SW6200704_Calcs_20201125

ENGINEERING - SURVEYING - DESIGNING - DRAFTING
Larry King & Associates, R.L.S., P.A.
P. [phone] vwwv.LKandA.com F. [phone]
Stormwater Wet Pond Design Criteria
Project Name: P19-028 Cypress Point
Outlet: Infil. Basin 1
Calculate Runoff Coefficient
A= 9.00 acres
Ai= 3.70 acres
la= 0.41
Rv=0.05+0.9*la
Rv= 0.42
392,177 sf Watershed area
161,093 sf Impervious area
Impervious fraction
Runoff Coefficient
Calculate Runoff Volume Re aired to be Controlled
Rd= 1 in Design storm rainfall depth (typically 1" or 1.5")
V=3630*Rd*Rv*A
WQV= 13,716 cf Volume of runoff that must be
3.78 Ac in controlled for specified design storm
Proposed C
Total Area= 392,177 sf
Imp Area = 161,093 sf
Pery Area = 231,084 sf
Comp C= 0.55
c value
0.9
0.3
SC-1A

ENGINEERING - SURVEYING - DESIGNING - DRAFTING
Larry King &Associates, R.L.S., P.A.
P. [phone] www.LKandA.com F. [phone]
Anti -Flotation Sizing Calculations
Project Name: P19-028 Cypress Point
Outlet: Infil. Basin 1
Min. Surface Area Required for Infiltration System
SA=FS*(DV*12) / (K+T)
SA= Required Surface Area (sf)
FA= Factor of Safety 2
DV= Design Volume (cf)
K= Infiltration Rate
T= Max Dewatering Time (hrs) 60 hr
DA= 1.6 ac
68,691 sf
Water Quality Volume Required (by Simple Method)
VQV (DV)= 13,716 cf
Ksat= 2.0 in/hr
Surface Area Required to Achieve 3 Day Drawdown
SA= 5309 sf
Drawdown Time for WQV (Main Basin Area)
T= 55.1 hr
SA= 5,769 sf
Drawdown Time Below Overflow (Main Basin Area)
T= 55.6 hr
SA= 5,769 sf
DV= 13,846 cf
SC-1 C

Infil Basin 1.gpw
Hydraflow Hydrographs by Intelisolve
Hydrograph Return Period Recap
i
Wednesday, Nov 25 2020, 10:20 AM
Summary Report ............ ---- ....... ____ ................a... .......... ................... ....... ..................
... 2
ydroraphi Reports ........................................................................................................... 3
Hydrograph No. 1, Rational, Basin 1-Post........................................................................ 3
Hydrograph No. 2, Reservoir, Basin 1 - Post.................................................................... 4
PondReport................................................................................................................. 5
Hydrograph No. 3, Rational, Basin 1 - Pre....................................................................... 6
SummaryReport..., ... ........ . ....... ............... ............................................... ........ ....... ......... .... 7
ydrogiraphReports ........................................................................................................... 8
Hydrograph No. 1, Rational, Basin 1-Post........................................................................ 8
Hydrograph No. 2, Reservoir, Basin 1 - Post.................................................................... 9
PondReport .................... ........................................................................................... 10
Hydrograph No. 3, Rational, Basin 1 - Pre...................................................................... 11
S�ummary Report ...... ..............................,.......................................................................... 12
HydrographReports ......................................................................................................... 13
Hydrograph No. 1, Rational, Basin 1-Post...................................................................... 13
Hydrograph No. 2, Reservoir, Basin 1 - Post.................................................................. 14
PondReport ......................... ...................................................................................... 15
Hydrograph No. 3, Rational, Basin 1 - Pre..................................................................... 16

y
Hyd.
Hydrograph
Inflow
Peak Outflow
(efs)
Hydrograph
No.
type
Hyd(s)
—
..®._._._
_........._
_
description
(origin)
1-Yr
2-Yr
3-Yr
5-Yr
10-Yr
25-Yr
50-Yr
100-Yr
1
Rational
17.17
-------
-------
-------
27.20
30.71
-------
35.87
Basin 1-Post
2
Reservoir
1
13.96
-------
-------
-------
25.68
29.44
-------
34.71
Basin 1 - Post
3
Rational
-------
17.17
-------
-------
-------
27.20
30.71
-------
35.87
Basin 1 - Pre
Proj.
file: Infil Basin
1.gpw
Wednesday,
Nov 25 2020, 10:20 AM
Hydraflow Hydrographs by Intelisolve

Hyd.
Hydrograph
Peak
Time
Time to
Volume
Inflow Maximum
Maximum
Hydrograph
No.
type
flow
interval
peak
hyd(s) elevation
storage
description
(origin)
(cfs)
(min)
(min)
(cuft)
(ft)
(cuft)
1
Rational
17.17
1
47
64,122
---- ------
------
Basin 1-Post
2
Reservoir
13.96
1
61
63,330
1 128.35
29,619
Basin 1 - Post
3
Rational
17.17
1
15
15,451
---- ------
------
Basin 1 - Pre
Infil
Basin 1.gpw
Return
t
Period: 1 Year
Wednesday,
I
i
i
I
i
Nov 25 2020, 10:20 AM
Hydraflow Hydrographs by Intelisolve

Hydrograph Plot
Hydraflow Hydrographs by Intelisolve
Hyd. No. 1
Basin 1-Post
Hydrograph type
= Rational
Storm frequency
= 1 yrs
Drainage area
= 9.000 ac
Intensity
= 3.468 in/hr
OF Curve
= River Bluff.IDF
Basin 1-Post
Wednesday, Nov 25 2020, 10:20 AM
Peak discharge = 17.17 cfs
Time interval = 1 min
Runoff coeff. = 0.55
Tc by User = 15.00 min
Asc/Rec limb fact = 3.11/5.19
Hydrograph Volume = 64,122 cuft
Q (cfs) Hyd. No. 1 -- 1 Yr Q (cfs)
18.00 _... ...... .... 4 ...... _ w ..... ... --- m 18.00
15.00 ... ... 15.00
12.00 r....._,,..m ..�.... ............_w...� _...... -�.._ _. 12.00
-- o
i
i
_._
9.00 - - _ ��.mm...... -. - _.e�_ _..e n. 9.00
6.00 .....m........ . ........ _.. � � ._..�__... �, � ..m....... ..._..._ 6.00
/j/
3.00 ..w .... ....m _ - -- - _. _ , m m... ... . .............. .
3.00
0.00 _.., ... _ .. _ w.. -..__ 0.00
0.0 0.2 0.3 0.5 0.7 0.8 1.0 1.2 1.3 1.5 1.7 1.8 2.0 2.2
Hyd No. 1 Time (hrs)
3

Hydrograph Plot
Hydraflow Hydrographs by Intelisolve
Hyd. No. 2
Basin 1 - Post
Hydrograph type
= Reservoir
Storm frequency
= 1 yrs
Inflow hyd. No.
= 1
Reservoir name
= Basin 1-Post
Storage Indication method used
Basin 1 - Post
Wednesday, Nov 25 2020, 10:20 AM
Peak discharge = 13.96 cfs
Time interval = 1 min
Max. Elevation = 128.35 ft
Max. Storage = 29,619 cuft
Hydrograph Volume = 63,330 cuft
4

Pond Report
5
Hydraflow Hydrographs by Intelisolve Wednesday, Nov 25 2020, 10:20 AM
Pond No. 1 - Basin 1-Post
Pond Data
Pond storage is based on known contour areas. Average end area method used.
Stage / Storage Table
Stage (ft)
Elevation (ft)
Contour area (sgft)
Incr. Storage (cult)
Total storage (cult)
0.00
125.00
6,872
0
0
1,00
126.00
8,211
7,542
7,542
2.00
127.00
9,860
9,036
16,577
3.00
128.00
8,747
9,304
25,881
4.00
129.00
12,696
10,722
36,602
5.00
130.00
14,080
13,388
49,990
Culvert / Orifice Structures
Weir Structures
[A]
[B]
[C]
[D]
[A] [B]
[C]
[D]
Rise (in)
= 0.00
0.00
0.00
0.00
Crest Len (ft)
= 25.00 0.00
0.00
0.00
Span (in)
= 0.00
0.00
0.00
0.00
Crest El. (ft)
= 128.00 0.00
0.00
0.00
No. Barrels
= 0
0
0
0
Weir Coeff.
= 2.60 0.00
0.00
0.00
Invert El. (ft)
= 0.00
0.00
0.00
0.00
Weir Type
= Broad ---
---
---
Length (ft)
= 0.00
0.00
0.00
0.00
Multi -Stage
= No No
No
No
Slope (%)
= 0.00
0.00
0.00
0.00
N-Value
= .000
.000
.000
.000
Orif. Coeff.
= 0.00
0.00
0.00
0.00
Multi -Stage = n/a No No No Exfiltration = 2.000 in/hr (Contour) Tailwater Elev. = 0.00 ft
Note: Culvert/Orifice outflows have been analyzed under inlet and outlet control.
Stage (ft) Stage / Discharge Stage (ft)
5.00 - 5.00
4.00 a „
3.00 - 3.00
2.00 - ................ ...... 2.00
1.00 _ __........n..�_............................�.�......M`.._........ 1.00
0.00 _._............... ...a......... . ... ..... ........... .. 0.00
0.00 20.00 40.00 60.00 80.00 100.00 120.00 140.00 160.00 180.00 200.00
... •- Total Q Discharge (cfs)

Hydrograph Plot
Hydraflow Hydrographs by Intelisolve Wednesday, Nov 25 2020, 10:20 AM
Hyd. No. 3
Basin 1 - Pre
Hydrograph type
= Rational
Peak discharge
= 17.17 cfs
Storm frequency
= 1 yrs
Time interval
= 1 min
Drainage area
= 9.000 ac
Runoff coeff.
= 0.55
Intensity
= 3.468 in/hr
Tc by User
= 15.00 min
OF Curve
= River Bluff.IDF
Asc/Rec limb fact
= 1/1
Q (cfs)
18.00 -
15.00 -
12.00 -
31Z1Z
0.00
0.0 0.1
-m. - -. Hyd No. 3
Hydrograph Volume = 15,451 cuft
Basin 1 - Pre
Hyd. No. 3 --1 Yr
Nill
0.2 0.3 0.3 0.4
Q (cfs)
18.00
15.00
12.00
11 3.00
0.00
0.5
Time (hrs)
6

� , III � � �'' r, M-., : ; i:. �•� - '° ��'�
....... ..._.... .... -----
Hyd.
Hydrograph
Peak Time Time to Volume Inflow
l
I
Maximum
Maximum
Hydrograph
p
No.
a
type
flow interval peak h
p yd(s)
elevation
storage
description
(origin)
(cfs) (min) } (min) (cuft)
(ft)
(cuft)
1
Rational
27.20 1 47 101,580 ----
------
------
Basin 1-Post
2
Reservoir
25.68 1 51 100,336 1
128.53
31,567
I
Basin 1 - Post
3
I
Rational
27.20 1 15 24,477 ----
1
i I
I
I
� I
i
l
j
i
i
------
------
�I
Basin 1 - Pre
i
I
Infil
i
i
i
I i
Basin 1.gpwm
i
i
f
m ... Return Period: 10
Year
I
I
Wednesda
y, Nov 25 2020, 10:20 AM
Hydraflow Hydrographs by Intelisolve

Hydrograph Plot
Hydraflow Hydrographs by Intelisolve
Hyd. No. 1
Basin 1-Post
Hydrograph type
= Rational
Storm frequency
= 10 yrs
Drainage area
= 9.000 ac
Intensity
= 5.494 in/hr
OF Curve
= River Bluff.IDF
Q (cfs)
28.00
24.00
20.00
16.00
12.00
4.00
Basin 1-Post
Hyd. No. 1 -- 10 Yr
Wednesday, Nov 25 2020, 10:20 AM
Peak discharge = 27.20 cfs
Time interval = 1 min
Runoff coeff. = 0.55
Tc by User = 15.00 min
Asc/Rec limb fact = 3.11 /5.19
Hydrograph Volume = 101,580 cuft
Q (cfs)
28.00
24.00
20.00
16.00
12.00
t3 We
4.00
0.00 _11 i i 1 a. ... . . . w I. �l ..- ....... 1 ...- "I J_.
0.00
0.0 0.2 0.3 0.5 0.7 0.8 1.0 1.2 1.3 1.5 1.7 1.8 2.0 2.2
Hyd No. 1 Time (hrs)
8

Hydrograph Plot
Hydraflow Hydrographs by Intelisolve
Wednesday, Nov 25 2020, 10:20 AM
Hyd. No. 2
Basin 1 - Post
Hydrograph type
= Reservoir
Peak discharge
= 25.68 cfs
Storm frequency
= 10 yrs
Time interval
= 1 min
Inflow hyd. No.
= 1
Max. Elevation
= 128.53 ft
Reservoir name
= Basin 1-Post
Max. Storage
= 31,567 cuft
Storage Indication method used. Hydrograph Volume = 100,336 cult
Basin 1 - Post
Q (cfs) Q (cfs)
Hyd. No. 2 -- 10 Yr
28.00 _..- - —m. n...... ..... _...... w...._ .._w_ _. ._.. 28.00
24.00 ................. - -- - — __ . m m.............. -..-- - m........ — 24.00
20.00 .. �.�.� ... , w .� _.. �._._ __.�.... m ....�. _ ... 20.00
16.00 .. ............ . . ...- 16.00
12.00 .. . _ ...... .. . .......... . .. ... ..... .............. . .... - 12.00
8.00 - - -... -- ---- __ _..... - - - — 8.00
4.00 - .. .............. ....w.. . .................................. _..... --- - m ... _ .......... _...-- -- .... ............ ........ — _ 4.00
..w. 0.00
0.00 -,..�� w.��� ...,��...p...--...,,...�,�wrv�.� .�.nw.� .� ....:.��. �.�,,,,,,-. ��. ..�,-...__,�,-,�rvn rv.�.�..µ..M.M. M..M.. ,,�,�,.,,. „�.� w
0.0 1.7 3.3 5.0 6.7 8.3 10.0 11.7 13.3 15.0 16.7
. �_..-m.­ Hyd No. 2 ... ,,,. Hyd No. 1 Time (hrs)
9

Pond Report
10
Hydraflow Hydrographs by Intelisolve
Wednesday, Nov 25 2020, 10:20 AM
Pond No. 1 - Basin 1-Post
Pond Data
Pond storage is based on known contour areas. Average end area method used.
Stage / Storage Table
Stage (ft) Elevation (ft)
Contour area (sqft)
Incr. Storage (cuft)
Total storage (cult)
0.00 125.00
6,872
0
0
1,00 126.00
8,211
7,542
7,542
2.00 127.00
9,860
9,036
16,577
3.00 128.00
8,747
9,304
25,881
4.00 129.00
12,696
10,722
36,602
5.00 130.00
14,080
13,388
49,990
Culvert / Orifice Structures
[A]
[B]
[C]
[D]
Rise (in)
= 0.00
0.00
0.00
0.00
Span (in)
= 0.00
0.00
0.00
0.00
No. Barrels
= 0
0
0
0
Invert El. (ft)
= 0.00
0.00
0.00
0.00
Length (ft)
= 0.00
0.00
0.00
0.00
Slope (%)
= 0.00
0.00
0.00
0.00
N-Value
= .000
.000
.000
.000
Orif. Coeff.
= 0.00
0.00
0.00
0.00
Multi -Stage
= n/a
No
No
No
Stage (ft)
5.00
4.00
3.00
2.00
1.00
0.00
0.00
20.00 40.00 60.00
Total Q
Weir Structures
[A]
[B]
[C]
[D]
Crest Len (ft)
= 25.00
0.00
0.00
0.00
Crest El. (ft)
= 128.00
0.00
0.00
0.00
Weir Coeff.
= 2.60
0.00
0.00
0.00
Weir Type
= Broad
---
---
---
Multi-Stage
= No
No
No
No
Exfiltration = 2.000 in/hr (Contour) Tailwater Elev. = 0.00 ft
Note: Culvert/Orifice outflows have been analyzed under inlet and outlet control.
Stage / Discharge
Stage (ft)
5.00
4.00
3.00
2.00
1.00
0.00
80.00 100.00 120.00 140.00 160.00 180.00 200.00
Discharge (cfs)

Hydrograph Plot
Hydraflow Hydrographs by Intelisolve
Wednesday, Nov 25 2020, 10:20AM
Hyd. No. 3
Basin 1 - Pre
Hydrograph type
= Rational
Peak discharge
= 27.20 cfs
Storm frequency
= 10 yrs
Time interval
= 1 min
Drainage area
= 9.000 ac
Runoff coeff.
= 0.55
Intensity
= 5.494 in/hr
Tc by User
= 15.00 min
OF Curve
= River Bluff.IDF
Asc/Rec limb fact
= 1/1
Q (cfs)
Hydrograph Volume = 24,477 cuft
Q (cfs)
28.00 -- _ �_._ .,m ....e_..emm�.�w.�...... ............._ ._....._....._�_.__....__ _._._. _ 28.00
24.00 ..... .._ .._..- ---- - ^'-_ �.__..m _ .m 24.00
20.00 mw _. _.. _ 20.00
16.00 ...---- - 16.00
C Yryi
J
12.00 7� _ a ��._, ......... _ _....... ...... �.._� _ 12.00
8.00 __.__e._ .. __..._._. �� ...�... .... __.... 8.00
4.00 _ m..........._ ....... W......... - - ---- - ----- _. . 4.00
0.00 0 00
0.0
Basin 1 - Pre
Hyd. No. 3 -- 10 Yr
0.1 0.2 0.3 0.3 0.4 0.5
Hyd No. 3 Time (hrs)

12
Hyd.
Hydrograph
Peak
Time
Time to
Volume
Inflow
Maximum
Maximum
Hydrograph
No.
type
flow
interval
peak
hyd(s)
elevation
storage
description
(origin)
(cfs)
(min)
(min)
(cuft)
(ft)
(cuft)
1
Rational
35.87
1
47
133,964
----
------
------
Basin 1-Post
2
Reservoir
34.71
1
49
132,330
1
128.65
32,855
Basin 1 - Post
3
Rational
35.87
1
15
32,280
----
------
------
Basin 1 - Pre
In iil
Basin 1.gpw
Return
Period: 100
Year
Wednesday,
Nov 25 2020, 10:20 AM
Hydraflow Hydrographs by Intelisolve

Hydrograph Plot
Hydraflow Hydrographs by Intelisolve
Hyd. No. 1
Basin 1-Post
Hydrograph type
= Rational
Storm frequency
= 100 yrs
Drainage area
= 9.000 ac
Intensity
= 7.246 in/hr
OF Curve
= River Bluff.IDF
Basin 1-Post
Wednesday, Nov 25 2020, 10:20 AM
Peak discharge = 35.87 cfs
Time interval = 1 min
Runoff coeff. = 0.55
Tc by User = 15.00 min
Asc/Rec limb fact = 3.11 /5.19
Hydrograph Volume = 133,964 cuft
Q (cfs) Q (cfs)
Hyd. No. 1 -- 100 Yr
40.00 - ......... . , ....... m . ........... .........---....- ----- -- m .._ 40.00
i
30.00 m_,.m, , .w.._... 30.00
i
._.20.00
P
r I
10.00........ -_..... ............. ---- - __ ...., ....... __......... _..... ..... --- -- 10.00
0.00 - ............. . . . .. ...... 0.00
0.0 0.2 0.3 0.5 0.7 0.8 1.0 12 1.3 1.5 1.7 1.8 2.0 2.2
Hyd No. 1 Time (hrs)
13

Hydrograph Plot
Hydraflow Hydrographs by Intelisolve
Wednesday, Nov 25 2020, 10:20 AM
Hyd. No. 2
Basin 1 - Post
Hydrograph type
= Reservoir
Peak discharge
= 34.71 cfs
Storm frequency
= 100 yrs
Time interval
= 1 min
Inflow hyd. No.
= 1
Max. Elevation
= 128.65 ft
Reservoir name
= Basin 1-Post
Max. Storage
= 32,855 cuft
Storage Indication method used. Hydrograph Volume = 132,330 cuft
Q (cfs)
40.00
30.00
20.00
10.00
1.5
Hyd No. 2
3.0
Basin 1 - Post
Hyd. No. 2 -- 100 Yr
4.5 6.0
.- Hyd No. 1
7.5 9.0 10.5 12.0 13.5
Q (cfs)
40.00
20.00
10.00
j_ 0.00
15.0
Time (hrs)
14

Pond Report
15
Hydraflow Hydrographs by Intelisolve Wednesday, Nov 25 2020, 10:20 AM
Pond No. 1 - Basin 1-Post
Pond Data
Pond storage is based on known contour areas. Average end area method used.
Stage / Storage Table
Stage (ft)
Elevation (ft)
Contour area (sgft)
Incr. Storage (cult)
Total storage (cuft)
0.00
125.00
6,872
0
0
1.00
126.00
8,211
7,542
7,542
2.00
127.00
9,860
9,036
16,577
3.00
128.00
8,747
9,304
25,881
4.00
129.00
12,696
10,722
36,602
5.00
130.00
14,080
13,388
49,990
Culvert / Orifice
Structures
Weir Structures
[A]
[B]
[C]
[D]
[A] [B]
[C]
[D]
Rise (in)
= 0.00
0.00
0.00
0.00
Crest Len (ft)
= 25.00 0.00
0.00
0.00
Span (in)
= 0.00
0.00
0.00
0.00
Crest El. (ft)
= 128.00 0.00
0.00
0.00
No. Barrels
= 0
0
0
0
Weir Coeff.
= 2.60 0.00
0.00
0.00
Invert El. (ft)
= 0.00
0.00
0.00
0.00
Weir Type
= Broad ---
---
---
Length(ft)
= 0.00
0.00
0.00
0.00
Multi -Stage
= No No
No
No
Slope (%)
= 0.00
0.00
0.00
0.00
N-Value
= .000
.000
.000
.000
Orif. Coeff.
= 0.00
0.00
0.00
0.00
Multi -Stage = n/a No No No Exfiltration = 2.000 in/hr (Contour) Tailwater Elev. = 0.00 ft
Stage (ft)
5.00 -
4.00 -
3.00 -
2.00 -
1.00 -
0.00
0.00
Note: Culvert/Orifice outflows have been analyzed under inlet and outlet control.
Stage / Discharge
20.00
Total Q
40.00 60.00 80.00
Stage (ft)
5.00
4.00
3.00
2.00
1.00
0.00
100.00 120.00 140.00 160.00 180.00 200.00
Discharge (cfs)

Hydrograph Plot
Hydraflow Hydrographs by Intelisolve
Hyd. No. 3
Basin 1 - Pre
Hydrograph type
= Rational
Storm frequency
= 100 yrs
Drainage area
= 9.000 ac
Intensity
= 7.246 in/hr
OF Curve
= River Bluff.IDF
Q (cfs)
40.00
9111If
20.00
10.00
Wednesday, Nov 25 2020, 10:20 AM
Peak discharge = 35.87 cfs
Time interval = 1 min
Runoff coeff. = 0.55
Tc by User = 15.00 min
Asc/Rec limb fact = 1/1
Hydrograph Volume = 32,280 cuft
Basin 1 - Pre
Hyd. No. 3 -- 100 Yr
0.1 0.2 0.3 0.3 0.4
Hyd No. 3
Q (cfs)
40.00
30.00
rm
10.00
0.00
0.5
Time (hrs)
16

Tcable Infil Basin 2.gpw
Hydraflow Hydrographs by Intelisolve Wednesday, Nov 25 2020, 10:20 AM
Hydrograph et rn Period Recap .......... .................................... .... .........................
1 -Year
SummaryReport.................................................................,.......................... .........
HydrographReports ........................................................................................................... 3
Hydrograph No. 1, Rational, Post Dev .............. ...... 3
Hydrograph No. 2, Reservoir, Basin 2 - Post.................................................................... 4
Hydrograph No. 3, Rational, Pre Dev............................................................................... 5
1 - Year
SummaryReport .............................................................................................,.................... 6
HydrographReports ..........____ ........................................................................................... ..
Hydrograph No. 1, Rational, Post Dev ........................
Hydrograph No. 2, Reservoir, Basin 2 - Post.................................................................... 8
Hydrograph No. 3, Rational, Pre Dev............................................................................... 9
90111a _
SummaryReport .......................................... .................. ...................................................... ...... 10
HydrographReports ......................................................................................................... 11
Hydrograph No. 1, Rational, Post Dev............................................................................ 11
Hydrograph No. 2, Reservoir, Basin 2 - Post.................................................................. 12
Hydrograph No. 3, Rational, Pre Dev............................................................................. 13

III
Hydrograph
Inflow
Peak Outflow
(cfs)
Hydrograph
No.
type
Hyd(s)
—_............
.......�_.....
__
R_
_._
description
(origin)
1-Yr
2-Yr
3-Yr
5-Yr
10-Yr
25-Yr
50-Yr
100-Yr
1
Rational
-------
31.59
-------
-------
-------
50.58
57.33
-------
67.31
Post Dev
2
Reservoir
1
26.43
-------
-------
-------
47.53
54.50
-------
64.52
Basin 2 - Post
3
Rational
-------
31.59
-------
-------
-------
50.58
57.33
-------
67.31
Pre Dev
Proj.
file: Infil
Basin 2.pw
Wednesday,
1-
Nov 25 2020, 10:20 AM
Hydraflow Hydrographs by Intelisolve

Hyd.
Hydrograph
Peak
Time
Time to
Volume
Inflow
Maximum
Maximum
Hydrograph
No.
type
flow
interval
peak
hyd(s)
elevation
storage
description
(origin)
(cfs)
(min)
(min)
(tuft)
(ft)
(tuft)
1
Rational
31.59
1
53
133,984
----
------
1 ------
Post Dev
2
Reservoir
26.43
1
67
118,532
1
122.54
57,515
Basin 2 - Post
3
Rational
1
I
1
31.59
I(
1
19
i
36,017
----
------
------
Pre Dev
I
I
i
I
i
f
Infil
f(I
Basin 2.gpw
1
return
Period: 1
t
f
Year
Wednesday,
I
1
i
i
Nov 25 2020, 10:20 AM
Hydraflow Hydrographs by Intelisolve

Hydrograph Plot
Hydraflow Hydrographs by Intelisolve
Hyd. No. 1
Post Dev
Hydrograph type
= Rational
Storm frequency
= 1 yrs
Drainage area
= 19.020 ac
Intensity
= 3.076 in/hr
OF Curve
= River Bluff.IDF
Q (cfs)
35.00
30.00
25.00
20.00
15.00
10.00
AM
Post Dev
Hyd, No. 1 -- 1 Yr
Wednesday, Nov 25 2020, 10:20AM
Peak discharge = 31.59 cfs
Time interval = 1 min
Runoff coeff. = 0.54
Tc by User = 19.00 min
Asc/Rec limb fact = 2.79/4.65
Hydrograph Volume = 133,984 cult
Q (cfs)
35.00
30.00
25.00
20.00
15.00
10.00
5.00
0.00 ...... I I-. --------------- L 0.00
0.0 0.2 0.3 0.5 0.7 0.8 1.0 1.2 1.3 1.5 1.7 1.8 2.0 2.2 2.3 2.5
Time (hrs)
......�.�...�..�..... Hyd No. 1
3

Hydrograph Plot
Hydraflow Hydrographs by Intelisolve
Wednesday, Nov 25 2020, 10:20 AM
Hyd. No. 2
Basin 2 - Post
Hydrograph type
= Reservoir
Peak discharge
= 26.43 cfs
Storm frequency
= 1 yrs
Time interval
= 1 min
Inflow hyd. No.
= 1
Max. Elevation
= 122.54 ft
Reservoir name
= Infil Basin 2
Max. Storage
= 57,515 cuft
Storage Indication method used.
Basin 2 - Post
Hydrograph Volume = 118,532 cuft
Q (cfs)
Hyd. No. 2 -- 1
Yr
Q (cfs)
35.00�---
_..........._....._
..... .................. ..._..... .....
35.00
30.00
------30.00
rye., I
25.00
m 25.00
20.00
_�
.... _.._ �.
._.�.. ......
_----.
...m,.m,��..
20.00
15.00
15.00
10.00
_. - --
- ,.......
10.00
I
h
.........
.. ..... —_ ...__
_ ..._.An.�.. .....
_...—._
5.00
z—
w
0.00
��..� ��� .� ....
0.0
0.3
0.7
1.0
1.3 1.7
2.0 2.3
2.7
3.0
Time
(hrs)
�.�..................... Hyd
No. 2
.,,,o„.,. Hyd
No. 1
4

5
Hydrograph Plot
Hydraflow Hydrographs by Intelisolve Wednesday, Nov 25 2020, 10:20 AM
Hyd. No. 3
Pre Dev
Hydrograph type
= Rational
Peak discharge
= 31.59 cfs
Storm frequency
= 1 yrs
Time interval
= 1 min
Drainage area
= 19.020 ac
Runoff coeff.
= 0.54
Intensity
= 3.076 in/hr
Tc by User
= 19.00 min
OF Curve
= River Bluff.IDF
Asc/Rec limb fact
= 1/1
Q (cfs)
Hydrograph Volume = 36,017 cuft
Q (cfs)
35.00 _. mm_9.. ....m .............. .......... . ......... _..... _......... .......... __.......... 35.00
30.00 ------ ....... 30.00
om°
25.00 .....mm .............
.._. 25.00
�Q
20.00 __._ ..- _ .....fi......... . ........-__..... - �._ _, ...m.,... —.._-. - _ _ 20.00
u�
15.00:.............. ..... 15.00
d k
10.00 .. ......._. ... -- 10.00
. � Y
m ww
5.00 ................. ........ ---.._ ._._. ..-.--..._.._ ..._.._........ 5.00
o^ W�
0.00 _... w ,......�... ____.......m w, 0 00
0.0
Pre Dev
Hyd. No. 3 --1 Yr
0.1 0.2 0.3 0.3 0.4 0.5 0.6
Hyd No. 3
0.7
Time (hrs)

,,,
LKIVALM
Hyd.
Hydrograph
Peak
Time
Time to
Volume
Inflow
Maximum
Maximum
Hydrograph
No.
type
flow
interval
peak
hyd(s)
elevation
storage
description
(origin)
(cfs)
(min)
(min)
(cult)
(ft)
(cuft)
1
Rational
50.58
1
53
214,507
----
------
------
Post Dev
2
Reservoir
47.53
1
58
198,816
1
122.81
62,634
Basin 2 - Post
3
Rational
50.58
1
19
57,663
----
------
------
Pre Dev
Infil
Basin 2.gpw
Return
Period: 10
Year
Wednesday,
Nov 25 2020, 10:20 AM
Hydraflow Hydrographs by Intelisolve

Hydrograph Plot
Hydraflow Hydrographs by Intelisolve
Hyd. No. 1
Post Dev
Hydrograph type
= Rational
Storm frequency
= 10 yrs
Drainage area
= 19.020 ac
Intensity
= 4.925 in/hr
OF Curve
= River Bluff.IDF
Q (cfs)
60.00
10.00
Wednesday, Nov 25 2020, 10:20 AM
Peak discharge = 50.58 cfs
Time interval = 1 min
Runoff coeff. = 0.54
Tc by User = 19.00 min
Asc/Rec limb fact = 2.79/4.65
Hydrograph Volume = 214,507 cuft
Post Dev
Hyd. No. 1 -- 10 Yr
--- _ _ ........n, ...,.�....... ......... ..... .........
d
....... ... ... ....
.f
..... ... ... ..........--- — --- ---- -- -
�n _.�....__._... _..._..__..... ®...... -_____ _..
Q (cfs)
60.00
50.00
40.00
30.00
20.00
0.00 - - 0.00
0.0 0.2 0.3 0.5 0.7 0.8 1.0 1.2 1.3 1.5 1.7 1.8 2.0 2.2 2.3 2.5
Hyd No. 1 Time (hrs)
7

Hydrograph Plot
Hydraflow Hydrographs by Intelisolve
Hyd. No. 2
Basin 2 - Post
Hydrograph type
= Reservoir
Storm frequency
= 10 yrs
Inflow hyd. No.
= 1
Reservoir name
= Infil Basin 2
Storage Indication method used
Q (cfs)
60.00
50.00
40.00
20.00
10.00
Basin 2 - Post
Hyd. No. 2 --10 Yr
Wednesday, Nov 25 2020, 10:20 AM
Peak discharge = 47.53 cfs
Time interval = 1 min
Max. Elevation = 122.81 ft
Max. Storage = 62,634 cuft
Hydrograph Volume = 198,816 cuft
Q (cfs)
60.00
50.00
40.00
30.00
20.00
10.00
0.00 . _ p -... -. �.... 0.00
0.0 0.3 0.7 1.0 1.3 1.7 2.0 2.3 2.7 3.0
Hyd No. 2 °- ...• w.° Hyd No. 1 Time (hrs)
8

Hydrograph Plot
Hydraflow Hydrographs by Intelisolve
Hyd. No. 3
Pre Dev
Hydrograph type
= Rational
Storm frequency
= 10 yrs
Drainage area
= 19.020 ac
Intensity
= 4.925 in/hr
OF Curve
= River Bluff.IDF
Pre Dev
Wednesday, Nov 25 2020, 10:20 AM
Peak discharge = 50.58 cfs
Time interval = 1 min
Runoff coeff. = 0.54
Tc by User = 19.00 min
Asc/Rec limb fact = 1/1
Hydrograph Volume = 57,663 cuft
Q (cfs) Hyd. No. 3 --10 Yr Q (cfs)
60.00 .�............ .......... . -- _ ........ 60.00
50.00 - m.m.............. —_ _ 50.00
40.00 . ._.................. ---- _...__ � . �....... ...... — -� ��k � ......... .. _ ..........� .... 40.00
30.00
20.00 _ ........... ... ---- m.M. _.__. : _.._ 20.00
10.00 _.. ..... .... ....... 10.00
EMI
0.00 . . ....... ........ __..._ m, _ ...... ..... , mm o......
0.00
0.0 0.1 0.2 0.3 0.3 0.4 0.5 0.6 0.7
11-111,11,11, Hyd No. 3 Time (hrs)
9

'UTOOSTITr Me
Hyd.
Hydrograph
Peak
Time
Time to
Volume
Inflow
Maximum
Maximum
Hydrograph
No.
type
flow
interval
peak
hyd(s)
elevation
storage
description
(origin)
(cfs)
(min)
(min)
(cuft)
(ft)
(cuft)
1
Rational
67.31
1
53
285,430
----
------
------
Post Dev
2
Reservoir
64.52
1
57
269,539
1
122.99
66,192
Basin 2 - Post
3
it
I
i
Rational
67.31
1
19
76,729
----
------
------
Pre Dev
I
Infil
Basin 2.gpw
Return
Period: 100
Year
Wednesday,
Nov 25 2020, 10:20 AM
L
Hydraflow Hydrographs by Intelisolve

Hydrograph Plot
Hydraflow Hydrographs by Intelisolve
Hyd. No. 1
Post Dev
Hydrograph type
= Rational
Storm frequency
= 100 yrs
Drainage area
= 19.020 ac
Intensity
= 6.553 in/hr
OF Curve
= River Bluff.IDF
Q (cfs)
70.00
Me 99l
50.00
40.00
10.00
Wednesday, Nov 25 2020, 10:20 AM
Peak discharge = 67.31 cfs
Time interval = 1 min
Runoff coeff. = 0.54
Tc by User = 19.00 min
Asc/Rec limb fact = 2.79/4.65
Hydrograph Volume = 285,430 cuft
Post Dev
Hyd. No. 1 -- 100 Yr
R�
r�
M„w
o
.__....,m
........
.......,,
_......__,,......m
..n_........
.., . ..., v ................._._.
a
Q (cfs)
70.00
50.00
40.00
30.00
20.00
10.00
0.00 _.-....-.1-- ... .w._..._... - _ ...._._....,..Wm_._.µ.µ_ .11-.w-L 0.00
0.0 0.2 0.3 0.5 0.7 0.8 1.0 1.2 1.3 1.5 1.7 1.8 2.0 2.2 2.3 2.5
�....�................ Hyd No. 1 Time (hrs)
11

Hydrograph Plot
Hydraflow Hydrographs by Intelisolve
Wednesday, Nov 25 2020, 10:20AM
Hyd. No. 2
Basin 2 - Post
Hydrograph type
= Reservoir
Peak discharge
= 64.52 cfs
Storm frequency
= 100 yrs
Time interval
= 1 min
Inflow hyd. No.
= 1
Max. Elevation
= 122.99 ft
Reservoir name
= Infil Basin 2
Max. Storage
= 66,192 cuft
Storage Indication method used. Hydrograph Volume = 269,539 cuft
Basin 2 - Post
Q (cfs) Q (cfs)
Hyd. No. 2 -- 100 Yr
70.00 ........ 70.00
60.00 -- ----.._.. - ._ ._.�....... ... �._ __ m__, m,.,e,..m 60.00
�µ^
50.00 50.00
��z I
40.00 - _ - ..._ ��... ........ °��.. - - ----. _ .._............ _ .. -- - 40.00
30.00 _ .:..... _ �.__._....-,... _w....... 30.00
20.00 -- _,.` ........ ---- - 20.00
10.00 .... _. _... _.._ ..... .._..._ - - - - --_ - ........ ..... ....... --- - --- - _ ..._..... 10.00
wµ
OAp 0.00
-,m -rorvrvry . -� -
0.0 0.3 0.7 1.0 1.3 1.7 2.0 2.3 2.7 3.0
Time (hrs)
... m..�....°°°. Hyd No. 2 ���,�,,�,,,,. Hyd No. 1
12

13
Hydrograph Plot
Hydraflow Hydrographs by Intelisolve
Hyd. No. 3
Pre Dev
Hydrograph type
= Rational
Storm frequency
= 100 yrs
Drainage area
= 19.020 ac
Intensity
= 6.553 in/hr
OF Curve
= River BIuff.IDF
Q (cfs)
Wednesday, Nov 25 2020, 10:20 AM
Peak discharge = 67.31 cfs
Time interval = 1 min
Runoff coeff. = 0.54
Tc by User = 19.00 min
Asc/Rec limb fact = 1/1
Hydrograph Volume = 76,729 cuft
Q (cfs)
.... -- _.. .... _.......-. --
� I
... -- - - ..m 60.00 __ _ m._,..........
60.00 �
50.00
........� 50.00
�r
40.00 --._ _............... ...---- _..................�„k �.. 40.00
�en.n.......... ........
h
30.00
d _.
" ...... _... ..M 30.00
20.00 ...... — — _.................... ..... _.__ { ..... — 20.00
n kk j
10.00 _..�.. _ �,__ ..........m .. --
0.00 m. .... 0 00
0.0
Pre Dev
Hyd. No. 3 -- 100 Yr
0.1 0.2 0.3 0.3 0.4 0.5 0.6
Hyd No. 3
0.7
Time (hrs)