20011549 Ver 1_Stormwater Info_20020129

WITHERS &' RAVENEL
ENGINEERS I PLANNERS I SURVEYORS
111 MacKenan Drive
CARY, NORTH CAROLINA, 27511
[phone]
FAX [phone]
TO: Division of Water Quality
1621 Mail Service Center
Raleigh, NC 27699-1650
WE ARE SENDING YOU
? Shop Drawings
? Copy of Letter
® Attached
? Prints
? Change order
IMER (OF
DATE 01/29/02 SOB NO. 201113.00
ATTENTION John Dorne
PHONE # [phone]
RE: Lone Lake Subdivision
? Under separate cover via
? Plans ? Samples
? Diskette ?
the following items:
® Specifications
COPIES DATE NO. DESCRIPTION
1 Stormwater Management Plan - Revision 2
1 Culvert Sizing Calculations Report
2 Sediment Basins 3 and 14

L
THESE ARE TRANSMITTED as checked below:
? For approval ? Approved as submitted
® For your use ? Approved as noted
? As requested ? Returned for corrections
? For review and comment ?
? FOR BIDS DUE 20 ? PRINTS RETURNED AFTER LOAN TO US
ItTRIXT
Enclosed is a copy of the Stormwater Management Plan for Long Lake Subdivision. DWQ
Project No. 01-1549. We have previously submitted this plan to the City of Raleigh
for review. The Revision 2 title is consistent with what we have forwarded to the City
of Raleigh. Additionally in this package we have addressed the comments outlined in your
letter dated December 21, 2001. If you have any questions, please give us a call.
COPY TO:
? Resubmit
? Submit
? Return
copies for approval
copies for distribution
corrected prints
SIGNED: Billy Lee, PE
If enclosures are not as noted, kindly notify us at once.
WITHERS RAVEN EL
ENGINEERS I PLANNERS I SURVEYORS
January 29, 2002
Mr. John Dorney
Division of Water Quality
1621 Mail Service Center
Raleigh, NC 27699-1621
HAND DELIVERED / RECEIVED BY: 3 Q Poo?
RE: Long Lake
DWQ Project No 01-1549
W&R Project No. 201113.0
Dear Mr. Dorney,
In accordance with the approval of 401 water quality certification and additional conditions, WRP, Neuse River
Buffer Rules issued by DWQ on December 21, 2001, we are providing you with the attached information and
following written responses to the conditions associated with this approval. Attachments include the required
Stormwater Management Plan and Calculations. Our written responses are as follows:
1) Deed notifications will be established on all lots containing jurisdictional wetlands and waters or areas
within 50' of all streams and ponds. This restriction will be completed in conjunction with lot
recordation.
2) All stormwater discharges into protected stream buffers shall be directed to sheet flow at non-erosive
velocities in accordance with DWQ requirements. We also reserve the right to utilize DWQ's
alternative level spreader design applications to meet this requirement.
3) The final written Stormwater Management Plan is attached to this correspondence.
4) Sediment basins number 3 and 14 have been revised as indicated on the attached plan.
5) Please see attached report: "Summary of Road Crossing Culvert Calculations" section of the Culvert
Sizing Calculations report for response.
6) The Toscana Drive approvals have been submitted as a separate permit application to both NCDENR-
DWQ and the US Army Corps of Engineers per our previous meetings with the Corps.
7) The Certification of Completion form shall be submitted to DWQ once the work has been completed.
We trust that the attached information will be deemed satisfactory and allow us to proceed with construction.
Please advise if you require additional information or have any questions.
Sincerely,
WITHERS & RAV
Jim Canfield, .E.
JEC/tre
Attachments
cc: Gray Methven - Pulte Home Corporation
Nelson Paul - ECPS, Inc.
K:\01 \01-110\01113\Proj\012502.jd.doc
iii MacKenan Drive i Cary, North Carolina 27511 1 tel: [phone] fax: [phone]oo8 i www.withersravenel.com

Aff/VV/RO/VMLaNTAL CONSULTANTS A/VO PMRM/T SPECIAL/STS
2216 OOSWIV PLACE
RALEIGH, NC 27604
OFF/CE: [phone]
FAX.• (919) 231. 1311
E-MAIL: ngpeuhMmindspring. corn
NEXTEL DIRECT CONNECT.- 1612
REQUEST FOR WRITTEN CONCURRENCE ON EXEMPTION FROM NEUSE RIVER
BUFFER RULES ONLY
March 1, 2002
Ms. Cindy Karoly
Division of Water Quality
401 Wedands Unit
1650 Mail Service Center
Raleigh, North Carolina 27699-1650
MAR 4 20Q
Subject: Long Lake Project
Raleigh, Wake County, North Carolina
DWQ Project Number 01-1549
Dear Ms. Karoly,
This letter is to provide you with a copy of plans for a sewer crossing at the Long Lake Project located in
Raleigh, Wake County, North Carolina. Your office has previously issued a 401 Water Quality
Certification for the Long Lake Project. This sewer crossing is a recent engineering modification and was
not shown on the original plans.
We request your concurrence that this activity is in compliance with Neuse River Buffer Rules. It is our
understanding that non-electrical perpendicular utility lines that disturb less than 40 linear feet of riparian
buffer and have a maintenance corridor of 10 feet or less are exempt.
Please provide a letter indicating concurrence with this finding. Should it be necessary, we will be happy to
meet with NCDWQ staff onsite to review this activity. Thank you for your assistance and please feel free
to call me at [phone] if you have any questions.
Cordially yours,
ECPS, Inc.
4ok
Nelson G. Paul, PWS

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WITHERS & RAVENEL
STORMWATER MANAGEMENT PLAN
REVISION 2
LONG LAKE SUBDIVISION
Raleigh, North Carolina
Prepared for
PULTE HOME CORPORATION
401 Harrison Oaks Boulevard, Suite 250
Cary, North Carolina 27513
By
WITHERS & RAVENEL
111 MacKenan Drive
Cary, North Carolina 27511
January 2002
W&R Project No. 201113.00
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WITHERS ? RAVENEL
STORMWATER MANAGEMENT PLAN
REVISION 2
LONG LAKE SUBDIVISION
Raleigh, North Carolina
Prepared for
PULTE HOME CORPORATION
401 Harrison Oaks Boulevard, Suite 250
Cary, North Carolina 27513
By
WITHERS & RAVENEL
111 MacKenan Drive
Cary, North Carolina 27511
January 2002
W&R Project No. 201113.00
REVISED STORMWATER MANAGEMENT PLAN
LONG LAKE SUBDIVISION
Raleigh, North Carolina
INTRODUCTION
The purpose of this Stormwater Management Plan is to document compliance with the
rules contained within City of Raleigh Stormwater Ordinances and of 15A NCAC
2H.1000 Stormwater Management for the proposed Long Lake Subdivision development
north of Glenwood Avenue between Pinecrest Road and Ebenezer Church Road. This
204.87-acre development is within the headwaters of the Turkey Creek drainage basin.
The combined drainage area evaluated in this study is approximately 675 acres; ± 650
acres drains to Long Lake and +25 acres are below the dam.
Long Lake, formerly Lake Dunnaway, is approximately 18-acres in size and outfalls near
the subject property boundary. It was designed and constructed by the Soil Conservation
Service (SCS) in the late 1950's. The intent of this Stormwater Management Plan is to
utilize this lake for peak attenuation as well as water quality for the proposed
development.
Pre- and post-development peak stormwater discharges of the 2-year 24-hour and 10-year
24 hour storms event have been estimated to demonstrate the lake's outlet structure
satisfies the requirements as outlined in the City of Raleigh Ordinance Sec. 10-9023. For
the pre-development conditions, the following assumptions were incorporated into the
model:
? The Long Lake primary spillway, a riser-barrel structure, was not functioning at
the time the plans were submitted and based on Dam Safety records may have
been clogged during the May 8, 2001 inspection. Therefore, all flow out of the
lake over the past several years passes through the emergency spillway. Further,
the normal pool of the Lake is at the invert of the emergency spillway (elevation
±372.65).
? The existing land use conditions for Cornerstone Park are the state of the land as
of June 24, 2001 (Lots 5, 6, 8, 9 and 10-14 are recently graded; Lots 1,2 and 7 are
cleared). The balance of the area land use is based on zoning.
Long Lake Riser Structure July 12, 2001
Long Lake Subdivision - 1 - January 2002
SWMP Revision 2 W&R Project No. 201113
The post-development land use conditions are assumed to be full build-out for the on-site
areas and existing conditions for off-site areas. The normal pool has been lowered to the
primary spillway riser invert (elevation 368.5). Additionally, water quality design
requirements as outlined in 15A NCAC 2H.1000 for wet detention basins have been
followed such that 85 percent total suspended-solids removal and thus, nitrogen reduction
can be achieved.
METHODOLOGY
As a part of the scope of work for this project, hydrologic and hydraulic analyses of the
drainage basin have been completed. The scope of the analyses included:
Hydrology:
? Simulation of a 2-year and 10-year 24 hour rainfall event for the Raleigh area.
? Formulation of 2-year and 10-year 24 hour flood hydrographs for all drainage
sub-areas.
Hydraulic:
? Routing the 2-year and 10 year 24 hour flood hydrographs through the Long Lake
outlet structure for existing and proposed conditions .
The results of the hydrology analyses are used in the hydraulic analyses. The routing
analysis requires the development of stage-storage functions and stage-discharge
functions for the existing and proposed Long Lake outlet structures. The rainfall/runoff
hydrographs, stage-storage and stage-discharge functions have been combined to compile
a routing computer simulation model using Haestad Methods PondPack v7.5 software.
This PondPack model can then be used to assess the impact of the peak discharges for the
2-year and 10-year rainfall events.
The PondPack computer model analyses results are provided as Appendix A to
this report.
Hydrology
The SCS Method was used to develop runoff hydrographs for the Type II, 24-hour
duration, 2-year and 10-year storm events for the Raleigh area. This method requires
three basic parameters: a curve number (CN), a time of concentration (tc), and drainage
area. Curve numbers were based on soil types and land use. Soil types were delineated
from the Soil Survey of Wake County, North Carolina (November 1970). Land use for
full development conditions was based on field observation, aerial photography, and
zoning maps. Times of concentrations were calculated using the methods described in the
SCS publication "Urban Hydrology for Small Watersheds, TR-55" and were based on
field observation and the Wake County topographic map. Drainage areas were delineated
from the topographic map. A summary of data used to formulate hydrographs and peak
discharges is presented in the PondPack output reports in Appendix A.
Specifically, the drainage area evaluated in this study consists of five main sub-basins as
depicted on the attached drainage delineation map (Figure 1) as 1, 2, 3, L, and Below
Long Lake Subdivision -2- January 2002
SWMP Revision 2. W&R Project No. 201113
Dam. Sub-basin 1 (± 215 acres) includes a majority of off-site area and a very small
portion of Tract 6. Sub-basin 2 (± 84 acres) is almost entirely off-site, but includes a
small portion of Tract 6. Drainage sub-basin 3 (± 34 acres) is made up entirely of off-site
drainage from the western portion of the basin. Sub-basin "L" (± 316 acres) includes all
of Tracts 3, 4, 5 and portions of Tracts 1, 2 & 6, in addition to a large amount of off-site
drainage from northeast of the proposed subdivision. Sub-basin "L" is broken up into on-
site and off-site for the purposes of this evaluation. Sub-basin "Below Dam" (± 25 acres)
accounts for the majority of Tract 2 and a small portion of Tract 1, as well as
approximately 8 acres of off-site drainage. In addition to the five main basins described
above, a small portion of Tract 2 (± 8 acres) drains away from Long Lake, towards the
SE corner of the site. This area is called "Other Area" on the attached map and
throughout this report.
Hydraulics
Computer simulated reservoir routing of the 2-year and 10-year 24 hour storms utilized
stage-storage and stage-discharge functions. Stage-storage functions were derived from
available topographic information and field survey. A nonlinear regression relation for
surface area versus elevation estimates the incremental volume of the basin to the stage or
elevation of the basin. A stage-discharge function was developed for existing condition
using the emergency spillway survey data. The proposed stage-discharge and based on
repairing the dam's primary spillway and retrofitting the riser with a trash rack that will
be used as a water quality device. The emergency spillway will remain as it is, intact.
The proposed condition routing includes a riser-barrel structure and a broad-crest
spillway. "Below Dam" was routed in the PondPack model as a pond with US70 as the
detention structure. This area was routed as it exists and includes approximately 8.5
acres of off-site drainage area. Additionally, there is approximately 8.35 acres that drains
to a separate basin. This separate basin is included in the summary table as "Other Area".
Water Ouality Management
Long Lake outlet structure will be modified to function as a wet detention basin. With the
addition of the proposed trash rack, Long Lake meets all the design requirements for a
Wet Detention Basin, as described in the NC DENR Stormwater Best Management
Practices Manual, April 1999, except for a forebay. The goal will be to remove 85%
Total Suspended Solids and 25% Total Nitrogen from the stormwater runoff from the
proposed subdivision.
The existing outlet structure of Long Lake consists of a 24" diameter CMP riser with a
3.5' x 3.5' concrete box structure poured in place around the pipe. The riser structure
outlets through an 18" RCP barrel through the dam. In addition, there is a broad crest
spillway for the lake. Since the dam and its associated outlet structures were constructed
in the late 1950s, there are several maintenance activities that will be accomplished as
part of this development. The first, which has already been accomplished, is unplugging
the primary spillway riser. Additionally, a new trash rack will be designed and installed
on the riser structure to replace the original one that was made out of timber. Also, a
small leak in the sub-surface drain for the dam will be investigated and repaired as
deemed necessary by physical inspection.
Long Lake Subdivision -3- January 2002
SWMP Revision 2 W&R Project No. 201113
Long Lake Riser Structure July 12, 2001
The Long Lake riser-barrel structure will be retrofitted with a trash rack that will allow
the runoff from the first one-inch of rainfall to be stored and drained down over a 48 to
72 hour period. This configuration was designed for the first flush events using a wet
pond. Runoff from the 1-inch rainfall event for the entire 650-acre drainage basin
tributary to Long Lake is equivalent to approximately 0.78 feet of storage in the lake.
This is based on existing conditions for off-site drainage and full build out conditions on-
site. This meets the requirements for 85 percent total suspended solids removal and
nitrogen reduction for the site. The supporting calculations are included as Appendix B of
this report.
Additional calculations based on full build out of the entire 650-acre drainage basin
indicate that Long Lake is capable of capturing the run off from the 1-inch rainfall event
and is equivalent to approximately 1.1 feet of storage in the lake above normal pool.
Meeting this criteria demonstrates that Long Lake has a significant storage capacity for
the drainage area it serves.
Long Lake Subdivision -4- January 2002
SWMP Revision 2 W&R Project No. 201113
RESULTS
Appendix A contains the PondPack modeling program output reports, which include the
calculations estimating pre- and post-development 2-yr and 10-yr discharge rates.
Pre- and post-development peaks have been calculated -for the outfall-at the property
boundary, as well as for the outfalls of the individual drainage sub-basins (see Appendix
A). For the pre-development conditions, the following assumptions were incorporated
into the model:
? The Long Lake primary spillway was not functioning at the time the plans were
submitted and based on Dam Safety records had not been operating for sometime;
therefore all flow out of the lake passes through the emergency spillway. Further,
the normal pool of the Lake is at the invert of the primary spillway.
? The existing land use conditions for Cornerstone Park are the state of the land as
of June 24, 2001 (Lots 5, 6, 8, 9 and 10-14 are recently Graded; Lots 1-2 and 7 are
Cleared).
The post-development land use conditions are assumed to be full build-out for the on-site
areas and existing conditions for off-site areas. In addition, the existing stage-storage
function and repaired outlet structure for Long Lake were put into the PondPack model as
the control structure to attenuate peak runoff rates for the post-development model. The
results using Long Lake as the stormwater management structure for the proposed
development are summarized in Table 1 below.
Table 1- Pre & Post Peak Discharge Results
With Control Structure for Post-develo ment (Lon Lake

Flow Location Pre-development
2-yr QPeak 10-yr QPeak
cfs) cfs Post-development
2-yr QPeak 10-yr Qpeak
cfs cfs
Lon Lake Outlet 79.15 274.72 20.42 53.31
Below Dam Area 27.59 67.25 56.22 104.91
Property Outfall
Below US70 81.05 278.77 59.89 115.64
Other Area * 2.45 10.57 22.89 39.79
Total Leaving Site 83.50 289.34 82.78 155.43
* Other Area drains away from the Long Lake Outfall towards the SE corner of the site.
The calculations provided in Appendix B demonstrate that with minor modifications to
the outlet structure, Long Lake will effectively function as a Wet Detention Basin to
achieve 85% Total Suspended Solids (TSS) removal as well as detain and slowly release
the runoff from a 1-inch rain event.
With the advent of the Neuse River Basin Nutrient Sensitive Waters Management
Strategy and its associated regulations, Total Nitrogen (TN) removal has become
paramount in stormwater management in the Neuse basin. To meet these requirements,
Long Lake Subdivision -5- January 2002
SWMP Revision 2 W&R Project No. 201113
Long Lake will achieve 25% Total Nitrogen removal for the proposed Long Lake
subdivision (calculations in Appendix B). Further, Long Lake has the potential to serve
as a Regional Water Quality BMP for TN and TSS removal for the entire 650-acre
drainage area. As the Comparison of Total Nitrogen Removal Table in Appendix B
demonstrates, utilizing Long Lake as a Regional Water Quality BMP, there will be over
1 145 pounds per year of Nitrogen removed from the Neuse River basin at full build-out
conditions. Approximately 290 pounds per year of nitrogen are generated from on site.
The balance is off site nitrogen reduction that can be realized if the outlet structure is so
designed. The supporting Nitrogen Reduction calculations are included in Appendix B.
Buffers in the Long Lake Subdivision accomplish additional TN removal. All waterways
subject to the Neuse Riparian Buffer rules will have at least 50 feet of buffer. In
additional, the buffers for Long Lake were originally established based on a normal pool
elevation of 372.65' (the invert elevation of the emergency spillway), when the primary
riser structure was plugged and inoperable. Since the riser has been cleared and is now
functioning, the normal pool is now at 368.5'. Therefore, there is additional buffer at the
edge of the entire Lake based on the original buffer delineation. Further, along the eastern
shore of Long Lake and to the north along the stream there will be a 75 feet greenway
buffer. This will be an additional 25 feet buffer beyond the required 50 feet Neuse River
buffer.
CONCLUSIONS
Based on the routing study performed, the post-development peaks at the property outfall
are less than pre-development levels due to the presence of Long Lake and the repairs
and proposed modifications to the primary spillway. In addition, Long Lake is sufficient
in size to act as a Wet Detention Pond for the proposed Subdivision. With the
modifications proposed in this report, Long Lake will meet all the design requirements
specified in the NC DENR Stormwater Best Manageyneitt Practices Manual for a Wet
Long Lake Subdivision -6- January 2002
SWMP Revision 2 W&R Project No. 201113
Long Lake Drained from Emergency Spillway 372.65 to below 368.5
Detention Basin. Therefore, the proposed stormwater management plan includes the
following:
Proposed Practices
I) Direct discharge of stormwater to Long Lake.
2) Buffers will remain around the lake and streams to treat stormwater from
any pipe outlets and the rear yard areas.
3) Modify Long Lake outlet structure to act as a regional pond for the entire
basin to offset any nitrogen removal loss by not passing site stormwater
through the buffers.
4) Configure the outlet structure to retain the runoff from the first inch of rain
for the entire basin.
5) Long Lake will be modified to removal 85 percent TSS and 25 percent
nitrogen.
It is proposed that the Lake outlet structure be designed to act as a regional water quality
pond. By doing so the Long Lake Subdivision water quality structure would be removing
1 145 pounds of nitrogen a year. This additional removal should be credited and therefore,
meet the requirement of 3.6 pounds of nitrogen per acre per year.
Long Lake View of Emergency Spillway and Riser Structure
Long Lake Subdivision -7- January 2002
SWMP Revision 2 W&R Project No. 201113

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APPENDIX A
PONDPACK MODEL OUTPUT
Long Lake Subdivision January 2002
S WMP Revision 2 W&R Project No. 201113
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LONG LAKE SUBDIVISION
PONDPACK OUTPUT FOR PRE-DEVELOPMENT CONDITIONS
Job File: K:\\01\01-110\01113\H&H\SWMP\PPW\PREEXISTINGWEIR_CORNERSTONE_24JUN01.PPW
Rain Dir: I:\ENGFILE\HAESTAD\PPW RAINFALL DATA\WAKE CO\
Table of Contents
********************** MASTER SUMMARY **********************
Watershed....... Master Network Summary ............. 1.01
********************** TC CALCULATIONS *************** ******
1 ............... Tc Calcs ........................... 2.01
2 ............... Tc Calcs ........................... 2.03
BELOW DAM....... Tc Calcs ........................... 2.05
L ............... Tc Calcs ........................... 2.06
L ON SITE....... Tc Calcs ........................... 2.08
********************** CN CALCULATIONS *************** ******
1 6/24/01....... Runoff CN-Area ..................... 3.01
2 6/24/01....... Runoff CN-Area ..................... 3.01
3 6/24/01....... Runoff CN-Area ..................... 3.02
BELOW DAM....... Runoff CN-Area ..................... 3.02
L OFF 6/24/01... Runoff CN-Area ..................... 3.03
L ON SITE....... Runoff CN-Area ..................... 3.03
*********************** POND VOLUMES ***************** ******
BELOW DAM....... Vol: Elev-Area ..................... 4.01
LONG. LAKE....... Vol:.Elev-Area ..................... 4.02
******************** OUTLET STRUCTURES
PR 10.......... Outlet Input Data .................. 5.01
Composite Rating. Curve ............. 5.04
PR 20.......... Outlet Input.Data .................. 5.05
Composite. Rating. Curve ............. 5.10
**************** ******* POND ROUTING ***********************
BELOW DAM....... Pond E-V-Q Table ................... 6.01
LONG LAKE....... Pond E-V-Q Table ................... 6.05
Long Lake Subdivision -SWMP Revision 2 -Appendix A- January 2002
K:\01\01-110\01113\H&H\SWMP\Revision-Jan2002\PREEXISTINGWEIR-Revision2.doc W&R Project #201113
I
LONG LAKE SUBDIVISION
PONDPACK OUTPUT FOR PRE-DEVELOPMENT CONDITIONS
Type.... Master Network Summary Page 1.01
Name.... Watershed
File.... K:\O1\01-110\01113\H&H\SWMP\PPW\PREEXISTINGWEIR CORNERSTONE 24JUN01.PPW
MASTER DESIGN STORM SUMMARY
Default Network Design Storm File, ID NCWAKE.RNQ Type II
Total
Depth Rainfall
Return Event in Type RNF F ile RNF ID
------------
Pre..2 ------
3.6000 ---------------- -------- -------------
Synthetic Curve SCSTYPES TypeII 24hr ---
Pre.10 5.3800 Synthetic Curve SCSTYPES TypeII 24hr
MASTER NETWORK SUMMARY
SCS Unit Hydrograph Method
(*Node=Outfall; +Node =Diversion;)
(Trun= HYG Truncation: Blank=None; L=Left; R=Rt; LR=Left&Rt)
Max
Return HYG Vol Qpeak Qpeak Max WSEL Pond Storage
Node ID Type
----------------- ---- Event
-
--- - ac-ft Trun
---- hrs cfs ft ac-ft

1
AREA --
2 ----- --
21.432 ---------
12.2800 -------- -------- --
170.54 ----------
1 AREA 10 45.044 12.2800 381.21
2 AREA 2 9.481 12.3000 73.65
2 AREA 10 18.798 12.3000 151.52
3 AREA 2 6.030 12.0100 95.65
3 AREA 10 10.666 12.0000 166.09
BELOW DAM AREA 2 1.879 12.0400 27.59
BELOW DAM AREA 10 4.293 12.0200 67.25
BELOW DAM IN POND 2 49.591 13.7700 81.07
BELOW DAM IN POND 10 118.238 13.2300 279.74
BELOW DAM OUT POND 2 49.571 13.8100 81.05 338.66 .216
BELOW DAM OUT POND 10 118.179 13.3200 278.77 341.18 1.143
J 10 JCT 2 21.432 12.2800 170.54
J 10 JCT 10 45.044 12.2800 381.21
J 20 JCT 2 9.481 12.3000 73.65
J 20 JCT 10 18.798 12.3000 151.52
J 30 JCT 2 6.030 12.0100 95.65
Long Lake Subdivision -SWMP Revision 2 -Appendix A- January 2002
K:\01\01-110\01 113\H&H\SWMP\Revision-Jan2002\PREEXISTINGWEIR_Revision2.doc W&R Project #201113
LONG LAKE SUBDIVISION
PONDPACK OUTPUT FOR PRE-DEVELOPMENT CONDITIONS
Type.... Master Network Summary Page 1.02
Name.... Watershed
File.... K:\01\01-110\01113\H&H\SWMP\PPW\PREEXISTINGWEIR CORNERSTONE 24JUN01.PPW
MASTER NETWORK SUMMARY
SCS Unit Hydrograph Method
(*Node=Outfall; +Node=Diversion;)
(Trun= HYG Truncation: Blank=None; L=Left; R=Rt; LR=Left&Rt)
Max
Return HYG Vol Qpeak Qpeak Max WSEL Pond Storage
Node ID
------------ Type
----- ---- Event
------ ac-ft Trun
---------- -- hrs
--------- cfs
-------- ft
-------- ac-ft
------------
J 30 JCT 10 10.666 12.0000 166.09
L OFFSITE AREA 2 11.731 12.6400 62.72
L OFFSITE AREA 10 26.332 12.5100 156.96
L ON SITE AREA 2 11.588 12.1200 118.98
L ON SITE AREA 10 27.514 12.1200 321.77
LONG LAKE IN POND 2 60.262 12.5100 357.90
LONG LAKE IN POND 10 128.354 12.4600 806.26
LONG LAKE OUT POND 2 47.713 13.8000 79.15 373.76 120.259
ONG LAKE OUT POND 10 113.944 13.2400 274.72 374.73 147.257
*OUT 10 JCT 2 49.571 13.8100 81.05
*OUT 10 JCT 10 118.179 13.3200 278.77
Long Lake Subdivision -SWMP Revision 2 -Appendix A- January 2002
K:\01\01-110\01113\H&H\SWMP\Revision_Jan2002\PREEXISTINGWEIR Revision2.doc W&R Project #201113
LONG LAKE SUBDIVISION
PONDPACK OUTPUT FOR PRE-DEVELOPMENT CONDITIONS
Type.... Tc Calcs Page 2.01
Name.... 1
File.... K:\O1\01-110\01113\H&H\SWMP\PPW\PREEXISTINGWEIR_CORNERSTONE_24JUNOI.PPW
........................................................................
........................................................................
TIME OF CONCENTRATION CALCULATOR
........................................................................
........................................................................
Segment #1: Tc: TR-55 Sheet
Mannings n .0500
Hydraulic Length 60.00 ft
2yr, 24hr P 3.6000 in
Slope .016700 ft/ft
Avg.Velocity .36 ft/sec
Segment #1 Time: .0457 hrs
------------------------------------------------------------------------
Segment #2: Tc: TR-55 Shallow
Hydraulic Length 1779.00 ft
Slope .038800 ft/ft
Unpaved
Avg.Velocity 3.18 ft/sec
Segment #2 Time: .1555 hrs
------------------------------------------------------------------------
Segment #3: Tc: TR-55 Channel
Flow Area
Wetted Perimeter
Hydraulic Radius
Slope. .
Mannings, n
Hydraulic Length
2.0000 sq.ft
3.80 ft
.53 ft.
.025300 ft/ft
.0750
1918.00 ft
Avg.Velocity 2.06.ft/sec
Segment #3 Time: .2586 hrs
------------------------------------------------------------------------
Long lake Subdivision -SWMP Revision 2 -Appendix A- January 2002
K:\01\01-110\01113\H&H\SWMP\Revision_Jan2002\PREEXISTINGWEIR Revision2.doc W&R Project #201113
LONG LAKE SUBDIVISION
PONDPACK OUTPUT FOR PRE-DEVELOPMENT CONDITIONS
Type.... Tc Calcs Page 2.02
Name.... 1
File.... K:\01\01-110\01113\H&H\SWMP\PPW\PREEXISTINGWEIR CORNERSTONE 24JUN01.PPW
Segment #4: Tc: TR-55 Channel
Flow Area
Wetted Perimeter
Hydraulic Radius
Slope
Mannings n
Hydraulic Length
10.9000 sq.ft
10.90 ft
1.00 ft
.015100 ft/ft
.0750
1697.00 ft
Avg.Velocity 2.44 ft/sec
Segment #4 Time:. .1931 hrs
------------------------------------------------------------------------
-------------------------
-------------------------
Total Tc: .6529 hrs
--------------------=----
-------------------------
Long Lake Subdivision -SWMP Revision 2 -Appendix A- January 2002
K:\01\01-110\01I13\H&H\SWMP\Revision-Jan2002\PREEXISTINGWEIR Revision2.doc W&R Project #201113
LONG LAKE SUBDIVISION
PONDPACK OUTPUT FOR PRE-DEVELOPMENT CONDITIONS
Type.... Tc Calcs Page 2.03
Name.... 2
File.... K:\O1\01-110\01113\H&H\SWMP\PPW\PREEXISTINGWEIR CORNERSTONE 24JUNOI.PPW
........................................................................
........................................................................
TIME OF CONCENTRATION CALCULATOR
........................................................................
........................................................................
Segment #1: Tc: TR-55 Sheet
Mannings n
Hydraulic Length
2yr, 24hr P
Slope
Avg.Velocity
.0500
300.00 ft
3.6000 in
.014700 ft/ft
.48 ft/sec
Segment #1 Time: .1741 hrs
------------------------------------------------------------------------
Segment #2: Tc: TR-55 Shallow
Hydraulic Length 1627.00 ft
Slope .028600 ft/ft
Unpaved
Avg.Velocity 2.73 ft/sec
Segment #2 Time: .1656 hrs
------------------------------------------------------------------------
Segment #3: Tc: TR-55 Channel.
Flow Area
Wetted Perimeter
Hydraulic Radius
Slope
Mannings n
Hydraulic Length
1.3000 sq.ft
3.10 ft
.42 ft.
.025400 ft/ft
.0750
1260.00 ft.
. . Avg.Velocity 1.77 ft/sec
Segment #3.Time: .1973 hrs
------------------------------------------------------------------------
Long Lake Subdivision -SWMP Revision 2 -Appendix A- January 2002
K:\01\01-110\01113\H&H\SWMP\Revision_Jan2002\PREEXISTINGWEIR-Revision2.doc W&R Project #201113
LONG LAKE SUBDIVISION
PONDPACK OUTPUT FOR PRE-DEVELOPMENT CONDITIONS
Type.... Tc Calcs Page 2.04
Name.... 2
File.... K:\01\01-110\01113\H&H\SWMP\PPW\PREEXISTINGWEIR CORNERSTONE 24JUN01.PPW
Segment #4: Tc: TR-55 Channel
Flow Area
Wetted Perimeter
Hydraulic Radius
Slope
Mannings n
Hydraulic Length
Avg.Velocity
10.9500 sq.ft
13.25 ft
.83 ft
.018200 ft/ft
.0750
1511.00 ft
2.36 ft/sec
Segment #4 Time: .1778 hrs
------------------------------------------------------------------------
-------------------------
-------------------------
Total Tc: .7149 hrs
-------------------------
-------------------------
Long Lake Subdivision -SWMP Revision 2 -Appendix A- January 2002
K:\01\01-110\01113\H&H\SWMP\Revision-Jan2002\PREEXISTINGWEIR-Revision2.doc W&R Project #201113
LONG LAKE SUBDIVISION
PONDPACK OUTPUT FOR PRE-DEVELOPMENT CONDITIONS
Type.... Tc Calcs Page 2.05
Name.... BELOW DAM
File.... K:\01\01-110\01113\H&H\SWMP\PPW\PREEXISTINGWEIR CORNERSTONE 24JUNOI.PPW
TIME OF CONCENTRATION CALCULATOR
................................
................................
Segment #1: Tc: TR-55 Sheet
Mannings n .0500
Hydraulic Length 195.00 ft
2yr, 24hr P 3.6000 in
Slope .036000 ft/ft
Avg.Velocity .63 ft/sec
Segment #1 Time: .0862 hrs
------------------------------------------------------------------------
Segment #2: Tc: TR-55 Shallow
Hydraulic Length 878.00 ft
Slope ..068000 ft/ft
Unpaved
Avg.Velocity 4.21 ft/sec
Segment #2 Time: .0580 hrs
------------------------------------------------------------------------
Segment #3: Tc: TR-55 Channel
Flow Area 2.0000 sq.ft
Wetted Perimeter 3.80 ft
Hydraulic. Radius .53 ft
Slope .075000 ft/ft
Mannings n .0750
Hydraulic Length 640.00 ft
Avg.Velocity 3.55 ft/sec
Segment #3 Time: .0501. hrs
------------------------------------------------------------------------
-------------------------
-------------------------
Total Tc: .1943 hrs.
-------------------------
-------------------------
Long Lake Subdivision -SWMP Revision 2 -Appendix A- January 2002
K:\01\01-110\01113\H&H\SWMP\Revision_Jan2002\PREEXISTINGWEIR Revision2.doc W&R Project #201113
LONG LAKE SUBDIVISION
PONDPACK OUTPUT FOR PRE-DEVELOPMENT CONDITIONS
Type.... Tc Calcs Page 2.06
Name.... L
File.... K:\01\01-110\01113\H&H\SWMP\PPW\PREEXISTINGWEIR CORNERSTONE 24JW01 .PPW
........................................................................
........................................................................
TIME OF CONCENTRATION CALCULATOR
........................................................................
Segment #1: Tc: TR-55 Sheet
Mannings n
Hydraulic Length
2yr, 24hr P
Slope
Avg.Velocity
.0800
230.00 ft
3.6000 in
.043500 ft/ft
48 ft/sec
Segment #1 Time: .1329 hrs
------------------------------------------------------------------------
Segment #2: Tc: TR-55 Shallow
Hydraulic. Length 910.00.ft
Slope .049500 ft/ft
Unpaved
Avg.Velocity 3.59 ft/sec
Segment #2 Time: .0704 hrs
------------------------------------------------------------------------
Segment #3:. Tc: TR-55 Channel
Flow Area
Wetted Perimeter
Hydraulic. Radius.
Slope. . .
Mannings n
Hydraulic. Length
2.0000 sq.ft
3.80 ft.
.53 ft.
.027600 ft/ft
.0750.
3585.00 ft.
Avg.Velocity 2.15 ft/sec.
Segment #3 Time: .4629 hrs
------------------------------------------------------------------------
Long Lake Subdivision -SWMP Revision 2 -Appendix A- January 2002
K:\01\01-110\01I13\H&H\SWMP\Revision-Jan2002\PREEXISTINGWEIR Revision2.doc W&R Project #201113
LONG LAKE SUBDIVISION
PONDPACK OUTPUT FOR PRE-DEVELOPMENT CONDITIONS
Type.... Tc Calcs
Name.... L
Page 2.07
File.... K:\O1\01-110\01113\H&H\SWMP\PPW\PREEXISTINGWEIR_CORNERSTONE_24JUN01.PPW
Segment #4: Tc: TR-55 Channel
Flow Area
Wetted Perimeter
Hydraulic Radius
Slope
Mannings n
Hydraulic Length
Avg.Velocity
11.0000 sq.ft
13.00 ft
.85 ft
.005700 ft/ft
.0750
1620.00 ft
1.34 ft/sec
Segment #4 Time: .3354 hrs
------------------------------------------------------------------------
Segment #5: Tc: Length & Vel.
Hydraulic Length 2096.00 ft
Avg.Velocity 19.60 ft/sec
Segment #5 Time: .0297 hrs
------------------------------------------------------------------------
-------------------------
-------------------------
Total Tc: 1.0312 hrs
-------------------------
-------------------------
Long Lake Subdivision -SWMP Revision 2 -Appendix A- January 2002
K:\01\01-110\01I13\II&H\SWMP\Revision-Jan2002\PREEXISTINGWEIR Revision2.doc W&R Project #201113
LONG LAKE SUBDIVISION
PONDPACK OUTPUT FOR PRE-DEVELOPMENT CONDITIONS
Type.... Tc Calcs
Name.... L ON SITE
Page 2.08
File.... K:\01\01-110\01113\H&H\SWMP\PPW\PREEXISTINGWEIR_CORNERSTONE_24JUN01.PPW
........................................................................
........................................................................
TIME OF CONCENTRATION CALCULATOR
........................................................................
........................................................................
Segment #1: Tc: TR-55 Sheet
Description: TR-55 Sheet
Mannings n
Hydraulic Length
2yr, 24hr P
Slope
Avg.Velocity
.0500
106.00 ft
3.6000 in
.018900 ft/ft
.43 ft/sec
Segment #1 Time: .0685 hrs
------------------------------------------------------------------------
Segment #2: Tc: TR-55 Shallow
F Description: TR-55 Shallow
Hydraulic Length
Slope
Unpaved
Avg.Velocity
413.00 ft
102000 ft/ft
5.15 ft/sec
Segment #2 Time: .0223. hrs
------------------------------------------------------------------------
Segment #3: Tc: TR-55 Channel.
Description: TR-55 Channel
Flow Area
Wetted Perimeter.
Hydraulic Radius
Slope
Mannings n
Hydraulic. Length
10.9000 sq.ft
10.90 ft.
1.00. ft.
.015100 ft/ft
.0750
2175.00. ft
Avg.Velocity 2.44 ft/sec
Segment #3 Time: .2475 hrs
------------------------------------------------------------------------
Long Lake Subdivision -SWMP Revision 2 -Appendix A- January 2002
K:\01\01-110\01113\H&H\SWMP\Revision_Jan2002\PREEXISTINGWEIR Revision2.doc W&R Project #201113
LONG LAKE SUBDIVISION
PONDPACK OUTPUT FOR PRE-DEVELOPMENT CONDITIONS
Type.... Tc Calcs
Name.... L ON SITE
Page 2.09
File.... K:\O1\01-110\01113\H&H\SWMP\PPW\PREEXISTINGWEIR_CORNERSTONE_24JUN01.PPW
Segment #4: Tc: Length & Vel.
Description: Length & Vel.
Hydraulic Length 2096.00 ft
Avg.Velocity 19.60 ft/sec
Segment #4 Time: .0297 hrs
------------------------------------------------------------------------
-------------------------
-------------------------
Total. Tc: .3680 hrs
-------------------------
-------------------------
Long Lake Subdivision -SWMP Revision 2 -Appendix A- January 2002
K:\01\01-110\01113\H&H\SWMP\Revision-Jan2002\PREEXISTINGWEIR-Revision2.doc W&R Project #201113
LONG LAKE SUBDIVISION
PONDPACK OUTPUT FOR PRE-DEVELOPMENT CONDITIONS
Type.... Tc Calcs Page 2.10
Name.... L ON SITE
File.... K:\01\01-110\01113\H&H\SWMP\PPW\PREEXISTINGWEIR_CORNERSTONE_24JUN01.PPW
------------------------------------------------------------------------
Tc Equations used...
------------------------------------------------------------------------
==== SCS TR-55 Sheet Flow
Tc = (.007 * ((n * Lf)**0.8)) / ((P**.5) * (Sf**.4))
Where: Tc = Time of concentration, hrs
n = Mannings n
Lf = Flow length, ft
P = 2yr, 24hr Rain depth, inches
Sf = Slope, %
==== SCS TR-55 Shallow Concentrated Flow
Unpaved surface:
V = 16.1345 * (Sf**0.5)
Paved surface:
V = 20.3282 * (Sf**0.5).
Tc = (Lf / V) / (3600sec/hr)
Where: V = Velocity, ft/sec
Sf = Slope, ft/ft
Tc = Time of concentration, hrs.
Lf =. Flow length, ft
Long Lake Subdivision -SWMP Revision 2 -Appendix A- January 2002
K:\01\01-110\01I13\H&H\SWMP\Revision_Jan2002\PREEXISTINGWEIR_Revision2.doc W&R Project #201113
LONG LAKE SUBDIVISION
PONDPACK OUTPUT FOR PRE-DEVELOPMENT CONDITIONS
Type.... Tc Calcs
Name.... L ON SITE
Page 2.11
File.... K:\01\01-110\01113\H&H\SWMP\PPW\PREEXISTINGWEIR CORNERSTONE 24JUN01.PPW
___= SCS Channel Flow
R = Aq / Wp
V = (1.49 * (R**(2/3)) * (Sf**-0.5)) / n
Tc = (Lf / V) / (3600sec/hr)
Where: R
Aq
Wp
V
Sf
n
Tc
Lf
Hydraulic radius
Flow area, sq.ft.
Wetted perimeter, ft
Velocity, ft/sec
Slope, ft/ft
Mannings n
Time of concentration, hrs
Flow length, ft
___= User Defined Length & Velocity
Tc = (Lf / V) / (3600sec/hr)
Where: Tc Time of concentration, hrs
Lf = Flow length, ft
V Velocity, ft/sec
Long Lake Subdivision -SWMP Revision 2 -Appendix A- January 2002
K:\01\01-110\01113\H&H\SWMP\Revision-Jan2002\PREEXISTINGWEIR-Revision2.doc W&R Project #201113
LONG LAKE SUBDIVISION
PONDPACK OUTPUT FOR PRE-DEVELOPMENT CONDITIONS
Type.... Runoff CN-Area
Name.... 1 6/24/01
Page 3.01
File.... K:\01\01-110\01113\H&H\SWMP\PPW\PREEXISTINGWEIR_CORNERSTONE_24JUN01.PPW
RUNOFF CURVE NUMBER DATA
Area 1
--------------------------------------------------------------------------
Impervious
Area Adjustment Adjusted
Soil/Surface Description CN acres %C RUC
-
--- CN
------
--------------------------------
Impervious ----
98 ---------
36.580 -----
- 98.00
B Meadow 58 29.260 58.00
B Wooded 55 57.260 55.00
B Graded - Cornerstone 86 10.950 86.00
C Meadow 71 8.450 71.00
C.Wooded 70 36.700 70.00
C Graded - Cornerstone 91 10.870 91.00
D Meadow 78 4.480 78.00
D Wooded 77 22.150 77.00
COMPOSITE AREA & WEIGHTED CN --->
..................................
..................................
.....
..... 216.700
..........
..........
.............
............. 71.92 (72)
.............
.............
Type.... Runoff CN-Area
Name.... 2.6/24/01
File.... K:\O1\01-110\01113\H&H\SWMP\PPW\PREEXISTINGWEIR_CORNERSTONE_24JUN01.PPW
RUNOFF CURVE NUMBER DATA
..........................................................................
..........................................................................
Area 2
--------------------------------------------------------------------------
Impervious
Area Adjustment Adjusted
Soil/Surfa ce. Description CN acres %C RUC
----- CN
------
----------
Impervious ---------------------- ----
98 ---------
1.730 ----- 98.00
B.Wooded 55 25.780 55.00
B Graded - Cornerstone 86 15.640 86.00
B. Cleared - Cornerstone 79 12.600 79.00
C Graded - Cornerstone 91 9.000 91.00
C Cleared - Cornerstone 86 8.190 86.00
D Graded - Cornerstone 94 3.000 94.00
D Cleared - Cornerstone 89 3.160 89.00
COMPOSITE
..........
. .......... AREA & WEIGHTED CN --->
........................
........................
......
...... 79.100
.........
.........
.............
............. 76.04 (76)
.............
.............
Long Lake Subdivision -SWMP Revision 2 -Appendix A- January 2002
K:\01\01-110\01113\H&H\SWMP\Revision-Jan2002\PREEXISTINGWEIR Revision2.doc W&R Project #201113
LONG LAKE SUBDIVISION
PONDPACK OUTPUT FOR PRE-DEVELOPMENT CONDITIONS
Type.... Runoff CN-Area
Name.... 3 6/24/01
Page 3.02
File.... K:\01\01-110\01113\H&H\SWMP\PPW\PREEXISTINGWEIR_CORNERSTONE_24JUN01.PPW
RUNOFF CURVE NUMBER DATA
Area 3
--------------------------------------------------------------------------
Impervious
Area Adjustment Adjusted
Soil/Surface Description CN acres %-C RUC CN
----
------------
Impervious -------------------- ----
98 ---------
12.920 ----- ----- --
98.00
B meadow 58 1.740 58.00
B Cleared - Cornerstone 79 10.250 79.00
C Meadow 71 2.850 71.00
C Wooded 70 1.700 70.00
C Cleared - Cornerstone 86 2.870 86.00
D Meadow 78 .090 78.00
D Cleared - Cornerstone 89 1.980 89.00
COMPOSITE AREA & WEIGHTED CN ---> 34.400 85.12 (85)
Type.... Runoff. CN-Area
Name.... BELOW DAM
File.... K:\01\01-110\01113\H&H\SWMP\PPW\PREEXISTINGWEIR CORNERSTONE_24J M01 .PPW
RUNOFF CURVE. NUMBER DATA
Below Dam
--------------------------------------------------------------------------
Impervious
Area Adjustment. Adjusted
Soil/Surface.Description CN acres %C %UC CN
--------------------------------
Wood B ----
55 ---------
12.740 ----- ----- ------
55.00
Grass B 61 1.070 61.00
Wood C 70 6.570 70.00
.Grass C. 74 .390 74.00
Impervious. 98 4.090 98.00
.COMPOSITE AREA & WEIGHTED CN ---> 24.860 66.59 (67)
Long Lake Subdivision -SWMP Revision 2 -Appendix A- January 2002
K:\01\01-1 10\01 113\H&H\SWMP\RevisionJan2002\PREEXISTINGWEIR Revision2.doc W&R Project #201113
LONG LAKE SUBDIVISION
PONDPACK OUTPUT FOR PRE-DEVELOPMENT CONDITIONS
Type.... Runoff CN-Area
Name.... L OFF 6/24/01
Page 3.03
File.... K:\O1\01-110\01113\H&H\SWMP\PPW\PREEXISTINGWEIR_CORNERSTONE_24JUN01.PPW
RUNOFF CURVE NUMBER DATA
..........................................................................
..........................................................................
L Off-site
--------------------------------------------------------------------------
Area
Soil/Surface Description CN acres
------------------------------
Impervious -- ----
98 ---------
20.800
B Meadow 58 1.660
B Wooded 55 72.050
B Cleared - Cornerstone 79 3.680
B Graded - Cornerstone 86 .110
C Meadow 71 2.730
C Wooded 70 31.550
C Graded - Cornerstone 91 5.160
D Meadow 78 .720
D Wooded 77 8.200
Impervious
Adjustment Adjusted
%C RUC CN
98.00
58.00
55.00
79.00
86.00
71.00
70.00
91.00
78.00
77.00
COMPOSITE AREA & WEIGHTED CN ---> 146.660 67.89 (68)
...........................................................................
...........................................................................
Type.... Runoff CN-Area
Name.... L ON SITE
File.... K:\01\01-110\01113\H&H\SWMP\PPW\PREEXISTINGWEIR_CORNERSTONE_24JUN01.PPW
Title... On site
RUNOFF CURVE NUMBER DATA
.:........................................................................
...........................................................................
L On site
--------------------------------------------------------------------------
Impervious
Area Adjustment. Adjusted
Soil/Surface Description CN acres %C RUC CN
--------------------------------
Impervious ----
98 ---------
22.990 ----- ----- ------
98.00
B Meadow 58 2.220 58.00
B Wooded 55 100.950 55.00
C.Meadow. 71 2.610 71.00.
C Wooded 70 34.990 70.00
D Meadow 78 .720 78.00
D. Wooded 77. 8.260 77.00
COMPOSITE AREA & WEIGHTED CN --->.
..................................
. ..................................
.....
..... 172.740
...........
...........
............
............ 65.19 (65)
.............
.............
Long Lake Subdivision -SWMP Revision 2 -Appendix A- January 2002
K:\01\01-110\01113\H&H\SWMP\Revision-Jan2002\PREEXISTINGWEIR Revision2.doc W&R Project #201113
LONG LAKE SUBDIVISION
PONDPACK OUTPUT FOR PRE-DEVELOPMENT CONDITIONS
Type.... Vol: Elev-Area
Name.... BELOW DAM
Page 4.01
File.... K:\01\01-110\01113\H&H\SWMP\PPW\PREEXISTINGWEIR_CORNERSTONE_24JUN01.PPW
Elevation Planimeter Area Al+A2+sgr(Al*A2) Volume Volume Sum
(ft) (sq.in) (acres)
------------
-- (acres)
---------------- (ac-ft)
---------- (ac-ft)
-------------
------------
336.00 ----
---
----- .0170 .0000 .000 .000
338.00 ----- .1158 .1772 .118 .118
340.00 ----- .3547 .6732 .449 .567
342.00 ----- .8800 1.7934 1.196 1.762
344.00 ----- 1.2920 3.2383 2.159 3.921
348.00 ----- 2.0813 5.0131 6.684 10.606
350.00 ----- 2.3855 6.6950 4.463 15.069
354.00 ----- 2.9510 7.9897 10.653 25.722
356.00 ----- 3.2842 9.3483 6.232 31.954
POND VOLUME EQUATIONS
* Incremental volume computed by the Conic Method for Reservoir Volumes.
Volume = (1/3) * (EL2-EL1) * (Areal + Area2 + sq.rt.(Areal*Area2))
where: ELI, EL2 Lower and upper elevations of the increment
Areal,Area2 = Areas computed for ELI, EL2, respectively
Volume Incremental volume between ELI and EL2
Long take Subdivision -SWMP Revision 2 -Appendix A- January 2002
K:\01\01-110\01113\H&H\SWMP\Revision_Jan2002\PREEXISTINGWEIR Revision2.doc W&R Project #201113
LONG LAKE SUBDIVISION
PONDPACK OUTPUT FOR PRE-DEVELOPMENT CONDITIONS
Type.... Vol: Elev-Area
Name.... LONG LAKE
Page 4.02
File.... K:\01\01-110\01113\H&H\SWMP\PPW\PREEXISTINGWEIR_CORNERSTONE_24JUN01.PPW
Elevation Planimeter Area Al+A2+sgr(A1*A2) Volume Volume Sum
(ft)
------------ (sq.in) (acres)
--------------------- (acres)
---------------- (ac-ft)
---------- (ac-ft)
-------------
368.50 ----- 17.3000 .0000 .000 .000
369.50 ----- 20.0000 55.9011 18.634 18.634
370.50 ----- 22.4000 63.5660 21.189 39.822
371.30 ----- 24.9500 70.9907 18.931 58.753
372.50 ----- 24.8000 74.6249 29.850 88.603
373.50 ----- 25.1000 74.8496 24.950 113.553
374.00 ----- 27.6300 79.0646 13.177 126.731
376.00 ----- 31.2700 88.2937 58.862 185.593
378.00 ----- 35.7700 100.4844 66.990 252.583
POND VOLUME EQUATIONS
* Incremental volume computed by the. Conic. Method for Reservoir Volumes.
Volume = (1/3) * (EL2-EL1) * (Areal + Area2 + sq.rt.(Area1*Area2))
where: EL1, EL2 = Lower and upper elevations of the increment
Areal,Area2 = Areas computed for EL1, EL2, respectively
Volume = Incremental volume between EL1 and EL2
Long Lake Subdivision -SWMP Revision 2 -Appendix A- January 2002
K:\01\01-110\01 113\H&H\SWMP\Revision-Jan2002\PREEXISTINGWEIR-Revision2.doc W&R Project #201113
LONG LAKE SUBDIVISION
PONDPACK OUTPUT FOR PRE-DEVELOPMENT CONDITIONS
Type.... Outlet Input Data Page 5.01
Name.... PR 10
File.... K:\01\01-110\01113\H&H\SWMP\PPW\PREEXISTINGWEIR_CORNERSTONE_24JUN01.PPW
REQUESTED POND WS ELEVATIONS:
Min. Elev.= 368.50 ft
Increment = .25 ft
Max. Elev.= 378.00 ft
**********************************************
OUTLET CONNECTIVITY
**********************************************
---> Forward Flow Only (Upstream to DnStream)
<--- Reverse Flow Only (DnStream to Upstream)
< --- > Forward and Reverse Both Allowed
Structure No. Outfall El, ft E2, ft
--------
-----------------
Weir-XY Points ----
wr -------
---> TW ---------
372.650 -
378.000
Stand Pipe SP ---> CV 378.000 378.000
Culvert-Circular CV ---> TW 346.910 378.000
TW SETUP, DS Channel
Long Lake Subdivision -SWMP Revision 2 -Appendix A- January 2002
K:\01\01-110\01113\H&H\SWMP\Revision-Jan2002\PREEXISTINGWEIR-Revision2.doc W&R Project #201113
LONG LAKE SUBDIVISION
PONDPACK OUTPUT FOR PRE-DEVELOPMENT CONDITIONS
Type.... Outlet Input Data
Name.... PR 10
Page 5.02
File.... K:\O1\01-110\01113\H&H\SWMP\PPW\PREEXISTINGWEIR_CORNERSTONE_24JUN01.PPW
OUTLET STRUCTURE INPUT DATA
Structure ID = wr
Structure Type = Weir-XY Points
------------------------------------
# of openings = 1
WEIR X-Y GROUND POINTS
X, ft
--------- Elev, ft
---------
1039.39 378.00
1057.18 373.28
1094.36 372.65
1109.83 377.01
1141.91 377.57
1145.00 378.00
Lowest Elev. = 372.65 ft
Weir Coeff. 2.800000
Weir TW effects. (Use adjustment equation)
Structure ID = SP
Structure Type
- = Stand Pipe
-----------------
# of openings -------------
= 1 ------
Invert Elev. = 378.00 ft
Diameter = 2.0000 ft
Orifice Area = 3.1416 sq.ft
Orifice Coeff. _ .600
Weir Length = 6.28 ft
Weir Coeff. = 3.100.
K, Submerged _ .000
K, Reverse. _ 1.000
Kb,Barrel = .000000 (per ft of full flow)
Barrel Length _ .00 ft
Mannings n = .0000
Long Lake Subdivision -SWMP Revision 2 -Appendix A- January 2002
K:\01\01-110\01113\H&H\SWMP\Revision-Jan2002\PREEXISTINGWEIR-Revision2.doc W&R Project #201113
LONG LAKE SUBDIVISION
PONDPACK OUTPUT FOR PRE-DEVELOPMENT CONDITIONS
Type.... Outlet Input Data Page 5.03
Name.... PR 10
File.... K:\O1\01-110\01113\H&H\SWMP\PPW\PREEXISTINGWEIR_CORNERSTONE_24JUNOI.PPW
OUTLET STRUCTURE INPUT DATA
Structure ID = CV
Structure Type = Culvert-Circular
------------------
No. Barrels ------------
= 1 ------
Barrel Diameter = 1.5000 ft
Upstream Invert = 346.91 ft
Dnstream Invert = 344.91 ft
Horiz. Length = 143.00 ft
Barrel Length = 143.01 ft
Barrel Slope = .01399 ft/ft
OUTLET CONTROL DATA...
Mannings n = .0260
Ke = .5000
Kb = .072853
Kr = .5000
HW Convergence .001
(forward entrance loss)
(per ft of full flow)
(reverse entrance loss)
+/- ft
INLET CONTROL DATA...
Equation form _ 1
Inlet Control K _ .0098
Inlet Control M _ 2.0000
Inlet. Control c = .03980
Inlet Control Y _ .6700
T1 ratio (HW/D) _ 1.153
T2 ratio (HW/D) _ 1.300
Slope Factor _ -.500
Use unsubmerged inlet.control Form 1 equ. below Ti elev..
Use submerged inlet control. Form 1 equ. above T2 elev.
In transition zone between unsubmerged and submerged inlet control,
interpolate between flows at. T1. & T2...
At. T1 Elev 348.64 ft ---> Flow = 7.58 cfs
At. T2.Elev = 348.86 ft. ---> Flow = 8.66. cfs.
Structure ID = TW
Structure. Type TW SETUP, DS Channel
------------------------------------
FREE OUTFALL CONDITIONS SPECIFIED
CONVERGENCE TOLERANCES...
Maximum Iterations= 30
Min. TW. tolerance = .01 ft
Max. TW tolerance = .01 ft
Min. HW tolerance = .01 ft
Max. HW tolerance = .01 ft
Min. Q tolerance _ .10 cfs
Max. Q tolerance = .10 cfs
Long Lake Subdivision -SWMP Revision 2 -Appendix A- January 2002
K:\01\01-110\01113\H&H\SWMP\Revision-Jan2002\PREEXISTINGWEIR-Revision2.doc W&R Project #201113
LONG LAKE SUBDIVISION
PONDPACK OUTPUT FOR PRE-DEVELOPMENT CONDITIONS
Type.... Composite,Rating Curve
Name.... PR 10
Page 5.04
File.... K:\01\01-110\01113\H&H\SWMP\PPW\PREEXISTINGWEIR_CORNERSTONE_24JUN01.PPW
***** COMPOSITE OUTFLOW SUMMARY ****
WS Elev, Total Q
----------------
Elev. Q
ft cfs
-------- -------
368.50
368.75
369.00
369.25
369.50
369.75
370.00
370.25
370.50
370.75
371.00
371.25
371.50
371.75
372.00
372.25
372.50
372.65
372.75
373.00
373.25
373.50
373.75
374.00
374.25
374.50
374.75
375.00
375.25
375.50
375.75
376.00
376.25
376.50
376.75
377.00
377.25
377.50
377.75
378.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.20
4.49
17.27
43.16
77.43
118.70
166.47
220.47
280.49
346.43
418.19
495.74
579.05
668.11
762.92
863.49
969.84
1082.00
1205.25
1340.39
1491.53
1655.83
-------- Converge
TW Elev Error
ft +/-ft
-------- -----
Free Outfall
Free Outfall
Free Outfall
Free Outfall
Free Outfall
Free Outfall
Free Outfall
Free Outfall
Free Outfall
Free Outfall
Free Outfall
Free Outfall
Free Outfall
Free Outfall
Free Outfall
Free Outfall
Free Outfall
Free. Outfall.
Free Outfall
Free Outfall
Free. Outfall
Free Outfall.
Free Outfall
Free Outfall
Free. Outfall
Free.Outfall
Free Outfall
Free. Outfall
Free. Outfal l
Free.Outfall
Free.Outfall.
Free. Outfall
Free Outfall
Free Outfall
Free Outfall.
Free Outfall
Free. Outfall
Free.Outfall
Free.Outfall
Free Outfall
Notes
-------------------------
Contributing Structures
(no Q: wr,SP,CV)
(no Q: wr,SP,CV)
(no Q: wr,SP,CV)
(no Q: wr,SP,CV)
(no Q: wr,SP,CV)
(no Q: wr,SP,CV)
(no Q: wr,SP,CV)
(no Q: wr,SP,CV)
(no Q: wr,SP,CV)
(no Q: wr,SP,CV)
(no Q: wr,SP,CV)
(no Q: wr,SP,CV)
(no Q: wr,SP,CV)
(no Q: wr,SP,CV)
(no Q: wr,SP,CV)
(no Q: wr,SP,CV)
(no Q: wr,SP,CV)
(no Q: wr,SP,CV)
wr (no Q: SP,CV)
wr (no Q: SP,CV)
wr (no Q: SP,CV)
wr (no Q: SP,CV)
wr (no Q: SP,CV)
wr (no Q: SP,CV)
wr (no. Q: SP,CV)
wr (no Q: SP,CV)
wr (no Q: SP,CV)
wr (no Q: SP,CV)
wr (no Q: SP,CV)
wr (no Q: SP,CV)
wr (no. Q: SP,CV)
wr (no Q: SP,CV)
wr (no Q: SP,CV)
wr (no Q: SP,CV)
wr (no Q: SP,CV)
wr (no Q: SP,CV)
wr (no. Q: SP,CV)
wr (no Q: SP,CV)
wr (no Q: SP,CV)
wr (no Q: SP,CV)
Long Lake Subdivision -SWMP Revision 2 -Appendix A- January 2002
K:\01\01-110\01113\H&H\SWMP\Revision_Jan2002\PREEXISTINGWEIR-Revision2.doc W&R Project #201113
LONG LAKE SUBDIVISION
PONDPACK OUTPUT FOR PRE-DEVELOPMENT CONDITIONS
Type.... Outlet Input Data Page 5.05
Name.... PR 20
File.... K:\01\01-110\01113\H&H\SWMP\PPW\PREEXISTINGWEIR CORNERSTONE 24JUN01.PPW
REQUESTED POND WS ELEVATIONS:
Min. Elev.= 336.00 ft
Increment = .25 ft
Max. Elev.= 356.00 ft
OUTLET CONNECTIVITY
**********************************************
---> Forward Flow Only (UpStream to DnStream)
<--- Reverse Flow Only (DnStream to UpStream)
< --- > Forward and Reverse Both Allowed
Structure No. Outfall E1, ft E2, ft
----------------- ---- ------- --------- ---------
Culvert-Box CV ---> TW 336.700 356.000
Weir-Rectangular WR ---> TW 355.000 356.000
TW SETUP, DS Channel
Long Lake Subdivision -SWMP Revision 2 -Appendix A- January 2002
K:\01\01-110\01 113\H&H\SWMP\Revision-Jan2002\PREEXISTINGWEIR-Revision2.doc W&R Project #201113
LONG LAKE SUBDIVISION
PONDPACK OUTPUT FOR PRE-DEVELOPMENT CONDITIONS
Type.... Outlet Input Data
Name.... PR 20
Page 5.06
File.... K:\O1\01-110\01113\H&H\SWMP\PPW\PREEXISTINGWEIR_CORNERSTONE_24JUN01.PPW
OUTLET STRUCTURE INPUT DATA
Structure ID = CV
Structure Type =
------------------- Culvert-Box
-----------------
No. Barrels = 2
Barrel Height = 6.00 ft
Barrel Width = 6.00 ft
Upstream Invert = 336.70 ft
Dnstream Invert = 335.60 ft
Horiz. Length = 156.00 ft
Barrel Length = 156.00 ft
Barrel Slope = .00705 ft/ft
OUTLET CONTROL DATA ...
Mannings n = .0130
Ke _ .5000 (forward entrance loss)
Kb = .002868 (per ft of full flow)
Kr = .5000 (reverse entrance loss)
HW Convergence _ .001 +/- ft
INLET CONTROL DATA. ..
Equation form _ 2
Inlet Control K = .5150
Inlet Control M = .6670
Inlet Control c = .03750.
Inlet Control Y = .7900
T1 ratio (HW/D) _ 1.188
T2 ratio (HW/D) = 1.386
Slope Factor _ -.500
Use unsubmerged inlet control Form 2 equ. below Tl elev.
Use submerged inlet control Form 2 equ.. above T2 elev.
In transition zone between unsubmerged and submerged inlet. control,.
interpolate between flows at T1 & T2....
At T1 Elev = 343.83 ft ---> Flow 308.64 cfs
At T2 Elev 345.02 ft ---> Flow = 352.73 cfs
Long Lake Subdivision -SWMP Revision 2 -Appendix A- January 2002
K:\01\01-110\01113\H&H\SWMP\Revision-Jan2002\PREEXISTINGWEIR-Revision2.doc W&R Project #201113
LONG LAKE SUBDIVISION
PONDPACK OUTPUT FOR PRE-DEVELOPMENT CONDITIONS
Type.... Outlet Input Data
Name.'... PR 20
Page 5.07
File.... K:\O1\01-110\01113\H&H\SWMP\PPW\PREEXISTINGWEIR_CORNERSTONE_24JUN01.PPW
OUTLET STRUCTURE INPUT DATA
Structure ID
Structure Type
--------------
# of openings
Crest Elev.
Weir Length
Weir Coeff.
WR
Weir-Rectangular
----------------
1
355.00 ft
170.00 ft
2.650000
Weir TW effects (Use adjustment equation)
Structure ID = TW
Structure Type = TW SETUP, DS Channel
------------------------------------
USE DOWNSTREAM CHANNEL NORMAL DEPTH FOR TW...
Channel Type: Chn-Irreg.
Channel ID: PR 20
CONVERGENCE TOLERANCES...
Maximum Iterations= 30
Min. TW tolerance = .01 ft
Max. TW tolerance = .01 ft
Min. HW tolerance = .01 ft.
Max. HW tolerance = .01 ft.
Min. Q tolerance .10 cfs
Max. Q tolerance = .10 cfs
Long Lake Subdivision -SWMP Revision 2 -Appendix A- January 2002
K:\01\01-110\01I 13\H&H\SWMP\Revision-Jan2002\PREEXISTINGWEIR-Revision2.doc W&R Project #201113
LONG LAKE SUBDIVISION
PONDPACK OUTPUT FOR PRE-DEVELOPMENT CONDITIONS
Type.... Outlet Input Data Page 5.08
Name.... PR 20
File.... K:\01\01-110\01113\H&H\SWMP\PPW\PREEXISTINGWEIR_CORNERSTONE_24JUN01.PPW
USE DOWNSTREAM CHANNEL NORMAL DEPTH FOR TW...
Channel Type: Chn-Irreg.
Channel ID: PR 20
COMPOSITE CHANNEL SECTION
Slope = .009730 ft/ft
Elev.Constant= .00 ft
GROUND ELEVATION POINTS
Cross Section ID: PR 20
Lowest Elev. = 335.60 ft.
X Distance Y Elev Y+Constant
(ft)
-
------ (ft)
---------- (ft)
----------
-
--
1000.00 360.00 360.00
1007.00 358.00 358.00
1016.00 356.00 356.00
1029.00 354.00 354.00
1042.00 352.00 352.00
1055.00 350.00 350.00
1067.00 348.00 348.00
1077.00 346.00 346.00
1085.00 344.00 344.00
1098.00 342.00 342.00
1140.00 340.00 340.00.
1148.00 338.00 338.00
1156.00 336.00 336.00
1166.00 335.60 335.60
1176.00 336.00 336.00
1194.00 338.00 338.00.
1207.00 340.00 340.00
1222.00 342.00 342.00
1236.00 344.00 344.00
1243.00 346.00 346.00.
1251.00 348.00 348.00.
1259.00 350.00 350.00
1267.00 352.00 352.00
1275.00 354.00 354.00
1288.00 356.00 356.00
1304.00 358.00 358.00.
1320.00 360.00 360.00
Long Lake Subdivision -SWMP Revision 2 -Appendix A- January 2002
K:\01\01-110\01I13\H&H\SWMP\Revision_Jan2002\PREEXISTINGWEIR_Revision2.doc W&R Project #201113
LONG LAKE SUBDIVISION
PONDPACK OUTPUT FOR PRE-DEVELOPMENT CONDITIONS
Type.... Outlet Input Data
Name.... PR 20
Page 5.09
File.... K:\01\01-110\01113\H&H\SWMP\PPW\PREEXISTINGWEIR_CORNERSTONE_24JUN01.PPW
THE INFORMATION BELOW WAS USED TO COMPUTE
FLOW RATE SEPARATELY FOR EACH SEGMENT.
Cross Section ID: PR 20
CROSS SECTION SUBDIVIDED INTO DIFFERENT SEGMENTS
X Left X Right
Segment (ft) (ft) Ground n Descr.
-------
1 --------
1000.00 --------
1148.00 --------
0.08500 -----------------
Left Overbank
2 1148.00 1194.00 0.07500 Main Channel
3 1194.00 1320.00 0.08500 Right Overbank
Long Lake Subdivision -SWMP Revision 2 -Appendix A- January 2002
K:\01\01-110\01113\H&H\SWMP\Revision-Jan2002\PREEXISTINGWEIR Revision2.doc W&R Project #201113
LONG LAKE SUBDIVISION
PONDPACK OUTPUT FOR PRE-DEVELOPMENT CONDITIONS
Type.... Composite Rating Curve
Name.... PR 20
Page 5.10
File.... K:\O1\01-110\01113\H&H\SWMP\PPW\PREEXISTINGWEIR_CORNERSTONE_24JUN01.PPW
***** COMPOSITE OUTFLOW SUMMARY ****
CUMULATIVE HGL CONVERGENCE ERROR .003 (+/- ft)
FLOW PATH: Elev= 337.75; Branch: WR-TW
* Max. convergence errors shown may also occur for
flow paths other than the ones listed above.
WS Elev, Total Q Notes
-------- -------- -------- Converge --- ----------------------
Elev. Q TW Elev Error
ft cfs ft +/-ft Contributing Structures
---------
--------
336.00 -------
.00 --------
335.60 -----
.000 ----
None -------------
contributing
336.25 .00 335.60 .000 None contributing
336.50 .00 335.60 .000 None contributing
336.70 .00 335.60 .000 None contributing
336.75 .34 335.79 .000 CV
337.00 4.84 336.09 .000 CV
337.25 12.01 336.30 .000 CV
337.50 21.04 336.49 .000 CV
337.75 31.65 336.68 .003 CV
338.00 43.55 336.84 .000 CV
338.25 56.78 337.01 .000 CV
338.50 71.04 337.16 .000 CV
338.75 86.24 337.31 .000 CV
339.00 102.56 337.45 .000 CV
339.25 119.79 337.59 .000 CV
339.50 137.79 337.72 .000 CV
339.75 156.61 337.85 .000 CV
340.00 176.31 337.98 .000 CV
340.25 196.58 338.08 .000 CV
340.50 217.73 338.18 .000 CV
340.75 239.62 338.28 .000 CV
341.00 262.11 338.38 .000 CV
341.25 285.40 338.48 .000 CV
341.50 309.24 338.58 .000 CV
341.75 333.60 338.68 .001 CV
342.00 358.84 338.77 .000. CV
342.25 384.39 338.86 .000 CV
342.50 410.65 338.96 .000 CV
342.75 437.43 339.05 .000 CV
343.00 464.98 339.14 .000 CV
343.25 492.98 339.23 .000 CV
343.50 521.36 339.32 .000 CV
Long Lake Subdivision -SWMP Revision 2 -Appendix A- January 2002
K:\O 1\0 1 -11 0\0 I I13\H&H\SWMP\Revision-Jan2002\PREEXISTINGWEIR Revision2.doc W&R Project #201113
LONG LAKE SUBDIVISION
PONDPACK OUTPUT FOR PRE-DEVELOPMENT CONDITIONS
Type.... Composite Rating Curve
Name.... PR 20
Page 5.11
File.... K:\O1\01-110\01113\H&H\SWMP\PPW\PREEXISTINGWEIR_CORNERSTONE_24JUN01.PPW
***** COMPOSITE OUTFLOW SUMMARY ****
CUMULATIVE HGL CONVERGENCE ERROR .003 (+/- ft)
FLOW PATH: Elev= 337.75; Branch: WR-TW
* Max. convergence errors shown may also occur for
flow paths other than the ones listed above.
WS Elev, Total Q Notes
-------- -------- -------- Converge -------------------------
Elev. Q TW Elev Error
ft cfs ft +/-ft Contributing Structures
----------------------
--------
343.75 -------
550.37 --------
339.41 -----
.000 ----
CV
344.00 579.98 339.50 .000 CV
344.25 609.97 339.58 .000 CV
344.50 640.38 339.67 .000 CV
344.75 671.52 339.75 .000 CV
345.00 703.03 339.84 .000 CV
345.25 727.75 339.90 .000 CV
345.50 751.11 339.97 .000 CV
345.75 773.81 340.02 .000 CV
346.00 795.75 340.08 .000 CV
346.25 817.30 340.14 .000 CV
346.50 838.09 340.19 .000 CV
346.75 858.50 340.24 .000 CV
347.00 878.33 340.29 .000 CV
347.25 897.79 340.33 .000 CV
347.50 916.86 340.38 .000 CV
347.75 935.55 340.42 .000 CV
348.00 953.87 340.46 .000 CV
348.25 971.79 340.50 .000 CV
348.50 989.34 340.54 .000 CV
348.75 1006.70 340.58 .000 CV
349.00 1023.67 340.62 .000 CV
349.25 1040.46 340.65 .000 CV
349.50 1056.96 340.69 .000 CV
349.75. 1073.17 340.72 .000 CV
350.00 1089.10 340.75 .000 CV
350.25. 1104.93 340.79 .000 CV.
350.50 1120.38 340.82 .000 CV
350.75 1135.73 340.85 .000 CV
351.00 1150.89 340.88 .000 CV
351.25 1165.77 340.91 .000 CV
351.50 1180.46 340.94 .000 CV
Long Lake Subdivision -SWMP Revision 2 -Appendix A- January 2002
K:\01\01-110\01113\H&H\SWMP\Revision-Jan2002\PREEXISTINGWEIR-Revision2.doc W&R Project #201113
LONG LAKE SUBDIVISION
PONDPACK OUTPUT FOR PRE-DEVELOPMENT CONDITIONS
Type.... Composite Rating Curve
Name.... PR 20
Page 5.12
File.... K:\01\01-110\01113\H&H\SWMP\PPW\PREEXISTINGWEIR_CORNERSTONE_24JUN01.PPW
***** COMPOSITE OUTFLOW SUMMARY ****
CUMULATIVE HGL CONVERGENCE ERROR .003 (+/- ft)
FLOW PATH: Elev= 337.75; Branch: WR-TW
* Max. convergence errors shown may also occur for
flow paths other than the ones listed above.
WS Elev, Total Q
Elev. Q
ft cfs
--------
351.75 -------
1195.05
352.00 1209.45
352.25 1223.66
352.50 1237.68
352.75 1251.60
353.00 1265.34
353.25 1278.88
353.50 1292.32
353.75 1305.58
354.00 1318.84
354.25 1331.81
354.50 1344.78
354.75 1357.56
355.00 1370.24
355.25 1439.03
355.50 1554.41
355.75 1699.88.
356.00 1869.71
------- Convert
TW Elev Error
ft +/-ft
------- -----
340.96 .000
340.99 .000
341.02 .000
341.05 .000
341.07 .000.
341.10 .000
341.12 .000
341.15 .000.
341.17. .000
341.19 .000
341.22 .000
341.24 .000.
341.26 .000.
341.29 .000
341.40 .000
341.59 .000
341.82 .000.
342.06 .000
Notes
?e -----------------------
Contributing Structures
------------------------
CV
CV
CV
CV
CV
CV
CV
CV
CV
CV
CV
CV
CV
CV +WR
CV +WR
CV +WR
CV +WR
CV +WR
Long Lake Subdivision -SWMP Revision 2 -Appendix A- January 2002
K:\01\01-110\01113\H&H\SWMP\Revision_Jan2002\PREEXISTINGWEIR Revision2.doc W&R Project #201113
LONG LAKE SUBDIVISION
PONDPACK OUTPUT FOR PRE-DEVELOPMENT CONDITIONS
Type.... Pond E-V-Q Table Page 6.01
Name.... BELOW DAM
File.... K:\01\01-110\01113\H&H\SWMP\PPW\PREEXISTINGWEIR_CORNERSTONE_24JUN01.PPW
LEVEL POOL ROUTING DATA
HYG Dir = K:\01\01-110\01113\H&H\SWMP\PPW\
Inflow HYG file = NONE STORED - BELOW DAM IN Pre..2
Outflow HYG file = NONE STORED - BELOW DAM OUT Pre..2
Pond Node Data = BELOW DAM
Pond Volume Data = BELOW DAM
Pond Outlet Data = PR 20
No. Infiltration
INITIAL CONDITIONS
---------
Starting ------------
WS Elev = ---------
336.00 ---
ft -
Starting Volume = .000 ac- ft
Starting Outflow = .00 cfs
Starting Infiltr. _ .00 cfs
Starting Total Qout= .00 cfs
Time Increment = .0100 hrs
Elevation Outflow Storage. Area Infilt. Q Total 2S/t + 0
ft cfs ac-ft acres cfs cfs cfs
----------
336.00 ------------
.00 ---------
.000 ---- --------
.0170 -----------
.00 ------------
.00 ----------
.00
336.25 .00 .005 .0245 .00 .00 12.49
336.50 .00 .012 .0334 .00 .00 29.96
336.70 .00 .020 .0416 .00 .00 48.07
336.75 .34 .022 .0437 .00 .34 53.57
337.00 4.84 .034 .0554 .00 4.84 87.98
337.25 12.01 .050 .0684 .00 12.01 132.54
337.50 21.04 .069 .0828 .00 21.04 187.25
337.75 31.65 .091 .0986 .00 31.65 252.69
338.00 43.55 .118 .1158 .00 43.55 329.38
338.25 56.78 .150 .1385 .00 56.78 419.45
338.50 71.04 .188 .1633 .00 71.04 524.91
338.75 86.24 .232 .1901 .00 86.24 646.92
339.00 102.56 .283 .2190 .00 102.56 786.88
339.25 119.79 .341 .2498 .00 119.79. 945.82
339.50 137.79 .408 .2828 .00 137.79 1124.83
339.75. 156.61 .483 .3177 .00 156.61 1325.18
340.00 176.31 .567 .3547 .00 176.31 1548.19
340.25 196.58 .662 .4075 .00 196.58 1798.85
340.50 217.73 .771 .4640 .00 217.73 2083.46
340.75 239.62 .894 .5242 .00 239.62 2404.10
341.00 262.11 1.033 .5880 .00 262.11 2762.85
341.25 285.40 1.189 .6555 .00 285.40 3162.12.
Long Lake Subdivision -SWMP Revision 2 -Appendix A- January 2002
K:\01\01-110\01I13\H&H\SWMP\Revision-Jan2002\PREEXISTINGWEIR-Revision2.doc W&R Project #201113
LONG LAKE SUBDIVISION
PONDPACK OUTPUT FOR PRE-DEVELOPMENT CONDITIONS
Type.... Pond E-V-Q Table Page 6.02
Name.... BELOW DAM
File.... K:\01\01-110\01113\H&H\SWMP\PPW\PREEXISTINGWEIR_CORNERSTONE_24JUN01.PPW
LEVEL POOL ROUTING DATA
HYG Dir = K:\01\01-110\01113\H&H\SWMP\PPW\
Inflow HYG file = NONE STORED - BELOW DAM IN Pre..2
Outflow HYG file = NONE STORED - BELOW DAM OUT Pre..2
Pond Node Data = BELOW DAM
Pond Volume Data = BELOW DAM
Pond Outlet Data = PR 20
No Infiltration
INITIAL CONDITIONS
---------
Starting ------------
WS Elev = --------
336.00 -----
ft
Starting Volume = .000 ac-ft
Starting Outflow = .00 cfs
Starting Infiltr. _ .00 cfs
Starting Total Qout= .00 cfs
Time Increment = .0100 hrs
Elevation Outflow Storage Area Infilt. Q Total 2S/t + O
ft cfs ac-ft acres cf s cfs
-
------ cfs
----------
----------
341.50 ------------
309.24 ---------
1.361 ------------
.7267 -----------
.00 --
---
309.24 3603.89
341.75 333.60 1.552 .8015 .00 333.60 4090.34
342.00 358.84 1.762 .8800 .00 358.84 4624.06
342.25 384.39 1.988 .9272 .00 384.39 5196.22
342.50 410.65 2.226 .9756 .00 410.65 5798.01
342.75 437.43 2.476 1.0253 .00 437.43 6429.99
343.00 464.98 2.739 1.0761 .00 464.98 7093.15
343.25 492.98 3.014 1.1283 .00 492.98 7787.92
343.50 521.36 3.303 1.1816 .00 521.36 8514.97
343.75 550.37 3.605 1.2362 .00 550.37 9275.30
344.00 579.98 3.921 1.2920 .00 579.98 10069.62
344.25 609.97 4.250 1.3358 .00 609.97 10894.50
344.50 640.38 4.589 1.3804 .00 640.38 11746.55
344.75 671.52 4.940 1.4257 .00 671.52 12626.50
345.00 703.03 5.302 1.4718 .00 703.03 13534.47
345.25 727.75 5.676 1.5185 .00 727.75 14463.72.
345.50 751.11 6.062 1.5660 .00 751.11 15420.14
345.75 773.81. 6.459 1.6143 .00 773.81 16404.84
346.00 795.75 6.869 1.6632 .00 795.75 17418.19
346.25 817.30 7.291 1.7129 .00 817.30 18461.00
346.50 838.09 7.725 1.7634 .00 838.09 19533.33
346.75 858.50 8.173 1.8145 .00 858.50 20636.01
347.00 878.33 8.633 1.8664 .00 878.33 21769.30.
Long Lake Subdivision -SWMP Revision 2 -Appendix A- January 2002
K:\01\01-110\01I13\H&H\SWMP\Revision-Jan2002\PREEXISTINGWEIR Revision2.doc W&R Project #201113
LONG LAKE SUBDIVISION
PONDPACK OUTPUT FOR PRE-DEVELOPMENT CONDITIONS
Type.... Pond E-V-Q Table Page 6.03
Name.... BELOW DAM
File.... K:\01\01-110\01113\H&H\SWMP\PPW\PREEXISTINGWEIR CORNERSTONE 24JUN01.PPW
LEVEL POOL ROUTING DATA
HYG Dir = K:\01\01-110\01113\H&H\SWMP\PPW\
Inflow HYG file = NONE STORED - BELOW DAM IN Pre..2
Outflow HYG file = NONE STORED - BELOW DAM OUT Pre..2
Pond Node Data = BELOW DAM
Pond Volume Data = BELOW DAM
Pond Outlet Data = PR 20
No Infiltration
INITIAL CONDITIONS
Starting WS Elev = 336.00 ft
Starting Volume = .000 ac-ft
Starting Outflow = .00 cfs
Starting Infiltr. _ .00 cfs
Starting . Total Qout= .00 cfs
Time Inc rement = .0100 hrs
Elevation Outflow Storage Area Infilt. Q Total 2S/t + O
ft cfs ac-ft acres cfs cfs cfs
----------
347.25 ------------
897.79 ---------
9.106 ------------
1.9190 -----------
.00 ------------
897.79 ----------
22933.82
347.50 916.86 9.592 1.9724 .00 916.86 24130.02
347.75 935.55 10.092 2.0265 .00 935.55 25358.33
348.00 953.87 10.606 2.0813 .00 953.87 26619.21
348.25 971.79 11.130 2.1182 .00 971.79 27907.46
348.50 989.34 11.665 2.1554 .00 989.34 29217.76
348.75 1006.70 12.208 2.1929 .00 1006.70 30550.48
349.00 1023.67 12.761 2.2308 .00 1023.67 31905.62
349.25 1040.46 13.324 2.2690 .00 1040.46 33283.58
349.50 1056.96 13.896 2.3075 .00 1056.96 34684.45
349.75 1073.17 14.477 2.3463 .00 1073.17 36108.43
350.00 1089.10 15.069 2.3855 .00 1089.10 37555.73
350.25 1104.93 15.669 2.4191 .00. . . 1104.93 39024.93
350.50 1120.38 16.278 2.4529 .00 1120.38. 40514.15
350.75 1135.73 16.896 2.4870 .00 1135.73 42023.80
351.00 1150.89 17.522 2.5212 .00. 1150.89 43553.93
351.25 1165.77 18.157 2.5558 .00 1165.77 45104.59.
351.50 1180.46 18.800 2.5905 .00 1180.46 46676.01
351.75 1195.05 19.452 2.6255 .00 1195.05 48268.45
352.00 1209.45 20.113 2.6607 .00 1209.45 49881.92.
352.25 1223.66 20.782 2.6962 .00 1223.66 51516.59
352.50 1237.68 21.461 2.7319 .00 1237.68 53172.61
352.75 1251.60 22.148 2.7678 .00 1251.60 54850.18.
Long Lake Subdivision -SWMP Revision 2 -Appendix A- January 2002
K:\01\01-110\01113\EI&H\SWMP\Revision-Jan2002\PREEXISTINGWEIR Revision2.doc W&R Project #201113
LONG LAKE SUBDIVISION
PONDPACK OUTPUT FOR PRE-DEVELOPMENT CONDITIONS
Type.... Pond E-V-Q Table Page 6.04
Name.... BELOW DAM
File.... K:\01\01-110\01113\H&H\SWMP\PPW\PREEXISTINGWEIR_CORNERSTONE_24JUN01.PPW
LEVEL POOL ROUTING DATA
HYG Dir = K:\01\01-110\01113\H&H\SWMP\PPW\
Inflow HYG file = NONE STORED - BELOW DAM IN Pre..2
Outflow HYG file = NONE STORED - BELOW DAM OUT Pre..2
Pond Node Data = BELOW DAM
Pond Volume Data = BELOW DAM
Pond Outlet Data = PR 20
No Infiltration
INITIAL CONDITIONS
Starting WS Elev = 336.00 ft
Starting Volume = .000 ac- ft
Starting Outflow = .00 cfs
Starting Infiltr. _ .00 cfs
Starting Total Qout= .00 cfs
Time Inc rement = .0100 hrs
Elevation Outflow Storage Area Infilt. Q Total 2S/t + O
ft cfs ac-ft
- acres cfs cfs cfs
----------
353.00 ------------
1265.34 ---------
22.845 --
- --------
2.8040 -----------
.00 ------------
1265.34 ----------
56549.38
353.25 1278.88 23.550 2.8404 .00 1278.88 58270.33
353.50 1292.32 24.265 2.8770 .00 1292.32 60013.29.
353.75 1305.58 24.989 2.9139 .00 1305.58 61778.28
354.00 1318.84 25.722 2.9510 .00 1318.84 63565.66
354.25 1331.81 26.465 2.9917 .00 1331.81 65376.27
354.50 1344.78 27.218 3.0326 .00 1344.78 67211.58
354.75 1357.56 27.981 3.0739 .00 1357.56 69071.56
355.00 1370.24 28.755 3.1154 .00 1370.24 70956.48
355.25 1439.03 29.539 3.1572 .00 1439.03 72922.70
355.50 1554.41 30.333 3.1992 .00 1554.41 74960.87.
355.75 1699.88 31.138 3.2416. .00. 1699.88 77054.67
356.00 1869.71 31.954 3.2842 .00 1869.71 79198.52
Long Lake Subdivision -SWMP Revision 2 -Appendix A- January 2002
K:\01\01-110\01113\H&H\SWMP\Revision-Jan2002\PREEXISTINGWEIR_Revision2.doc W&R Project #201113
LONG, LAKE SUBDIVISION
PONDPACK OUTPUT FOR PRE-DEVELOPMENT CONDITIONS
Type.... Pond E-V-Q Table Page 6.05
Name.... LONG LAKE
File.... K:\01\01-110\01113\H&H\SWMP\PPW\PREEXISTINGWEIR CORNERSTONE 24JUN01.PPW
LEVEL POOL ROUTING DATA
HYG Dir = K:\01\01-110\01113\H&H\SWMP\PPW\
Inflow HYG file = NONE STORED - LONG LAKE IN Pre..2
Outflow HYG file = NONE STORED - LONG LAKE OUT Pre..2
Pond Node Data = LONG LAKE
Pond Volume Data = LONG LAKE
Pond Outlet Data = PR 10
No Infiltration
INITIAL CONDITIONS
Starting WS Elev = 372.65 ft
Starting Volume = 92.326 ac-ft
Starting Outflow = .00 cfs
Starting Infiltr. _ .00 cfs
Starting Total Qout= .00 cfs
.Time Increment = .0100 hrs
Elevation Outflow Storage Area Infilt. Q Total 2S/t + O
ft cfs ac-ft acres cfs cfs cfs
-----------
368.50 -----------
.00 ---------
.000 ------------
17.3000 -----------
.00 ------------
.00 ----------
.00
368.75 .00 4.407 17.9567 .00 .00 10664.52
369.00 .00 8.979 18.6255 .00 .00 21730.01
369.25 .00 13.721 19.3067 .00 .00 33203.89
369.50 .00 18.634 20.0000 .00 .00 45093.53
369.75 .00 23.707 20.5873 .00 .00 57370.75
370.00. .00 28.928 21.1830 .00 .00 70005.82
370.25 .00 34.299 21.7873 .00 .00 83003.91
370.50 .00 39.822 22.4000 .00 .00 96370.11.
370.75 .00 45.520 23.1821 .00 .00 110158.00.
371.00 .00 51.415 23.9777 .00 .00 124423.20.
371.25 .00 57.510 24.7866 .00 .00 139173.70
371.50 .00 63.741 24.9250 .00 .00 154252.50.
371.75 .00 69.968 24.8937 .00 .00 169322.70
372.00 .00 76.188. 24.8625 .00 .00 184373.90.
372.25 .00 82.399 24.8312 .00 .00 199406.20
372.50 .00 88.603 24.8000 .00. .00 214419.70
372.65 .00 92.326 24.8449 .00 .00 223429.90
372.75 .20 94.813 24.8748 .00 .20. 229446.50
373.00 4.49 101.041 24.9498 .00 4.49 244522.70.
373.25. 17.27 107.287 25.0248 .00 17.27 259652.80
373.50 43.16 113.553 25.1000 .00 43.16 274841.50
373.75 77.43 119.984 26.3498 .00 77.43 290437.80
Long Lake Subdivision -SWMP Revision 2 -Appendix A- January 2002
K:\01\01-110\01113\H&H\SWMP\Revision-Jan2002\PREEXISTINGWEIR_Revision2.doc W&R Project #201113
LONG LAKE SUBDIVISION
PONDPACK OUTPUT FOR PRE-DEVELOPMENT CONDITIONS
Type.... Pond E-V-Q Table Page 6.06
Name.... LONG LAKE
File.... K:\01\01-110\01113\H&H\SWMP\PPW\PREEXISTINGWEIR_CORNERSTONE_24JUN01.PPW
LEVEL POOL ROUTING DATA
HYG Dir = K:\01\01-110\01113\H&H\SWMP\PPW\
Inflow HYG file = NONE STORED - LONG LAKE IN Pre..2
Outflow HYG file = NONE STORED - LONG LAKE OUT Pre..2
Pond Node Data = LONG LAKE
Pond Volume Data = LONG LAKE
Pond Outlet Data = PR 10
No Infiltration
INITIAL CONDITIONS
--------
Starting ------------
WS Elev = ----------
372.65 ----
ft
Starting Volume = 92.326 ac-ft
Starting Outflow = .00 cfs
Starting Infiltr. _ .00 cfs
Starting Total Qout= .00 cfs
Time Inc rement = .0100 hrs
Elevation Outflow Storage Area Infilt. Q Total 2S/t + 0
ft cfs ac-ft acres cfs cfs cfs
- ----------
374.00 ------------
118.70 ---------
126.731 ------------
27.6300 -----------
.00 ------------
118.70 ----------
306806.40
374.25 166.47 133.693 28.0727 .00 166.47 323704.10
374.50 220.47 140.767 28.5189 .00 220.47 340876.90
374.75 280.49 147.953 28.9686 .00 280.49 358326.70
375.00 346.43 155.252 29.4219 .00 346.43 376055.60
375.25 418.19 162.664 29.8786 .00 418.19 394065.50.
375.50 495.74 170.191 30.3389 .00 495.74 412358.70
375.75 579.05 177.834 30.8027 .00 579.05 430937.20
376.00 668.11 185.593 31.2700 .00 668.11 449803.00
376.25 762.92 193.479 31.8160 .00 762.92 468981.10
376.50 863.49 201.501 32.3667 .00 863.49 488496.70
376.75. 969.84. 209.662 32.9221 .00 969.84 508352.60
377.00. 1082.00 217.963 33.4822. .00 1082.00 528551.80.
377.25 1205.25 226.404 34.0471 .00 1205.25 549102.40
377.50 1340.39 234.987 34.6167 .00 1340.39 570008.10
377.75 1491.53 243.713 35.1910 .00 1491.53 591275.80
378.00 1655.83 252.583 35.7700 .00 1655.83 612905.60.
Long Lake Subdivision -SWMP Revision 2 -Appendix A- January 2002
K:\01\01-110\01113\H&H\SWMP\Revision-Jan2002\PREEXISTINGWEIR Revision2.doc W&R Project #201113
LONG LAKE SUBDIVISION - Hydrographs for Pre-development Conditions
Hydrograph for 2-yr Event
PRE-DEVELOPMENT -LONG LAKE IN vs OUT
N
LL
Hydrograph for 2-yr Event
PRE-DEVELOPMENT HYDROGRAPHS AT PROPERTY OUTFALL
w
U
LL
Plotted Curves
LONG LAKE IN Pre..2
LONG LAKE OUT Pre..2
Plotted Curves
BELOW DAM Pre..2
LONG LAKE OUT Pre..2
OUTFALL 10 Pre..2
Long Lake Subdivision - SWMP Revision 2 - Appendix A- January 2002
K:\01\01-110\01113\H&H\SWMP\Revision_Jan2002\Revised Graphs_PRE_Revision2.doc W&R Project #201113
8 10 12 14 16 18 20 22 24 26
Time (hrs)
8 10 12 14 16 18 20 22 24 26
Time (hrs)
LONG LAKE SUBDIVISION - Hydrographs for Pre-development Conditions
Hydrograph for 10-yr Event
PRE-DEVELOPMENT- LONG LAKE IN vs OUT
w
Vz
b
LL
Hydrograph for 10-yr Event
PRE-DEVELOPMENT HYDROGRAPHS FOR PROPERTY OUTFALL
N
U
LL
Plotted Curves
LONG LAKE IN Pre.10
LONG LAKE OUT Pre. 10
Plotted Curves
BELOW DAM Pre.10
LONG LAKE OUT Pre.10
OUTFALL 10 Pre.10
Long Lake Subdivision - SWMP Revision 2 - Appendix A- January 2002
K:\01\01-110\01113\H&H\SWMP\Revision_Jan2002\Revised Graphs_PRE_Revision2.doc W&R Project #201113
6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27
Time (hrs)
6 8 10 12 14 16 18 20 22 24 26
Time (hrs)
J

flit-
O
N Q

E
0
O
0
Q
a
0
N
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M
Q
M
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O
J
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0
m

a
za
oz
?W
:R ;4
z?
O
a
O
CIO
z
O
H
V
H
W
a
0
w
w
A
a
O
w
H
F+1
W
A
O
U
Qi
O
a
LONG LAKE SUBDIVISION
PONDPACK OUTPUT FOR POST-DEVELOPMENT CONDITIONS
Job File: K:\01\01-110\01113\H&H\SWMP\PPW\PROPOSED.PPW
Rain Dir: I:\ENGFILE\HAESTAD\PPW RAINFALL DATA\WAKE CO\
Table of Contents
********************** MASTER SUMMARY **********************
Watershed....... Master Network Summary ............. 1.01
********************** TC CALCULATIONS *********************
1 ............... Tc Calcs ........................... 2.01
2 ............... TC Calcs ........................... 2.03
BELOW DAM....... Tc Calcs ........................... 2.05
L ............... Tc Calcs ........................... 2.06
L ON SITE....... Tc Calcs ........................... 2.08
********************** CN CALCULATIONS *************** ******
1 6/24/01....... Runoff CN-Area ..................... 3.01
2 6/24/01....... Runoff CN-Area ..................... 3.01
3 6/24/01. .... Runoff CN-Area ..................... 3.02
BELOW DAM2...... Runoff CN-Area ..................... 3.02
L OFF 6/24/01... Runoff CN-Area ..................... 3.03
L ON 6/24/01.... Runoff CN-Area ..................... 3.03
*********************** POND VOLUMES ***************** ******
BELOW DAM....... Vol: Elev-Area ..................... 4.01
LONG LAKE........ Vol: Elev-Area. ...................... 4.02
******************** OUTLET STRUCTURES.*********************
PR 10.......... Outlet Input.Data ................ 5.01
Composite Rating. Curve ............. 5.04
PR 20.......... Outlet Input Data .................. 5.05
Composite Rating. Curve ............. 5.09
*********************** POND ROUTING ***********************
BELOW. DAM....... Pond E-V-Q Table. ................... 6.01
LONG LAKE....... Pond E-V-Q Table .................... 6.05
Long Lake Subdivision -SWMP Revision 2 -Appendix A- January 2002
K:\01\01-110\01113\11&H\SWMP\Revision-Jan2002\Proposed-Revision2.doc W&R Project #201113
LONG LAKE SUBDIVISION
PONDPACK OUTPUT FOR POST-DEVELOPMENT CONDITIONS
Type.... Master Network Summary Page 1.01
Name.... Watershed
File.... K:\01\01-110\01113\H&H\SWMP\PPW\PROPOSED.PPW
MASTER DESIGN STORM SUMMARY
Default Network Design
Total
Depth
Return Event in
------------ ------
Dev..2 3.6000
Dev.10 5.3800
Storm File, ID NCWAKE.RNQ Type II
Rainfall
Type RNF File RNF ID
---------------- -------- ------------
Synthetic Curve SCSTYPES TypeII 24hr
Synthetic Curve SCSTYPES TypeII 24hr
MASTER NETWORK SUMMARY
SCS Unit Hydrograph Method
(*Node=Outfall; +Node=Diversion;)
(Trun= HYG Truncation: Blank=None; L=Left; R=Rt; LR=Left&Rt)
Return HYG Vol
Node ID
--------- Type Event ac-ft Trun
----
1 ---- ----
AREA ------
2 ----------
21.432
1 AREA 10 45.044
2 AREA 2 9.481
2 AREA 10 18.798
3 AREA 2 6.030
3 AREA 10 10.666
BELOW DAM
BELOW DAM
BELOW DAM
BELOW DAM
BELOW DAM
BELOW DAM
J 10
J 10
J 20
J 20
J 30
AREA
AREA
IN POND
IN POND
OUT POND
OUT POND
JCT
JCT
JCT
JCT
JCT
2 3.555
10 6.685
2 28.888
10 56.393
2 28.868
10 56.315
2 21.432
10 45.044
2 9.481
10 18.798
2 6.030
Max
Qpeak Qpeak Max WSEL Pond Storage
hrs
--------- cfs
--- ft ac-ft

12.2800 -----
170.54 -------- ------------
12.2800 381.21
12.3000 73.65
12.3000 151.52
12.0100 95.65
12.0000 166.09
12.0200 56.22
12.0000 104.91
12.0200 61.33
12.0200 119.72
12.0500 59.89 338.30 .158
12.0500 115.64 339.19 .327
12.2800 170.54
12.2800 381.21
12.3000 73.65
12.3000 151.52
12.0100 95.65
Long Lake Subdivision -SWMP Revision 2 -Appendix A- January 2002
K:\01\01-110\01113\H&H\SWMP\Revision-Jan2002\Proposed_Revision2.doc W&R Project #201113
LONG LAKE SUBDIVISION
PONDPACK OUTPUT FOR POST-DEVELOPMENT CONDITIONS
Type.... Master Network Summary Page 1.02
Name.... Watershed
File.... K:\01\01-110\01113\H&H\SWMP\PPW\PROPOSED.PPW
(*Node=Outfall; +Node=Diversion;)
(Trun= HYG Truncation: Blank=None; L=Left; R=Rt; LR=Left&Rt)
MASTER NETWORK SUMMARY
SCS Unit Hydrograph Method
Qpeak
hrs
12.0000
12.6400
12.5100
12.1200
12.1200
Return HYG Vol
Node ID
-------------- Type
--- ---- Event
------ ac-ft Trun
----------
J 30 JCT 10 10.666
L OFFSITE AREA 2 11.731
L OFFSITE AREA 10 26.332
L ON SITE AREA 2 26.854
L ON SITE AREA 10 49.247
LONG LAKE
LONG LAKE
ONG LAKE
ONG LAKE
*OUT 10
*OUT 10
IN POND
IN POND
OUT POND
OUT POND
JCT
JCT
2 75.528
10 150.087
2 25.333
10 49.708
2 28.868
10 56.315
12.1200
12.1400
20.2400
18.2000
12.0500
12.0500
Max
Qpeak Max WSEL Pond Storage
cfs ft ac-ft
-------- -------- ------------
166.09
62.72
156.96
325.27
593.53
501.40
987.00
20.42
53.31
59.89
115.64
371.14 54.763
373.39 110.844
Long Lake Subdivision -SWMP Revision 2 -Appendix A- January 2002
K:\01\01-110\01113\H&H\SWMP\Revision_Jan2002\Proposed-Revision2.doc W&R Project #201113
LONG LAKE SUBDIVISION
PONDPACK OUTPUT FOR POST-DEVELOPMENT CONDITIONS
Type.... Tc Calcs Page 2.01
Name.... 1
File.... K:\01\01-110\01113\H&H\SWMP\PPW\PROPOSED.PPW
. ................
TIME OF CONCENTRATION CALCULATOR
Segment #1: Tc: TR-55 Sheet
Mannings n
Hydraulic Length
2yr, 24hr P
Slope
Avg.Velocity
.0500
60.00 ft
3.6000 in
.016700 ft/ft
.36 ft/sec
Segment #1 Time: .0457 hrs
------------------------------------------------------------------------
Segment #2: Tc: TR-55 Shallow
Hydraulic. Length 1779.00 ft
Slope .038800 ft/ft
Unpaved
Avg.Velocity 3.18 ft/sec
Segment #2 Time: .1555 hrs
------------------------------------------------------------------------
Segment #3: Tc: TR-55 Channel
Flow Area .
Wetted Perimeter
Hydraulic Radius
Slope
Mannings n
Hydraulic Length
2.0000 sq.ft
3.80 ft
.53 ft
.025300. ft/ft
.0750
1918.00 ft
Avg.Velocity 2.06 ft/sec
Segment #3 Time: .. .2586 hrs
------------------------------------------------------------------------
Long Lake Subdivision -SWMP Revision 2 -Appendix A- January 2002
K:\01\01-110\01113\H&H\SWMP\Revision-Jan2002\Proposed-Revision2.doc W&R Project #201113
LONG LAKE SUBDIVISION
PONDPACK OUTPUT FOR POST-DEVELOPMENT CONDITIONS
Type.... Tc Calcs Page 2.02
Name.... 1
File.... K:\01\01-110\01113\H&H\SWMP\PPW\PROPOSED.PPW
Segment #4: Tc: TR-55 Channel
Flow Area
Wetted Perimeter
Hydraulic Radius
Slope
Mannings n
Hydraulic Length
Avg.Velocity
10.9000 sq.ft
10.90 ft
1.00 ft
.015100 ft/ft
.0750
1697.00 ft
2.44 ft/sec
Segment #4 Time: .1931 hrs
------------------------------------------------------------------------
-------------------------
-------------------------
Total Tc: .6529 hrs
-------------------------
-------------------------
Long Lake Subdivision -SWMP Revision 2 -Appendix A- January 2002
K:\01\01-110\01113\H&H\SWMP\Revision-Jan2002\Proposed-Revision2.doc W&R Project #201113
LONG LAKE SUBDIVISION
PONDPACK OUTPUT FOR POST-DEVELOPMENT CONDITIONS
Type.... Tc Calcs Page 2.03
Name.... 2
File.... K:\01\01-110\01113\H&H\SWMP\PPW\PROPOSED.PPW
........................................................................
........................................................................
TIME OF CONCENTRATION CALCULATOR
........................................................................
........................................................................
Segment #1: Tc: TR-55 Sheet
Mannings n
Hydraulic Length
2yr, 24hr P
Slope
Avg.Velocity
.0500
300.00 ft
3.6000 in
.014700 ft/ft
48 ft/sec
Segment #1 Time: .1741 hrs
------------------------------------------------------------------------
Segment #2: Tc: TR-55 Shallow
Hydraulic. Length 1627.00 ft
Slope .028600 ft/ft.
Unpaved
. Avg.Velocity 2.73 ft/sec
Segment #2 Time: .1656 hrs
------------------------------------------------------------------------
.Segment #3: Tc: TR-55 Channel
Flow Area
Wetted Perimeter
Hydraulic Radius
Slope. ..
Mannings.n
Hydraulic.Length
1.3000 sq.ft
3.10 ft
.42 ft.
.025400 ft/ft
.0750
1260.00 ft
Avg.Velocity 1.77 ft/sec
Segment #3. Time: .1973 hrs.
------------------------------------------------------------------------
Long Lake Subdivision -SWMP Revision 2 -Appendix A- January 2002
K:\01\01-110\01113\H&H\SWMP\Revision-Jan2002\Proposed-Revision2.doc W&R Project #201113
LONG LAKE SUBDIVISION
PONDPACK OUTPUT FOR POST-DEVELOPMENT CONDITIONS
Type.... Tc Calcs Page 2.04
Name.... 2
File.... K:\01\01-110\01113\H&H\SWMP\PPW\PROPOSED.PPW
Segment #4: Tc: TR-55 Channel
Flow Area
Wetted Perimeter
Hydraulic Radius
Slope
Mannings n
Hydraulic Length
Avg.Velocity
10.9500 sq.ft
13.25 ft
.83 ft
.018200 ft/ft
.0750
1511.00 ft
2.36 ft/sec
Segment ##4 Time: .1778 hrs
------------------------------------------------------------------------
-------------------------
-------------------------
Total Tc: .7149 hrs
-------------------------
-------------------------
Long Lake Subdivision -SWMP Revision 2 -Appendix A- January 2002
K:\01\01-110\01113\11&H\SWMP\Revision_Jan2002\Proposed-Revision2.doc W&R Project #201113
LONG LAKE SUBDIVISION
PONDPACK OUTPUT FOR POST-DEVELOPMENT CONDITIONS
Type.... Tc Calcs Page 2.05
Name.... BELOW DAM
File.... K:\01\01-110\01113\H&H\SWMP\PPW\PROPOSED.PPW
...........................
TIME OF CONCENTRATION CALCULATOR
Segment #1: Tc: TR-55 Sheet
Mannings n
Hydraulic Length
2yr, 24hr P
Slope
Avg.Velocity
.0500
195.00 ft
3.6000 in
.036000 ft/ft
63 ft/sec
Segment #1 Time: .0862 hrs
------------------------------------------------------------------------
Segment #2: Tc: TR-55 Shallow
Hydraulic Length 878.00 ft
Slope .068000 ft/ft
Unpaved
. Avg.Velocity 4.21 ft/sec
Segment #2 Time: .0580 hrs
------------------------------------------------------------------------
Segment #3: Tc: TR-55 Channel
Flow Area.
Wetted Perimeter
Hydraulic. Radius
Slope
Mannings n
Hydraulic. Length
2.0000 sq.ft
3.80 ft.
.53 ft
.075000 ft/ft
.0750
640.00 ft.
Avg.Velocity 3.55 ft/sec
Segment #3 Time: .0501 hrs
------------------------------------------------------------------------
-------------------------
Total Tc: .1943 hrs
-------------------------
Long Lake Subdivision -SWMP Revision 2 -Appendix A- January 2002
K:\01\01:110\01113\H&H\SWMP\Revision-Jan2002\Proposed-Revision2.doc W&R Project #201113
LONG LAKE SUBDIVISION
PONDPACK OUTPUT FOR POST-DEVELOPMENT CONDITIONS
Type.... Tc Calcs Page 2.06
Name.... L
File.... K:\01\01-110\01113\H&H\SWMP\PPW\PROPOSED.PPW
........................................................................
........................................................................
TIME OF CONCENTRATION CALCULATOR
........................................................................
........................................................................
Segment #1: Tc: TR-55 Sheet.
Mannings n
Hydraulic Length
2yr, 24hr P
Slope
Avg.Velocity
.0800
230.00 ft
3.6000 in
.043500 ft/ft
48 ft/sec
Segment #1 Time: .1329 hrs
------------------------------------------------------------------------
Segment #2: Tc: TR-55 Shallow
Hydraulic Length 910.00 ft.
Slope .049500 ft/ft
Unpaved
Avg.Velocity 3.59 ft/sec.
Segment #2 Time: .0704 hrs
------------------------------------------------------------------------
Segment #3: Tc: TR-55 Channel
Flow Area
Wetted Perimeter
Hydraulic. Radius
Slope
Mannings n
Hydraulic. Length
2.0000 sq.ft
3.80 ft
.53 ft.
.027600 ft/ft
.0750.
3585.00 ft.,
Avg.Velocity 2.15 ft/sec
Segment #3 Time: .4629 hrs
------------------------------------------------------------------------
Long Lake Subdivision -SWMP Revision 2 -Appendix A- January 2002
K:\01\01-110\01113\H&H\SWMP\Revision_Jan2002\Proposed_Revision2.doc W&R Project #201113
LONG LAKE SUBDIVISION
PONDPACK OUTPUT FOR POST-DEVELOPMENT CONDITIONS
Type.... Tc Calcs Page 2.07
Name.... L
File.... K:\01\01-110\01113\H&H\SWMP\PPW\PROPOSED.PPW
Segment #4: Tc: TR-55 Channel
Flow Area
Wetted Perimeter
Hydraulic Radius
Slope
Mannings n
Hydraulic Length
Avg.Velocity
11.0000 sq.ft
13.00 ft
.85 ft
.005700 ft/ft
.0750
1620.00 ft
1.34 ft/sec
Segment #4 Time: .3354 hrs
------------------------------------------------------------------------
Segment #5: Tc: Length & Vel.
Hydraulic Length 2096.00 ft
Avg.Velocity 19.60 ft/sec
Segment #5 Time: .0297 hrs
------------------------------------------------------------------------
-------------------------
-------------------------
Total Tc: 1.0312 hrs
-------------------------
-------------------------
Long Lake Subdivision -SWMP Revision 2 -Appendix A- January 2002
K:\01\01-110\01113\H&H\SWMP\Revision-Jan2002\Proposed-Revision2.doc W&R Project #201113
LONG LAKE SUBDIVISION
PONDPACK OUTPUT FOR POST-DEVELOPMENT CONDITIONS
Type.... Tc Calcs Page 2.08
Name.... L ON SITE
File.... K:\01\01-110\01113\H&H\SWMP\PPW\PROPOSED.PPW
TIME OF CONCENTRATION CALCULATOR
Segment #1: Tc: TR-55 Sheet
Mannings n .0500
Hydraulic Length 106.00 ft
2yr, 24hr P 3.6000 in
Slope .018900 ft/ft
Avg.Velocity .43 ft/sec
Segment #1 Time: .0685 hrs
------------------------------------------------------------------------
Segment #2: Tc: TR-55 Shallow
Hydraulic Length 413.00 ft
Slope .102000 ft/ft
Unpaved
Avg.Velocity 5.15 ft/sec
Segment #2 Time: .0223 hrs
------------------------------------------------------------------------
Segment #3: Tc: TR-55 Channel
Flow Area
Wetted Perimeter
Hydraulic Radius
Slope
Mannings n
Hydraulic.Length
10.9000 sq.ft
10.90 ft
1.00 ft
.015100 ft/ft
.0750.
2175.00 ft.
. Avg.Velocity 2.44 ft/sec
Segment #3 Time: .2475. hrs
------------------------------------------------------------------------
Segment #4: Tc: Length & Vel.
Hydraulic.Length 2096.00.ft.
Avg.Velocity 19.60 ft/sec.
Segment #4 Time: .0297 hrs
------------------------------------------------------------------------
Total Tc: .3680 hrs
-------------------------
Long Lake Subdivision -SWMP Revision 2 -Appendix A- January 2002
K:\01\01-110\01113\11&H\SWMP\Revision-Jan2002\Proposed_Revision2.doc W&R Project #201113
LONG LAKE SUBDIVISION
PONDPACK OUTPUT FOR POST-DEVELOPMENT CONDITIONS
Type.... Tc Calcs Page 2.09
Name.... L ON SITE
File.... K:\01\01-110\01113\H&H\SWMP\PPW\PROPOSED.PPW
------------------------------------------------------------------------
Tc Equations used...
------------------------------------------------------------------------
==== SCS TR-55 Sheet Flow
Tc = (.007 * ((n * Lf)**0.8)) / ((P**.5) * (Sf**.4))
Where: Tc = Time of concentration, hrs
n = Mannings n
Lf = Flow length, ft
P = 2yr, 24hr Rain depth, inches
Sf = Slope, %
==== SCS TR-55 Shallow Concentrated Flow
Unpaved surface:
V 16.1345 * (Sf**0.5)
Paved surface:
V 20.3282 * (Sf**0.5)
Tc.= (Lf / V) / (3600sec/hr)
Where: V = Velocity, ft/sec.
Sf = Slope, ft/ft
Tc = Time of concentration, hrs
Lf = Flow length, ft
Long Lake Subdivision -SWMP Revision 2 -Appendix A- January 2002
K:\01\01-110\01113\H&H\SWMP\Revision_Jan2002\Proposed_Revision2.doc W&R Project #201113
LONG LAKE SUBDIVISION
PONDPACK OUTPUT FOR POST-DEVELOPMENT CONDITIONS
Type.... Tc Calcs Page 2.10
Name.... L ON SITE
File.... K:\01\01-110\01113\H&H\SWMP\PPW\PROPOSED.PPW
==== SCS Channel Flow
R = Aq / Wp
V = (1.49 * (R**(2/3)) * (Sf**-0.5)) / n
Tc = (Lf / V) / (3600sec/hr)
Where: R
Aq
Wp
V
Sf
n
Tc
Lf
Hydraulic radius
Flow area, sq.ft.
Wetted perimeter, ft
Velocity, ft/sec
Slope, ft/ft
Mannings n
Time of concentration, hrs
Flow length, ft
==== User Defined Length & Velocity
Tc = (Lf / V) / (3600sec/hr)
Where: Tc = Time of concentration, hrs
Lf = Flow length, ft
V = Velocity, ft/sec
Long Lake Subdivision -SWMP Revision 2 -Appendix A- January 2002
K:\01\01-110\01113\H&H\SWMP\Revision-Jan2002\Proposed-Revision2.doc W&R Project #201113
LONG LAKE SUBDIVISION
PONDPACK OUTPUT FOR POST-DEVELOPMENT CONDITIONS
Type.... Runoff CN-Area Page 3.01
Name.... 1 6/24/01
File.... K:\01\01-110\01113\H&H\SWMP\PPW\PROPOSED.PPW
RUNOFF CURVE NUMBER DATA
..........................................................................
..........................................................................
Area 1
--------------------------------------------------------------------------
Impervious
Area Adjustment Adjusted
Soil/Surface Description CN acres %C RUC CN
--------------------------------
Impervious ----
98 ---------
36.580 ----- ----- ------
98.00
B Meadow 58 29.260 58.00
B Wooded 55 57.260 55.00
B Graded - Cornerstone 86 10.950 86.00
C Meadow 71 8.450 71.00
C Wooded 70 36.700 70.00
C Graded - Cornerstone 91 10.870 91.00
D Meadow 78 4.480 78.00
D Wooded 77 22.150 77.00
COMPOSITE AREA & WEIGHTED CN --->
..................................
..................................
......
...... 216.700
.........
.........
.............
............. 71.92 (72)
.............
.............
Type.....Runoff. CN-Area
Name.... 2 6/24/01.
File.... K:\01\01-110\01113\H&H\SWMP\PPW\PROPOSED.PPW
RUNOFF CURVE NUMBER DATA
..........................................................................
..........................................................................
Area 2
--------------------------------------------------------------------------
Soil/Surface Description
Impervious
B Wooded
B Graded -
B Cleared
C. Graded -
C Cleared
D Graded -
D Cleared
Impervious.
Area Adjustment.
CN acres. %C RUC
----
98 ---------
1.730 . ----- -----
55 25.780
86 15.640
79 12.600
91 9.000
86 8.190
94 3.000
89 3.160
Adjusted
CN
98.00.
55.00
86.00.
79.00
91.00.
86.00
94.00.
89.00.
Cornerstone
Cornerstone
Cornerstone
Cornerstone
Cornerstone
Cornerstone
COMPOSITE AREA & WEIGHTED CN ---> 79.100 76.04 (76)
............................................................
...........................................................................
Long Lake Subdivision -SWMP Revision 2 -Appendix A- January 2002
K:\01\01-110\01113\H&H\SWMP\Revision-Jan2002\Proposed-Revision2.doc W&R Project #201113
LONG LAKE SUBDIVISION
PONDPACK OUTPUT FOR POST-DEVELOPMENT CONDITIONS
Type.... Runoff CN-Area Page 3.02
Name.... 3 6/24/01
File.... K:\01\01-110\01113\H&H\SWMP\PPW\PROPOSED.PPW
RUNOFF CURVE NUMBER DATA
..........................................................................
..........................................................................
Area 3
--------------------------------------------------------------------------
Impervious
Area Adjustment Adjusted
Soil/Surface Description CN acres %C RUC CN
------------
Impervious -------------------- ----
98 ---------
12.920 ----- ----- ------
98.00
B Meadow 58 1.740 58.00
B. Cleared - Cornerstone 79 10.250 79.00
C Meadow 71 2.850 71.00
C Wooded 71 1.700 71.00
C Cleared - Cornerstone 86 2.870 86.00
D Meadow 78 .090 78.00
D Cleared - Cornerstone 89 1.980 89.00
COMPOSITE AR
............
............ EA & WEIGHTED CN --->
......................
......................
......
...... 34.400
.........
.........
.............
............. 85.17 (85)
.............
.............
Type.... Runoff CN-Area
Name.... BELOW DAM2
File.... K:\01\01-110\01113\H&H\SWMP\PPW\PROPOSED.PPW
RUNOFF CURVE NUMBER DATA
..........................................................................
Below Dam
--------------------------------------------------------------------------
Impervious
Area Adjustment. Adjusted
Soil/Surface Description CN acres %C RUC CN
--------------------------------
C Grass ----
74 ---------
.390 ----- ----- ------
74.00
C Woods 70 . 6.380 70.00
C Townhomes 90 .190 90.00
B Grass 61 1.070 61.00
B Woods. 55 2.130 55.00
B Townhomes 85 10.610 85.00
Impervious 98 4.090 98.00.
COMPOSITE AREA & WEIGHTED CN --->
..................................
..................................
......
...... 24.860
.........
.........
.............
............. 79.55 (80)
.............
.............
Long Lake Subdivision -SWMP Revision 2 -Appendix A- January 2002
K:\01\01-110\01113\H&H\SWMP\Revision_Jan2002\Proposed-Revision2.doc W&R Project #201113
LONG LAKE SUBDIVISION
PONDPACK OUTPUT FOR POST-DEVELOPMENT CONDITIONS
Type.... Runoff CN-Area Page 3.03
Name.... L OFF 6/24/01
File.... K:\01\01-110\01113\H&H\SWMP\PPW\PROPOSED.PPW
RUNOFF CURVE NUMBER DATA
..........................................................................
..........................................................................
L Off-site
--------------------------------------------------------------------------
Impervious
Area Adjustment Adjusted
Soil/Surface Description CN acres %C RUC CN
-------------------------------- ---- --------- ----- ----- ------
Impervious 98 20.800 98.00
B Meadow 58 1.660 58.00
B Wooded 55 72.050 55.00
B Graded - Cornerstone 86 .110 86.00
B Cleared - Cornerstone 79 3.680 79.00
C Meadow 71 2.730 71.00.
C Wooded 70 31.550 70.00
C Graded - Cornerstone 91 5.160 91.00
D Meadow 78 .720 78.00
D Wooded 77 8.200 77.00
COMPOSITE AREA & WEIGHTED CN --->
...................................
...................................
.....
.... 146.660
...............
................ 67.89 (68)
....................
....................
Type.... Runoff. CN-Area
Name.... L ON 6/24/01
File.... K:\01\01-110\01113\H&H\SWMP\PPW\PROPOSED.PPW
RUNOFF CURVE NUMBER DATA
...................................
.....
..........
............
............
...................................
L On-site ..... .......... ............ .............
----------------------------------- ----- --------- -------------
Impervious. ------------
Area Adjustment Adjusted
Soil/Surface Description CN acres %-C RUC CN
--------------------------------
Impervious ----
98 ---------
22.990 ----- ----- ------
98.00
B Wooded 55 17.950 55.00
C Wooded 70 31.110. 70.00.
D Wooded 77 6.590 77.00
Commercial B 92 2.930 92.00.
R-6 B 82 43.060 82.00
R-6 C 87, 7.110 87.00
R-6 D. 90 .650 90.00
R-10 B 85 16.520. 85.00
R-10 C 90 5.610 90.00
R-10. D 92 .260 92.00
Lake. 98 17.960 98.00.
COMPOSITE AREA & WEIGHTED CN --->
..................................
..................................
.....
..... 172.740
..........
..........
.............
............. 81.60 (82)
.............
.............
Long Lake Subdivision -SWMP Revision 2 -Appendix A- January 2002
K:\01\01-110\01113\H&H\SWMP\Revision_Jan2002\Proposed-Revision2.doc W&R Project #201113
LONG LAKE SUBDIVISION
PONDPACK OUTPUT FOR POST-DEVELOPMENT CONDITIONS
Type.... Vol: Elev-Area Page 4.01
Name.... BELOW DAM
File.... K:\01\01-110\01113\H&H\SWMP\PPW\PROPOSED.PPW
Elevation Planimeter Area Al+A2+sgr(Al*A2) Volume Volume Sum
(ft)
------------ (sq.in) (acres)
--------------------- (acres)
---------------- (ac-ft)
---------- (ac-ft)
-------------
336.00 ----- .0170 .0000 .000 .000
338.00 ----- .1158 .1772 .118 .118
340.00 ----- .3547 .6731 .449 .567
342.00 ----- .8800 1.7933 1.196 1.762
344.00 ----- 1.2920 3.2383 2.159 3.921
348.00 ----- 2.0813 5.0132 6.684 10.605
350.00 ----- 2.3855 6.6951 4.463 15.069
354.00 ----- 2.9510 7.9897 10.653 25.722
356.00 ----- 3.2842 9.3483 6.232 31.954
POND VOLUME EQUATIONS
* Incremental volume computed by the Conic Method for Reservoir Volumes.
Volume = (1/3) * (EL2-ELl) * (Areal + Area2 + sq.rt.(Areal*Area2))
where: EL1, EL2 = Lower and upper elevations of the increment
Areal,Area2 = Areas computed for EL1, EL2, respectively
Volume = Incremental volume between EL1 and EL2
Long Lake Subdivision -SWMP Revision 2 -Appendix A- January 2002
K:\01\01-110\01113\H&H\SWMP\Revision-Jan2002\Proposed-Revision2.doc W&R Project #201113
LONG LAKE SUBDIVISION
PONDPACK OUTPUT FOR POST-DEVELOPMENT CONDITIONS
Type.... Vol: Elev-Area Page 4.02
Name.... LONG LAKE
File.... K:\01\01-110\01113\H&H\SWMP\PPW\PROPOSED.PPW
Elevation Planimeter Area Al+A2+sgr(Al*A2) Volume Volume Sum
(ft) (sq.in) (acres)
-
---- (acres)
---------------- (ac-ft)
---------- (ac-ft)
-------------
------------
368.50 --------------
--
----- 17.3000 .0000 .000 .000
369.50 ----- 20.0000 55.9011 18.634 18.634
370.50 ----- 22.4000 63.5660 21.189 39.822
371.30 ----- 24.9500 70.9907 18.931 58.753
372.50 ----- 24.8000 74.6249 29.850 88.603
373.50 ----- 25.1000 74.8496 24.950 113.553
374.00 ----- 27.6300 79.0646 13.177 126.731
376.00 ----- 31.2700 88.2937 58.862 185.593
378.00 ----- 35.7700 100.4844 66.990 252.583
POND VOLUME EQUATIONS
* Incremental volume computed by the Conic Method for Reservoir Volumes.
Volume = (1/3) * (EL2-EL1) * (Areal + Area2 + sq.rt.(Areal*Area2))
where: ELI, EL2 = Lower and upper elevations of the increment
Areal,Area2 = Areas. computed for ELI, EL2, respectively
Volume = Incremental volume between ELI and EL2
Long Lake Subdivision -SWMP Revision 2 -Appendix A- January 2002
K:\01\01-110\01113\H&H\SWMP\Revision-Jan2002\Proposed-Revision2.doc W&R Project #201113
LONG LAKE SUBDIVISION
PONDPACK OUTPUT FOR POST-DEVELOPMENT CONDITIONS
Type.... Outlet Input Data Page 5.01
Name.... PR 10
File.... K:\01\01-110\01113\H&H\SWMP\PPW\PROPOSED.PPW
REQUESTED POND WS ELEVATIONS:
Min. Elev.= 368.50 ft
Increment = .25 ft
Max. Elev.= 378.00 ft
**********************************************
OUTLET CONNECTIVITY
**********************************************
---> Forward Flow Only (UpStream to DnStream)
<--- Reverse Flow Only (DnStream to UpStream)
< --- > Forward and Reverse Both Allowed
Structure
-----------------
Weir-XY Points
Stand Pipe
Culvert-Circular
TW SETUP, DS Channel

No. Outfall E1, ft E2, ft
----
WR -------
---> TW ---------
372.650 ---------
378.000
SP ---> CV 368.500 378.000
CV ---> TW 346.910 378.000
Long Lake Subdivision -SWMP Revision 2 -Appendix A- January 2002
K:\01\01-110\01113\H&H\SWMP\Revision_Jan2002\Proposed_Revision2.doc W&R Project #201113
LONG LAKE SUBDIVISION
PONDPACK OUTPUT FOR POST-DEVELOPMENT CONDITIONS
Type.... Outlet Input Data Page 5.02
Name.... PR 10
File.... K:\01\01-110\01113\H&H\SWMP\PPW\PROPOSED.PPW
OUTLET STRUCTURE INPUT DATA
Structure ID = WR
Structure Type = Weir-XY Points
------------------------------------
# of openings = 1
WEIR X-Y GROUND POINTS
X, ft
--------- Elev, ft
---------
1039.39 378.00
1057.18 373.28
1094.36 372.65
1109.83 377.01
1141.91 377.57
1145.00 378.00
Lowest Elev. = 372.65 ft
Weir Coeff. = 2.800000.
Weir TW effects (Use adjustment equation)
Structure ID = SP
Structure. Type = Stand Pipe
-----------------
# of. Openings -------------
= 1 ------
Invert. Elev. _ 368.50 ft.
Diameter = 2.0000 ft
Orifice. Area = 3.1416 sq.ft
Orifice. Coeff. _ .600
Weir Length = 6.28 ft
Weir Coeff. _ 3.100
K, Submerged _ .000
K, Reverse _ 1.000
Kb,Barrel = .000000 (per ft of.full flow)
Barrel Length = 00 ft
Mannings n = .0000
Long Lake Subdivision -SWMP Revision 2 -Appendix A- January 2002
K:\01\01-110\01113\H&H\SWMP\Revision_Jan2002\Proposed_Revision2.doc W&R Project #201113
LONG LAKE SUBDIVISION
PONDPACK OUTPUT FOR POST-DEVELOPMENT CONDITIONS
Type.... Outlet Input Data Page 5.03
Name.... PR 10
File.... K:\01\01-110\01113\H&H\SWMP\PPW\PROPOSED.PPW
OUTLET STRUCTURE INPUT DATA
Structure ID = CV
Structure Type =
------------------- Culvert-Circular
-----------------
No. Barrels = 1
Barrel Diameter = 1.5000 ft
Upstream Invert = 346.91 ft
Dnstream Invert = 344.91 ft
Horiz. Length = 143.00 ft
Barrel Length = 143.01 ft
Barrel Slope = .01399 ft/ft
OUTLET CONTROL DATA ...
Mannings n = .0260
Ke = .5000 (forward entrance loss)
Kb = .072853 (per ft of full flow).
Kr = .5000 (reverse entrance loss)
HW Convergence = .001 +/- ft
INLET CONTROL DATA. ..
Equation form = 1
Inlet Control K = .0078
Inlet Control M = 2.0000
Inlet Control c = .03790
Inlet Control Y = .6900
T1 ratio (HW/D) = 1.129
T2 ratio. (HW/D) _ 1.289
Slope. Factor = -.500
Use unsubmerged inlet control Form 1 equ. below Ti elev.
Use submerged inlet control Form 1.equ. above T2 elev.
In transition zone between unsubmerged and submerged inlet control,.
interpolate between flows at T1 & T2...
At T1 Elev = 348.60.ft ---> Flow 7.58 cfs.
At T2 Elev 348.84 ft ---> Flow = 8.66 cfs.
Structure ID = TW
Structure Type. = TW SETUP,.DS Channel.
------------------------------------
FREE OUTFALL CONDITIONS SPECIFIED.
CONVERGENCE TOLERANCES...
Maximum Iterations= 30.
Min. TW tolerance = .01 ft
Max. TW. tolerance. .01 ft
Min. HW tolerance = .01 ft.
Max. HW tolerance. .01 ft
Min. Q tolerance. = .10 cfs
Max. Q tolerance = .10 cfs.
Long Lake Subdivision -SWMP Revision 2 -Appendix A- January 2002
K:\01\01-110\01113\H&H\SWMP\Revision_Jan2002\Proposed-Revision2.doc W&R Project #201113
LONG LAKE SUBDIVISION
PONDPACK OUTPUT FOR POST-DEVELOPMENT CONDITIONS
Type.... Composite Rating Curve Page 5.04
Name.... PR 10
File.... K:\01\01-110\01113\H&H\SWMP\PPW\PROPOSED.PPW
***** COMPOSITE OUTFLOW SUMMARY ****
WS Elev, Total Q Notes
-------- -------- ------ -- Converge ----------- --------------
Elev. Q TW Elev Error
ft cfs ft +/-ft Contributing Structures
--------
368.50 -------
.00 ------
Free -- -----
Outfall --------------------------
(no Q: WR,SP,CV)
368.75 2.43 Free Outfall SP,CV (no Q: WR)
369.00 6.89 Free Outfall SP,CV (no Q: WR)
369.25 12.65 Free Outfall SP,CV (no Q: WR)
369.50 15.12 Free Outfall SP,CV (no Q: WR)
369.75 16.91 Free Outfall SP,CV (no Q: WR)
370.00 18.52 Free Outfall SP,CV (no Q: WR)
370.25 20.05 Free Outfall SP,CV (no Q: WR)
370.50 20.16 Free Outfall SP,CV (no Q: WR)
370.75 20.26 Free Outfall SP,CV (no Q: WR)
371.00 20.36 Free. Outfall SP,CV (no Q: WR)
371.25 20.47 Free Outfall SP,CV (no Q: WR)
371.50 20.57 Free Outfall SP,CV (no Q: WR)
371.75 20.67 Free Outfall SP,CV (no Q: WR)
372.00 20.77 Free Outfall SP,CV (no Q: WR)
372.25 20.88 Free Outfall SP,CV (no Q: WR)
372.50 20.98 Free Outfall SP,CV (no Q: WR)
372.65 21.04 Free Outfall SP,CV (no Q: WR)
372.75 21.27 Free Outfall WR,SP,CV
373.00 25.66 Free Outfall WR,SP,CV
373.25 38.55 Free Outfall WR,SP,CV
373.50 64.54 Free Outfall WR,SP,CV
373.75 98.90 Free Outfall WR,SP,CV
374.00 140.27 Free Outfall WR,SP,CV
374.25 188.14 Free Outfall WR,SP,CV
374.50 242.23 Free Outfall WR,SP,CV
374.75 .302.35 Free Outfall WR,SP,CV
375.00 368.38 Free. Outfall WR,SP,CV
375.25 .440.24 Free Outfall. WR,SP,CV
375.50 517.89 Free Outfall WR,SP,CV
375.75 601.29 Free. Outfall WR,SP,CV
376.00 690.45 Free Outfall WR,SP,CV
376.25 785.35 Free Outfall WR,SP,CV
376.50 886.01 Free Outfall WR,SP,CV
376.75 992.46 Free Outfall WR,SP,CV
377.00 1104.71 Free Outfall WR,SP,CV
377.25 1228.05 Free Outfall. WR,SP,CV
377.50 1363.29 Free Outfall WR,SP,CV
377.75 1514.52 Free Outfall WR,SP,CV
378.00 1678.91 Free Outfall WR,SP,CV
Long Lake Subdivision -SWMP Revision 2 -Appendix A- January 2002
K:\01\01-110\01113\H&H\SWMP\Revision-Jan2002\Proposed-Revision2.doc W&R Project #201113
LONG LAKE SUBDIVISION
PONDPACK OUTPUT FOR POST-DEVELOPMENT CONDITIONS
Type.... Outlet Input Data Page 5.05
Name.... PR 20
File.... K:\01\01-110\01113\H&H\SWMP\PPW\PROPOSED.PPW
REQUESTED POND WS ELEVATIONS:
Min. Elev.= 336.00 ft
Increment = .25 ft
Max. Elev.= 356.00 ft
**********************************************
OUTLET CONNECTIVITY
**********************************************
---> Forward Flow Only (UpStream to DnStream)
<--- Reverse Flow Only (DnStream to UpStream)
<---> Forward and Reverse Both Allowed
Structure No. Outfall E1, ft E2, ft
----------------- ---- ------- --------- ---------
Weir-Rectangular WR ---> TW 355.000 356.000
Culvert-Box CV ---> TW 336.700 356.000
TW SETUP, DS Channel
OUTLET STRUCTURE INPUT DATA
Structure ID
Structure. Type
---------------
# of openings.
Crest. Elev.
Weir Length
Weir Coeff..
Weir TW. effects
Type.... Outlet Input Data
Page 5.06
Long Lake Subdivision -SWMP Revision 2 -Appendix A-
K:\01\01-110\01113\1-1&H\S W MP\Revision_Jan2002\Proposed_Revision2.doc
WR
Weir-Rectangular
----------------
1
355.00 ft.
170.00 ft.
2.650000
(Use adjustment. equation)
January 2002
W&R Project #201113
LONG LAKE SUBDIVISION
PONDPACK OUTPUT FOR POST-DEVELOPMENT CONDITIONS
Name.... PR 20
File.... K:\01\01-110\01113\H&H\SWMP\PPW\PROPOSED.PPW
OUTLET STRUCTURE INPUT DATA
Structure ID = CV
Structure Type =
------------------- Culvert-Box
-----------------
No. Barrels = 2
Barrel Height = 6.00 ft
Barrel Width = 6.00 ft
Upstream Invert = 336.70 ft
Dnstream Invert = 335.60 ft
Horiz. Length = 156.00 ft
Barrel Length = 156.00 ft
Barrel Slope = .00705 ft/ft
OUTLET CONTROL DATA ...
Mannings n = .0130
Ke = .5000 (forward entrance loss)
Kb = .002868 (per ft of full flow)
Kr = .5000 (reverse entrance loss)
HW Convergence = .001 +/- ft
INLET CONTROL DATA. ..
Equation form = 2
Inlet Control K = .5150
Inlet Control M _ .6670
Inlet.Control c _ .03750
Inlet Control Y = .7900
T1 ratio (HW/D) = 1.188
T2 ratio (HW/D) _ 1.386
Slope Factor = -.500
Use unsubmerged inlet control Form 2 equ. below T1 elev..
Use submerged inlet control Form 2 equ. above T2 elev..
In transition zone between unsubmerged and submerged inlet control,
....interpolate between flows. at T1 & T2...
At T1 Elev = 343.83 ft ---> Flow 308.64 cfs
At T2. Elev = 345.02 ft .---> Flow . 352.73 cfs.
Structure ID _ TW
Structure Type = TW SETUP, DS Channel
------------------------------------
USE DOWNSTREAM CHANNEL NORMAL DEPTH FOR TW...
Channel Type: Chn-Irreg.
Channel ID: PR 20
CONVERGENCE TOLERANCES...
Maximum Iterations= 30.
Min. TW tolerance = .01 ft
Max. TW tolerance .01 ft
Min. HW tolerance = .01 ft
Max. HW tolerance = .01 ft.
Min. Q tolerance .10 cfs
Max. Q tolerance = .10 cfs
Type.... Outlet Input Data
Page 5.07
Long Lake Subdivision -SWMP Revision 2 -Appendix A- January 2002
K:\01\01-110\01113\H&H\SWMP\Revision_Jan2002\Proposed-Revision2.doc W&R Project #201113
LONG LAKE SUBDIVISION
PONDPACK OUTPUT FOR POST-DEVELOPMENT CONDITIONS
Name.... PR 20
File.... K:\01\01-110\01113\H&H\SWMP\PPW\PROPOSED.PPW
USE DOWNSTREAM CHANNEL NORMAL DEPTH FOR TW...
Channel Type: Chn-Irreg.
Channel ID: PR 20
COMPOSITE CHANNEL SECTION
Slope = .009730 ft/ft
Elev.Constant= .00 ft
GROUND ELEVATION POINTS
Cross Section ID: PR 20
Lowest Elev. = 335.60 ft
X Distance Y Elev Y+Constant.
(ft)
---------- - (ft)
--------- (ft)
----------
1000.00 360.00 360.00
1007.00 358.00 358.00
1016.00 356.00 356.00
1029.00 354.00 354.00
1042.00 352.00 352.00
1055.00 350.00 350.00
1067.00 348.00 348.00
1077.00 346.00 346.00
1085.00 344.00 344.00
1098.00 342.00 342.00.
1140.00 340.00 340.00
1148.00 338.00 338.00
1156.00 336.00 336.00
1166.00 335.60 335.60
1176.00 336.00 336.00
1194.00 338.00 338.00
1207.00 340.00 340.00
1222.00 342.00 342.00.
1236.00 344.00 344.00
1243.00 346.00. 346.00
1251.00 348.00 348.00.
1259.00 350.00. 350.00
1267.00 352.00 352.00
1275.00 354.00 354.00
1288.00 356.00 356.00.
1304.00 358.00 358.00
1320.00 360.00 360.00
Long Lake Subdivision -SWMP Revision 2 -Appendix A- January 2002
K:\01\01-110\01113\H&H\SWMP\Revision_Jan2002\Proposed_Revision2.doc W&R Project #201113
LONG LAKE SUBDIVISION
PONDPACK OUTPUT FOR POST-DEVELOPMENT CONDITIONS
Type.... Outlet Input Data Page 5.08
Name.... PR 20
File.... K:\01\01-110\01113\H&H\SWMP\PPW\PROPOSED.PPW
THE INFORMATION BELOW WAS USED TO COMPUTE
FLOW RATE SEPARATELY FOR EACH SEGMENT.
Cross Section ID: PR 20
CROSS SECTION SUBDIVIDED INTO DIFFERENT SEGMENTS
X Left X Right
Segment (ft) (ft) Ground n Descr.
-------
1 --------
1000.00 --------
1148.00 --------
0.08500 -----------------
Left Overbank
2 1148.00 1194.00 0.07500 Main Channel
3 1194.00 1320.00 0.08500 Right Overbank
Long Lake Subdivision -SWMP Revision 2 -Appendix A- January 2002
K:\01\01-110\01113\H&H\SWMP\Revision-Jan2002\Proposed-Revision2.doc W&R Project #201113
LONG LAKE SUBDIVISION
PONDPACK OUTPUT FOR POST-DEVELOPMENT CONDITIONS
Type.... Composite Rating Curve
Name.... PR 20
File.... K:\01\01-110\01113\H&H\SWMP\PPW\PROPOSED.PPW
***** COMPOSITE OUTFLOW SUMMARY ****
CUMULATIVE HGL CONVERGENCE ERROR .003 (+/- ft)
FLOW PATH: Elev= 337.75; Branch: CV-TW
* Max. convergence errors shown may also occur for
flow paths other than the ones listed above.
WS Elev, Total Q
----------------
Elev. Q
ft cfs.
-------- -------
336.00
336.25
336.50
336.70
336.75
337.00
337.25
337.50
337.75
338.00
338.25
338.50
338.75
339.00
339.25
339.50
339.75
340.00
340.25
340.50
340.75
341.00
341.25
341.50
341.75
342.00.
342.25
342.50
342.75
343.00
343.25
343.50
.00
.00
.00
.00
.34
4.84
12.01
21.04
31.65
43.55
56.78.
71.04
86.24.
102.56.
119.79
137.79
156.61
176.31
196.58.
217.73.
239.62
262.11.
285.40
309.24
333.60.
358.84
384.39
410.65
437.43
464.98
492.98
521.36
-------- Converge
TW Elev Error
ft +/-ft
335.60
335.60
335.60
335.60
335.79
336.09
336.30
336.49.
336.68
336.84
337.01
337.16.
337.31
337.45
337.59
337.72
337.85
337.98
338.08
338.18
338.28
338.38.
338.48
338.58
338.68
338.77
338.86
338.96
339.05
339.14
339.23
339.32
Notes
-------------------------
Contributing Structures
--------------------------
.000 None contributing
.000 None contributing
.000 None contributing
.000 None contributing
.000 CV
.000 CV
.000 CV
.000 CV
.003 CV
.000 CV
.000 CV
.000 CV
.000 CV
.000 CV
.000 CV
.000 CV
.000 CV
.000 CV
.000 CV
.000 CV
.000 CV
.000 CV
.000 CV
.000 CV
.001 CV
.000 CV
.000 CV
.000 CV
.000 CV
.000 CV
.000 CV
.000 CV
Page 5.09
Long Lake Subdivision -SWMP Revision 2 -Appendix A- January 2002
K:\01\01-110\01113\H&H\SWMP\Revision_Jan2002\Proposed-Revision2.doc W&R Project #201113
LONG LAKE SUBDIVISION
PONDPACK OUTPUT FOR POST-DEVELOPMENT CONDITIONS
Type.... Composite Rating Curve
Name.... PR 20
File.... K:\01\01-110\01113\H&H\SWMP\PPW\PROPOSED.PPW
***** COMPOSITE OUTFLOW SUMMARY ****
CUMULATIVE HGL CONVERGENCE ERROR .003 (+/- ft)
FLOW PATH: Elev= 337.75; Branch: CV-TW
* Max. convergence errors shown may also occur for
flow paths other than the ones listed above.
WS Elev, Total Q Notes
-------- -------- -------- Converge -------------------------
Elev. Q TW Elev Error
ft cfs ft +/-ft Contributing Structures
--------
343.75 -------
550.37 --------
339.41 -----
.000 --------------------------
CV
344.00 579.98 339.50 .000 CV
344.25 609.97 339.58 .000 CV
344.50 640.38 339.67 .000 CV
344.75 671.52 339.75 .000 CV
345.00 703.03 339.84 .000 CV
345.25 727.75 339.90 .000 CV
345.50 751.11 339.97 .000 CV
345.75 773.81 340.02 .000 CV
346.00 795.75 340.08 .000 CV
346.25 817.30 340.14 .000 CV
346.50 838.09 340.19 .000 CV
346.75 858.50 340.24 .000 CV
347.00 878.33 340.29 .000 CV
347.25 897.79 340.33 .000 CV
347.50 916.86 340.38 .000 CV
347.75 935.55 340.42 .000 CV
348.00 953.87 340.46 .000 CV
348.25 971.79 340.50 .000 CV
348.50 989.34 340.54 .000 CV
348.75 1006.70 340.58 .000 CV
349.00. 1023.67 340.62 .000 CV
349.25. 1040.46 340.65 .000 CV
349.50 1056.96 340.69 .000 CV
349.75 1073.17 340.72 .000 CV
350.00 1089.10 340.75 .000 CV
350.25 1104.93 340.79 .000 CV
350.50 1120.38 340.82 .000 CV
350.75 1135.73 340.85 .000 CV
351.00 1150.89 340.88 .000 CV
351.25 1165.77 340.91 .000 CV
351.50 1180.46 340.94 .000 CV
Page 5.10
Long Lake Subdivision -SWMP Revision 2 -Appendix A- January 2002
K:\01\01-110\01113\H&H\SWMP\Revision-Jan2002\Proposed_Revision2.doc W&R Project #201113
LONG LAKE SUBDIVISION
PONDPACK OUTPUT FOR POST-DEVELOPMENT CONDITIONS
Type.... Composite Rating Curve Page 5.11
Name.... PR 20
File.... K:\01\01-110\01113\H&H\SWMP\PPW\PROPOSED.PPW
***** COMPOSITE OUTFLOW SUMMARY ****
CUMULATIVE HGL CONVERGENCE ERROR .003 (+/- ft)
FLOW PATH: Elev= 337.75; Branch: CV-TW
* Max. convergence errors shown may also occur for
flow paths other than the ones listed above.
WS Elev, Total Q
Elev. Q
ft cfs
--------
351.75 -------
1195.05
352.00 1209.45
352.25 1223.66
352.50 1237.68
352.75 1251.60
353.00 1265.34
353.25 1278.88
353.50 1292.32
353.75 1305.58
354.00 1318.84
354.25 1331.81
354.50 1344.78
354.75 1357.56
355.00 1370.24
355.25 1439.03
355.50. 1554.41
355.75 1699.88
356.00 1869.71
------- Conver4
TW Elev Error
ft +/-ft
------- -----
340.96 .000
340.99 .000
341.02 .000
341.05 .000
341.07 .000
341.10 .000
341.12 .000
341.15 .000
341.17 .000.
341.19 .000
341.22 .000.
341.24 .000
341.26 .000
341.29 .000
341.40. .000
341.59 .000
341.82 .000.
342.06 .000
Notes
3e -----------------------
Contributing Structures
------------------------
CV
CV
CV
CV
CV
CV
CV
CV
CV
CV
CV
CV
CV
WR +CV
WR +CV
WR +CV
WR +CV
WR +CV
Long Lake Subdivision -SWMP Revision 2 -Appendix A- January 2002
K:\01\01-110\01113\H&H\SWMP\Revision-Jan2002\Proposed_Revision2.doc W&R Project #201113
LONG LAKE SUBDIVISION
PONDPACK OUTPUT FOR POST-DEVELOPMENT CONDITIONS
Type.... Pond E-V-Q Table Page 6.01
Name.... BELOW DAM
File.... K:\01\01-110\01113\H&H\SWMP\PPW\PROPOSED.PPW
LEVEL POOL ROUTING DATA
HYG Dir = K:\01\01-110\01113\H&H\SWMP\PPW\
Inflow HYG file = NONE STORED - BELOW DAM IN Dev..2
Outflow HYG file = NONE STORED - BELOW DAM OUT Dev..2
Pond Node Data = BELOW DAM
Pond Volume Data = BELOW DAM
Pond Outlet Data = PR 20
No Infiltration
INITIAL CONDITIONS
---------
Starting ------------
WS Elev = ---------
336.00 ----
ft
Starting Volume = .000 ac-ft.
Starting Outflow = .00 cfs
Starting Infiltr. _ .00 cfs
Starting Total Qout= .00 cfs
Time Increment = .0100 hrs
Elevation Outflow Storage Area Infilt. Q. Total 2S/t + O
ft cfs ac-ft acres cfs cfs cfs
-----------
336.00 -----------
.00 ---------
.000 ------------
.0170 -----------
.00 ------------
.00 ----------
.00
336.25 .00 .005 .0246 .00 .00 12.52
336.50 .00 .012 .0335 .00 .00 30.01
336.70 .00 .020 .0416 .00 .00 48.14
336.75 .34 .022 .0438 .00 .34 53.64
337.00 4.84 .034 .0554 .00 4.84 88.07
337.25 12.01 .050 .0684 .00 12.01 132.63
337.50 21.04 .069 .0828 .00 21.04 187.35
337.75 31.65 .091 .0986 .00 31.65 252.78
338.00 43.55 .118 .1158 .00 43.55 329.46
338.25 56.78 .150 .1385 .00 56.78 419.50
338.50 71.04 .188 .1633 .00 71.04 524.94
338.75 86.24 .232 .1901 .00 86.24 646.92
339.00 102.56 .283 .2189 .00 102.56 786.87.
339.25 119.79 .341 .2498 .00 119.79 945.78
339.50 137.79 .408 .2827 .00 137.79 1124.78
339.75 156.61 .483 .3177 .00 156.61 1325.12
340.00 176.31 .567 .3547 .00. 176.31 1548.12
340.25 196.58 .662 .4075 .00 196.58 1798.77.
340.50 217.73 .771 .4640 .00 217.73 2083.38.
340.75 239.62 .894 .5242 .00 239.62 2404.00
341.00 262.11 1.033 .5880 .00. 262.11 2762.74
341.25 285.40 1.189 .6555 .00 285.40 3162.00
Long Lake Subdivision -SWMP Revision 2 -Appendix A- January 2002
K:\01\014 10\01113\H&H\SWMP\Revision-Jan2002\Proposed-Revision2.doc W&R Project #201113
LONG LAKE SUBDIVISION
PONDPACK OUTPUT FOR POST-DEVELOPMENT CONDITIONS
Type.... Pond E-V-Q Table Page 6.02
Name.... BELOW DAM
File.... K:\01\01-110\01113\H&H\SWMP\PPW\PROPOSED.PPW
LEVEL POOL ROUTING DATA
HYG Dir =. K:\O1\01-110\01113\H&H\SWMP\PPW\
Inflow HYG file = NONE STORED - BELOW DAM IN Dev..2
Outflow HYG file = NONE STORED - BELOW DAM OUT Dev..2
Pond Node Data = BELOW DAM
Pond Volume Data = BELOW. DAM
Pond Outlet Data = PR 20
No Infiltration
INITIAL CONDITIONS
Starting WS Elev = 336.00 ft
Starting Volume = .000 ac-ft
Starting Outflow = .00 cfs
Starting Infiltr. _ .00 cfs
Starting Total Qout= .00 cfs
Time Increment = .0100 hrs
Elevation Outflow Storage Area Infilt. Q Total 2S/t + 0
ft cfs ac-ft acres cfs cfs cfs
-----------
341.50 ------------
309.24 --------
1.361 ------------
.7266 -----------
.00 ------------
309.24 ----------
3603.75
341.75 333.60 1.552 .8015 .00 333.60 4090.18
342.00 358.84 1.762 .8800 .00 358.84 4623.88
342.25 384.39 1.988 .9272 .00 384.39 5196.01
342.50 410.65 2.226 .9756 .00 410.65 5797.79
342.75 437.43 2.476 1.0252 .00 437.43 6429.75.
343.00 464.98 2.739 1.0761 .00 464.98 7092.90
343.25 492.98 3.014 1.1283 .00 492.98 7787.67
343.50 521.36 3.303 1.1816 .00 521.36 8514.73
343.75 . 550.37 3.605 1.2362 .00. 550.37 9275.06.
344.00 579.98 3.921 1.2920 .00 579.98 10069.40.
344.25 609.97 4.250 1.3359 .00 609.97 10894.30
344.50 640.38 4.589 1.3804 .00 640.38 11746.36.
344.75 671.52 4.940 1.4258 .00 671.52 12626.33
345.00 703.03 5.302 1.4718 .00 703.03 13534.31.
345.25 727.75 5.676 1.5186 .00 727.75 14463.58
345.50 751.11 6.062 1.5661 .00 751.11 15420.00
345.75 773.81 6.459 1.6143 .00 773.81 16404.72
346.00 795.75 6.869 1.6633. .00 795.75 17418.07
346.25 817.30 7.291 1.7129 .00 817.30 18460.89
346.50 838.09 7.725 1.7634 .00 838.09 19533.23.
346.75 858.50 8.172 1.8145 .00 858.50 20635.92.
347.00 878.33 8.633 1.8664 .00 878.33 21769.20
Long Lake Subdivision -SWMP Revision 2 -Appendix A- January 2002
K:\01\01-110\01113\H&H\SWMP\Revision_Jan2002\Proposed_Revision2.doc W&R Project #201113
LONG LAKE SUBDIVISION
PONDPACK OUTPUT FOR POST-DEVELOPMENT CONDITIONS
Type.... Pond E-V-Q Table Page 6.03
Name.... BELOW DAM
File.... K:\01\01-110\01113\H&H\SWMP\PPW\PROPOSED.PPW
LEVEL POOL ROUTING DATA
HYG Dir = K:\01\01-110\01113\H&H\SWMP\PPW\
Inflow HYG file = NONE STORED - BELOW DAM IN Dev..2
Outflow HYG file = NONE STORED - BELOW DAM OUT Dev..2
Pond Node Data = BELOW DAM
Pond Volume Data = BELOW DAM
Pond Outlet Data = PR 20
No Infiltration
INITIAL CONDITIONS
--------
Starting -------------
WS Elev = --------
336.00 -----
ft
Starting Volume = .000 ac-ft
Starting Outflow = .00 cfs
Starting Infiltr. _ .00 cfs
Starting Total Qout= .00 cfs
Time Inc rement = .0100 hrs
Elevation Outflow Storage Area Infilt. Q Total 2S/t + 0
ft
-------
- cfs ac-ft acres cfs cfs cfs
-
-
347.25 -------------
897.79 --------
9.106 ------------
1.9190 -----------
.00 ------------
897.79 ----------
22933.72
347.50 916.86 9.592 1.9724 .00 916.86 24129.92
347.75 935.55 10.092 2.0265 .00 935.55 25358.23
348.00 953.87 10.605 2.0813 .00 953.87 26619.10
348.25 971.79 11.130 2.1182 .00 971.79 27907.36
348.50 989.34 11.665 2.1554 .00 989.34 29217.65
348.75 1006.70 12.208 2.1930 .00 1006.70 30550.37
349.00 1023.67 12.761 2.2308 .00 1023.67 31905.52
349.25 1040.46 13.324 2.2690 .00 1040.46 33283.49
349.50 1056.96 13.896 2.3075 .00 1056.96 34684.38
349.75 1073.17 14.477 2.3464 .00 1073.17 36108.38.
350.00 1089.10 15.069 2.3855 .00 1089.10 37555.69
350.25 1104.93 15.669 2.4191 .00 1104.93 39024.92
350.50 1120.38 16.278 2.4529 .00 1120.38 40514.15.
350.75 1135.73 16.896 2.4870 .00 1135.73 42023.82.
351.00 1150.89 17.522 2.5213 .00 1150.89 43553.96
351.25 1165.77 18.157 2.5558 .00 1165.77 45104.63
351.50 1180.46 18.800 2.5905 .00 1180.46 46676.06
351.75 1195.05 19.452 2.6255 .00 1195.05 48268.50
352.00 1209.45 20.113 2.6607 .00 1209.45 49881.97
352.25 1223.66 20.782 2.6962 .00 1223.66 51516.64.
352.50 1237.68 21.461 2.7319 .00 1237.68 53172.64
352.75 1251.60 22.148 2.7678. .00 1251.60 54850.21
Long Lake Subdivision -SWMP Revision 2 -Appendix A- January 2002
K:\01\01-110\01113\H&H\SWMP\Revision-Jan2002\Proposed-Revision2.doc W&R Project #201113
LONG LAKE SUBDIVISION
PONDPACK OUTPUT FOR POST-DEVELOPMENT CONDITIONS
Type.... Pond E-V-Q Table Page 6.04
Name.... BELOW DAM
File.... K:\01\01-110\01113\H&H\SWMP\PPW\PROPOSED.PPW
LEVEL POOL ROUTING DATA
HYG Dir = K:\01\01-110\01113\H&H\SWMP\PPW\
Inflow HYG file = NONE STORED - BELOW DAM IN Dev..2
Outflow HYG file = NONE STORED - BELOW DAM OUT Dev..2
Pond Node Data = BELOW DAM
Pond Volume Data = BELOW DAM
Pond Outlet Data = PR 20
No Infiltration
INITIAL CONDITIONS
--------
Starting -------------
WS Elev = --------
336.00 -----
ft
Starting Volume = .000 ac-ft
Starting Outflow = .00 cfs
Starting Infiltr. _ .00 cfs
Starting Total Qout= .00 cfs
Time Inc rement = .0100 hrs
Elevation Outflow Storage Area Infilt. Q Total 2S/t + O
ft cfs ac-ft acres cfs cfs cfs.
----------
353.00 -------------
1265.34 --------
22.845 ------------
2.8040 -----------
.00 ------------
1265.34 ----------
56549.39
353.25 1278.88 23.550 2.8404 .00 1278.88 58270.33
353.50. 1292.32 24.265 2.8770 .00 1292.32 60013.26
353.75 1305.58 24.989 2.9139 .00 1305.58 61778.23
354.00 1318.84 25.722 2.9510 .00 1318.84 63565.58
354.25 1331.81. 26.465 2.9916 .00 1331.81 65376.17
354.50 1344.78 27.218 3.0326 .00 1344.78 67211.45
354.75 1357.56 27.981 3.0738 .00 1357.56 69071.41
355.00 1370.24 28.755 3.1154 .00 1370.24 70956.32.
355.25. 1439.03 29.539 3.1572 .00 1439.03 72922.53
355.50 1554.41. 30.333 3.1992. .00 1554.41 74960.70
355.75 1699.88. 31.138 3.2416. .00 1699.88 77054.50
356.00 1869.71 31.954 3.2842 .00 1869.71 79198.38.
Long Lake Subdivision -SWMP Revision 2 -Appendix A- January 2002
K:\01\01-110\01113\H&H\SWMP\Revision_Jan2002\Proposed-Revision2.doc W&R Project #201113
LONG LAKE SUBDIVISION
PONDPACK OUTPUT FOR POST-DEVELOPMENT CONDITIONS
Type.... Pond E-V-Q Table Page 6.05
Name.... LONG LAKE
File.... K:\01\01-110\01113\H&H\SWMP\PPW\PROPOSED.PPW
LEVEL POOL ROUTING DATA
HYG Dir = K:\01\01-110\01113\H&H\SWMP\PPW\
Inflow HYG file = NONE STORED - LONG LAKE IN Dev..2
Outflow HYG file = NONE STORED - LONG LAKE OUT Dev..2
Pond Node Data = LONG LAKE
Pond Volume Data = LONG LAKE
Pond Outlet Data = PR 10
No Infiltration
INITIAL CONDITIONS
Starting WS Elev = 368.50 ft
Starting Volume = .000 ac-ft
Starting Outflow = .00 cfs
Starting Infiltr. _ .00 cfs
Starting Total Qout= .00 cfs
Time Increment = .0100 hrs
Elevation Outflow Storage Area Infilt. Q Total 2S/t + O
ft cfs ac-ft acres cfs cfs cfs
----------
368.50 ------------
.00 ----------
.000 -----------
17.3000 -----------
.00 -----------
.00 -----------
.00
368.75 2.43 4.407 17.9567 .00 2.43 10666.96.
369.00 6.89 8.979 18.6255 .00 6.89 21736.90
369.25 12.65 13.721 19.3067 .00 12.65 33216.54
369.50 15.12 18.634 20.0000 .00 15.12 45108.65
369.75 16.91 23.707 20.5873 .00 16.91 57387.65
370.00 18.52 28.928 21.1830 .00 18.52 70024.34
370.25 20.05. 34.299 21.7873 . .00 20.05 83023.96
370.50 20.16 39.822 22.4000 .00 20.16 96390.27
370.75 20.26 45.520 23.1821 .00 20.26 110178.30
371.00 20.36 51.415 23.9777 .00 20.36. 124443.60
371.25 20.47 57.510 24.7866 .00 20.47 139194.20
371.50 20.57 63.741 24.9250 .00 20.57 154273.10
371.75 20.67 69.968 24.8937 .00 20.67 169343.30
372.00. 20.77 76.188 24.8625 .00 20.77 184394.70.
372.25 20.88 82.399 24.8312. .00 20.88 199427.10.
372.50 20.98. 88.603 24.8000 .00 20.98 214440.60.
372.65 21.04 92.326 24.8449 .00 21.04 223450.90
372.75 21.27 94.813 24.8748 .00 21.27 229467.60
373.00 25.66 101.041 24.9498. .00 25.66 244543.90
373.25 38.55 107.287 25.0248 .00 38.55 259674.10
373.50 64.54 113.553 25.1000 .00 64.54 274862.80
373.75 98.90 119.984 26.3498 .00 98.90 290459.30
Long Lake Subdivision -SWMP Revision 2 -Appendix A- January 2002
K:\01\01-110\01113\H&H\SWMP\Revision-Jan2002\Proposed-Revision2.doc W&R Project #201113
LONG LAKE SUBDIVISION
PONDPACK OUTPUT FOR POST-DEVELOPMENT CONDITIONS
Type.... Pond E-V-Q Table Page 6.06
Name.... LONG LAKE
File.... K:\01\01-110\01113\H&H\SWMP\PPW\PROPOSED.PPW
LEVEL POOL ROUTING DATA
HYG Dir = K:\01\01-110\01113\H&H\SWMP\PPW\
Inflow HYG file = NONE STORED - LONG LAKE IN Dev..2
Outflow HYG file = NONE STORED - LONG LAKE OUT Dev..2
Pond Node Data = LONG LAKE
Pond Volume Data = LONG LAKE
Pond Outlet Data = PR 10
No Infiltration
INITIAL CONDITIONS
--------
Starting ------------
WS Elev = ---------
368.50 -----
ft
Starting Volume = .000 ac-ft
Starting Outflow = .00 cfs
Starting Infiltr. _ .00 cfs
Starting Total Qout= .00 cfs
Time Increment = .0100 hrs
Elevation Outflow Storage Area Infilt. Q Total 2S/t + 0
ft cfs ac-ft acres. cfs cfs cfs
----------
374.00 ------------
140.27 ---------
126.731 ------------
27.6300 -----------
.00 -----------
140.27 -----------
306828.00
374.25 188.14 133.693 28.0727 .00 188.14 323725.80
374.50 242.23 140.767 28.5189 .00 242.23 340898.60
374.75 302.35 147.953 28.9686 .00 302.35 358348.50
375.00 368.38 155.252 29.4219 .00 368.38 376077.50.
375.25 440.24 162.664 29.8786 .00 440.24 394087.60.
375.50 517.89 170.191 30.3389 .00 517.89 412380.80
375.75 601.29 177.834 30.8027 .00 601.29 430959.40.
376.00 690.45 185.593 31.2700 .00 690.45 449825.30
376.25 785.35 193.479 31.8160 .00 785.35 469003.50
376.50 886.01 201.501 32.3667 .00 886.01 488519.20
376.75 992.46 209.662 32.9221 .00 992.46 508375.20
377.00 1104.71 217.963 33.4822 .00 1104.71 528574.50
377.25 1228.05 226.404 34.0471 .00 1228.05 549125.36
377.50 1363.29 234.987 34.6167 .00 1363.29 570031.00.
377.75 1514.52 243.713 35.1910 .00 1514.52 591298.80.
378.00 1678.91 252.583 35.7700 .00 1678.91 612928.60
Long Lake Subdivision -SWMP Revision 2 -Appendix A- January 2002
K:\01\01-110\01113\H&H\SWMP\Revision-Jan2002\Proposed-Revision2.doc W&R Project #201113
LONG LAKE SUBDIVISION - Hydrographs for Post-development Conditions
Hydrograph for 2-yr Event
POST-DEVELOPMENT LONG LAKE IN vs OUT
'S
LL
8 10 12 14 16 18 20 22 24 26 28
Time (hrs)
Hydrograph for 2-yr Event
POST-DEVELOPMENT HYDROGRAPHS AT PROPERTY OUTFALL
N
LL
8 10 12 14 16 18 20 22 24 26 28
Time (hrs)
Plotted Curves
LONG LAKE IN Dev..2
LONG LAKE OUT Dev..2
Plotted Curves
BELOW DAM Dev..2
LONG LAKE OUT Dev..2
OUTFALL 10 Dev..2
Long Lake Subdivision - SWMP Revision 2 - Appendix A - January 2002
K:\01\01-110\01113\H&H\SWMP\Revision_Jan2002\Revised Grapbs_POST_Revision2.doc W&R Project #201113
LONG LAKE SUBDIVISION - Hydrographs for Post-development Conditions
Hydrograph for 10-yr Event
POST-DEVELOPMENT LONG LAKE IN vs OUT
LL
Hydrograph for 10-yr E\ent
POST-DEVELOPMENT HYDROGRAPHS AT PROPERTY OUTFALL
80
70
N
V
3 60
0
LL
50
10
6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27
Time (hrs)
Long Lake Subdivision - SWMP Revision 2 - Appendix A -
K:\01\01-110\01113\H&H\SWMP\Revision_Jan2002\Revised Graphs_POST Revision2.doc
Plotted Curves
LONG LAKE IN Dev.10
LONG LAKE OUT Dev.10
Plotted. Curves
BELOW DAM Dev.10
LONG LAKE OUT Dev.10
OUT 10 Dev.10
January 2002
W&R Project #201113
6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27
Time (hrs)
LONG LAKE SUBDIVISION
PONDPACK OUTPUT FOR OTHER AREA (BELOW DAM)
Job File: K:\01\01-110\01113\H&H\SWMP\PPW\BELOW DAM OTHER AREA.PPW
Rain Dir: I:\ENGFILE\HAESTAD\PPW RAINFALL DATA\WAKE CO\
--------------------------
--------------------------
JOB TITLE
--------------------------
--------------------------
Long Lake Subdivison
Stormwater Management Plan
W&R Project #201113
Drainage Area Downstream of Long Lake Dam that drains AWAY FROM the outlet of Long Lake.
This water goes through the existing developments south of Long Lake and crosses under
US70 at a separate point south.
Long Lake Subdivision - SWMP Revision 2 - Appendix A- January 2002
K:\01\01-110\01113\H&H\SWMP\Revision-Jan2002\OTHER AREA Report_Revision1doc W&R Project #201113
LONG LAKE SUBDIVISION
PONDPACK OUTPUT FOR OTHER AREA (BELOW DAM)
Table of Contents
********************** MASTER SUMMARY **********************
Watershed....... Master Network Summary 1.01
****************** DESIGN STORMS SUMMARY *******************
Type II......... Design Storms ...................... 2.01
********************** TC CALCULATIONS *********************
OTHER AREA...... Tc Calcs ........................... 3.01
POST TC......... Tc Calcs ........................... 3.02
********************** CN CALCULATIONS *********************
OTHER POST...... Runoff CN-Area ..................... 4.01
OTHER PRE....... Runoff CN-Area ..................... 4.01
Long Lake Subdivision - SWMP Revision 2 - Appendix A- January 2002
K.\01\01-110\01113\H&H\SWMP\Revision_Jan2002\OTHER AREA ReportRevision2.doc W&R Project #201113
LONG LAKE SUBDIVISION
PONDPACK OUTPUT FOR OTHER AREA (BELOW DAM)
Type.... Master Network Summary Page 1.01
Name.... Watershed
File.... K:\01\01-110\01113\H&H\SWMP\PPW\BELOW DAM OTHER AREA.PPW
Default Network Design
Total
Depth
Return Event in
------------ ------
2-YR 3.6000
10-YR 5.3800
MASTER DESIGN STORM SUMMARY
Storm File, ID NCWAKE.RNQ Type II
Rainfall
Type RNF File RNF ID
---------------- -------- ------------
Synthetic Curve SCSTYPES TypeII 24hr
Synthetic Curve SCSTYPES TypeII 24hr
MASTER NETWORK SUMMARY
SCS Unit Hydrograph Method
(*Node=Outfall; +Node=Diversion;)
(Trun= HYG Truncation: Blank=None; L=Left; R=Rt; LR=Left&Rt)
Return HYG Vol Qpeak
Node ID
------ Type Event ac-ft Trun hrs
------
OTHER AREA -----
POST. ----
AREA ------
2 ---------- --
1.464 ---------
12.0100
OTHER AREA POST AREA 10. 2.589. 12.0100
OTHER AREA PRE AREA 2. .290 12.1200
OTHER AREA PRE AREA 10 .865 12.0800
*SE CORNER JCT 2 .290 12.1200
*SE CORNER JCT 10. .865 12.0800
*SE CORNER2 JCT.. 2 1.464 12.0100
*SE CORNER2. . JCT 10. 2.589 12.0100
Max
Qpeak Max WSEL Pond Storage
cfs ft ac-ft
------- -------- ------------
22.89
39.79.
2.45.
10.57
2.45
10.57.
22.89.
39.79.
Long Lake Subdivision - SWMP Revision 2 - Appendix A- January 2002
K:\01\01 -11 0\01 113\H&H\SWMP\RevisionJan2002\OTHER AREA Report_Revision2.doc W&R Project #201113
LONG LAKE SUBDIVISION
PONDPACK OUTPUT FOR OTHER AREA (BELOW DAM)
Type.... Design Storms
Name.... Type II
Page 2.01
File.... I:\ENGFILE\HAESTAD\PPW RAINFALL DATA\WAKE CO\NCWAKE.RNQ
Title... Long Lake Subdivison
Stormwater Management Plan
W&R Project #200147
Drainage Area Downstream of Long Lake Dam that drains
AWAY FROM the outlet of Long Lake. This water goes
through the exisiting developments south of Long Lake
and crosses under US70 at a separate point south.
DESIGN STORMS SUMMARY
Design Storm File,ID = NCWAKE.RNQ Type II
Storm Tag Name = 2-YR
Data Type, File, ID =
Storm Frequency =
Total Rainfall Depth=
Duration Multiplier =
Resulting Duration =
Resulting Start Time=
Synthetic Storm SCSTYPES.RNF TypeII 24hr
2 yr
3.6000 in
1
24.0000 hrs
.0000 hrs Step= .1000 hrs End= 24.0000 hrs
Storm Tag Name = 10-YR
Data Type, File, ID = Synthetic Storm SCSTYPES.RNF TypeII 24hr
Storm Frequency = 10 yr
Total Rainfall Depth= 5.3800 in
Duration Multiplier = 1
Resulting Duration = 24.0000 hrs
Resulting Start Time= .0000 hrs Step= .1000 hrs End= 24.0000 hrs
Long Lake Subdivision - SWMP Revision 2 - Appendix A- January 2002
K:\01\01-110\01113\H&H\SWMP\Revision_Jan2002\OTHER AREA ReportRevision2.doc W&R Project #201113
LONG LAKE SUBDIVISION
PONDPACK OUTPUT FOR OTHER AREA (BELOW DAM)
Type.... Tc Calcs Page 3.01
Name.... OTHER AREA
File.... K:\01\01-110\01113\H&H\SWMP\PPW\BELOW DAM OTHER AREA.PPW
TIME OF CONCENTRATION CALCULATOR
Pre-Development
------------------------------------------------------------------------
Segment #1: Tc: TR-55 Sheet
Mannings n
Hydraulic Length
2yr, 24hr P
Slope
Avg.Velocity
.2400
137.00 ft
3.6000 in
.036500 ft/ft
.17 ft/sec
Segment #1 Time: .2268 hrs
------------------------------------------------------------------------
Segment #2: Tc: TR-55 Shallow
Hydraulic Length
Slope
Unpaved
Avg.Velocity
788.00 ft
.059645 ft/ft
3.94 ft/sec
Segment #2 Time: .0555 hrs
------------------------------------------------------------------------
-------------------------
-------------------------
Total Tc: .2823 hrs
Long Lake Subdivision - SWMP Revision 2 - Appendix A- January 2002
K:\01\01-110\01113\H&H\SWMP\Revision-Jan2002\OTHER AREA ReportRevision2.doc W&R Project #201113
LONG LAKE SUBDIVISION
PONDPACK OUTPUT FOR OTHER AREA (BELOW DAM)
Type.... Tc Calcs
Name.... POST TC
Page 3.02
File.... K:\01\01-110\01113\H&H\SWMP\PPW\BELOW DAM OTHER AREA.PPW
TIME OF CONCENTRATION CALCULATOR
Post-Development
------------------------------------------------------------------------
Segment #1: Tc: TR-55 Sheet
Mannings n
Hydraulic Length
2yr, 24hr P
Slope
Avg.Velocity
.1500
137.00 ft
3.6000 in
036500 ft/ft
.24 ft/sec
Segment #1 Time: .1557 hrs
------------------------------------------------------------------------
Segment #2: Tc: TR-55 Shallow
Hydraulic Length
Slope
Paved
Avg.Velocity
788.00 ft
.059650 ft/ft
4.96 ft/sec
Segment #2 Time: .0441 hrs
------------------------------------------------------------------------
-------------------------
-------------------------
Total Tc: .1998 hrs
Long Lake Subdivision - SWMP Revision 2 - Appendix A-
K:\01\01-110\01113\H&H\SWMP\Revision-Jan2002\OTHER AREA Repoq_Revisionldoc
January 2002
W&R Project #201113

LONG LAKE SUBDIVISION
PONDPACK OUTPUT FOR OTHER AREA (BELOW DAM)
Type.... Tc Calcs
Name.... POST TC
Page 3.03
File.... K:\01\01-110\01113\H&H\SWMP\PPW\BELOW DAM OTHER AREA.PPW
------------------------------------------------------------------------
Tc Equations used...
------------------------------------------------------------------------
==== SCS TR-55 Sheet Flow
Tc = (.007 * ((n * Lf)**0.8)) / ((P**.5) * (Sf**.4))
Where: Tc = Time of concentration, hrs
n = Mannings n
Lf = Flow length, ft
P = 2yr, 24hr Rain depth, inches
Sf = Slope, %
==== SCS TR-55 Shallow Concentrated Flow
Unpaved surface:
V = 16.1345 * (Sf**0.5)
Paved surface:
V = 20.3282 * (Sf**0.5)
Tc = (Lf / V) / (3600sec/hr)
Where: V = Velocity, ft/sec
Sf = Slope, ft/ft
Tc = Time of concentration, hrs
Lf = Flow length, ft
Long Lake Subdivision - SWMP Revision 2 - Appendix A- January 2002
K:\01\01-110\01113\H&H\SWMP\Revision_Jan2002\OTHER AREA Report_Revision2.doc W&R Project #201113
LONG LAKE SUBDIVISION
PONDPACK OUTPUT FOR OTHER AREA (BELOW DAM)
Type.... Runoff CN-Area
Name.... OTHER POST
Page 4.01
File.... K:\01\01-110\01113\H&H\SWMP\PPW\BELOW DAM OTHER AREA.PPW
Title... Post Development
RUNOFF CURVE NUMBER DATA
Post Development
--------------------------------------------------------------------------
Impervious
Area Adjustment Adjusted
Soil/Surface Description
-----
- CN acres %C gUC CN
-
-------------------------
B Grass ----
61 ---------
.410 ----- ----- ------
61.00
B Townhomes 85 5.670 85.00
B Single Family 1/8 ac lots 85 1.790 85.00
Road; C&G 98 .480 98.00
COMPOSITE AREA & WEIGHTED CN ---> 8.350 84.57 (85)
Type.... Runoff CN-Area
Name.... OTHER PRE
File.... K:\01\01-110\01113\H&H\SWMP\PPW\BELOW DAM OTHER AREA.PPW
RUNOFF CURVE NUMBER DATA
Pre-Development
---------------
Impervious
Area Adjustment Adjusted
Soil/Surface Description
----- CN acres %C RUC CN
---------------------------
B Grass ----
61 ---------
.410 ----- ----- ------
61.00
B Dirt Road 82 .070 82.00
B Woods 55 7.870 55.00
COMPOSITE AREA & WEIGHTED CN ---> 8.350 55.52 (56)
Long Lake Subdivision - SWMP Revision 2 - Appendix A- January 2002
K:\01\01-110\01113\H&H\SWMP\Revision_Jan2002\OTHER AREA Report_Revision2.doc W&R Project #201113
LONG LAKE SUBDIVISION - HYDROGRAPHS FOR OTHER AREA (BELOW LONG LAKE)
Hydrograph for 2-yr Event
OTHER AREA PRE vs POST
w
0
U.
Hydrograph for 10-yr Event
OTHER AREA PRE vs POST
w
LL
__..
40 .......- --..._,._...-.-.-_....... ....... ............ .......
- -=-- = - --- -- - - - - - ---- ..- -- -
35
30 .- -
25
0
6 8 10 12 14 16 18 20 22 24
Time (hrs)
Plotted Curves
OTHER AREA POST 2-YR
OTHER AREA PRE 2-YR
Plotted Curves
OTHER AREA POST 10-YR
OTHER AREA PRE 10-YR
Long Lake Subdivision - SWMP Revision 2 - Appendix A- January 2002
K:\01\01-110\01113W&H\SWMP\Revision_Jan2002\Other Area Graphs-Revision2.doc W&R Project #201113
8 10 12 14 16 18 20 22 24
Time (hrs)

V
13
CD
Q.
R,
to
APPENDIX B
WATER QUALITY SUPPORTING
CALCULATIONS
Long Lake Subdivision January 2002
SWMP Revision 2 W&R Project No. 201113
Project Name: Long Lake
Project No. DWQ 011549
SUBMITTED DESIGN: REQUIRED DESIGN:
elevations #VALUE! average depth status
Bottom of Basin (ft) 382
Permanent Pool (ft) 385 3 ft. depth ok
Temporary Pool (ft) 386.33 1.33 ft. depth ok

areas
Permanent Pool SA (sq ft)
379174 sq. ft.
ok
Drainage Area (ac) 649.6
Impervious Area (ac) 139.86 21.5 % -

volumes
Permanent Pool (cu ft)
Temporary Pool (cu ft) 630748.8 574825 cu. ft. ok
Forebay (cu ft) #VALUE! % #VALUE!

other parameters
SA/DA 0 1.34 -
Orifice Diameter (in) 10 2.14 cfs drawdown -
Design Rainfall (in) 1 3.4 day drawdown ok
Linear Interpolation of Correct SAIDA***
% Impervious
Next Lowest 20
Project Impervious 21.5
Next Highest 30
3 ft. Permanent Pool Depth
SA/DA from Table
0.97:
1.34
2.88
Wulte Homes WRES Project 201113.
mWater Quality Run Off Requirements
Total Drainage Basin
Existing Conditions
Impervious Surface
DB-1
DB-2
DB-3
Lower Basin
On-site
Off-site
Total
Existing. Conditions
Impervious Surface
36.6 Acres
1.7 Acres
12.9 Acres
Raleigh, NC Long Lake
Dunnaway
649.6 Above Dam 674.5 Total
24.9 Below Dam
Proposed. Development (Pulte)
Impervious Surface
36.6 Acres
1.7 Acres
12.9 Acres
22.3 Acres
21.5 Acres
95 Acres
14.62%
Include Lake 84.3 Acres Include Lake
21.5 Acres
157 Acre's
Impervious Surface 24.17%
Proposed On-ste
26.48 Acres R-O-W
152.16 Acres 4DU/ac @ 38% imp
Total
Run-Off Calculations
v=0.05+0.0091
V= = 0.26753 in/in Runoff
Volume= (Design rainfall)(RV)(Drainage Area)
Volume= 1 inch rainfall * 0.2675 (in/in) * 1/12(ft/in)*649.6 acres
Volume= 14.48 acre-ft Runoff
Elev. os.. Volume
LONG LAKE
m
W
Plotted Curves
- LONG LAKE
26.48 Acres
57.82 Acres
84.30 Acres
Long. Lake Stage-Storage
Volume Elev.
(ac-ft) (ft)
0 368.5
18.63369 369.5
39.82236 370.5
58.75291 371.3
88.60317 372.5
113.553 373.5
126.7305 374
.185.5929 376
252.5825 378
Elevation
369.28 M.S.L
Lake Elevation to Store
Runoff from Development
0 20 40 60 80 100 120 140 160 180 200 220 240
Volume (ac-ft)
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WITHERS & RAVENEL
CULVERT SIZING CALCULATIONS
WEST STREAM CROSSING
EAST STREAM CROSSING
LONG LAKE SUBDIVISION
Raleigh, North Carolina
i 0 0 ?Ott?
Prepared for:
PULTE HOME CORPORATION
401 Harrison Oaks Boulevard, Suite 250
Cary, North Carolina 27513
Prepared by:
WITHERS & RAVENEL
111 MacKenan Drive
Cary, North Carolina 27511
January 2002
W&R Project No. 201113
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William E. Lee, P.E.
. LONG LAKE SUBDIVISON
SUMMARY OF ROAD CROSSING CULVERT CALCULATIONS
The proposed Country Trail Road in the Long Lake Subdivision crosses two streams that are
tributary to Long Lake and are designated as West Stream and East Stream. The proposed
culverts for the road crossings were evaluated using the US Army Corps of Engineers HEC-RAS
Release 2.2 computer model. HEC-RAS was used to generate backwater elevations upstream of
both road crossings, as well as to generate the 100-year water surface profiles for the stream
reaches. Based on the HEC-RAS model, the structures for both road crossing were sized
appropriately as described in the following paragraphs. There are additional calculations
attached to this summary.
West Stream Crossing
The proposed culverts on the West stream crossing were sized such that the 100-year backwater
elevation would not exceed the previously approved 100-year water surface elevation at the
upstream property line of approximately 395'. In addition, the crossing was designed to comply
with the City of Raleigh's minimum freeboard requirements of 2 feet for the 10-year storm and 6
inches for the 100-year storm. Following is a summary of the proposed culvert structure:
? Two 48-inch reinforced concrete circular pipe (RCP)
? Upstream Invert= 382.3'; Downstream Invert= 379'
? Approximate length of pipe = 105 ft
? Headwall and endwall
? Backwater elevation ;t? 391.4'
? Minimum Elevation for the Top of Road ;t? 400'
? Maximum Depth of water upstream of road = 9.1 ft
? Calculated Freeboard for 100-yr storm ? 8.6 ft
East Stream Crossings
The proposed culvert structures for the East stream crossing were sized such that there is no rise
in the post-project 100-year water surface elevation compared to the existing conditions at the
eastern property line on Reach 2 of the stream. In addition, the crossing was designed to comply
with the City of Raleigh's minimum freeboard requirements of 2 feet for the 10-year storm and 6
. inches for the 100-year storm. To achieve this end, there are two alternative culvert structures
proposed for the East Road Crossing: three 8' span x 6' rise box culverts and two 12' span x 6'
rise box culverts. The intention is to bid out both alternatives and construct the alternate of
choice. The following table summarizes the two alternatives' hydraulic conditions.
East Crossing Alternatives
Three 8'x6' Box Culverts Two 121x6' Box Culverts
Upstream Invert 376.36' 376.36'
Downstream Invert 375' 375'
Approximate Length 115 ft 115 ft
Headwall and Endwall Yes Yes
Backwater Just Upstream 384.05' 384.05'
Backwater at East Property Line 385.46' 385.46'
To of Road Min. Elevation 390' 390'
Max. Depth of Water Upstream 7.7 ft 7.7 ft
Calculated Freeboard for 100-yr 5.95 ft 5.95 ft
1 ne 1 vv yr water surface elevation at the eastern property line (SECNO 2092) for existing conditions = 385.49'
Long Lake Subdivision - Road Crossing Culvert Design 1 January 2002
KA01\01-1 10\01 113\H&HTloodstudy\Report\Road Crossing Culverts Summary_Revised 28Jan02.doc W&R Project #201113
LONG LAKE SUBDIVISON
SUMMARY OF ROAD CROSSING CULVERT CALCULATIONS
The following information is provided in response to the NC Division of Water Quality's Approval of 401
Water Quality Certification and Additional Conditions, WRP, Neuse River Buffer Rules Letter dated
December 21, 2001.
a. Cross-sections depicting the width of the culverts to be used.
Response: Upstream and downstream cross sections for both proposed stream crossings are included
in the HEC-RAS output data for Proposed Conditions. These cross sections show the size of the
proposed culverts as well as the stream and floodplain profile.
b. How they will provide for low-flow passage of water and aquatic life (will they be placed below the
elevation of the streambed)?
Response: The inverts of the proposed culverts are currently set at the existing stream bottom
elevations. The existing stream bottom elevations were obtained from field survey data.
c. Will the culverts change the bankfull width of the stream?
Response: YES, at the upstream and downstream ends of the proposed crossings. As can be seen on
the cross sections included in this report, the combined width of the culverts at both crossing is
slightly larger than the existing channel width. For the West Stream Crossing, the existing channel
width is approximately 9 feet downstream and 17 feet upstream and two 48" RCP culverts 105 in
length are proposed for that crossing. Therefore, the culverts will be slightly feet wider than the
existing channel: For the East Stream Crossing, either two 12' wide by 6' tall box culverts or three 8'
wide or 6' tall box culverts are proposed. Either option will have a combined width of 24' at the
bottom of the channel, which is roughly 8 feet wider than the existing channel's width of 22 to 23 feet
over 115 linear feet. See attached figures.
d. Will inlet and outlet control protection or relocation of the stream be required?
Response: Headwalls and endwalls are proposed for each stream crossing, as well as rip rap energy
dissipater pads upstream and downstream of both crossings. As currently designed, the stream will
not have to be relocated upstream or downstream of the proposed culvert crossing- the pipe inlets and
outlets are aligned with the existing stream channel. The culverts will replace the existing streams for
approximately 165 linear feet on the west crossing and 115 linear feet on the east crossing.
e. How will they ensure that dis-equilibrium of streambeds or banks, adjacent to or upstream and
downstream of the above structures will not occur?
Response: As can be seen by comparing the existing and proposed conditions cross-sections provided
in this report, the culverts will be placed such that the existing flow pattern in the stream and
overbank areas is not altered from left to right. Both streams currently have unequal floodplains -
more flow on one side of the floodplain than the other.
f. Whether either of these crossings are within a FEMA-designated floodway?
Response: NO. Neither of the proposed stream crossings is within a FEMA Flood Zone.
Long Lake Subdivision - Road Crossing Culvert Design 2 January 2002
KA01\01-1 10\01 113\H&H\Floodstudy\Report\Road Crossing Culverts Summary_Revised 28Jan02.doc W&R Project #201113
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NOTE: CLASS "B" RIPRAP TO BE USED TO TRACT 6 AIR-RELEASE ~ B~~• J 1 "x$" yEE ~ "x " E w/ 12" G. V.'S
STABILIZE SIREAMBANK ONLY IN IMMEDIATE PROPOSED PUBLIC LONG LAKE SUBDIVISION VALVE \ ~ ~~ALVE ~ J ~ g' VICINITY OF HEADWALLS, AS SHOWN. STORM EASEMENT ~2"x8" TEE w/ 2 12" G.V.'S \ CL ROAD LINE TABLE 1s T / ,
' / LINE LENGTH BEARING
U , , , NEUSE RIVER BUFFER L6 133.92 N5523'33"E
& 1 8" G.V. (TYP.) ~ L7 189.54 N32'25'S9"E
Z NEUSE RIVER BUFFER 5' SIDEWALK PROPOSED PUBLIC
W28 I,~ ` ' , 8A B.O. STORM EASEMENT
MH1
Z ~ ` 17+ - T 8+00 0 3,, NW25A FIRE HYDRANT
~ \w 00 2 I ~ a ASSEMBLY a „
III ~ \ 6 GATE VALVE
12"x6" TEE ~
C621 LNG ~o w/ BLOCK
( REMOVE EXISTING
12" BLOW-OFF ~ ~ ~P~ 0 R/W 12" BLOW-OFF
~ I VALVE ~ \ 41' B-B ROAOWs1~ g" g / b o ti - I ~ TRACT 4 ~ ~ ~j/ ASSY. VALVE
~o i UTILITY INSTALLATIONS AND OTHER PUBLIC ~ ~ STUB FOR U LNG SIDEWALKS AND HANDICAP FACILITIES, INCL D
FUTURE STREET RAMPS ARE TO BE CONSTRUCTED ON ALL STREETS
x SEE GENERAL AS SPECIFIED BY CITY CODE. THESE FACILITIES
HAVE BEEN APPROVED BY THE CiTY OF RALEIGH ~ NOTE #8 BELOW
AND SHALL BE SO INSTALLED UNLESS A CHANGE IS AUTHORIZED BY WRITTEN APPROVAI» PUBLIC
~ MN2 R CORDED SANITARY SEWER EASEMENTS ARE TO BE E
~ I ~ $ h \ ~ \ LONG LAKE SUBDIVISION 111 / / I 30" C&G (TYP.) EXISTING 40' PUBLIC / ~ PRIOR TO FINAL ACCEPTANCE.
~ , , ~ 5' SIDEWALK SIGNATURE:
C622 ENGINEERING
I ~ III I ~ ~ ~ FIRE HYDRANT S.S. EASEMENT w/18" S.S.
ASSEMBLY B~1 2001 PGS. 948,949 PUBLIC UTILITIES PROP.
PROPOSED 20' PUSUC ' ~ ~ I ~ 6" GATE VgLVE 2 B R/W TRANSPORTATION
S.S. EASEMENT w/8" S.S. ~ ~ ~ 12"x6" TEE C5 C6 NEUSE RIV FES29 ~ ~ I I I w/ BLOCKING L=158.28' L=947.29' B NEUSE RIVER BUFFER PROPOSED PUBLIC ~ ~
STORM EASEMENT Q x CONSERVATfON ~ ~ 0
EXISTING 20~ PUBUC R=395.00' R=900.00'
5'x4'x7 2" RIPRAP APRON w ~ ( ~ CHORD= 157. 3' CHORD= 904.16' 2C
w/ CLASS A STONE N ' ~ I f ~ ~ S.S. EASEMENT w/8~~ S.S. BEARNJG=N4T5446"E BEARING=S6735'10"W LEVEL SPREADER PER C.O.R. PROP.
i ~ BM 2001 PGS. 948,949 REQUIREMENTS & 12'x6'x18" 1 , ~ R W /
TRACT 3 PROPOSED PUBUC " 12"x12 TES w 3 RIPRAP APRON w/ CLAS5 B
LONG LAKE SUBDIVISION STORM EASEMENT COUNTRY TRAIL PLAN VIEW 12" GATE VALVES (TYP.) jJ OTE$ STONE
430 (>'ENERAL NOTES -UTILITIES
430 1. Ap cansbuctlon shall ~ h accordance with (ally of Raldgh and NCDOT Standards R Speciflcoltonz
Z Topographk hformatkn provided Dy Nithers ~ Rarsnd, Engheerhg Er Surveying, tnc. 3. The exfsthg ui9'iDes @hawgr on the plays oro hosed on fhe best available hfamotion, Dul can be
eonsNered only os aplwoxirnate. My potentid con8kb wt~ proposed eonstructlon didl be roporhd to
LOW POINT ELEV = 390.19 Me project enghar la review prior to beghnhg construction. 4. Ap fire hydrants shelf be hstoped on o 6-hch lead wNh a hydrant branch rdwe. the brandy vdve shop
LOW POINT STA = 2+31.35 ee no greota than one foot from the mate and hside the pavement when posdWa The rdve dwfl be
mechankdly restrahetl to the main. PVI STA = 23+20,70 5. f'Me hydrants shill oe pohtee red with high ra8ectire sissy caps ad Uonnets
PVI STA ~ 9±9992 HIGH POIM ELEV =406.54 ELEV = 380.00 a. aN water mains shat be hstaped wiM a mhhwm corer of 4 feel tram the top of the Rni~ed found to PVI arown.
~ ~ ° '~~5t Q~ HIGH POINT STA = 16+50.63 = 1 .22 7. ~ girt mobs shag be made of docile Moo ptpa and shat tk pass 50, 51, a 52 designed h accordance A,D.
AD. = 5. OW POINT SfA~.' ~ 400.8 5 i = 17# wRh AWWA Blooded C-150-76. A mhimwn wakhg preastne of 150 shah be provided. K = 50.31 8. An sonitay newer mains ahoy hove o minhnan cover of 5 feet h aeon to the pipe sown unless
• • • • ~ • ~ ELEV = 410.00 ductile Mon p(pe b prodded h pose i beddhg where the mhhwm cave be 3 feel Ail eanitay 420 sewer mains ahoi hog o mhhsun cover of 3 feet h non-traff+c eea to the pipe crown.
420 K = .07 PV1 STA ~ 13144.26 A.D. _ -7.69 v 9. SonRary sewer mad+oles sho8 be 4 legit h diameter unless otherwise spedfled on the plan.
399• K = 50.04 10. Sanitary xwer manhob tops shop 6e set rhrdr with pavement h batik aroos and chap be set at least one foot d~owe ground feud h rron-troffk seas unless othdwise sped5ed.
A.=4. 11. The cantracta shill noQ1y the City of Raleigh Engineerhg Department of 890-J030 to sd~edute
conshvctkn hspectkhs. ~ 12 Sanitary sewer and water pipe trench excavation and tackfRing shag be performed h accadance wRh
K=5.13 385.00' VC ~ O pty of Rdeigh Standard Spedfkations. 13. Santary sewer main easements shah be graded smooth, free fran rock, bouidera, roots, stumps, ao0
O ~ other debrb and seeded and mulched upon cornptetkrr of construction. N ~ 14. fie flow chamd tlwou~ mehdes should be smooth and shall conform to the ~ and the slope of
z 0 ~ rte} the enterhg and exithg sewer moth.
~ 15. Ap sanitary sewer shall be •pubf~ unless othawae apeafied. ctJ'd' e'- ~ f8. Conlracta shop frdd-vwri locatkn and elevation of ex+ding water mobs, aewa manholes, and storm
o r. o ~ o ~ lx h • O N ~ ~ N structures prior to hterconhection wish o proposed improvement.
V: .N~. W ~ O J N~ f ° ~ ~ ~ ~ ~ ~ AON OF WATER MAINS TO SEWERS
4~0 O O~ h N ~p~p N N o 0 0 N M N M N HORIZONTAL REtA N ~ 0 410 ~ ~ Q ~ > ~ i"' ~ ~ M ~ !+Voter mobs shah be laid at least 10 feet loterdly from exMhg a sewers, unless the water mah is laid
V >W ^ g n! M~ M ttl N V N Cp l.j ^ O ~ ~ ~ ~ z ~ 'a' O ~ ~ ~ h a sepeate trench, wkh the devotion o11he bottom of the water mah at least t8 hches above the top
p F~-_y,~ ~ ^N2p N J .h- M ~ oMi~ li.~ ONi G ~v ~ + O ~ O 2~ N~ O O O o} the sewer.
~ ~ w VER11CAi. RELAAON OF WATER MAINS TO SEWERS
fn ~ Gj ~~gK~ ~ ~ ~$p Mo2~ ~ ~ a+o W G ~ LZ Z N W W W Nhaaver a wotor mah awes ovx a sewer, the water mah chap be loll wRh the devnttan of the
V1 V ~ ~ 4 ~ > > Dolton of the wale main of least 18 hdres abovw fhe sewer, unless Doth the water mah and sewer mah U 0 ~ Z~ z m~ standards fa o dktance f'j !9 N n ~ ~ - shill De constructed of ductie Mai and with jdnts that ore aQWvatent to water
rn~_ ~z_ 2. W O of 10 feet on each she of the aasshq.
~ iD + G~ ~ ~ ~ TNrcnevwr o water mob crosses undo a sews, both the water mah and the sews shop be
-1. ~ M O ~ constructed of ductile Mon aril wilh Jahts equiraleat to wata mob standards fa a dbtance of 10 feet on • . O pp N? C p O 00 h ~ ~ of !Ae aosthp and mohtoh a mhMnum of 18 hd~ vwrttcd separotton. A twtion of water mob
N tt7 c0 C N pipe shill M eMliMed of Me petet of aeNha ~ N tt' N tfj r- ~
v > r. ~ ~ ~ ~i ~ oo co r7 ~r 400 ~ ~ ~ o0 00'~ ao ~ tr °Q VERTICAL RELATION OF SANITARY R MAINS ~
400 ~ ~ ~ ~A i.° ~ ° ~ "'t- ~ WATER MAINS TO STORM SEWER
° O ~ , + O O N W z O sanit sewer a water mote h over a under o slam ~rer, o verlicd
s d. N t' f" N O t,-, F- ~ N - O Mherrover o a~' I be mohtoh un~ botA IMres ae of duct9e Mon a anoased h oawxate. N W W N N ~ ~ ~ ~ ~ ¢ ~ sepaotkn of 12 fiches steel eel,
~a~» N WWW 2 F--,..~~
~ N~zz ~ 1,,,,~>y > ~ (nom........ Z Z z sewer mdra twelve 2 h steel bw ~ t>~. U cn tY Ail
2 Ail aanNarr sewer swan eerMwsiaes steal !M irtepsd werktag 'epstnanv' fraw as manhole, My ewoepGars EO 9As method 6e approved M the
.04% 15 in.RCP ~ PubBc Deporbnent.
137' ~
GENERAL NOTES
41 390
390 1. Ail oonef>roctlsn shop bt h aooordsace rlfh arrant CRy d ttalei~ and NCDO1 Standards ~
2 I orb twmou! radp chap be 25 feet unless otherwise apedRed an Mxs plaaa. 15 i 3, rare htersaction of rite-ot way ah~ De rounded with o rodbs of 20 feet u~dess oihawtae
' specified on the tdons.
4. The controcta shill dear and grade the entiro right-of-way width wRhh 100 feet of ail street 2 htersectiona
° aril ~ necessar to 15' x 35D' ' t dlstaice 5. The carbacta shop ilea grade y prowde sgA trl of ail htemd aubdivbion street interactions.
ti wRhh the de meet shop be mdrrtahed the Homeowner's Assodotkrr. A~ s'P~ ~P
2~ 1. The subdNision file msnDa b S-88-01. 8. Stone kloson Ortw bnprovwmertts not shown on thla pion par Condtfon 13 h the Condlltons of
41' Approved fa S-88-01. I
TWIN 48" RCP 1.00 380 GRAPHIC SCALE
380 INV. ~ELEV.~ 380.69 15 in.RCP
so o z5 so roo loo
w~
tt
o rn ~ cfl (IN FEET )
a ~ o ~ ~ °p• ~ 00 - ' ULUERTS i5 y 1 inch = 50 it. ~~,M ~ 3 8x6 80X C
~ ~ ~ ° x INV. ELEV. 375.73 ~ '
t0 d, J~p x r SCALE. 1 -50 HORIZONTAL w Sao r ~ ~ ~ » s
w M DESIGN BY OTHERS) 1 =5 VERTICAL ~ ~°00 o•-r,,+~
~N~ h0~ lJ ~J ~ O`~L~~W~ 000O~cV ao ~ o l~ Sri o N o0 370
3JO ~~.~jM NMIaJM MIS O} wMM O~~M
:~d~~~~ w ~ztn = + ~ti ~~wazZO cvwz=
ap •-WO> n,) v~j~K Mks _ ~ ~ O
S H~Z = ^~a?Zp g N[r~ ~ ¢ ~ X !lQ..X~»> ~ Q~> ~nwa.z?z r ~-z~Z w ~ tn~__
c~i~25a''z_~z
10+00 11+00 12+00 13+00 14+00 15+00 16+00 17+00 18+00 19+00 i 9+00 20+00 21 +00 22+00 23+00
r.nTrNTRV TRAiT. PR~FTi.F
CAD Flle Designer Scale J"'V
Revisions
r WITHERS & IPAVENEL Eng)needng & Survey/ng, Inc. No. e LONG LAKE SUBDIVISION COUNTRY TRAIL PLAN AND PROFILE W&R f =50 H. Drown Sy Dote Shoat No.
111 MocKenon Drive • Cory, N.C. 27511 W&R 10 04 Chocked B Job No.
• Y 201113oJ16
919-469-3340 FAX [phone] RALEIGH WAKE COUNTY NORTH CAR NOR?H CAROLINA STA 1E r<r.J