753.72 753.73 753.74
.71 .76 .81
753.87 753.90 753.93
1.59 1.71 1.84
754.19 754.22 754.26
3.04 3.22 3.42
754.67 754.75 754.84
32.52 40.13 47.37
755.51 755.59 755.67
151.93 204.66 290.38
756.55 756.91 757.42
863.91 795.66 718.49
760.17 759.86 •759.50
285.68 260.60 239.31
757.39 757.25 757.12
137.21 130.55 124.39
L
a
TR20 XEQ 6/24/99 GRANDOVER (WEST) COMMERCIAL- POST-DEV. W/PONDS 50 YR, 06/22/99 20
REV 09/01/83 30
JOB 1 PASS 1
PAGE 18
13.60
14.40 ELEV
DISCHG 757.01
118.62 756.90
113.21 756.80
108.22 756.71
103.53 756.64
99.08 756.57
94.96 756.50
91.17 756.45
87.69 756.40
84.51 756.35
81.62
14.40 ELEV 756.30 756.26 756.22 756.18 756.15 756.12 756.09 756.06 756.03 756.01
15.20 DISCHG 79.06 76.80 74.70 72.67 70.75 69.01 67.42 65.96 64.62 63
38
15.20 ELEV 755.99 755.96 755.94 755.92 755.90 755.88 755.87 755.85 755.84 .
755.83
16.00 DISCHG 62.25 61.21 60.27 59.41 58.64 57.95 57.33 56.74 56.08 55.31
16.00 ELEV 755.82 755.81 755.80 755.79 755.78 755.77 755.77 755.76 755.75 755.75
16.80 DISCHG 54.53 53.78 53.04 52.32 51.62 50.94 50.29 49.67 49.10 48.56
16.80 ELEV 755.74 755.73 755.72 755.72 755.71 755.70 755.69 755.69 755.68 755.68
17.60 DISCHG 48.07 47.61 47.20 46.76 46.18 45.52 44.85 44.20 43.54 42.90
17.60 ELEV 755.67 755.67 755.66 755.66 755.65 755.65 755.64 755.63 755.63 755.62
18.40 DISCHG 42.26 41.64 41.04 40.48 39.95 39.45 39.00 38.58 38.21 37.86
18.40 ELEV 755.61 755.61 755.60 755.59 755.59 755.58 755.58 755.58 755.57 755.57
19.20 DISCHG 37.56 37.28 37.04 36.82 36.63 36.46 36.31 36.18 35.99 35.65
19.20 ELEV 755.57 755.56 755.56 755.56 755.56 755.55 755.55 755.55 755.55 755.55
20.00 DISCHG 35.20 34.72 34.23 33.73 33.21 32.69 32.18 31.67 31.19 30.90
20.00 ELEV 755.54 755.54 755.53 755.53 755.52 755.52 755.51 755.51 755.50 755.50
20.80 DISCHG 30.62 30.35 30.07 29.81 29.55 29.30 29.07 28.85 28.64 28.45
20.80 ELEV 755.49 755.49 755.48 755.48 755.47 755.47 755.46 755.46 755.45 755.45
21.60 DISCHG 28.27 28.11 27.96 27.82 27.69 27.58 27.47 27.38 27.29 27.21
21.60
22.40 ELEV
DISCHG 755.45
27.14 755.44
27.08 755.44
27.02 755.44
26.97 755.44
26.92 755.43
26.88 755.43
26.85 755.43
26.81 755.43
26.79 755.43
26.76
22.40 ELEV 755.43 755.43 755.42 755.42 755.42 755.42 755.42 755.42 755.42 755.42
23.20 DISCHG 26.74 26.72 26.70 26.68 26.67 26.66 26.65 26.64 26.58 26.43
23.20 ELEV 755.42 755.42 755.42 755.42 755.42 755.42 755.42 755.42 755.42 755.41
RUNOFF VOLUME ABOVE BASEFLOW = 4.67 WATERSHED INCHES, 1610.85 CFS-HRS, 133.12 ACRE-FEET; BASEFLOW = .00 CFS
q XECUTIVE CON
TROL OPERATION ENOCMP COMPUTATIONS COMPLETED FOR PASS 1
RECORD ID

XECUTIVE CONTROL OPERATION ENDJ OB RECORD ID

480
490

TR20 XEO 6/24/99 GRANDOVER (WEST) COMMERCIAL- POST-DEV. W/PONDS 50 YR, 06/22/99 20 JOB 1 SUMMARY
REV 09/01/83 30 PAGE 19
SUMMARY T ABLE 1 - SEL ECTED RESULTS OF STANDARD AND EXECUTIVE CONTROL INSTRUCTIONS IN THE ORDER PERFORMED
(A STAR(*) AFTER THE PEAK DISCHARGE TIME A ND RATE (CFS) VALUES INDICATES A FLAT TOP HYDROGRAPH
A QUESTION MARKO) INDICATES A HYDROGRAPH WITH PEAK AS LAST POINT.)
SECTION/ STANDARD RAIN ANTEC MAIN PRECIPITATION PEAK DISCHARGE
STRUCTURE CONTROL DRAINAG E TABLE MOIST TIME ------ ------------------- RUNOFF ------- --------- --------------- -------
ID OPERATION AREA # COND INCREM BEGIN AMOUNT DURATION AMOUNT ELEVATI ON TIME RATE RATE
(SQ MI) (HR) (HR) (IN) (HR) (IN) (FT) (HR) (CFS) (CSM)
ALTERNATE 1 STORM 1
SECTION 1 RUNOFF .24 2 2 .08 .0 6.70 24.00 5.51 --- 12.04 925.13 3854.7
STRUCTURE 16 RESVOR .24 2 2 .08 .0 6.70 24.00 5.11 800.47 12.14 750.47 3126.9
SECTION 3 REACH .24 2 2 .08 .0 6.70 24.00 5.11 --- 12.14 750.47 3126.9
SSECTION 4 RUNOFF .03 2 2 .08 .0 6.70 24.00 5.51 --- 12.03 97.75 3910.2
STRUCTURE 17 RESVOR .03 2 2 .08 .0 6.70 24.00 4.82 817.57 12.13 79.42 3176.9
R SECTION 6 REACH .03 2 2 .08 .0 6.70 24.00 4.82 --- 12.13 79.42 3176.9
SECTION 7 RUNOFF .03 2 2 .08 .0 6.70 24.00 4.96 --- 12.00 117.69 3923.0
XSECTION
TRUCTURE
9 8
1 ADDHYD
RESVOR .05
.05 2
2 2
2 .08
.08 .0
.0 6.70
6.70 24.00
24.00 4.90
4.33 ---
801.21 12.04
12.23 182.77
102.78 3323.0
1868.7
SECTION 10 REACH .05 2 2 .08 .0 6.70 24.00 4.33 --- 12.23 102.78 1868.7
SECTION 11 ADDHYD .29 2 2 .08 .0 6.70 24.00 4.96 --- 12.15 847.87 2874.1
SECTION
RI 12 RUNOFF .10 2 2 .08 .0 6.70 24.00 4.62 --- 12.05 338.62 3386.2
SECTION 13 ADDHYD .39 2 2 .08 .0 6.70 24.00 4.87 --- 12.11 1142.30 2891.9
STRUCTURE

SECTION
r 15

15 RESVOR

REACH .39

.39 2

2 2

2 .08

.08 .0

.0 6.70

6.70 24.00

24.00 4.84

4.83 774.39

--- 12.20

12.28 1019.66

1018.97 2581.4

2579.7
XSECTION 16 RUNOFF .14 2 2 .08 .0 6.70 24.00 4.74 --- 12.00 530.23 3787.4
SECTION
I 17 ADDHYD .53 2 2 .08 .0 6.70 24.00 4.81 --- 12.25 1137.89 2126.9
TRUCTURE 18 RESVOR .53 2 2 .08 .0 6.70 24.00 4.67 760.44 12.42 922.49 1724.3

TR20 XEQ 6/24/99 GRANDOVER (WEST) COMMERCIAL- POST-DEV. W/PONDS 50 YR, 06/22/99 20 JOB 1 SUMMARY
REV 09/01/83 30 PAGE 2C
SUMMARY TABLE 2 - SELECTED MODIFIED ATT-KIN REACH ROUTINGS IN ORDER OF STANDARD EXECUTIVE CONTROL INSTRUCTIONS
(A STAR(*) AFTER VOLUME ABOVE BASE(IN) INDICATES A HYDROGRAPH TRUNCATED AT A VALUE EXCEEDING BASE + 10% OF PEAK
A QUESTION MARK(?) AFTER COEFF.(C) INDICATES PARAMETERS OUTSIDE ACCEPTABLE LIMITS, SEE PREVIOUS WARNINGS)
HYDROGRAPH INFORMATION ROUTING PARAMETERS PEAK
OUTFLOW+ VOLUME MAIN ITER- Q AND A PEAK S/Q ATT- TRAVEL TIME
SEC REACH INFLOW OUTFLOW TNTERV.AREA BASE- ABOVE TIME ATION EQUATION LENGTH RATIO @PEAK KIN STOR- KINE-
ID LENGTH PEAK TIME PEAK TIME PEAK TIME FLOW BASE INCR # COEFF POWER FACTOR 0/I (K) COEFF AGE MATIC
(FT) (CFS) (HR) (CFS) (HR) (CFS) (HR) (CFS) (IN) (HR) (X) (M) (K*) (Q*) (SEC) (C) (HR) (HR)
ALTERNATE 1 STORM 1
3 1350 746 12.2 746 12.2 --- --- 0 5.11 .08 0 1.60 1.45 .007 1.000 86 1.00? .00 .00
6 800 78 12.2 78 12.2 --- --- 0 4.82 .08 0 1.60 1.44 .011 1.000 106 1.00? .00 .00
10 800 103 12.2 103 12.2 --- --- 0 4.33 .08 0 1.60 1.44 .005 1.000 97 1.00? .00 .00
15 1200 999 12.2 998 12.2 --- --- 0 4.84 .08 1 .850 1.38 .014 .999 146 .99? .08 .04
TR20 XEO 6/24/99 GRANDOVER (WEST) COMMERCIAL- POST-DEV. W/PONDS 50 YR, 06/22/99 20 JOB 1 SUMMARY
REV 09/01/83 30 PAGE 21
SUMMARY TABLE 3 - DISCHARGE (CFS) AT XSECTIONS AND STRUCTURES FOR ALL STORMS AND ALTERNATES
XSECTION/ DRAINAGE
STRUCTURE AREA STORM NUMBERS..........
ID (SO MI) 1
STRUCTURE 18 .53
ALTERNATE 1 922.49
STRUCTURE 17 .03
ALTERNATE 1 79.42
STRUCTURE 16 .24
ALTERNATE 1 750.47
STRUCTURE 15 .39
ALTERNATE 1 1019.66
STRUCTURE 1 .05
ALTERNATE 1 102.78
XSECTION 1 .24
ALTERNATE 1 925.13
XSECTION 3 .24
ALTERNATE 1 750.47
XSECTION 4 .03
ALTERNATE 1 97.75
ELECTION 6 .03
... ALTERNATE 1 79.42
XSECTION 7 .03
ALTERNATE 1 117.69
XSECTION 8 .05
ALTERNATE 1 182.77
XSECTION 10 .05
ALTERNATE 1 102.78
XSECTION 11 .29
ALTERNATE 1 847.87
XSECTION 12 .10
ALTERNATE 1 338.62

2
I
TR20 XEQ 6/24/99 GRANDOVER (WEST) COMMERCIAL- POST-DEV. W/PONDS 50 YR, 06/22/99
1 REV 09/01/83
SUMMARY TABLE 3 - DISCHARGE (CFS) AT XSECTIONS AND STRUCTURES FOR ALL STORMS AND ALTERNATES
XSECTION/ DRAINAGE
TRUCTURE AREA STORM NUMBERS..........
ID (SQ MI) 1
XSECTION 13 .39
ALTERNATE 1 1142.30
® XSECTION 15 .39
ALTERNATE 1 1018.97
XSECTION 16 .14
ALTERNATE 1 530.23
XSECTION 17 .53
ALTERNATE 1 1137.89
20 JOB 1 SUMMARY
30 PAGE 22
END OF 1 JOBS IN THIS RUN
Stop - Program terminated.
7

****************************
* ***
***
*****
****************************************
* * TR 20 S/N
* * HMVersion 3.40
* TR 20 * Date 6/24/99
* * Time 16:35:25
* Project Formulation Hydrology * Input file grand100.t20
* * Output file grand100.out

0
xxxxxxx xxxxxx xxxxx xxxxx
x x x x x x xx
x x x x x x x
x
x xxxxxx
x x x x x x
x x x x
x x x x xx x
x x x xxxxxxx xxxxx
...........................................
...........................................
...........................................
...........................................
... Full Microcomputer Implementation :..
.. by ..
... Haestad Methods, Inc. ...
...........................................
...........................................
...........................................
...........................................
37 Brookside Road * Waterbury, Connecticut 06708 * [phone]
r.

******************80 80 LIST OF INPUT DATA FOR TR-20 HYDROLOGY******************
JOB TR-20 FULLPRINT 10
TITLE 001 GRANDOVER (WEST) COMMERCIAL-POST-DEV. W/PONDS 100 YR, 06/22/99 20
TITLE 30
3 STRUCT 15 40
8 770.86 0.00 0.00 50
8 771.00 0.04 0.419 60
8 772.00 162.00 3.477 70
8 773.00 458.21 6.654 80
8 774.00 841.78 9.951 90
8 775.00 1296.00 13.370 100
8 775.65 1735.68 16.891 110
8 120
9 ENDTBL 140

3 STRUCT 16 170
8 795.5 0.00 0.00 171
8 796.0 0.30 1.440 172
8 797.1 0.53 4.699 173
8 797.5 30.95 5.917 174
8 798.0 103.12 7.462 175
8 798.5 199.51 9.035 176
8 799.0 315.07 10.635 177
8 800.0 593.51 13.916 178
8 801.0 925.22 17.308 179
8 180
8 181
8 182
g.g 9 ENDTBL 251
3 STRUCT 17 252
8 814.0 0.00 0.00 253
8 815.0 0.24 0.505 254

8 815.7 0.31 0.884 255
138 816.0 5.26 1.053 256
8 816.5 21.84 1.343 257
8 817.0 44.88 1.645 258
8 818.0 105.11 2.284 259
8 819.0 180.37 2.970 260
8 820.0 368.08 3.705 261
9 ENDTBL 262
3 STRUCT 18 270
8 753.50 0.00 0.00 271
8 754.00 0.95 0.78 272
8 754.50 2.67 1.81 273
8 755.00 3.77 2.83 274
8 755.50 31.14 4.17 275
8 756.00 80.33 5.51 276
8 756.50 143.75 7.19 277
0
**********************80-80 LIST OF INPUT DATA (CONTINUED)**********************
g 8 757.00 218.66 8.86 278
8 757.50 303.52 10.88 279
8 758.00 397.25 12.90 280
8 758.50 499.09 15.27 281
8 759.00 608.43 17.64 282
9 ENDTBL 283
3 STRUCT 01 290
8 798.50 0.00 0.00 291
8 799.00 0.10 0.70 292
8 799.50 0.68 1.54 293
8 800.00 16.87 2.38 294
8 800.50 46.18 3.39 295
8 801.00 84.03 4.39 296
8 801.50 128.80 5.53 297
8 802.00 179.55 6.67 298
8 802.50 235.63 8.01 299
8 803.00 402.66 9.34 300
8 803.50 662.04 10.93 301
8 804.00 982.86 12.51 302
9 ENDTBL 303
6 RUNOFF 1 001 1 0.24 90.00 0.251 1 1 1 360
6 RESVOR 2 16 1 2 795.5 1 1 1 1 1 370
6 REACH 3 003 2 3 1350.00 1.6 1.451 1 1 1 380
6 RUNOFF 1 004 4 0.025 90.00 0.231 1 1 1 390
6 RESVOR 2 17 4 5 814.00 1 1 1 1 1 391
6 REACH 3 006 5 6 800.00 1.6 1.441 1 1 1 392
6 RUNOFF 1 007 7 0.03 85.0 0.171 1 1 1 393
6 ADDHYD 4 008 7 6 5 1 1 1 1 1 394
6 RESVOR 2 01 5 4 798.50 1 1 1 1 1 395
6 REACH 3 010 4 6 800.0 1.6 1.441 1 1 1 396
6 ADDHYD 4 011 6 3 1 1 1 1 1 1 397
6 RUNOFF 1 012 2 0.10 82.0 0.251 1 1 1 398
6 ADDHYD 4 013 1 2 3 1 1 1 1 1 399
6 RESVOR 2 15 3 4 770.86 1 1 1 1 1 400
6 REACH 3 015 4 5 1200.00 0.85 1.381 1 1 1 401
6 RUNOFF 1 016 6 0.14 83.00 0.171 1 1 1 402
6 ADDHYD 4 017 5 6 7 1 1 1 1 1 403
6 RESVOR 2 18 7 1 753.50 1 1 1 1 1 404
ENDATA 450
7 INCREM 6 0.08 460
7 COMPUT 7 001 18 0.0 7.5 1.02 2 01 01 470
ENDCMP 1 480
ENDJOB 2 490
******************************END OF 80-80 LIST********************************
I
TR20 XEO 6/24/99 GRANDOVER (WEST) COMMERCIAL-POST-DEV. W/PONDS 100 YR, 06/22/99 20
REV 09/01/83 30
FILE 10" 1
COMPUTER PROGRAM FOR PROJECT FORMULATION - HYDROLOGY USER NOTES
JOB 1 PASS 1
PAGE 1
THE USERS MANUAL FOR THIS PROGRAM IS THE MAY 1982 DRAFT OF TR-20. CHANGES FROM THE 2/14/74 VERSION INCLUDE:
REACH ROUTING - THE MODIFIED ATT-KIN ROUTING PROCEDURE REPLACES THE CONVEX METHOD. INPUT DATA PREPARED FOR
PREVIOUS PROGRAM VERSIONS USING CONVEX ROUTING COEFFICIENTS WILL NOT RUN ON THIS VERSION.
THE PREFERRED TYPE OF DATA ENTRY IS CROSS SECTION DATA REPRESENTATIVE OF A REACH. IT IS RECOMMENDED THAT
THE OPTIONAL CROSS SECTION DISCHARGE-AREA PLOTS BE OBTAINED WHENEVER NEW CROSS SECTION DATA IS ENTERED.
THE PLOTS SHOULD BE CHECKED FOR REASONABLENESS AND ADEQUACY OF INPUT DATA FOR THE COMPUTATION OF "M"
VALUES USED IN THE ROUTING PROCEDURE.
GUIDELINES FOR DETERMINING OR ANALYZING REACH LENGTHS AND COEFFICIENTS (X,M) ARE AVAILABLE IN THE USERS
MANUAL. SUMMARY TABLE 2 DISPLAYS REACH ROUTING RESULTS AND ROUTING PARAMETERS FOR COMPARISON AND CHECKING.
HYDROGRAPH GENERATION - THE PROCEDURE TO CALCULATE THE INTERNAL TIME INCREMENT AND PEAK TIME OF THE UNIT
HYDROGRAPH HAVE BEEN IMPROVED. PEAK DISCHARGES AND TIMES MAY DIFFER FROM THE PREVIOUS VERSION. OUTPUT
HYDROGRAPHS ARE STILL INTERPOLATED, PRINTED, AND ROUTED AT THE USER SELECTED MAIN TIME INCREMENT.
INTERMEDIATE PEAKS - METHOD ADDED TO PROVIDE DISCHARGES AT INTERMEDIATE POINTS WITHIN REACHES WITHOUT ROUTING.
OTHER - THIS VERSION CONTAINS SOME ADDITIONS TO THE INPUT AND NUMEROUS MODIFICATIONS TO THE OUTPUT. USER
OPTIONS HAVE BEEN MODIFIED AND AUGMENTED ON THE JOB RECORD, RAINTABLES ADDED, ERROR AND WARNING MESSAGES
EXPANDED, AND THE SUMMARY TABLES COMPLETELY REVISED. THE HOLDOUT OPTION IS NOT OPERATIONAL AT THIS TIME.
PROGRAM QUESTIONS OR PROBLEMS SHOULD BE DIRECTED TO HYDRAULIC ENGINEERS AT THE SCS NATIONAL TECHNICAL CENTERS:
CHESTER, PA (NORTHEAST) -- 215-499-3933, FORT WORTH, TX (SOUTH) -- 334-5242 (FTS)
LINCOLN, NS (MIDWEST) -- 541-5318 (FTS), PORTLAND, OR (WEST) -- 423-4099 (FTS)
OR HYDROLOGY UNIT, ENGINEERING DIVISION, LANHAM, MD -- 436-7383 (FTS).
PROGRAM CHANGES SINCE MAY 1982:
12/17/82 - CORRECT PEAK RATE FACTOR FOR USER ENTERED DIMHYD
CORRECT REACH ROUTING PEAK TRAVEL TIME PRINTED WITH FULLPRINT OPTION
5/02/83 - CORRECT COMPUTATIONS FOR --
1. DIVISION OF BASEFLOW IN DIVERT OPERATION
2. HYDROGRAPH VOLUME SPLIT BETWEEN BASEFLOW AND ABOVE BASEFLOW
?$ 3. CROSS SECTION DATA PLOTTING POSITION
4. INTERMEDIATE PEAK WHEN "FROM" AREA IS LARGER THAN "THRU" AREA
5. STORAGE ROUTED REACH TRAVEL TIME FOR MULTIPEAK HYDROGRAPH
6. ORDERING "FLOW-FREQ" FILE FROM SUMMARY TABLE #3 DATA

7. BASEFLOW ENTERED WITH READHYD
8. LOW FLOW SPLIT DURING DIVERT PROCEDURE #2 WHEN SECTION RATINGS START AT DIFFERENT ELEVATIONS
ENHANCEMENTS ---
1. REPLACE USER MANUAL ERROR CODES (PAGE 4-9 TO 4-11) WITH MESSAGES
2. LABEL OUTPUT HYDROGRAPH FILES WITH CROSS SECTION/STRUCTURE, ALTERNATE AND STORM NO'S
09/01/83 - CORRECT INPUT AND OUTPUT ERRORS FOR INTERMEDIATE PEAKS
CORRECT COMBINATION OF RATING TABLES FOR DIVERT
CHECK REACH ROUTING PARAMETERS FOR ACCEPTABLE LIMITS
ELIMINATE MINIMUM REACH TRAVEL TIME WHEN ATT-KIN COEFFICIENT EQUALS ONE

TR20 XEQ 6/24/99 GRANDOVER (WEST) COMMERCIAL-POST-DEV. W/PONDS 100 YR, 06/22/99 20 JOB 1 PASS 1
REV 09/01/83 30 PAGE 2
EXECUTIVE CONTROL OPERATION INCREM MAIN TIME INCREMENT = .08 HOURS RECORD ID
460
EXECUTIVE CONTROL OPERATION COMPUT FROM XSECTION 1 TO STRUCTURE 18 RECORD ID 470
STARTING TIME _ .00 RAIN DEPTH = 7.50 RAIN DURATION= 1.00 RAIN TABLE NO.= 2 ANT. MOIST. COND= 2
ALTERNATE NO.= 1 STORM NO.= 1 MAIN TIME INCREMENT = .08 HOURS
PERATION RUNOFF CROSS SECTION 1
OUTPUT HYDROGRAPH= 1
AREA= .24 SQ MI INPUT RUNOFF CURVE= 90. TIME OF CONCENTRATION= .25 HOURS
INTERNAL HYDROGRAPH TIME INCREMENT= _0333 Hot1Rs
IME(HRS)
2.40
3.20
4.00
4.80
5.60
6.40
7.20
8.00
8.80
9.60
10.40
11.20
12.00
12.80
13.60
14.40
15.20
16.00
16.80
17.60
18.40
19.20
20.00
20.80
21.60
22.40
23.20
PEAK TIME(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET)
12.04 1048.00 (RUNOFF)
16.44 27.28 (RUNOFF)
17.64 22.74 (RUNOFF)
19.64 18.21 (RUNOFF)
23.64 13.68 (RUNOFF)
FIRST HYDROGRAPH POINT = .00 HOU RS TIME INCR EMENT = .08 HOURS DRAINAGE AREA = .24 SQ.MI.
DISCHG .00 .00 .00 .01 .06 .17 .31 .47 .63 .80
DISCHG .96 1.12 1.28 1.43 1.58 1.73 1.88 2.03 2.28 2.70
DISCHG 3.13 3.45 3.72 3.97 4.20 4.42 4.63 4.84 5.04 5.24
DISCHG 5.43 5.62 5.80 5.98 6.16 6.34 6.50 6.67 6.83 6.99
DISCHG 7.15 7.30 7.45 7.60 7.74 7.89 8.24 9.05 9.84 10.34
DISCHG 10.68 10.93 11.15 11.35 11.54 11.72 11.89 12.06 12.22 12.38
DISCHG 12.54 12.70 12.85 13.00 13.14 13.28 13.42 13.56 13.69 13.82
DISCHG 13.95 14.37 15.41 16.43 17.25 18.49 19.68 20.43 20.88 21.19
DISCHG 21.43 21.65 21.84 22.11 22.99 24.29 25.21 25.75 26.10 26.40
DISCHG 27.14 28.52 29.64 30.27 30.68 30.98 31.59 32.93 34.24 35.57
DISCHG 38.16 40.78 42.92 46.85 51.08 54.10 58.27 62.92 66.22 70.38
DISCHG 75.42 79.19 84.71 92.59 101.23 152.38 264.96 359.40 500.13 769.61
DISCHG 1004.53 1019.35 748.80 462.49 312.83 225.23 173.37 145.99 127.58 114.58
DISCHG 107.05 99.11 90.50 85.04 79.81 74.11 70.44 67.19 63.42 60.81
DISCHG 58.27 54.64 51.96 50.16 48.14 46.59 45.41 43.64 42.12 41.01
DISCHG 39.34 37.78 36.70 35.07 33.40 32.47 32.07 31.88 31.80 31.77
DISCHG 31.76 31.66 30.82 29.28 28.17 27.65 27.42 27.32 27.27 27.25
DISCHG 27.24 27.24 27.24 27.24 27.25 27.25 27.25 27.02 25.76 24.26
DISCHG 23.41 23.03 22.86 22.78 22.75 22.73 22.73 22.73 22.73 22.73
DISCHG 22.73 22.73 22.71 22.12 20.64 19.34 18.72 18.43 18.30 18.24
DISCHG 18.21 18.20 18.20 18.20 18.20 18.20 18.20 18.20 18.20 18.20
DISCHG 18.21 18.21 18.21 18.21 18.21 18.21 18.21 18.18 17.60 16.11
DISCHG 14.81 14.19 13.90 13.77 13.71 13.68 13.67 13.66 13.66 13.66
DISCHG 13.67 13.67 13.67 13.67 13.67 13.67 13.67 13.67 13.67 13.67
DISCHG 13.67 13.67 13.67 13.67 13.67 13.67 13.67 13.67 13.67 13.67
DISCHG 13.67 13.67 13.68 13.68 13.68 13.68 13.68 13.68 13.68 13.68
DISCHG 13.68 13.68 13.68 13.68 13.68 13.68 13.68 13.65 13.07 11.58
CI

TR20 XEQ 6/24/99 GRANDOVER (WEST) COMMERCIAL- POST-DEV. W/PONDS 100 YR, 06/22/99 20 JOB 1 PASS 1
REV 09/01/83 30 PAGE 3
RUNOFF VOLUME ABOVE BASEFLOW = 6.29 WA TERSHED INCHES, 974.44 CFS-HRS, 80.53 ACRE- FEET; BASEFLOW = .00 CFS
O PERATION RESVOR STRUCTURE 16
INPUT HY DROGRAPH= 1 OUTPUT HYDROGR APH= 2
SURFACE ELEVATION= 795.50
PEA
K TIM E(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATI ON(FEET)
12.14 857.54 800.80
IME(HRS) F IRST HYDROGRAPH POINT = .00 HOURS TIME INCR EMENT = .08 HOURS DRAINAGE AREA = .24 SQ.MI.
3.20 DISCHG .00 .01 .01 .01 .01 .01 .02 .02 .02 .02
3.20 ELEV 795.50 795.51 795.51 795.51 795.52 795.52 795.53 795.53 795.54 795.54
4.00 DISCHG .03 .03 .04 .04 .05 .05 .06 .07 .07 .08
4.00 ELEV 795.55 795.56 795.56 795.57 795.58 795.59 795.60 795.61 795.62 795.64
4.80 DISCHG .09 .10 .10 .11 .12 .13 .14 .15 .15 .16
4.80 ELEV 795.65 795.66 795.67 795.69 795.70 795.71 795.73 795.74 795.76 795.77
5.60 DISCHG .17 .18 .19 .20 .21 .22 .23 .25 .26 .27
5.60 ELEV 795.79 795.81 795.82 795.84 795.86 795.87 795.89 795.91 795.93 795.95
6.40
6.40 DISCHG
ELEV .29
795.98 .30
796.00 .31
796.03 .31
796.05 .32
796.07 .32
796.10 .33
796.13 .33
796.15 .34
796.18 .34
796.20
7.20 DISCHG .35 .35 .36 .37 .37 .38 .38 .39 .40 .40
7.20 ELEV 796.23 796.26 796.29 796.32 796.34 796.37 796.40 796.43 796.46 796.49
8.00 DISCHG .41 .42 .42 .43 .44 .44 .45 .46 .47 .48
8.00 ELEV 796.52 796.55 796.58 796.62 796.65 796.69 796.73 796.78 796.82 796.87
8.80 DISCHG .49 .50 .51 .52 .99 4.45 7.54 10.28 12.67 14.74
8.80 ELEV 796.92 796.96 797.01 797.06 797.11 797.15 797.19 797.23 797.26 797.29
9.60 DISCHG 16.57 18.29 19.93 21.46 22.84 24.06 25.16 26.24 27.36 28.51
9.60 ELEV 797.31 797.33 797.36 797.38 797.39 797.41 797.42 797.44 797.45 797.47
10.40 DISCHG 29.79 31.50 34.27 37.11 40.28 43.57 46.95 50.60 54.34 58.07
a 10.40 ELEV 797.48 797.50 797.52 797.54 797.56 797.59 797.61 797.64 797.66 797.69
11.20 DISCHG 62.04 66.12 70.36 75.25 81.05 93.29 129.61 191.12 281.90 432.03
11.20 ELEV 797.72 797.74 797.77 797.81 797.85 797.93 798.14 798.46 798.86 799.42
12.00 DISCHG 635.78 819.57 851.09 731.17 566.44 436.13 332.36 263.71 214.78 181.29
12.00 ELEV 800.13 800.68 800.78 800.41 799.90 799.43 799.06 798.78 798.57 798.41
12.80 DISCHG 157.55 139.20 124.24 111.95 102.24 95.47 89.27 83.80 78.85 74.37
12.80
13.60 ELEV
DISCHG 798.28
70.40 798.19
66.67 798.11
63.09 798.05
59.87 797.99
57.01 797.95
54.43 797.90
52.17 797.87
50.13 797.83
48.19 797.80
46.42
13.60 ELEV 797.77 797.75 797.72 797.70 797.68 797.66 797.65 797.63 797.62 797.61
14.40 DISCHG 44.75 43.09 41.53 40.02 38.47 36.99 35.73 34.72 33.95 33.37
14.40 ELEV 797.60 797.58 797.57 797.56 797.55 797.54 797.53 797.53 797.52 797.52
15.20 DISCHG 32.94 32.61 32.25 31.66 30.91 30.45 30.01 29.60 29.25 28.95
15.20 ELEV 797.51- 797.51 797.51 797.50 797.50 797.49 797.49 797.48 797.48 797.47
16.00 DISCHG 28.69 28.47 28.28 28.12 27.99 27.88 27.78 27.68 27.48 27.11
16.00 ELEV 797.47 797.47 797.46 797.46 797.46 797.46 797.46 797.46 797.45 797.45
16.80 DISCHG 26.61 26.09 25.61 25.19 24.82 24.50 24.23 24.00 23.81 23.64
16.80
17.60 ELEV
DISCHG 797.44
23.50 797.44
23.39 797.43
23.28 797.42
23.15 797.42
22.88 797.42
22.44 797.41
21.92 797.41
21.41 797.41
20.95 797.40
20.54
17.60 ELEV 797.40 797.40 797.40 797.40 797.39 797.39 797.38 797.37 797.37 797.36

I
TR20 XEQ
6/24/99
GRANDOVER
(WEST) COMMERCIAL-POST-DEV. W/PONDS 100
YR, 06/22/99 20
JOB 1 PASS 1
REV 09/01/83 30 PAGE 4
18.40 DISCHG 20.18 19.88 19.63 19.41 19.22 19.07 18.94 18.82 18.73 18.65
18.40 ELEV 797.36 797.35 797.35 797.35 797.35 797.34 797.34 797.34 797.34 797.34
19.20 DISCHG 18.58 18.52 18.48 18.43 18.40 18.37 18.35 18.32 18.26 18.04
19.20 ELEV 797.34 797.34 797.34 797.34 797.33 797.33 797.33 797.33 797.33 797.33
20.00 DISCHG 17.65 17.17 16.69 16.26 15.87 15.54 15.25 15.01 14.81 14.63
20.00 ELEV 797.33 797.32 797.31 797.31 797.30 797.30 797.29 797.29 797.29 797.29
20.80 DISCHG 14.49 14.36 14.25 14.16 14.09 14.02 13.97 13.92 13.88 13.85
20.80 ELEV 797.28 797.28 797.28 797.28 797.28 797.28 797.28 797.28 797.28 797.28
21.60 DISCHG 13.82 13.80 13.78 13.76 13.75 13.74 13.73 13.72 13.71 13.71
21.60 ELEV 797.27 797.27 797.27 797.27 797.27 797.27 797.27 797.27 797.27 797.27
22.40 DISCHG 13.70 13.70 13.69 13.69 13.69 13.69 13.69 13.68 13.68 13.68
22.40 ELEV 797.27 797.27 797.27 797.27 797.27 797.27 797.27 797.27 797.27 797.27
23.20 DISCHG 13.68 13.68 13.68 13.68 13.68 13.68 13.68 13.68 13.63 13.43
23.20 ELEV 797.27 797.27 797.27 797.27 797.27 797.27 797.27 797.27 797.27 797.27
RUNOFF VOLUME ABOVE BASEFLOW = 5.88 WA TERSHED INCHES, 911.38 CFS-HRS, 75 .32 ACRE-FEE T; BASEFLOW = .00 CFS
10PERATION REACH CROSS SECTION 3
INPUT HY DROGRAPH= 2 OUTPUT HYDROGRAPH= 3
LENGTH = 1350.00 FEET INPUT = COEFFICIENTS RELATED TO CROSS SECTIONAL AREA, X= 1.60, M= 1.45
MODIFIED ATT-KIN ROUT ING COEFFICIENT = 1.00 PEAK TRAVEL TIME _ .00 HOURS
*** WARNING REACH 3 ATT-KIN COEFF.(C) GREATER THAN 0.667, CONSIDER REDUCING MAIN TIME INCREMENT ***
PEAK TIME(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET)
12.14 857.54 (NULL)
IME(HRS) FIR ST HYDROGR APH POINT = .00 HOURS TIME INCREMENT = .08 HOURS DRAINAGE AREA = .24 SQ.MI.
3.20 DISCHG .00 .01 .01 .01 .01 .01 .02 .02 .02 .02
4.00 DISCHG .03 .03 .04 .04 .05 .05 .06 .07 .07 .08
4.80 DISCHG .09 .10 .10 .11 .12 .13 .14 .15 .15 .16
5.60 DISCHG .17 .18 .19 .20 .21 .22 .23 .25 .26 .27
6.40 DISCHG .29 .30 .31 .31 .32 .32 .33 .33 .34 .34
7.20 DISCHG .35 .35 .36 .37 .37 .38 .38 .39 .40 .40
8.00 DISCHG .41 .42 .42 .43 .44 .44 .45 .46 .47 .48
8.80 DISCHG .49 .50 .51 .52 .99 4.45 7.54 10.28 12.67 14.74
9.60 DISCHG 16.57 18.29 19.93 21.46 22.84 24.06 25.16 26.24 27.36 28.51
10.40 DISCHG 29.79 31.50 34.27 37.11 40.28 43.57 46.95 50.60 54.34 58.07
11.20 DISCHG 62.04 66.12 70.36 75.25 81.05 93.29 129.61 191.12 281.90 432.03
12.00 DISCHG 635.78 819.57 851.09 731.17 566.44 436.13 332.36 263.71 214.78 181.29
12.80 DISCHG 157.55 139.20 124.24 111.95 102.24 95.47 89.27 83.80 78.85 74.37
13.60 DISCHG 70.40 66.67 63.09 59.87 57.01 54.43 52.17 50.13 48.19 46.42
14.40 DISCHG 44.75 43.09 41.53 40.02 38.47 36.99 35.73 34.72 33.95 33.37
15.20 DISCHG 32.94 32.61 32.25 31.66 30.91 30.45 30.01 29.60 29.25 28.95
16.00 DISCHG 28.69 28.47 28.28 28.12 27.99 27.88 27.78 27.68 27.48 27.11
16.80 DISCHG 26.61 26.09 25.61 25.19 24.82 24.50 24.23 24.00 23.81 23.64
17.60 DISCHG 23.50 23.39 23.28 23.15 22.88 22.44 21.92 21.41 20.95 20.54
18.40 DISCHG 20.18 19.88 19.63 19.41 19.22 19.07 18.94 18.82 18.73 18.65
19.20 DISCHG 18.58 18.52 18.48 18.43 18.40 18.37 18.35 18.32 18.26 18.04
TR20 XEQ 6/24/99 GRANDOVER (WEST) COMMERCIAL-POST-DEV. W/PONDS 100 YR, 06/22/99 20 JOB 1 PASS 1
REV 09/01/83 30 PAGE 5
20.00 DISCHG 17.65 17.17 16.69 16.26 15.87 15.54 15.25 15.01 14.81 14.63
20.80 DISCHG 14.49 14.36 14.25 14.16 14.09 14.02 13.97 13.92 13.88 13.85
21.60 DISCHG 13.82 13.80 13.78 13.76 13.75 13.74 13.73 13.72 13.71 13.71
22.40 DISCHG 13.70 13.70 13.69 13.69 13.69 13.69 13.69 13.68 13.68 13.68
23.20 DISCHG 13.68 13.68 13.68 13.68 13.68 13.68 13.68 13.68 13.63 13.43
RUNOFF VOLUME ABOVE BASEFLOW = 5.88 WA TERSHED INCHES, 911.38 CFS-HR S, 75 .32 ACRE-F EET; BASEFLOW = .00 CFS
OPERATION RUNOFF CROSS SECTION 4
OUTPUT HYDROGRAPH= 4
AREA= .03 SQ MI INPUT RUN OFF CURVE= 90. T IME OF CONCEN TRATION= .23 HOU RS
INTERNA L HYDROGRAPH TIME INCRE MENT= .0307 HOURS
PEAK TI ME(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET)
12.03 110.75 (RUNOFF )
TIME(HRS) FIRST HYDROGRAPH POINT = .00 HOURS TIME INCREMENT = .08 HOURS DRAINAGE AREA = .03 SQ.MI.
2.40 DISCHG .00 .00 .00 .00 .01 .02 .04 .05 .07 .09
3.20 DISCHG .10 .12 .14 .15 .17 .18 .20 .21 .24 .29
4.00 DISCHG 33 .37 .39 .42 .44 .46 .49 .51 53 55
4.80 DISCHG .57 .59 .61 .63 .65 .66 .68 .70 .
.72 .
.73
5.60 DISCHG .75 .76 .78 .79 .81 .83 .87 .96 1.04 1.09
6.40 DISCHG 1.12 1.14 1.17 1.19 1.21 1.22 1.24 1.26 1.28 1.29
7.20 DISCHG 1.31 1.33 1.34 1.36 1.37 1.39 1.40 1.42 1.43 1.44
8.00 DISCHG 1.46 1.51 1.63 1.73 1.81 1.95 2.08 2.14 2.19 2.21
8.80 DISCHG 2.24 2.26 2.28 2.31 2.41 2.55 2.64 2.69 2.73 2.76
9.60
10.40 DISCHG
DISCHG 2.84
4.03 3.00
4.30 3.11
4.52 3.17
4.96 3.21
5.40 3.23
5.70 3.30
6.16 3.46
6.65 3.59
6.96 3.73
7.42
11.20 DISCHG 7.95 8.31 8.94 9.81 10.68 17.14 29.84 39.04 54.82 85.73
12.00 DISCHG 108.56 106.58 73.15 43.54 29.71 21.55 16.75 14.45 12.78 11.61
12.80 DISCHG 11.02 10.15 9.25 8.75 8.19 7.61 7.27 6.93 6.52 6.28
13.60 DISCHG 6.00 5.62 5.36 5.19 4.97 4.82 4.70 4.51 4.36 4.25
14.40 DISCHG 4.06 3.90 3.80 3.62 3.45 3.37 3.33 3.32 3.31 3.31
15.20 DISCHG 3.31 3.30 3.19 3.02 2.91 2.87 2.85 2.84 2.84 2.84
13 16.00 DISCHG 2.84 2.84 2.84 2.84 2.84 2.84 2.84 2.81 2.66 2.50
16.80 DISCHG 2.42 2.39 2.38 2.37 2.37 2.37 2.37 2.37 2.37 2.37
17.60
18.40 DISCHG
DISCHG 2.37
1.90 2.37
1.90 2.37
1.90 2.29
1.90 2.12
1.90 1.99
1.90 1.94
1.90 1.91
1.90 1.90
1.90 1.90
1.90
19.20 DISCHG 1.90 1.90 1.90 1.90 1.90 1.90 1.90 1.89 1.82 1.65
20.00 DISCHG 1.52 1.46 1.44 1.43 1.43 1.42 1.42 1.42 1.42 1.42
20.80 DISCHG 1.42 1.42 1.42 1.42 1.42 1.42 1.42 1.42 1.42 1.42
21.60 DISCHG 1.42 1.42 1.42 1.42 1.42 1.42 1.42 1.42 1.42 1.42
22.40 DISCHG 1.42 1.42 1.42 1.42 1.42 1.42 1.42 1.42 1.42 1.42
23.20 DISCHG 1.42 1.42 1.42 1.43 1.43 1.43 1.43 1.42 1.35 1.18
RUNOFF VOLUME ABOVE BASEFLOW = 6.30 WAT ERSHED INCHES, 1 01.59 CFS-HRS , 8. 40 ACRE-FE ET; BASEFLOW = :00 CFS
RPERATIO U
TU
17
N RESVOR C
RE
STR

C
L
TR20 XEQ 6/24/99 GRANDOVER (WEST) COMMERCIAL-POST-DEV. W/PONDS 100 YR, 06/22/99 20 JOB 1 PASS 1
REV 09/01/83 30 PAGE 6
INPUT HY DROGRAPH= 4 OUTPUT HYDROGRAPH= 5
SURFACE ELEVATION= 814.00
PEAK TIM E(IRS) PEAK DISCHARGE(CFS) PEAK ELEVATI ON(FEET)
12.12 90.63 817.76
TIME(HRS) F IRST HYDROGRAPH POINT = .00 HOURS TIME INCR EMENT = .08 HOURS DRAINAGE AREA = .03 SQ.MI.
3.20 DISCHG .00 .00 .00 .00 .00 .00 .00 .00 .01 .01
3.20 ELEV 814.00 814.00 814.00 814.00 814.00 814.00 814.00 814.00 814.02 814.02
4.00 DISCHG .01 .01 .01 .01 .01 .01 .01 .02 .02 .02
4.00 ELEV 814.03 814.03 814.04 814.04 814.05 814.05 814.06 814.07 814.07 814.08
4.80 DISCHG .02 .02 .02 .03 .03 .03 .03 .03 .04 .04
4.80 ELEV 814.09 814.09 814.10 814.11 814.12 814.13 814.13 814.14 814.15 814.16
5.60 DISCHG .04 .04 .05 .05 .05 .05 .05 .06 .06 .06
5.60 ELEV 814.17 814.18 814.19 814.20 814.21 814.22 814.23 814.24 814.25 814.27
6.40 DISCHG .07 .07 .07 .08 .08 .08 .09 .09 .10 .10
6.40 ELEV 814.28 814.29 814.31 814.32 814.34 814.35 814.37 814.38 814.40 814.41
7.20 DISCHG .10 .11 .11 .11 .12 .12 .13 .13 .13 .14
7.20 ELEV 814.43 814.44 814.46 814.48 814.49 814.51 814.53 814.54 814.56 814.58
8.00 DISCHG .14 .15 .15 .16 .16 .17 .17 .18 .18 .19
8.00
8.80 ELEV
DISCHG 814.59
.20 814.61
.20 814.63
.21 814.65
.22 814.67
.22 814.69
.23 814.72
.24 814.74
.24 814.77
.25 814.79
.25
8.80 ELEV 814.82 814.85 814.88 814.90 814.93 814.96 814.99 815.02 815.05 815.08
9.60 DISCHG .25 .25 .26 .26 .27 .27 .27 .28 .28 .28
9.60 ELEV 815.11 815.15 815.18 815.21 815.25 815.29 815.32 815.36 815.40 815.44
10.40 DISCHG .29 .29 .30 .30 .31 1.20 2.03 2.80 3.51 4.16
10.40 ELEV 815.49 815.53 815.58 815.64 815.70 815.75 815.80 815.85 815.89 815.93
11.20 DISCHG 4.78 5.47 6.47 7.39 8.30 10.09 14.35 20.73 30.99 47.16
11.20 ELEV 815.97 816.01 816.04 816.06 816.09 816.15 816.27 816.47 816.70 817.04
12.00 DISCHG 70.91 88.33 89.06 74.47 56.49 42.29 32.97 25.97 21.17 18.32
12.00 ELEV 817.43 817.72 817.73 817.49 817.19 816.94 816.74 816.59 816.48 816.39
12.80 DISCHG 16.09 14.34 12.86 11.64 10.63 9.76 9.02 8.41 7.88 7.41
12.80 ELEV 816.33 816.27 816.23 816.19 816.16 816.14 816.11 816.10 816.08 816.06
13.60 DISCHG 7.00 6.62 6.26 5.95 5.67 5.43 5.23 5.12 5.00 4.88
13.60 ELEV 816.05 816.04 816.03 816.02 816.01 816.01 816.00 815.99 815.98 815.98
14.40 DISCHG 4.75 4.62 4.48 4.34 4.20 4.06 3.93 3.83 3.74 3.66
14.40 ELEV 815.97 815.96 815.95 815.94 815.94 815.93 815.92 815.91 815.91 815.90
15.20
15.20 DISCHG
ELEV 3.60
815.90 3.55
815.90 3.49
815.89 3.42
815.89 3.34
815.88 3.26
815.88 3.19
815.87 3.13
815.87 3.08
815.87 3.04
815.87
16.00 DISCHG 3.00 2.97 2.95 2.93 2.91 2.90 2.89 2.88 2.85 2.80
16.00 ELEV 815.86 815.86 815.86 815.86 815.86 815.86 815.86 815.86 815.85 815.85
16.80 DISCHG 2.74 2.68 2.63 2.59 2.55 2.52 2.49 2.47 2.45 2.44
16.80 ELEV 815.85 815.84 815.84 815.84 815.84 815.83 815.83 815.83 815.83 815.83
17.60 DISCHG 2.42 2.41 2.41 2.39 2.36 2.31 2.25 2.19 2.14 2.10
17.60 ELEV 815.83 815.83 815.83 815.83 815.82 815.82 815.82 815.81 815.81 815.81
18.40 DISCHG 2.06 2.03 2.01 1.99 1.97 1.96 1.95 1.94 1.93 1.92
18.40 ELEV 815.81 815.80 815.80 815.80 815.80 815.80 815.80 815.80 815.80 815.80
19.20
19.20 DISCHG
ELEV 1.92
815.80 1.92
815.80 1.91
815.80 1.91
815.80 1.91
815.80 1.91
815.80 1.90
815.80 1.90
815.80 1.89
815.80 1.87
815.79
20.00 DISCHG 1.82 1.76 1.71 1.66 1.62 1.58 1.55 1.53 1.51 1.50

0

TR20 XEO 6/24/99 GRANDOVER (WEST) COMMERCIAL-POST-DEV. W/PONDS 100 YR, 06/22/99 20 JOB 1 PASS 1
REV 09/01/83 30 PAGE 7
20.00 ELEV 815.79 815.79 815.78 815.78 815.78 815.78 815.78 815.77 815.77 815.77
20.80 DISCHG 1.48 1.47 1.46 1.46 1.45 1.45 1.44 1.44 1.44 1.43
20.80 ELEV 815.77 815.77 815.77 815.77 815.77 815.77 815.77 815.77 815.77 815.77
21.60
21.60 DISCHG
ELEV 1.43
815.77 1.43
815.77 1.43
815.77 1.43
815.77 1.43
815.77 1.43
815.77 1.43
815.77 1.43
815.77 1.43
815.77 1.43
815.77
22.40 DISCHG 1.43 1.43 1.43 1.43 1.42 1.42 1.42 1.42 1.42 1.42
22.40 ELEV 815.77 815.77 815.77 815.77 815.77 815.77 815.77 815.77 815.77 815.77
23.20 DISCHG 1.42 1.42 1.42 1.42 1.42 1.42 1.42 1.42 1.42 1.39
23.20 ELEV 815.77 815.77 815.77 815.77 815.77 815.77 815.77 815.77 815.77 815.77
0 RUNOFF VOLUME ABOVE BASEFLOW = 5.60 WATERSHED INCHES, 90.33 CFS-HRS, 7.47 ACRE-FEET; BASEFLOW = .00 CFS
OPERATION REACH CROSS SECTION 6
r7a
INPUT HYDROGRAPH= 5 OUTPUT HYDROGRAPH= 6
LENGTH = 800.00 FEET INPUT = COEFFICIENTS RELATED TO CROSS SECTIONAL AREA, X= 1.60, M= 1.44
MODIFIED ATT-KIN ROUTING COEFFICIENT = 1.00 PEAK TRAVEL TIME = .00 HOURS
*** WARNING REACH 6 ATT-KIN COEFF.(C) GREATER THAN 0.667, CONSIDER REDUCING MAIN TIME INCREMENT ***
u PEAK TIME(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET)
12.12 90.63 (NULL)
IME(HRS) FIRST HYDROGRAPH POINT = .00 HOURS TIME INCREMENT = .08 HOURS DRAINAGE AREA = .03 SQ.MI.
3.20 DISCHG .00 .00 .00 .00 .00 .00 .00 .00 .01 .01
4.00 DISCHG .01 .01 .01 .01 .01 .01 .01 .02 .02 .02
4.80 DISCHG .02 .02 .02 .03 .03 .03 .03 .03 .04 .04
5.60 DISCHG .04 .04 .05 .05 .05 .05 .05 .06 .06 .06
6.40 DISCHG .07 .07 .07 .08 .08 .08 .09 .09 .10 .10
7.20
8.00 DISCHG
DISCHG 10
.14 .11
.15 .11
.15 .11
.16 .12
.16 .12
.17 .13
.17 .13
.18 .13
.18 .14
.19
8.80 DISCHG .20 .20 .21 .22 .22 .23 .24 .24 .25 .25
9.60 DISCHG .25 .25 .26 .26 .27 .27 .27 .28 .28 .28
10.40 DISCHG .29 .29 .30 .30 .31 1.20 2.03 2.80 3.51 4.16
11.20 DISCHG 4.78 5.47 6.47 7.39 8.30 10.09 14.35 20.73 30.99 47.16
12.00 DISCHG 70.91 88.33 89.06 74.47 56.49 42.29 32.97 25.97 21.17 18.32
12.80 DISCHG 16.09 14.34 12.86 11.64 10.63 9.76 9.02 8.41 7.88 7.41
13.60 DISCHG 7.00 6.62 6.26 5.95 5.67 5.43 5.23 5.12 5.00 4.88
14.40 DISCHG 4.75 4.62 4.48 4.34 4.20 4.06 3.93 3.83 3.74 3.66
15.20 DISCHG 3.60 3.55 3.49 3.42 3.34 3.26 3.19 3.13 08
3 3
04
D 16.00 DISCHG 3.00 2.97 2.95 2.93 2.91 2.90 2.89 2.88 .
2.85 .
2.80
16.80 DISCHG 2.74 2.68 2.63 2.59 2.55 2.52 2.49 2.47 2.45 2.44
17.60 DISCHG 2.42 2.41 2.41 2.39 2.36 2.31 2.25 2.19 2.14 2.10
18.40 DISCHG 2.06 2.03 2.01 1.99 1.97 1.96 1.95 1.94 1.93 1.92
19.20 DISCHG 1.92 1.92 1.91 1.91 1.91 1.91 1.90 1.90 1.89 1.87
20.00 DISCHG 1.82 1.76 1.71 1.66 1.62 1.58 1.55 1.53 1.51 1.50
20.80 DISCHG 1.48 1.47 1.46 1.46 1.45 1.45 1.44 1.44 1.44 1.43
21.60 DISCHG 1.43 1.43 1.43 1.43 1.43 1.43 1.43 1.43 1.43 1.43
22.40 DISCHG 1.43 1.43 1.43 1.43 1.42 1.42 1.42 1.42 1.42 1.42
23.20 DISCHG 1.42 1.42 1.42 1.42 1.42 1.42 1.42 1.42 1.42 1.39
TR20 XEO 6/24/99 GRANDOVER (WEST) COMMERCIAL-POST-DEV. W/PONDS 100 YR, 06/22/99 20 JOB 1 PASS 1
REV 09/01/83 30 PAGE 8
RUNOFF VOLUME ABOVE BASEFLOW = 5.60 WATERSHED INCHES, 90.33 CFS-HRS, 7.47 ACRE-FEET; BASEFLOW = .00 CFS
OPERATION RUNOFF CROSS SECTION 7
OUTPUT HYDROGRAPH= 7
AREA= .03 SO MI INPUT RUNOFF CURVE= 85. TIME OF CONCENTRATION= .17 HOURS
INTERNAL HYDROGRAPH TIME INCREMENT= .0227 HOURS
PEAK TIME(HRS)
PEAK DISCHARGE(CFS)
134.73
PEAK ELEVATION(FEET)
(RUNOFF)
12.00
I ME(HRS) FIRST HYDROGRAPH POINT
4.00 DISCHG .00 .01
4.80 DISCHG .21 .23
5.60 DISCHG .42 .43
6.40 DISCHG .75 .78
7.20 DISCHG .99 1.01
8.00 DISCHG 1.18 1.26
8.80 DISCHG 1.94 1.97
9.60 DISCHG 2.66 2.83
10.40 DISCHG 4.05 4.27
11.20 DISCHG 8.33 8.65
12.00 DISCHG 134.72 114.13
12.80 DISCHG 12.37 11.05
13.60 DISCHG 6.74 6.27
14.40 DISCHG 4.59 4.46
15.20 DISCHG 3.86 3.84
16.00 DISCHG 3.31 3.31
16.80 DISCHG 2.79 2.77
17.60 DISCHG 2.77 2.77
18.40 DISCHG 2.22 2.22
19.20 DISCHG 2.22 2.22
20.00 DISCHG 1.71 1.68
20.80 DISCHG 1.67 1.67
21.60 DISCHG 1.67 1.67
22.40 DISCHG 1.67 1.67
23.20 DISCHG 1.67 1.67
RUNOFF VOLUME ABOVE BASEFLOW = 5.72 WATERSHED INCHES, 110.83 CFS-HRS, 9.16 ACRE-FEET; BASEFLOW = .00 CFS
1PERATION ADDHYD CROSS SECTION 8
INPUT HYDROGRAPHS= 7,6 OUTPUT HYDROGRAPH= 5
**ELEVATION OUTPUT OPTION REQUESTED BUT NO ELEVATIONS GIVEN'
PEAK TIME(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET)
12.03 209.85 (NULL)
.00 HOURS TIME INCREMENT = .08 HOURS DRAINAGE AREA = .03 SQ.MI.
.03 .05 .08 .10 .12 .15 .17 .19
.26 .28 .30 .32 .34 .36 .38 .40
.45 .47 .49 .51 .56 .64 .69 .73
.80 .83 .85 .87 .90 .92 .94 .96
1.03 1.05 1.07 1.09 1.11 1.13 1.14 1.16
1.39 1.46 1.55 1.70 1.80 1.85 1.88 1.91
2.00 2.04 2.20 2.34 2.40 2.45 2.48 2.52
2.92 2.97 3.01 3.05 3.16 3.36 3.47 3.66
4.52 5.13 5.50 5.77 6.42 6.87 7.14 7.80
9.63 10.58 11.63 23.83 39.21 46.44 74.23 116.09
59.02 34.65 25.61 19.04 16.28 15.11 13.63 12.85
10.20 9.84 9.06 8.47 8.24 7.76 7.32 7.16
6.10 5.89 5.63 5.53 5.37 5.11 4.99 4.86
4.35 4.07 3.92 3.87 3.86 3.86 3.86 3.86
3.62 3.41 3.34 3.32 3.31 3.31 3.31 3.31
3.31 3.31 3.31 3.32 3.32 3.25 2.98 2.83
2.77 2.77 2.77 2.77 2.77 2.77 2.77 2.77
2.77 2.61 2.36 2.26 2.23 2.22 2.22 2.22
2.22 2.22 2.22 2.22 2.22 2.22 2.22 2.22
2.22 2.22 2.22 2.22 2.22 2.22 2.06 1.81
1.67 1.67 1.67 1.67 1.67 1.67 1.67 1.67
1.67 1.67 1.67 1.67 1.67 1.67 1.67 1.67
1.67 1.67 1.67 1.67 1.67 1.67 1.67 1.67
1.67 1.67 1.67 1.67 1.67 1.67 1.67 1.67
1.67 1.67 1.67 1.67 1.67 1.67 1.51 1.26

I
TR20 XEQ 6/24/99 GRANDOVER (WEST) COMMERCIAL-POST-DEV. W/PONDS 100 YR, 06/22/99 20 JOB 1 PASS 1
REV 09/01/83 30 PAGE 9
TIME(HRS) FIRST HYDROGRAPH POINT = .00 HOURS TIME INCREMENT = .08 HOURS DRAINAGE AREA = .05 SQ.MI.
3.20 DISCHG .00 .00 .00 .00 .00 .00 .00 .00 .01 .01
4.00 DISCHG .01 .02 .04 .06 .09 .11 .14 .16 .19 .21
4.80 DISCHG .23 .26 .28 .30 .33 .35 .37 .39 .41 .44
5.60 DISCHG .46 .48 .50 .52 .54 .56 .61 .70 .75 .79
6.40 DISCHG .82 .85 .88 .91 .93 .96 .99 1.01 1.04 1.06
7.20 DISCHG 1.09 1.11 1.14 1.16 1.19 1.21 1.23 1.26 1.28 1.30
8.00 DISCHG 1.32 1.40 1.54 1.62 1.71 1.87 1.97 2.02 2.07 2.10
8.80 DISCHG 2.14 2.18 2.21 2.26 2.43 2.57 2.64 2.69 2.73 2.77
9.60 DISCHG 2.91 3.09 3.17 3.23 3.27 3.31 3.43 3.64 3.75 3.94
10.40 DISCHG 4.34 4.56 4.81 5.43 5.81 6.97 8.45 9.67 10.65 11.96
11.20 DISCHG 13.12 14.12 16.10 17.98 19.93 33.91 53.56 67.17 105.22 163.26
12.00 DISCHG 205.63 202.46 148.08 109.11 82.10 61.33 49.25 41.08 34.80 31.16
12.80 DISCHG 28.46 25.39 23.07 21.48 19.69 18.23 17.27 16.17 15.20 14.57
13.60 DISCHG 13.75 12.90 12.36 11.84 11.30 10.96 10.61 10.23 10.00 9.74
14.40 DISCHG 9.34 9.07 8.83 8.42 8.12 7.93 7.79 7.68 7.59 7.52
15.20 DISCHG 7.45 7.39 7.12 6.84 6.68 6.58 6.51 6.44 6.39 6.35
16.00 DISCHG 6.31 6.29 6.26 6.24 6.23 6.22 6.21 6.12 5.83 5.64
16.80 DISCHG 5.53 5.46 5.40 5.35 5.31 5.28 5.26 5.24 5.22 5.20
17.60 DISCHG 5.19 5.18 5.17 5.00 4.72 4.57 4.48 4.41 4.36 4.31
18.40 DISCHG 4.28 4.25 4.23 4.21 4.19 4.18 4.17 4.16 4.15 4.14
19.20 DISCHG 4.14 4.14 4.13 4.13 4.13 4.13 4.13 4.12 3.95 3.67
20.00 DISCHG 3.53 3.44 3.38 3.33 3.28 3.25 3.22 3.20 3.18 3.16
20.80 DISCHG 3.15 3.14 3.13 3.13 3.12 3.12 3.11 3.11 3.11 3.10
21.60 DISCHG 3.10 3.10 3.10 3.10 3.10 3.10 3.10 3.10 3.10 3.10
22.40 DISCHG 3.10 3.10 3.10 3.10 3.10 3.10 3.10 3.10 3.10 3.10
23.20 DISCHG 3.10 3.10 3.10 3.10 3.10 3.10 3.10 3.09 2.92 2.65
RUNOFF VOLUME ABOVE BASEFLOW = 5.67 WATERSHED INCHES, 201.16 CFS-HRS, 16.62 ACRE-FEET; BASEFLOW = .00 CFS
1PERATION RESVOR STRUCTURE 1
INPUT HYDROGRAPH= 5 OUTPUT HYDROGRAPH= 4
SURFACE ELEVATION= 798.50
PEAK TIME(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET)
12.22 123.80 801.44
IME(HRS) FIRST HYDROGRAPH POINT = .00 HOURS TIME INCREMENT = .08 HOURS DRAINAGE AREA = .05 SQ.MI.
5.60 DISCHG .00 .00 .01 .01 .01 .01 .01 .01 .01 .01
5.60 ELEV 798.50 798.50 798.53 798.53 798.53 798.53 798.54 798.54 798.54 798.55
6.40 DISCHG .01 .01 .01 .01 .01 .01 .02 .02 .02 .02
6.40 ELEV 798.55 798.55 798.56 798.56 798.57 798.57 798.58 798.58 798.58 798.59
7.20 DISCHG .02 .02 .02 .02 .02 .02 .03 .03 .03 .03
7.20 ELEV 798.59 798.60 798.60 798.61 798.62 798.62 798.63 798.63 798.64 798.64
8.00 DISCHG .03 .03 .03 .03 .04 .04 .04 .04 .04 .04
8.00 ELEV 798.65 798.66 798.66 798.67 798.68 798.69 798.70 798.70 798.71 798.72
8.80 DISCHG .05 .05 .05 .05 .06 .06 .06 .06 .06 .07
8.80 ELEV 798.73 798.74 798.75 798.76 798.78 798.79 798.80 798.81 798.82 798.84

0
P-11
TR20 XEO 6/24/99 GRANDOVER (WEST) COMMERCIAL-POST-DEV. W/PONDS 100 YR, 06/22/99 20
REV 09/01/83 30
JOB 1 PASS 1
PAGE 10
9.60
9.60 DISCHG
ELEV .07
798.85 .07
798.86 .08
798.88 .08
798.89 .08
798.91 .08
798.92 .09
798.94 .09
798.95 .09
798.97 .10
798.99
10.40 DISCHG .11 .13 .15 .17 .20 .22 .26 .30 .34 .39
10.40 ELEV 799.01 799.02 799.04 799.06 799.08 799.11 799.14 799.17 799.21 799
25
11.20 DISCHG .45 .51 .57 .65 2.08 5.05 9.69 15.76 27.58 .
46.27
11.20 ELEV 799.30 799.35 799.41 799.47 799.54 799.64 799.78 799.97 800.18 800.50
12.00 DISCHG 77.00 105.96 121.89 123.43 117.04 106.62 94.83 83.43 73.31 64.34
12.00 ELEV 800.91 801.24 801.42 801.44 801.37 801.25 801.12 800.99 800.86 800.74
12.80 DISCHG 56.66 50.05 44.71 40.78 37.24 34.04 31.19 28.66 26.38 24.37
12.80 ELEV 800.64 800.55 800.47 800.41 800.35 800.29 800.24 800.20 800.16 800.13
13.60 DISCHG 22.58 20.96 19.50 18.21 17.05 16.28 15.62 15.00 14.41 13.87
13.60 ELEV 800.10 800.07 800.04 800.02 800.00 799.98 799.96 799.94 799.92 799.91
14.40 DISCHG 13.35 12.85 12.39 11.94 11.50 11.08 10.70 10.34 10.02 9.72
14.40 ELEV 799.89 799.88 799.86 799.85 799.83 799.82 799.81 799.80 799.79 799.78
15.20 DISCHG 9.45 9.21 8.98 8.74 8.50 8.28 8.07 7.88 7.70 7.54
15.20 ELEV 799.77 799.76 799.76 799.75 799.74 799.73 799.73 799.72 799.72 799.71
16.00 DISCHG 7.40 7.27 7.15 7.04 6.94 6.86 6.78 6.71 6.62 6.51
16.00 ELEV 799.71 799.70 799.70 799.70 799.69 799.69 799.69 799.69 799.68 799.68
16.80 DISCHG 6.40 6.29 6.19 6.09 6.00 5.92 5.84 5.77 5.70 5.64
16.80 ELEV 799.68 799.67 799.67 799.67 799.66 799.66 799.66 799.66 799.66 799.65
17.60
17.60 DISCHG
ELEV 5.59
799.65 5.54
799.65 5.50
799.65 5.45
799.65 5.38
799.65 5.29
799.64 5.20
799.64 5.11
799.64 5.02
799.63 4.94
799.63
18.40 DISCHG 4.86 4.79 4.72 4.66 4.61 4.56 4.51 4.47 4.43 4.40
18.40 ELEV 799.63 799.63 799.62 799.62 799.62 799.62 799.62 799.62 799.62 799.61
19.20 DISCHG 4.37 4.34 4.31 4.29 4.27 4.26 4.24 4.23 4.20 4.16
19.20 ELEV 799.61 799.61 799.61 799.61 799.61 799.61 799.61 799.61 799.61 799.61
20.00 DISCHG 4.09 4.02 3.94 3.87 3.81 3.74 3.68 3.62 3.57 3.52
20.00 ELEV 799.61 799.60 799.60 799.60 799.60 799.59 799.59 799.59 799.59 799.59
20.80 DISCHG 3.48 3.44 3.40 3.37 3.34 3.31 3.29 3.27 3.25 3.23
20.80 ELEV 799.59 799.59 799.58 799.58 799.58 799.58 799.58 799.58 799.58 799.58
21.60 DISCHG 3.22 3.20 3.19 3.18 3.17 3.16 3.15 3.15 3.14 3
14
21.60 ELEV 799.58 799.58 799.58 799.58 799.58 799.58 799.58 799.58 799.58 .
799.58
22.40 DISCHG 3.13 3.13 3.12 3.12 3.12 3.11 3.11 3.11 3.11 3.11
22.40 ELEV 799.58 799.58 799.58 799.58 799.58 799.58 799.58 799.58 799.58 799.57
23.20 DISCHG 3.11 3.10 3.10 3.10 3.10 3.10 3.10 3.10 3.09 3.05
23.20 ELEV 799.57 799.57 799.57 799.57 799.57 799.57 799.57 799.57 799.57 799.57
j RUNOFF VOLUME ABOVE BASEFLOW = 5.09 WATERSHED INCHES, 180.83 CFS-HRS, 14.94 ACRE-FEET; BASEFLOW = .00 CFS
OPERATION REACH CROSS SECTION 10
INPUT HYDROGRAPH= 4 OUTPUT HYDROGRAPH= 6
LENGTH = 800.00 FEET INPUT = COEFFICIENTS RELATED TO CROSS SECTIONAL AREA, X= 1.60, M= 1.44
MODIFIED ATT-KIN ROUTING COEFFICIENT = 1.00 PEAK TRAVEL TIME = .00 HOURS
*** WARNING REACH 10 ATT-KIN COEFF.(C) GREATER THAN 0.667, CONSIDER REDUCING MAIN TIME INCREMENT ***
PEAK TIME(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET)
12.22 123.80 (NULL)
0

TR20 XEQ 6/24/99 GRANDOVER (WEST) COMMERCIAL- POST-DEV. W/P ONDS 100 YR, 06/22 /99 20 JOB 1 PASS 1
REV 09/01/83 30 PAGE 11
TIME(HRS) FIRST HYDROGRAPH POINT = .00 HOURS TIME INCREMENT = .08 HOURS DRAINAGE AREA = .05 SQ.MI.
5.60 DISCHG .00 .00 .01 .01 .01 .01 .01 .01 .01 .01
6.40 DISCHG .01 .01 .01 .01 .01 .01 .02 .02 .02 .02
a 7.20 DISCHG .02 .02 .02 .02 .02 .02 .03 .03 .03 .03
8.00 DISCHG .03 .03 .03 .03 .04 .04 .04 .04 .04 .04
8.80 DISCHG .05 .05 .05 .05 .06 .06 .06 .06 .06 .07
9.60 DISCHG .07 .07 .08 .08 .08 .08 .09 .09 .09 .10
a 10.40 DISCHG .11 .13 .15 .17 .20 .22 .26 .30 .34 .39
11.20 DISCHG .45 .51 .57 .65 2.08 5.05 9.69 15.76 27.58 46.27
12.00
12.80 DISCHG
DISCHG 77.00
56.66 105.96
50.05 121.89
44.71 123.43
40.78 117.04
37.24 106.62
34.04 94.83
31.19 83.43
28.66 73.31
26.38 64.34
24.37
13.60 DISCHG 22.58 20.96 19.50 18.21 17.05 16.28 15.62 15.00 14.41 13.87
14.40 DISCHG 13.35 12.85 12.39 11.94 11.50 11.08 10.70 10.34 10.02 9.72
15.20 DISCHG 9.45 9.21 8.98 8.74 8.50 8.28 8.07 7.88 7.70 7.54
16.00 DISCHG 7.40 7.27 7.15 7.04 6.94 6.86 6.78 6.71 6.62 6.51
16.80 DISCHG 6.40 6.29 6.19 6.09 6.00 5.92 5.84 5.77 5.70 5.64
17.60 DISCHG 5.59 5.54 5.50 5.45 5.38 5.29 5.20 5.11 5.02 4.94
18.40 DISCHG 4.86 4.79 4.72 4.66 4.61 4.56 4.51 4.47 4.43 4.40
19.20 DISCHG 4.37 4.34 4.31 4.29 4.27 4.26 4.24 4.23 4.20 4.16
20.00
20.80 DISCHG
DISCHG 4.09
3.48 4.02
3.44 3.94
3.40 3.87
3.37 3.81
3.34 3.74
3.31 3.68
3.29 3.62
3.27 3.57
3.25 3.52
3.23
21.60 DISCHG 3.22 3.20 3.19 3.18 3.17 3.16 3.15 3.15 3.14 3.14
22.40 DISCHG 3.13 3.13 3.12 3.12 3.12 3.11 3.11 3.11 3.11 3.11
23.20 DISCHG 3.11 3.10 3.10 3.10 3.10 3.10 3.10 3.10 3.09 3.05
RUNOFF VOLUME ABOVE BASEFLOW = 5.09 WA TERSHED INC HES, 180.83 CFS-HR S, 14. 94 ACRE-F EET; BASE FLOW = .00 CFS
R
PERATION ADDHYD CROSS SECTION 11
INPUT HYDROGRAPHS= 6,3 OUT PUT HYDROGRAPH= 1
**ELEVATI ON OUTPUT OPTION REQUE STED BUT NO ELEVATIONS GIVEN ***
PEAK TIM E(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATIO N(FEET)
s.•
12.14
976.77
(NULL)
TIME(HRS) F IRST HYDROGRAPH POINT = .00 HOURS TIME INCREMENT = .08 HOURS DRAINAGE AREA = .29 SQ.MI.
3.20
4.00 DISCHG
DISCHG .00
.03 .01
.03 .01
.04 .01
.04 .01
.05 .01
.05 .02
.06 .02
.07 .02
.07 .02
.08
4.80 DISCHG .09 .10 .10 .11 .12 .13 .14 .15 .15 .16
5.60 DISCHG .17 .18 .20 .21 .22 .23 .24 .25 .27 .28
6.40 DISCHG .30 .31 .32 .32 .33 .34 .34 .35 .35 .36
7.20 DISCHG .37 .37 .38 .39 .39 .40 .41 .42 .42 .43
8.00 DISCHG .44 .45 .45 .46 .47 .48 .49 .50 .51 .53
8.80 DISCHG .54 .55 .56 .57 1.05 4.50 7.60 10.34 12.73 14.80
9.60 DISCHG 16.64 18.36 20.01 21.54 22.92 24.14 25.25 26.33 27.46 28.61
10.40 DISCHG 29.90 31.63 34.42 37.28 40.48 43.80 47.21 50.90 54.68 58.47
11.20 DISCHG 62.49 66.63 70.93 75.90 83.12 98.34 139.30 206.87 309.48 478.30
0
I
TR20 XEQ
6/24/99
GRANDOVER
(WEST) COMMERCIAL-POST-DEV. W/PONDS 100
YR, 06/22/99 20
JOB 1 PASS 1
REV 09/01/83 30 PAGE 12
12.00 DISCHG 712.78 925.54 972.98 854.60 683.48 542.75 427.18 347.15 288.10 245.63
12.80 DISCHG 214.21 189.25 168.95 152.73 139.48 129.51 120.46 112.45 105.23 98.74
13.60 DISCHG 92.99 87.63 82.60 78.08 74.05 70.71 67.79 65.13 62.60 60.28
14.40 DISCHG 58.10 55.95 53.91 51.95 49.96 48.07 46.42 45.06 43.97 43.10
15.20 DISCHG 42.40 41.82 41.22 40.39 39.41 38.73 38.07 37.48 36.95 36.49
16.00 DISCHG 36.09 35.73 35.43 35.16 34.93 34.73 34.56 34.39 34.10 33.62
16.80 DISCHG 33.01 32.38 31.80 31.28 30.82 30.42 30.07 29.77 29.51 29.29
17.60 DISCHG 29.09 28.93 28.78 28.60 28.26 27.73 27.12 26.52 25.97 25.48
18.40 DISCHG 25.05 24.67 24.35 24.07 23.83 23.63 23.45 23.29 23.16 23.05
19.20 DISCHG 22.95 22.86 22.79 22.73 22.67 22.63 22.59 22.55 22.46 22.20
20.00
20.80 DISCHG
DISCHG 21.74
17.97 21.19
17.80 20.64
17.66 20.13
17.54 19.68
17.43 19.28
17.34 18.94
17.26 18.64
17.19 18.38
17.13 18.16
17.08
21.60 DISCHG 17.04 17.00 16.97 16.94 16.92 16.90 16.88 16.87 16.85 16.84
22.40 DISCHG 16.83 16.82 16.82 16.81 16.81 16.80 16.80 16.79 16.79 16.79
23.20 DISCHG 16.79 16.79 16.78 16.78 16.78 16.78 16.78 16.78 16.72 16.48
RUNOFF VOLUME ABOVE BASEFLOW = 5.74 WATERSHED INCHES, 10 92.21 CFS-HR S, 90. 26 ACRE-F EET; BASE FLOW = .00 CFS

OPERATION RUNOFF CROSS SECTION 12
OUTPUT HYDROGRAPH= 2
AREA= .10 SQ MI INPUT RUNOFF CURVE= 82. TIME OF CONCEN TRATION= .25 HOURS
INTERNAL HYDROGRAPH TIME INCREMENT= .0333 HOURS
PEAK TIME(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATIO N(FEET)
12.05 390.69 (RUNOFF)
16.44 10.83 (RUNOFF)
17.65 9.04 (RUNOFF)
19.65 7.26 (RUNOFF)
T IME(HRS) FIRST HYDROGR APH POINT = .00 HOU RS TIME INCREMENT = .08 HOURS DRAINAGE AREA = .10 SQ.MI.
4.80 DISCHG .01 .05 .10 .16 .22 .28 .35 .41 .47 .53
5.60 DISCHG .59 .65 .71 .77 .83 .88 .97 1.11 1.26 1.38
6.40 DISCHG 1.47 1.56 1.65 1.73 1.81 1.88 1.96 2.03 2.11 2.18
7.20 DISCHG 2.25 2.32 2.39 2.46 2.53 2.59 2.66 2.73 2.79 2.85
8.00 DISCHG 2.91 3.04 3.30 3.56 3.79 4.11 4.43 4.66 4.81 4.94
8.80 DISCHG 5.06 5.16 5.27 5.38 5.66 6.04 6.33 6.53 6.68 6.82
9.60 DISCHG 7.07 7.50 7.86 8.10 8.28 8.43 8.67 9.11 9.55 10.00
10.40 DISCHG 10.81 11.65 12.36 13.61 14.97 16.00 17.39 18.95 20.13 21.60
11.20 DISCHG 23.36 24.75 26.73 29.50 32.57 49.88 88.43 122.25 174.86 276.94
12.00 DISCHG 370.12 382.21 283.38 176.08 119.86 86.79 67.11 56.72 49.70 44.72
12.80 DISCHG 41.84 38.77 35.43 33.32 31.30 29.08 27.66 26.40 24.93 23.91
13.60 DISCHG 22.93 21.51 20.46 19.76 18.97 18.37 17.91 17.22 16.62 16.19
14.40 DISCHG 15.53 14.92 14.50 13.86 13.20 12.84 12.68 12.61 12.58 12.57
15.20 DISCHG 12.57 12.53 12.20 11.60 11.16 10.95 10.87 10.83 10.81 10.80
16.00 DISCHG 10.80 10.80 10.81 10.81 10.81 10.81 10.82 10.72 10.23 9.63
16.80 DISCHG 9.30 9.15 9.08 9.05 9.04 9.03 9.03 9.04 9.04 9.04
17.60 DISCHG 9.04 9.04 9.03 8.80 8.21 7.69 7.45 7.34 7.28 7.26
18.40 DISCHG 7.25 7.25 7.25 7.25 7.25 7.25 7.25 7.25 7.25 7.25
J 19.20 DISCHG 7.26 7.26 7.26 7.26 7.26 7.26 7.26 7.25 7.02 6.43

TR20 XEQ 6/24/99 GRANDOVER (WEST) COMMERCIAL-POST-DEV. W/PONDS 100 YR, 06/22/99 20 JOB 1 PASS 1
REV 09/01/83 30 PAGE 13
20.00 DISCHG 5.91 5.66 5.54 5.49 5.47 5.46 5.45 5.45 5.45 5.45
20.80 DISCHG 5.45 5.46 5.46 5.46 5.46 5.46 5.46 5.46 5.46 5.46
21.60 DISCHG 5.46 5.46 5.46 5.46 5.46 5.46 5.46 5.46 5.46 5.47
22.40 DISCHG 5.47 5.47 5.47 5.47 5.47 5.47 5.47 5
47 5
47 5
47
23.20 DISCHG 5.47 5.47 5.47 5.47 5.47 5.47 5.47 .
5.46 .
5.23 .
4.63
RUNOFF VOLUME ABOV E BASEFLOW = 5.37 WATERSHED IN CHES, 346.26 CFS-HRS, 28 .62 ACRE-FEET; BASEFLOW = .00 CFS

OPERATION ADDHYD C ROSS SECTI ON 13
INPUT HYD ROGRAPHS= 1,2 OUTPUT HYDROGRAPH= 3
**ELEVAT ION OUTPUT OPTION REQUESTED BUT NO ELEVATIONS GIVEN ***
PEAK TIME (HRS) PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET)
12.11 1321.36 (NULL)
23.64 22.26 (NULL)
IME(HRS) FIRST HYDROG RAPH POINT = .00 HOURS TIME INCRE MENT = .08 HOURS DRAINAGE AREA = .39 SQ.MI.
3.20 DISCHG .00 .01 .01 .01 .01 .01 .02 .02 .02 .02
4.00 DISCHG .03 .03 .04 .04 .05 .05 .06 .07 .07 .08
4.80
5.60 DISCHG
DISCHG .10
.76 .14
.83 .20
.91 .27
.98 .34
1.05 .41
1.11 .48
1.21 .55
1.36 .62
1.53 .70
1.66
6.40 DISCHG 1.77 1.87 1.96 2.05 2.13 2.22 2.30 2.38 2.46 2.54
7.20 DISCHG 2.62 2.70 2.77 2.85 2.92 3.00 3.07 3.14 3.21 3.28
8.00 DISCHG 3.35 3.49 3.76 4.03 4.26 4.59 4.92 5.16 5.33 5.47
8.80 DISCHG 5.60 5.71 5.83 5.96 6.71 10.54 13.93 16.87 19.41 21.62
9.60 DISCHG 23.71 25.86 27.87 29.64 31.20 32.57 33.91 35.44 37.00 38.61
10.40 DISCHG 40.71 43.28 46.78 50.89 55.45 59.80 64.60 69.85 74.81 80.06
11.20 DISCHG 85.85 91.38 97.66 105.40 115.70 148.22 227.73 329.12 484.33 755.24
12.00 DISCHG 1082.90 1307.74 1256.36 1030.68 803.35 629.54 494.29 403.86 337.80 290.35
12.80
13.60 DISCHG
DISCHG 256.05
115.91 228.02
109.14 204.38
103.06 186.05
97.84 170.77
93.02 158.59
89.08 148.12
85.70 138.85
82.34 130.16
79.22 122.66
76.47
14.40 DISCHG 73.63 70.87 68.41 65.81 63.17 60.91 59.10 57.68 56.55 55.67
15.20 DISCHG 54.96 54.36 53.42 51.99 50.56 49.68 48.94 48.31 47.76 47.29
16.00 DISCHG 46.89 46.54 46.23 45.97 45.74 45.55 45.38 45.11 44.33 43.25
16.80 DISCHG 42.30 41.53 40.88 40.33 39.86 39.45 39.10 38.80 38.55 38.33
17.60 DISCHG 38.13 37.97 37.82 37.40 36.47 35.43 34.57 33.85 33.25 32.74
18.40 DISCHG 32.30 31.92 31.60 31.32 31.08 30.88 30.70 30.55 30.41 30.30
19.20 DISCHG 30.20 30.12 30.05 29.99 29.93 29.89 29.85 29.80 29.48 28.63
20.00 DISCHG 27.65 26.85 26.18 25.62 25.15 24.74 24.39 24.09 23.83 23.61
20.80 DISCHG 23.42 23.26 23.11 22.99 22.89 22.80 22.72 22.65 22.59 22
54
21.60 DISCHG 22.50 22.46 22.43 22.41 22.38 22.36 22.34 22.33 22.32 .
22.31
22.40 DISCHG 22.30 22.29 22.28 22.28 22.27 22.27 22.27 22.26 22.26 22.26
23.20 DISCHG 22.26 22.26 22.26 22.26 22.26 22.26 22.26 22.24 21.95 21.12
RUNO
FF V OLUME ABOVE BASEFLOW = 5.64 WAT ERSHED INCHES, 14 38.48 CFS-HRS, 118.88 ACRE-FE ET; BASEFLOW = .00 CFS
G

I
TR20 XEQ 6/24/99 GRANDOVER (WEST) COM MERCIAL- POST-DEV. W/PONDS 100 YR, 06/22 /99 20 JOB 1
m REV 09/01/83 30
O
PERATION RESVOR STRUCTURE 15
INPUT H YDROGRAPH= 3 OUTPUT HYDROGRAP H= 4
SURFACE ELEVATION= 770.86
PEAK TI ME(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATI ON(FEET)
12.1 9 1185.70 774.76
T IME(HRS) FIRST HYDROGRAPH POINT = .00 HOURS TIME INCR EMENT = .08 HOURS DRAINAGE AREA = .39 SQ.MI.
5.60
5.60 DISCHG
ELEV .00
770.86 .00
770.86 .00
770.86 .00
770.86 .01
770.88 .01
770.88 .01
770.88 .01
770.89 .01
770.89 .01
770.89
6.40 DISCHG .01 .01 .01 .01 .02 .02 .02 .02 .02 .02
6.40 ELEV 770.90 770.90 770.91 770.91 770.91 770.92 770.92 770.93 770.93 770.94
7.20 DISCHG .02 .03 .03 .03 .03 .03 .04 .04 .04 .51
7.20 ELEV 770.95 770.95 770.96 770.96 770.97 770.98 770.98 770.99 771.00 771.00
8.00 DISCHG 1.35 1.97 2.46 2.89 3.26 3.61 3.95 4.28 4.56 4.81
8.00 ELEV 771.01 771.01 771.01 771.02 771.02 771.02 771.02 771.03 771.03 771.03
8.80 DISCHG 5.03 5.21 5.38 5.53 5.77 6.62 8.30 10.41 12.72 15.04
8.80 ELEV 771.03 771.03 771.03 771.03 771.04 771.04 771.05 771.06 771.08 771.09
9.60
9.60 DISCHG
ELEV 17.31
771.11 19.54
771.12 21.72
771.13 23.82
771.15 25.79
771.16 27.60
771.17 29.28
771.18 30.89
771.19 32.48
771.20 34.07
771.21
10.40 DISCHG 35.73 37.60 39.81 42.50 45.68 49.24 53.10 57.31 61.78 66.45
10.40 ELEV 771.22 771.23 771.25 771.26 771.28 771.30 771.33 771.35 771.38 771.41
11.20 DISCHG 71.37 76.51 81.87 87.73 94.53 105.68 130.21 181.57 287.66 444.16
11.20 ELEV 771.44 771.47 771.51 771.54 771.58 771.65 771.80 772.07 772.42 772.95
12.00 DISCHG 705.47 990.99 1168.63 1153.30 1009.09 831.50 681.74 552.49 452.58 387.32
12.00
12.80 ELEV
DISCHG 773.64
333.55 774.33
290.42 774.72
255.45 774.69
227.07 774.37
204.14 773.97
185.55 773.58
170.38 773.25
159.28 772.98
151.90 772.76
144.30
12.80 ELEV 772.58 772.43 772.32 772.22 772.14 772.08 772.03 771.98 771.94 771.89
13.60 DISCHG 136.85 129.60 122.60 116.00 109.87 104.26 99.23 94.70 90.55 86.77
13.60 ELEV 771.84 771.80 771.76 771.72 771.68 771.64 771.61 771.58 771.56 771.54
14.40 DISCHG 83.28 79.99 76.91 73.99 71.16 68.44 65.93 63.68 61.72 60.05
14.40 ELEV 771.51 771.49 771.47 771.46 771.44 771.42 771.41 771.39 771.38 771.37
15.20 DISCHG 58.64 57.45 56.39 55.29 54.10 52.91 51.84 50.88 50.03 49.29
15.20 ELEV 771.36 771.35 771.35 771.34 771.33 771.33 771.32 771.31 771.31 771.30
16.00 DISCHG 48.63 48.06 47.56 47.13 46.75 46.42 46.13 45.87 45.53 45.01
16.00
16.80 ELEV
DISCHG 771.30
44.35 771.30
43.62 771.29
42.90 771.29
42.22 771.29
41.59 771.29
41.01 771.28
40.49 771.28
40.03 771.28
39.63 771.28
39.27
16.80 ELEV 771.27 771.27 771.26 771.26 771.26 771.25 771.25 771.25 771.24 771.24
17.60 DISCHG 38.96 38.69 38.45 38.20 37.83 37.27 36.59 35.88 35.19 34.53
17.60 ELEV 771.24 771.24 771.24 771.24 771.23 771.23 771.23 771.22 771.22 771.21
18.40 DISCHG 33.93 33.39 32.90 32.47 32.09 31.76 31.47 31.22 31.00 30.81
18.40 ELEV 771.21 771.21 771.20 771.20 771.20 771.20 771.19 771.19 771.19 771.19
19.20 DISCHG 30.64 30.50 30.37 30.27 30.18 30.10 30.03 29.97 29.87 29.63
19.20 ELEV 771.19 771.19 771.19 771.19 771.19 771.19 771.19 771.18 771.18 771.18
20.00 DISCHG 29.18 28.61 27.98 27.36 26.77 26.23 25.73 25.29 24.89 •24.54
20.00 ELEV 771.18 771.18 771.17 771.17 771.17 771.16 771.16 771.16 771.15 771.15
20.80 DISCHG 24.24 23.97 23.74 23.53 23.36 23.20 23.07 22.96 22.86 22.77
20.80 ELEV 771.15 771.15 771.15 771.15 771.14 771.14 771.14 771.14 771.14 771.14
PASS 1
PAGE 14
I
TR20 XEQ
6/24/99
GRANDOVER
(WEST) COMMERCIAL-POST-DEV.
W/PONDS 100
YR, 06/22/99 20
JOB 1 PASS 1

REV
0
09/01/83
30
PAGE 15
21.60 DISCHG 22.70 22.63 22.58 22.53 22.49 22.45 22.42 22.40 22.38 22.36
21.60 ELEV 771.14 771.14 771.14 771.14 771.14 771.14 771.14 771.14 771.14 771.14
22.40 DISCHG 22.34 22.33 22.31 22.30 22.30 22.29 22.28 22.28 22.27 22.27
22.40 ELEV 771.14 771.14 771.14 771.14 771.14 771.14 771.14 771.14 771.14 771.14
23.20 DISCHG 22.27 22.26 22.26 22.26 22.26 22.26 22.26 22.25 22.21 22.01
23.20 ELEV 771.14 771.14 771.14 771.14 771.14 771.14 771.14 771.14 771.14 771.14
RUNOFF VOLUME ABOVE BASEFLOW = 5.60 WA TERSHED INCHES, 14 27.60 CFS-HRS, 117.98 ACRE-FEET; BASE FLOW = .00 CFS
ROPERATION REACH CROSS SECTION 15
INPUT HYDROGRAPH= 4 OUTPUT HYDROGRAPH= 5
LENGTH = 1200.00 FEET INPUT = COEFFICIENTS RELATED TO CROSS SECTIONAL AREA, X= .85, M= 1.38
MODIFIED ATT-KIN ROUTING COEFFICIENT = 1.00 PEAK TRAVEL TIME _ .00 HOURS
*** WARNING REACH 15 ATT-KIN COEFF.(C) GREATER THAN 0.667, CONSIDER REDUCING MAIN TIME INCREMENT ***
PEAK T IME(HRS) PEAK DISCHAR GE(CFS) PEAK ELEVATION(FEET)
12. 19 1185.70 (NULL)
? IME(HRS) FIRST HYDROGRAPH POINT = .00 HOURS TIME INCR EMENT = .08 HOURS DRAINAGE AREA = .39 SO.MI.
5.60 DISCHG .00 .00 .00 .00 .01 .01 .01 .01 .01 .01
6.40 DISCHG .01 .01 .01 .01 .02 .02 .02 .02 .02 .02
7.20 DISCHG .02 .03 .03 .03 .03 .03 .04 .04 .04 .51
8.00 DISCHG 1.35 1.97 2.46 2.89 3.26 3.61 3.95 4.28 4.56 4.81
8.80 DISCHG 5.03 5.21 5.38 5.53 5.77 6.62 8.30 10.41 12.72 15.04
9.60
10.40 DISCHG
DISCHG 17.31
35.73 19.54
37.60 21.72
39.81 23.82
42.50 25.79
45.68 27.60
49.24 29.28
53.10 30.89
57.31 32.48
61.78 34.07
66.45
11.20 DISCHG 71.37 76.51 81.87 87.73 94.53 105.68 130.21 181.57 287.66 444.16
12.00 DISCHG 705.47 990.99 1168.63 1153.30 1009.09 831.50 681.74 552.49 452.58 387.32
??
h.? 12.80 DISCHG 333.55 290.42 255.45 227.07 204.14 185.55 170.38 159.28 151.90 144.30
13.60 DISCHG 136.85 129.60 122.60 116.00 109.87 104.26 99.23 94.70 90.55 86.77
14.40 DISCHG 83.28 79.99 76.91 73.99 71.16 68.44 65.93 63.68 61.72 60.05
15.20 DISCHG 58.64 57.45 56.39 55.29 54.10 52.91 51.84 50.88 50.03 49.29
16.00 DISCHG 48.63 48.06 47.56 47.13 46.75 46.42 46.13 45.87 45.53 45.01
16.80 DISCHG 44.35 43.62 42.90 42.22 41.59 41.01 40.49 40.03 39.63 39.27
17.60
18.40 DISCHG
DISCHG 38.96
33.93 38.69
33.39 38.45
32.90 38.20
32.47 37.83
32.09 37.27
31.76 36.59
31.47 35.88
31.22 35.19
31.00 34.53
30.81
19.20 DISCHG 30.64 30.50 30.37 30.27 30.18 30.10 30.03 29.97 29.87 29.63
20.00 DISCHG 29.18 28.61 27.98 27.36 26.77 26.23 25.73 25.29 24.89 24.54
20.80 DISCHG 24.24 23.97 23.74 23.53 23.36 23.20 23.07 22.96 22.86 22.77
21.60 DISCHG 22.70 22.63 22.58 22.53 22.49 22.45 22.42 22.40 22.38 22.36
22.40 DISCHG 22.34 22.33 22.31 22.30 22.30 22.29 22.28 22.28 22.27 22.27
23.20 DISCHG 22.27 22.26 22.26 22.26 22.26 22.26 22.26 22.25 22.21 22.01
RUNOFF VOLUME ABOVE BASEFLOW = 5.60 WATERSHED INCHES, 1 427.60 CFS-HRS, 117.98 ACRE-FEE T; BASEFLOW = .00 CFS
OPER
ATION RUNOFF CROSS SECTION 16
OUTPUT HYDROGRAPH= 6
AREA= .14 SO MI INPUT RUNOFF CURVE= 83. T IME OF CONCENTRATION= .17 HOURS
i0
TR20 XEQ 6/24/99 GRANDOVER (WEST) COMMERCIAL-POST-DEV. W/PONDS 100 YR, 06/22/99 20 JOB 1 PASS 1
0 REV 09/01/83 30 PAGE 16
INTERNAL HYDROGRAPH TIME INCREMENT= .0227 HOURS
PEAK TIME(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET)
12.00 609.95 (RUNOFF)
15.17 17.74 (RUNOFF)
16.44 15.30 (RUNOFF)
17.65 12.76 (RUNOFF)
19.65 10.24 (RUNOFF)
23.64 7.72 (RUNOFF)
T IME(HRS) FIR ST HYDROGR APH POINT = .00 HOU RS TIME INCR EMENT = .08 HOURS DRAINAGE AREA = .14 SQ.MI.
? 4.00 DISCHG .00 .00 .00 .00 .00 .00 .00 .04 .12 .22
4.80 DISCHG .31 .41 .50 .60 .69 .78 .87 .96 1.05 1.13
5.60 DISCHG 1.22 1.30 1.39 1.47 1.55 1.63 1.82 2.12 2.32 2.47

r 6.40 DISCHG 2.59 2.71 2.82 2.93 3.04 3.15 3.26 3.36 3.46 3.56
7.20 DISCHG 3.66 3.76 3.86 3.95 4.05 4.14 4.23 4.32 4.41 4.50
8.00 DISCHG 4.58 4.89 5.44 5.74 6.09 6.73 7.12 7.34 7.51 7.66
8.80 DISCHG 7.81 7.95 8.08 8.28 8.94 9.52 9.81 10.01 10.18 10.36
9.60 DISCHG 10.98 11.71 12.08 12.32 12.52 12.70 13.21 14.07 14.56 15.38
10.40 DISCHG 17.08 18.04 19.12 21.75 23.40 24.61 27.42 29.42 30.66 33.57
11.20
12.00 DISCHG
DISCHG 35.97
609.94 37.43
518.88 41.78
268.85 46.02
158.11 50.68
117.05 104.39
87.13 172.68
74.53 205.66
69.18 331.45
62.44 522.21
58.87
12.80 DISCHG 56.69 50.68 46.78 45.14 41.54 38.86 37.84 35.62 33.62 32.87
13.60 DISCHG 30.96 28.80 28.01 27.06 25.86 25.40 24.69 23.47 22.95 22.34
14.40 DISCHG 21.09 20.49 19.98 18.71 18.02 17.81 17.74 17.73 17.73 17.73
15.20 DISCHG 17.74 17.66 16.67 15.69 15.37 15.27 15.24 15.23 15.23 15.24
16.00 DISCHG 15.24 15.24 15.25 15.25 15.26 15.26 15.26 14.94 13.72 13.04
16.80 DISCHG 12.82 12.76 12.74 12.74 12.74 12.74 12.74 12.74 12.75 12.75
17.60 DISCHG 12.75 12.75 12.74 12.00 10.85 10.41 10.27 10.23 10.22 10.22
18.40 DISCHG 10.22 10.22 10.22 10.22 10.22 10.22 10.22 10.23 10.23 10.23
19.20 DISCHG 10.23 10.23 10.23 10.23 10.24 10.24 10.24 10.22 9.48 8
33
20.00 DISCHG 7.89 7.74 7.70 7.69 7.68 7.69 7.69 7.69 7.69 .
7.69
20.80 DISCHG 7.69 7.69 7.69 7.69 7.69 7.69 7.69 7.69 7.69 7.70
21.60 DISCHG 7.70 7.70 7.70 7.70 7.70 7.70 7.70 7.70 7.70 7.70
22.40 DISCHG 7.70 7.70 7.70 7.70 7.71 7.71 7.71 7.71 7.71 7.71
23.20 DISCHG 7.71 7.71 7.71 7.71 7.71 7.71 7.71 7.69 6.95 5.80
0 RUNOFF VOLUME ABOVE BASEFLOW = 5.49 WATERSHED INCHES, 496.37 CFS-HRS, 41.02 ACRE-FEET; BASEFLOW = .00 CFS
OPERATION ADDHYD CROSS SECTION 17
INPUT HYDROGRAPHS= 5,6 OUTPUT HYDROGRAPH= 7
0**ELEVATION OUTPUT OPTION REQUESTED BUT NO ELEVATIONS GIVEN***
PEAK TIME(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET)
12.10 1516.86 (NULL)
23.64 29.97 (NULL)
TR20 XEQ 6/24/99 GRANDOVER (WEST) COMMERCIAL-POST-DEV. W/PONDS 100 YR, 06/22/99 20 JOB 1 PASS 1
REV 09101/83 30 PAGE 17
TIME(HRS) FIRST HYDROGRAPH POINT = .00 HOURS TIME INCREMENT = .08 HOURS DRAINAGE AREA = .53 SQ.MI.
4.00 DISCHG .00 .00 .00 .00 .00 .00 .00 .04 .12 .22
4.80 DISCHG .31 .41 .50 .60 .69 .78 .87 .96 1.05 1.13
5.60 DISCHG 1.22 1.30 1.39 1.47 1.56 1.64 1.82 2.13 2.33 2.48
6.40 DISCHG 2.60 2.72 2.84 2.95 3.06 3.17 3.27 3.38 3.48 3.59
7.20 DISCHG 3.69 3.79 3.89 3.98 4.08 4.17 4.27 4.36 4.45 5.01
8.00 DISCHG 5.93 6.86 7.90 8.63 9.35 10.34 11.07 11.62 12.08 12.48
8.80 DISCHG 12.83 13.16 13.46 13.81 14.72 16.14 18.10 20.43 22.90 25.40
9.60 DISCHG 28.29 31.25 33.81 36.14 38.31 40.31 42.50 44.96 47.04 49.45
10.40 DISCHG 52.82 55.64 58.93 64.25 69.08 73.85 80.52 86.73 92.45 100.02
11.20 DISCHG 107.34 113.94 123.65 133.75 145.21 210.07 302.88 387.23 619.12 966.37
12.00 DISCHG 1315.41 1509.88 1437.48 1311.42 1126.14 918.62 756.27 621.67 515.02 446.18
12.80 DISCHG 390.24 341.10 302.23 272.20 245.68 224.41 208.22 194.90 185.52 177.17
13.60 DISCHG 167.80 158.40 150.61 143.05 135.73 129.66 123.92 118.17 113.50 109.11
14.40 DISCHG 104.37 100.48 96.88 92.70 89.18 86.24 83.67 81.41 79.45 77.78
15.20 DISCHG 76.38 75.12 73.06 70.99 69.47 68.18 67.08 66.11 65.27 64.52
16.00 DISCHG 63.87 63.30 62.81 62.38 62.00 61.68 61.40 60.81 59.24 58.05
16.80 DISCHG 57.17 56.38 55.64 54.95 54.32 53.75 53.24 52.78 52.38 52.02
17.60 DISCHG 51.71 51.45 51.19 50.20 48.68 47.68 46.86 46.11 45.40 44.75
18.40 DISCHG 44.15 43.61 43.12 42.69 42.32 41.98 41.70 41.44 41.23 41.04
19.20 DISCHG 40.87 40.73 40.61 40.50 40.41 40.33 40.27 40.19 39.35 37.96
20.00 DISCHG 37.07 36.35 35.68 35.05 34.46 33.91 33.42 32.97 32.58 32.23
20.80 DISCHG 31.93 31.66 31.43 31.22 31.05 30.90 30.76 30.65 30.55 30.47
21.60 DISCHG 30.39 30.33 30.28 30.23 30.19 30.15 30.12 30.10 30.08 30.06
22.40 DISCHG 30.04 30.03 30.02 30.01 30.00 30.00 29.99 29.98 29.98 29.98
23.20 DISCHG 29.98 29.97 29.97 29.97 29.97 29.97 29.97 29.95 29.16 27.80
RUNOFF VOLUME ABOVE BASEFLOW = 5.57 WATERSHED INCHES, 1923.97 CFS-HRS, 159.00 ACRE-FEET; BASEFLOW = .00 CFS
PERATION RESVOR STRUCTURE 18
INPUT HYDROGRAPH= 7 OUTPUT HYDROGRAPH= 1
SURFACE ELEVATION= 753.50
PEAK TIME(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET)
12.32 1124.93 761.36
IME(HRS) FIRST HYDROGRAPH POINT = .00 HOURS TIME INCREMENT = .08 HOURS DRAINAGE AREA = .53 SQ.MI.
4.80 DISCHG .00 .01 .01 .02 .02 .03 .03 .04 .05 .06
4.80 ELEV 753.50 753.50 753.51 753.51 753.51 753.51 753.52 753.52 753.52 753.53
5.60 DISCHG .06 .07 .08 .10 .11 .12 .13 .15 .16 .18
5.60 ELEV 753.53 753.54 753.54 753.55 753.56 753.56 753.57 753.58 753.59 753.60
6.40 DISCHG .20 .22 .24 .26 .28 .31 .33 .35 .38 .40
6.40 ELEV 753.61 753.62 753.63 753.64 753.65 753.66 753.67 753.69 753.70 753.71
7.20 DISCHG .43 .46 .48 .51 .54 .57 .60 .63 .66 .69
7.20 ELEV 753.73 753.74 753.75 753.77 753.78 753.80 753.81 753.83 753.85 753.86
8.00 DISCHG .73 .77 .83 .89 .95 1.05 1.16 1.27 1.38 1.50
8.00 ELEV 753.88 753.91 753.94 753.97 754.00 754.03 754.06 754.09 754.13 754.16
8.80 DISCHG 1.63 1.75 1.88 2.01 2.14 2.29 2.45 2.63 2.78 2.93

9
TR20 XEO 6/24/99 GRANDOVER (WEST) COMMERCIAL-POST-DEV. W/PONDS 100 YR, 06/22/99 20 JOB 1 PASS 1
REV 09/01/83 30 PAGE 18
8.80 ELEV 754.20 754.23 754.27 754.31 754.35 754.39 754.44 754.49 754.55 754.62
9.60 DISCHG 3.10 3.29 3.50 3.72 7.20 11.26 15.07 18.70 22.15 25.45
9.60 ELEV 754.70 754.78 754.88 754.98 755.06 755.14 755.21 755.27 755.34 755.40
10.40 DISCHG 28.70 32.49 37.86 43.00 48.12 53.17 58
37 63
84 69
41 75
22
D 10.40 ELEV 755.46 755.51 755.57 755.62 755.67 755.72 .
755.78 .
755.83 .
755.89 .
755.95
11.20 DISCHG 81.40 87.89 94.75 102.28 110.54 125.43 156.27 205.03 278.50 411.99
11.20 ELEV 756.01 756.06 756.11 756.17 756.24 756.36 756.58 756.91 757.35 758.07

' 12.00 DISCHG 599.34 814.59 989.02 1091.03 1124.84 1097.72 1028.84 938.89 840.82 745.48
12.00 ELEV 758.96 759.94 760.74 761.21 761.36 761.24 760.92 760.51 760.06 759.63
12.80 DISCHG 658.87 581.27 512.56 455.70 406.75 361.74 323.06 291.80 267.02 246.13
12.80 ELEV 759.23 758.88 758.56 758.29 758.05 757.81 757.60 757.43 757.28 757.16
13.60 DISCHG 228.17 211.93 197.10 184.11 172.56 162.27 153.11 144.82 138.24 132.26
13.60 ELEV 757.06 756.96 756.86 756.77 756.69 756.62 756.56 756.51 756.46 756.41
14.40 DISCHG 126.60 121.23 116.23 111.47 106.92 102.65 98.73 95
14 91
87 88
93
14.40 ELEV 756.36 756.32 756.28 756.25 756.21 756.18 756.15 .
756.12 .
756.09 .
756.07
15.20 DISCHG 86.30 83.96 81.77 79.62 77.59 75.69 73.95 72.36 70.91 69.61
15.20 ELEV 756.05 756.03 756.01 755.99 755.97 755.95 755.94 755.92 755.90 755.89
16.00 DISCHG 68.44 67.39 66.45 65.62 64.87 64.22 63.64 63.09 62.43 61.61
16.00 ELEV 755.88 755.87 755.86 755.85 755.84 755.84 755.83 755.82 755.82 755.81
16.80 DISCHG 60.74 59.88 59.05 58.23 57.46 56.72 56.02 55.37 54.76 54.21
16.80 ELEV 755.80 755.79 755.78 755.78 755.77 755.76 755.75 755.75 755.74 755.73
17.60 DISCHG 53.70 53.24 52.83 52.37 51.73 50.96 50.16 49.37 48.59 47.83
17.60 ELEV 755.73 755.72 755.72 755.72 755.71 755.70 755.69 755.69 755.68 755.67
18.40 DISCHG 47.10 46.40 45.74 45.13 44.56 44.04 43.56 43.13 42.74 42.39
18.40 ELEV 755.66 755.66 755.65 755.64 755.64 755.63 755.63 755.62 755.62 755.61
19.20 DISCHG 42.08 41.80 41.56 41.34 41.15 40.98 40.83 40.70 40.50 40.10
19.20 ELEV 755.61 755.61 755.61 755.60 755.60 755.60 755.60 755.60 755.60 755.59
20.00 DISCHG 39.54 38.93 38.30 37.66 37.03 36.42 35.82 35.25 34.72 34.22
20.00 ELEV 755.59 755.58 755.57 755.57 755.56 755.55 755.55 755.54 755.54 755.53
20.80 DISCHG 33.75 33.33 32.94 32.59 32.28 31.99 31.74 31.52 31.32 31.14
20.80 ELEV 755.53 755.52 755.52 755.51 755.51 755.51 755.51 755.50 755.50 755.50
21.60 DISCHG 31.05 30.96 30.88 30.80 30.73 30.66 30.59 30.53 30.47 30.42
' 21.60 ELEV 755.50 755.50 755.50 755.49 755.49 755.49 755.49 755.49 755.49 755.49
22.40 DISCHG 30.38 30.33 30.29 30.26 30.23 30.20 30.17 30.15 30.13 30.11
22.40 ELEV 755.49 755.49 755.48 755.48 755.48 755.48 755.48 755.48 755.48 755.48
23.20 DISCHG 30.09 30.08 30.06 30.05 30.04 30.03 30.03 30.02 29.96 29.77
23.20 ELEV 755.48 755.48 755.48 755.48 755.48 755.48 755.48 755.48 755.48 755.47
RUNOFF VOLUME ABOVE BASEFLOW = 5.43 WAT ERSHED INCHES, 1874.04 CFS-HRS, 154.87 ACRE-FEET; BASEFLOW = .00 CFS
IXECUTIVE CONTROL OPERATION ENDCMP COM PUTATIONS COMPLETED FOR PASS 1 RECORD ID 480
EXECUTIVE CONTROL OPERATION ENDJOB RECORD ID 490

TR20 XEQ 6/24/99 GRANDOVER (WEST) COMMERCIAL-POST-DEV. W/PONDS 100 YR, 06/ 22/99 20 JOB 1 SUMMARY
REV 09/01/83 30 PAGE 19
9UMMARY TABL E 1 - SEL ECTED RESU LTS OF STANDARD AND EXECUTIVE CONTROL INSTRUCTIONS IN THE ORDER PERFORMED
(A STAR(*) AF TER THE PEAK DI SCHARGE TIME A ND RATE ( CFS) VALUES INDICATES A FLAT TOP HYDROGRAPH

IECTION/ A
STANDARD QUESTION M ARK(?)
RAIN INDICATE
ANTEC S A HYDROGRAPH
MAIN WITH PEA
PRECIPITA K AS LAST POINT.)
TION
PEAK
DISCHARGE
STRUCTURE CONTROL DRAINAGE TABLE MOIST TIME ------ --------- ---------- RUNOFF ------- ---------- -------------- -------
ID OPERATION AREA # COND INCREM BEGIN AMOUNT DURATION AMOUNT ELEVATI ON TIME RATE RATE
(SQ MI) (HR) (HR) (IN) (HR) (IN) (FT) (HR) (CFS) (CSM)
ALTERNATE 1 STORM 1
SECTION 1 RUNOFF .24 2 2 .08 .0 7.50 24.00 6.29 --- 12.04 1048.00 4366.7
STRUCTURE
SECTION 16
3 RESVOR
REACH .24
.24 2
2 2
2 .08
.08 .0
.0 7.50
7.50 24.00
24.00 5.88
5.88 800.80
--- 12.14
12.14 857.54
857.54 3573.1
3573.1
SECTION 4 RUNOFF .03 2 2 .08 .0 7.50 24.00 6.30 --- 12.03 110.75 4429.9
STRUCTURE 17 RESVOR .03 2 2 .08 .0 7.50 24.00 5.60 817.76 12.12 90.63 3625.0
SECTION 6 REACH .03 2 2 .08 .0 7.50 24.00 5.60 --- 12.12 90.63 3625.0
XSECTION 7 RUNOFF .03 2 2 .08 .0 7.50 24.00 5.72 --- 12.00 134.73 4491.0
SECTION 8 ADDHYD .05 2 2 .08 .0 7.50 24.00 5.67 --- 12.03 209.85 3815.4
TRUCTURE 1 RESVOR .05 2 2 .08 .0 7.50 24.00 5.09 801.44 12.22 123.80 2251.0
SECTION 10 REACH .05 2 2 .08 .0 7.50 24.00 5.09 --- 12.22 123.80 2251.0
SECTION 11 ADDHYD .29 2 2 .08 .0 7.50 24.00 5.74 --- 12.14 976.77 3311.1
SECTION 12 RUNOFF .10 2 2 .08 .0 7.50 24.00 5.37 --- 12.05 390.69 3906.9
XSECTION 13 ADDHYD .39 2 2 .08 .0 7.50 24.00 5.64 --- 12.11 1321.36 3345.2
TRUCTURE 15 RESVOR .39 2 2 .08 .0 7.50 24.00 5.60 774.76 12.19 1185.70 3001.8
SECTION 15 REACH .39 2 2 .08 .0 7.50 24.00 5.60 --- 12.19 1185.70 3001.8
ECTION 16 RUNOFF .14 2 2 .08 .0 7.50 24.00 5.49 --- 12.00 609.95 4356.8
ECTION
( 17 ADDHYD .53 2 2 .08 .0 7.50 24.00 5.57 --- 12.10 1516.86 2835.2
RUCTURE 18 RESVOR .53 2 2 .08 .0 7.50 24.00 5.43 761.36 12.32 1124.93 2102.7

TR20 XEQ 6/24/99 GRANDOVER (WEST) COMMERCIAL-POST-DEV. W/PONDS 100 YR, 06/22/99 20 JOB 1 SUMMARY
REV 09/01/83 30 PAGE 20
SUMMARY TABLE 2 - SELECTED MODIFIED ATT-KIN REACH ROUTINGS IN ORDER OF STANDARD EXECUTIVE CONTROL INSTRUCTIONS
(A STAR(*) AFTER VOLUME ABOVE BASE(IN) INDICATES A HYDROGRAPH TRUNCATED AT A VALUE EXCEEDING BASE + 10% OF PEAK
A QUESTION MARK(?) AFTER COEFF.(C) INDICATES PARAMETERS OUTSIDE ACCEPTABLE LIMITS, SEE PREVIOUS WARNINGS)
HYDROGRAPH INFORMATION ROUTING PARAMETERS PEAK
OUTFLOW+ VOLUME MAIN ITER- Q AND A PEAK S/Q ATT- TRAVEL TIME
SEC REACH INFLOW OUTFLOW INTERV.AREA BASE- ABOVE TIME ATION EQUATION LENGTH RATIO @PEAK KIN STOR- KINE-
ID LENGTH PEAK TIME PEAK TIME PEAK TIME FLOW BASE INCR # COEFF POWER FACTOR 0/I (K) COEFF AGE MATIC
(FT) (CFS) (HR) (CFS) (HR) (CFS) (HR) (CFS) (IN) (HR) (X) (M) (K*) (Q*) (SEC) (C) (HR) (HR)
ALTERNATE 1 STORM 1
3 1350 851 12.2 851 12.2 --- --- 0 5.88 .08 0 1.60 1.45 .007 1.000 83 1.00? .00 .00
6 800 89 12.2 89 12.2 --- --- 0 5.60 .08 0 1.60 1.44 .010 1.000 102 1.00? .00 .00
10 800 123 12.2 123 12.2 --- --- 0 5.09 .08 0 1.60 1.44 .005 1.000 92 1.00? .00 .00
15 1200 1169 12.2 1169 12.2 --- --- 0 5.60 .08 0 .850 1.38 .013 1.000 140 1.00? .00 .00
C.1
CTI
Ll
0
TR20 XEQ 6/24/99 GRANDOVER (WEST) COMMERCIAL-POST-DEV. W/PONDS 100 YR, 06/22/99 20 JOB 1 SUMMARY
REV 09/01/83 30 PAGE 21
SUMMARY TABLE 3 - DISCHARGE (CFS) AT XSECTIONS AND STRUCTURES FOR ALL STORMS AND ALTERNATES
XSECTION/ DRAINAGE
STRUCTURE AREA STORM NUMBERS..........
ID (SO MI) 1
STRUCTURE 18 .53
ALTERNATE 1 1124.93
11 STRUCTURE 17 .03
ALTERNATE 1 90.63
STRUCTURE 16 .24
ALTERNATE 1 857.54
STRUCTURE 15 .39
ALTERNATE 1 1185.70
STRUCTURE 1 .05
ALTERNATE 1 123.80
XSECTION 1 .24
ALTERNATE 1 1048.00
XSECTION 3 .24
ALTERNATE 1 857.54
XSECTION 4 .03
ALTERNATE 1 110.75
lXSECTION 6 .03
ALTERNATE 1 90.63
XSECTION 7 .03
ALTERNATE 1 134.73
(SECTION 8 .05
13 ALTERNATE 1 209.85
SECTION 10 .05
ALTERNATE 1 123.80
SECTION 11 .29
ALTERNATE 1 976.77
SECTION 12 .10
ALTERNATE 1 390.69
TR20 XEQ 6/24/99 GRANDOVER (WEST) COMMERCIAL-POST-DEV. W/PONDS 100 YR, 06/22/99 20 JOB 1 SUMMARY
REV 09/01/83 30 PAGE 22
SUMMARY TABLE 3 - DISCHARGE (CFS) AT XSECTIONS AND STRUCTURES FOR ALL STORMS AND ALTERNATES
XSECTION/ DRAINAGE
STRUCTURE AREA STORM NUMBERS..........
ID (SQ MI) 1
XSECTION 13 .39
ALTERNATE 1 1321.36
XSECTION 15 .39
ALTERNATE 1 1185.70
XSECTION 16 .14
ALTERNATE 1 609.95
XSECTION 17 .53
ALTERNATE 1 1516.86

r

LO ?
LO
?fto

W

I"

i

¦
00"
M
W
1140

OM
V/
Ifto
I
00"
C
r

i

-AA
® ? ??-??n? ?? 1 ? a?,..,c-? ?' ?J - \ _ ^i ? °_• ?--pv ? ? fig 7
zs c I(? )
O C ?? ?? ? T?? , 1 ` v ??- ?"? 1. ? -?_ t? 'i r ? ? '?+-??, ??? ?.?..,,
OD
1 o t',, co w. = L F? .

f
® ! f ice) '(?. t1 ?l i? r ? v . r' J i ? { ?' U
? .; Jl r
ads 1
I.yS oS 01E-YL
1, 2
,/
U -LL

(L L4
zow
Po 0 0201
Li
t?Inti1L - Z. ,UI > (1vo/I o, or, 1Vo? IY?, DS L. , L`
l
roo oZ' 00?, ?
7 .
r

I,.
?i
i.

I
v

119(

- ' ?? I?/ e/1/? ? ? ? ? .? ? ? ? C ? ? ? d? ? ,air (, J ? _,? ?'T.?•..?.? ,?I Sr"_'. , 1
i l
rl
t
? ?ll
El ?10
z8S ??_
= I ,S? ?ol-4-o to
Lij
a = /? --? zSs. ? Z ? CS = v C ? g , ?-s- S r
-------------