BMP calculations

4.
KENNEY DESIGN GROUP, PA
1216 PARSONS TRAIL
DENVER, NORTH CAROLINA 28037
PH: 704-377-6099
EMAIL: [e-mail]
LICENSE NO. C-1986
Harkey Creek Subdivision
Union County, North Carolina
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BMP and Detention Calculations

Wet Pond Calculations
Drainage Area =
CN =
Tc =
Impervious Area =
Rv =
WQv =
WQv =
Stage at Treatment Vol =
Permanent Pool Elev. =
Vpp =
App =
Dave =
Min SAIDA Ratio =
SA
DA =
SAIDA Ratio Provided =
Main Pool Volume =
Required Forebay Volume =
Forebay Volume Provided =
Orifice Sizing
Time to release WQv =
Release Rate =
Average Head =
Orifice Area =
Orifice Diameter =
3.87 ac
86
0.08 hrs
1.99 ac
51 %
0.51
0.17 ac -ft
7204 fta
655.7
655.0
18562 ft3
5791 fta
3.21 ft
1.74
0.13 ac
3.87 ac
3.44
18552 ft'
2784 ft'
-8119 ft3
57 hrs
0.035 ofs
0.35 ft
0.012 ft2
1.50 in
Project: BMP 1 Wet Pond
Date: 14 -Jun -17
Post Development
Soils = Group C
CN = 98
CN = 74
CN = 70
CN = 85
Water Quality Volume
Water Quality Volume
652 to 655
1.99 ac
1.88 ac
0 ac
0 ac
Imperv. Total
Lawn, good
Woods, good
Gravel

WPA Detention
Results Summary
Pre CN =
70
Post CN =
86
Pre Drainage Area =
8.52 ac
Post Drainage Area =
3.87 ac
Pre Tc =
17.4 min
Post Tc =
5 min
2 yr 24 hr Storm
Max Stage = 656.13
Pre Dev Peak Flow = 7.15 cfs
Post Peak In -Flow = 12.19 cfs
Post Dev Routed Flow = 1.91 cfs
25 yr 24 hr Storm
Max Stage =
656.69
Pre Dev Peak Flow =
26.49 cfs
Post Peak In -Flow =
27.73 cfs
Post Dev Routed Flow =
19.61 cfs
50 yr 24 hr Storm
Max Stage = 656.84
Peak Routed Flow = 20.78 cfs
ok
ok
W,

WP -I Type 1124 -hr 2 -yr, 24 hr Rainfall=3. 12"
Prepared by HydroCAD SAMPLER 1-800-927-7246 www.hydrocad.net Printed 6/14/2017
H droCADM} 10.00-16 Sampler sln 501551 02015 HydroCAD Software Solutions LLC
This report was prepared with the free HydroCAD SAMPLER, which is licensed for evaluation and
educational use only. For actual design or modeling applications you must use a full version of HydroCAD
which may be purchased at www.hydrocad.net. Full programs also include complete documentation,
technicalsupport, training materials, and additional features which are essential for actual design work.
Summary for Subcatchment SS: PRE
Runoff - 7.15 cfs @ 12.12 hrs, Volume= 0.555 af, Depth= 0.78"
Runoff by SCS TR -20 method, UH=SCS, Weighted -CN, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Type Il 24 -hr 2 -yr, 24 hr Rainfall=3.12"
Area (ac) CN Description
_..- 0.000 74 Grass
8.520 70 Woods
8.520 70 Weighted Average
Tc
Length
Slope
Velocity Capacity
Description
min
feet)
(ft{ft)
(ftlsec cfs
14.5
100
0.0200
0.12
Sheet Flow,
Grass: Dense n= 0.240 P2= 3.12"
2.9
480
0.0300
2.79
Shallow Concentrated Flow,
Unpaved Kv= 16.1 fos
17.4 580 Total

WP -9 Type 1124 -hr 2 -yr, 24 hr Rainfall=3. i2"
Prepared by HydroCAD SAMPLER 1-800-927-7246 www.hydrocad.net Printed 6/14/2017
HydroCAD010.00-16 Sampler s/n S01551 02015 HydroCAD Software Solutions LLC
This report was prepared with the free HydroCAD SAMPLER, which is licensed for evaluation and
educational use only. For actual design or modeling applications you must use a full version of HydroCAD
which may be purchased at www.hydrocad.net. Full programs also include complete documentation,
technicalsupport, training materials, and additional features which are essential for actual design work.
Summary for Subcatchment 3S: POST
[49] Hint: Tc<2dt may require smaller dt
Runoff = 12.19 cfs @ 11.96 hrs, Volume= 0.569 af, Depth= 1.77"
Runoff by SCS TR -20 method, UH=SCS, Weighted -CN, Time Span= 0.00-120.00 hrs, dt= 0.05 hes
Type II 24 -hr 2 -yr, 24 hr Rainfall=3.12"
Area (ac) CN Description
* 1.990
98
Impervious
* 1.880
74
Grass, good
* 0.000
70
Woods good
3.870
86
Weighted Average
Tc Length Slope Velocity Capacity Description
min feet fVft fk/sec cfs
5.0 Direct Entry,

WP -1 Type// 24 -hr 2 -yr, 24 hr Rainfall=3.12"
Prepared by HydroCAD SAMPLER 1-800-927-7246 www.hydrocad.net Printed 6/14/2017
HydroCAD010.00-16 Sampler stn 501551 02015 HydroCAD Software Solutions LLC
This report was prepared with the free HydroCAD SAMPLER, which is licensed for evaluation and
educational use only. For actual design or modeling applications you must use a full version of HydroCAD
which may be purchased at www.hydrocad.net, Full programs also include complete documentation,
tech n icalsu pport, training materials, and additional features which are essential for actual design work.
Routing by Stor-Ind method, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Starting Elev= 655.00' Surf.Area= 9,200 sf Storage= 27,045 cf
Peak Elev= 656.13'@ 12.17 hrs Surf.Area= 11,996 sf Storage= 39,280 cf (12,235 cf above start)
Plug -Flow detention time= (not calculated: initial storage exceeds outflow)
Center -of -Mass det. time= 1,152.9 min ( 1,972.6 - 819.6 )
Volume Invert
Avail.Storage Storage Description
-96,939
Summary for Pond 4P: Wet Pond 3
Inflow Area =
3.870 ac,
Inflow Depth = 1.77"
for 2 -yr, 24 hr event
Inflow -
12.19 cfs @
11.96 hrs, Volume=
0.569 of
Outflow =
1.91 cfs @
12.17 hrs, Volume=
0.567 af, Atten= 84%, Lag= 12.8 min
Primary -
1.91 cfs @
12.17 hrs, Volume=
0.567 of
Routing by Stor-Ind method, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Starting Elev= 655.00' Surf.Area= 9,200 sf Storage= 27,045 cf
Peak Elev= 656.13'@ 12.17 hrs Surf.Area= 11,996 sf Storage= 39,280 cf (12,235 cf above start)
Plug -Flow detention time= (not calculated: initial storage exceeds outflow)
Center -of -Mass det. time= 1,152.9 min ( 1,972.6 - 819.6 )
Volume Invert
Avail.Storage Storage Description
-96,939
#1-- 651.00'
cf Custom Stage Data (Prismatic) Listed belowW
Elevation Surf.Area
Inc.Store Cum.Store
_ (feet) _--
(sq -ft)---
-(cubic-feet) (cubic -feet)
651.00
3,490
0 0
652.00
5,900
4,695 4,695
654.00
7,900
13,800 18,495
655.00
9,200
8,550 27,045
656.00
11,800
10,500 37,545
658.00
14,798
26,598 64,143
660.00
17,998
32,796 96,939
Device Routing_Invert
Outlet Devices
#1 Primary
653.90'
24.0" Round Culvert
L= 30.0' RCP, square edge headwall, Ke= 0.500
Inlet/ Outlet Invert= 653.90'/653-60' S= 0.0100 'P Cc= 0.900
n=0-012, Flow Area= 3.14 sf
#2 Device 1
655.00'
1.5" Horiz. Orifice/Grate C= 0.600
#3 Device 1
656.00'
12.0' long Sharp -Crested Rectangular Weir 2 End Contraction(s)
Primary OutFlow Max=1.89 cfs @ 12.17 hrs HW=656.13' (Free Discharge)
t--4=Culvert (Passes 1.89 cfs of 15.78 cfs potential flow)
h
2=Orifice/Grate (Orifice Controls 0.06 cfs @ 5.12 fps)
3=Sharp-Crested Rectangular Weir (Weir Controls 1.82 cfs @ 1.18 fps)

WP -1 Type 11 24 -tar 25 yr, 24 hr Rainfall=5.76"
Prepared by HydroCAD SAMPLER 1-800-927-7246 www.hydrocad.net Printed 6/14/2017
HydroCADO 10.00-16 Sampler sfn 501551 4 2015 HydroCAD Software Solutions LLC
This report was prepared with the free HydroCAD SAMPLER, which is licensed for evaluation and
educational use only. For actual design or modeling applications you must use a full version of HydroCAD
which may be purchased at www.hydrocad.net. Full programs also include complete documentation,
technicalsupport, training materials, and additional features which are essential for actual design work.
Summary for Subcatchment SS: PRE
Runoff - 26.49 cfs @ 12.10 hrs, Volume= 1.857 af, Depth= 2.62"
Runoff by SCS TR -20 method, UH -SCS, Weighted -CN, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Type Il 24 -hr 25 -yr, 24 hr Rainfall=5.76"
Area (ac) CN Description
0.000 74 Grass
8.520 70 Woods
8.520 70 Weighted Average
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
14.5 100 0.0200 0.12 Sheet Flow,
Grass: Dense n= 0.240 P2= 3.12"
2.9 480 0.0300 2.79 Shallow Concentrated Flow,
Unpaved Kv= 16.1 fus
17.4 580 Total

WP -1 Type// 24 -hr 25 -yr, 24 hr Rainfall= 5.76 "
Prepared by HydroCAD SAMPLER 1-800-927-7246 www.hydrocad.net Printed 6/1412017
H droCAD®10.00-16 Sampler sln S01551 Q 2015 HydroCAD Software Solutions LLC
This report was prepared with the free HydroCAD SAMPLER, which is licensed for evaluation and
educational use only. For actual design or modeling applications you must use a full version of HydroCAD
which may be purchased at www.hydrocad.net. Full programs also include complete documentation,
technicalsupport, training materials, and additional features which are essential for actual design work.
Summary for Subcatchment 3S: POST
[49] Hint. Tc<2dt may require smaller dt
Runoff - 27.73 cfs @ 11.95 hrs, Volume= 1.349 af, Depth= 4.18"
Runoff by SGS TR -20 method, UH=SCS, Weighted -CN, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Type II 24 -hr 25 -yr, 24 hr Rainfall=5.76"
Area (ac) CN Description
1.990
98
Impervious
1.880
74
Grass, good
0.000
70
Woods, gpod
3.870
86
Weighted Average
Tc Length Slope Velocity Capacity Description
min feet ft/ft(ft/sec) cfs
5.0 Direct Entry,

WPA Type 1124 -hr 25 -yr, 24 hr Rainfall=5.78"
Prepared by HydroCAD SAMPLER 1-800-927-7246 www.hydrocad.net Printed 6/14/2017
HydroCAD®10.00-16 Sampler sin S01551 0 2015 HydroCAD Software Solutions LLC
This report was prepared with the free HydroCAD SAMPLER, which is licensed for evaluation and
educational use only. For actual design or modeling applications you must use a full version of HydroCAD
which may be purchased at www.hydrocad-net. Full programs also include complete documentation,
technicalsupport, training materials, and additional features which are essential for actual design work.
Routing by Stor-Ind method, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Starting Elev= 655.00' Surf.Area= 9,200 sf Storage= 27,045 cf
Peak Elev= 656.69'@ 12.02 hrs Surf. Area= 12,829 sf Storage= 46,670 cf (19,625 cf above start)
Plug -Flow detention time= 1,111.1 min calculated for 0.725 of (54% of inflow)
Center -of -Mass det. time= 507-9 min ( 1,303.0 - 795.1 )
Volume Invert
Avail.Stora a Storage Description
Summary for Pond 4P: Wet Pond 3
Inflow Area =
3.870 ac,
Inflow Depth = 4.18"
for 25 -yr, 24 hr event
Inflow -
27-73 cfs @
11.95 hrs, Volume=
1.349 of
Outflow =
19.61 cfs @
12.02 hrs, Volume=
1.346 af, Atten= 29%, Lag= 4.0 min
Primary -
19.61 cfs @
12.02 hrs, Volume=
1.346 of
Routing by Stor-Ind method, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Starting Elev= 655.00' Surf.Area= 9,200 sf Storage= 27,045 cf
Peak Elev= 656.69'@ 12.02 hrs Surf. Area= 12,829 sf Storage= 46,670 cf (19,625 cf above start)
Plug -Flow detention time= 1,111.1 min calculated for 0.725 of (54% of inflow)
Center -of -Mass det. time= 507-9 min ( 1,303.0 - 795.1 )
Volume Invert
Avail.Stora a Storage Description
#1 651-00'
96,939 cf Custom Stage Data (Prismatic) Listed below
Elevation Surf.Area
Inc.Store Cum.Store
(feet)
(sq -ft)
cubic -feet cubic -feet
651.00
3,490
0 0
652.00
5,900
4,695 4,695
654.00
7,900
13,800 18,495
655.00
9,200
8,550 27,045
656.00
11,800
10,500 37,545
658.00
14,798
26,598 64,143
660.00
17,998
32,796 96,939
Device Routing
Invert
Outlet Devices
#1 Primary
653.90'
24.0" Round Culvert
L= 30.0' RCP, square edge headwall, Ke= 0.500
Inlet /Outlet Invert= 653.90'/653,60' S= 0.0100 'r Cc= 0-900
n= 0.012, Flow Area= 3.14 sf
#2 Device 1
655.00'
1.5" Horiz. Orifice/Grate C= 0.600
#3 Device 1
656.00'
12.0' long Sharp -Crested Rectangular Weir 2 End Contraction(s)
Primary OutFlow Max=19.36 cfs @ 12.02 hrs HW=656.67' (Free Discharge)
L-1=Culvert (Barrel Controls 19.36 cfs @ 6.16 fps)
T__2=0rificeiGrate (Passes < 0.08 cfs potential flow)
3=Sharp-Crested Rectangular Weir (Passes < 21.39 cfs potential flow)

WP -1 Type ll 24 -hr 50 yr, 24 hr Rainfall=6.48"
Prepared by HydroCAD SAMPLER 1-800-927-7246 www.hydrocad.net Printed 6/14/2017
H droCAD® 10.00-16 Sampler s/n 501551 02015 HydroCAD Software Solutions LLC
This report was prepared with the free HydroCAD SAMPLER, which is licensed for evaluation and
educational use only. For actual design or modeling applications you must use a full version of HydroCAD
which may be purchased at www.hydrocad.net. Full programs also include complete documentation,
technicalsupport, training materials, and additional features which are essential for actual design work.
Summary for Subcatchment 3S: POST
[49] Hint: Tc<2dt may require smaller dt
Runoff = 31.98 cfs @ 11.95 hrs, Volume= 1.570 af, Depth= 4.87`
Runoff by SCS TR -20 method, llH=SCS, Weighted -CN, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Type II 24 -hr 50 yr, 24 hr Rainfall=6.48"
Area (ac) CN Description
* 1.990
98
Impervious
1.880
74
Grass, good
* 0.000
70
Woods good
3.870
86
Weighted Average
Tc Length Slope Velocity Capacity Description
min feet ft/ft ft/sec cfs
5.0 Direct Entry,

WP_1 Type 1124 -hr 50 yr, 24 hr Rainfaff=6.48"
Prepared by HydroCAD SAMPLER 1-800-927-7246 www.hydrocad.net Printed 6f1412017
HydroCAD010.00-16 Sampler stn 501551 02015 HydroCAD Software Solutions LLC
This report was prepared with the free HydroCAD SAMPLER, which is licensed for evaluation and
educational use only. For actual design or modeling applications you must use a full version of HydroCAD
which may be purchased at www.hydrocad.net. Full programs also include complete documentation,
technicalsupport, training materials, and additional features which are essential for actual design work.
Routing by Stor-Ind method, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Starting Elev= 655.00' Surf.Area= 9,200 sf Storage= 27,045 cf
Peak Elev= 656.84' @ 12.03 hrs Surf.Area= 13,052 sf Storage= 48,654 cf (21,609 cf above start)
Plug -Flow detention time= 882.9 min calculated for 0.946 of (60% of inflow)
Center -of -Mass det. time= 442.0 min (1,232.8 - 790.9 )
Volume Invert
Avail.Stora a Storage Description
Summary for (Pond 4P. Wet Pond 3
Inflow Area =
3.870 ac,
Inflow Depth = 4.87"
for 50 yr, 24 hr event
Inflow -
31.98 cfs @
11.95 hrs, Volume=
1.570 of
Outflow -
20.78 cfs @
12.03 hrs, Volume-
1.567 af, Atten= 35%, Lag= 4.4 min
Primary -
20.78 cfs @
12.03 hrs, Volume=
1.567 of
Routing by Stor-Ind method, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Starting Elev= 655.00' Surf.Area= 9,200 sf Storage= 27,045 cf
Peak Elev= 656.84' @ 12.03 hrs Surf.Area= 13,052 sf Storage= 48,654 cf (21,609 cf above start)
Plug -Flow detention time= 882.9 min calculated for 0.946 of (60% of inflow)
Center -of -Mass det. time= 442.0 min (1,232.8 - 790.9 )
Volume Invert
Avail.Stora a Storage Description
#1 651.00'
96,939 cf Custom Stage Data (Prismatic) Listed below
Elevation Surf -Area
Inc.Store Cum.Store
(feet)
(sq -ft)
(cubic -feet) (cubic -feet)
651.00
3,490
0 0
652.00
5,900
4,695 4,695
654.00
7,900
13,800 18,495
655.00
9,200
8,550 27,045
656.00
11,800
10,500 37,545
658.00
14,798
26,598 64,143
660.00
17,998
32,796 96,939
Device Routing
Invert
Outlet Devices
#1 Primary
653.90'
24.0" Round Culvert
L= 30.0' RCP, square edge headwall, Ke= 0.500
Inlet/ Outlet Invert= 653.90' 1653.60' S=0.01007' Cc= 0.900
n=0.012, Flow Area= 3.14 sf
#2 Device 1
655.00'
1.5" Horiz. Orifice/Grate C= 0.600
#3 Device 1
656.00'
12.0' long Sharp -Crested Rectangular Weir 2 End Contraction(s)
Primary OutFlow Max=20.64 cfs @ 12.03 hrs HW=656.82' (Free Discharge)
L1=Culvert (Barrel Controls 20.64 cfs @ 6.57 fps)
�:2=Orifice/Grate (Passes < 0.08 cfs potential flow)
3=Sharp-Crested Rectangular Weir (Passes < 28,70 cfs potential flow)

Vliet Pond Calculations
Drainage Area =
CN =
Tc =
Impervious Area =
Rv =
WQv =
WQv =
Stage at Treatment Vol =
Permanent Pool Elev. _
Vpp =
App =
Dave =
Min SAIDA Ratio =
SA =
DA =
SAIDA Ratio Provided =
3.59 ac
86
0.08 hrs
1.8 ac
50 %
0.50
0.15 ac -ft
6532 ft3
641.6
641.0
23742 ft3
7384 ft2
3.22 ft
1.79
0.17 ac
3.59 ac
4.72
Project: BMP 2 Wet Pond
Date: 16 -,Jun -17
Post Development
Soils = Group C
CN = 98
CN = 74
CN µ 70
CN = 85
Water Quality Volume
Water Quality Volume
Main Pool Volume =
23742 ft3
Required Forebay Volume =
3561 ft3
Forebay Volume Provided =
5539 ft3 638 to 641
Orifice Sizing
Time to release WQv =
56 hrs
Release Rate =
0.032 cfs
Average Head =
0.3 ft
Orifice Area =
0.012 ft2
Orifice Diameter =
1.50 in
1.80 ac
1.79 ac
0 ac
0 ac
Imperv. Total
Grass, good
Woods, good
Gravel

WP -2 Detention
Results Summary
Pre GN =
70
Post GN =
86
Pre Drainage Area =
2.50 ac
Post Drainage Area =
3.59 ac
Pre To =
18.1 min
Post To =
5 min
2 yr 24 hr Storm
Max Stage =
642.57
Pre Dev Peak Flow =
2.06 cfs
Post Peak In -Flow =
11.60 cfs
Post Dev Routed Flow =
0.07 cfs
25 yr 24 hr Storm
Max Stage =
643.33
Pre Dev Peak Flow =
7.64 cfs
Post Peak In -Flow =
26.29 cfs
Post Dev Routed Flow =
2.58 cfs
50 yr 24 hr Storm
Max Stage = 643.56
Peak Routed Flow = 5.42 cfs
ok
03
ok

WP -2 Type 1124 -hr 2 -yr, 24 hr Rainfall=3.92"
Prepared by HydroCAD SAMPLER 1-800-927-7246 www.hydrocad.net Printed 619/2017
HydroCAD®10.00-16 Sampler stn 501551 „© 2015 HydroCAD Software Solutions „LLC
This report was prepared with the free HydroCAD SAMPLER, which is licensed for evaluation and
educational use only. For actual design or modeling applications you must use a full version of HydroCAD
which may be purchased at www.hydrocad.net. Full programs also include complete documentation,
technicalsupport, training materials, and additional features which are essential for actual design work.
Summary for Subcatchment 5S: PRE
Runoff - 2.06 cfs @ 12.12 hrs, Volume= 0.163 af, Depth= 0.78"
Runoff by SCS TR -20 method, UH=SCS, Weighted -CN, Time Span= 0.00-120.00 hrs, dt= 0.02 hrs
Type II 24 -hr 2 -yr, 24 hr Rainfall=3.12"
Area (ac) CN Description
0.000 74 Grass
2.500 70 Woods
0.000 85 Gravel, off-site
2.500 70 Weighted Average
Tc Length Slope Velocity Capacity Description
min feet(ft/ft) ftlsec) (cfs
14.5 100 0.0200 0.12 Sheet Flow,
Grass: Dense n= 0.240 P2= 3.12"
3.6 700 0.0400 3.22 Shallow Concentrated Flow,
Unpaved Kv= 16.1 fps
18.1 800 Total

WP -2 Type// 24 -hr 2 -yr, 24 hr Rainfall=3.92"
Prepared by HydroCAD SAMPLER 1-800-927-7246 www.hydrocad.net Printed 6/9/2017
HydroCAD®10.00-16 Sampler sin S01661 02016 HydroCAD Software Solutions LLC
This report was prepared with the free HydroCAD SAMPLER, which is licensed for evaluation and
educational use only. For actual design or modeling applications you must use a full version of HydroCAD
which may be purchased at www.hydrocad.net. Full programs also include complete documentation,
technicalsupport, training materials, and additional features which are essential for actual design work.
Summary for Subcatchment 3S: POST
Runoff - 11.60 cfs @ 11.96 hrs, Volume= 0.528 af, Depth= 1.77"
Runoff by SCS TR -20 method, UH=SCS, Weighted -CN, Time Span= 0.00-120.00 hrs, dt= 0.02 hrs
Type ll 24 -hr 2 -yr, 24 hr Rainfall=3.12"
Area (ac) CN Description
1.800
98
Impervious
1.790
74
Grass, good
" 0.000
70
Woods, good
0.000
85
Gravel, off-site
3.590
86
Weighted Average _..._..___ _,....,.._ _,,._.... �.._._
Tc Length
Slope Velocity Capacity Description
min feet)
lft (Wsec) (cls
5.0
Direct Entry,

WP -2 Type 1124 -hr 2 -yr, 24 hr Rainfall=3.32"
Prepared by HydroCAD SAMPLER 1-800-927-7246 www.hydrocad.net Printed 6/1612017
M droCAD®10.00-16 Sampler s/n S01551 02015 HydroCAD Software Solutions LLC
This report was prepared with the free HydroCAD SAMPLER, which is licensed for evaluation and
educational use only. For actual design or modeling applications you must use a full version of HydroCAD
which may be purchased at www,hydrocad.net. Full programs also include complete documentation,
technicalsupport, training materials, and additional features which are essential for actual design work.
Routing by Stor-Ind method, Time Span= 0.00-120.00 hrs, dt= 0.02 hrs
Peak Elev= 642.57' @ 24.06 hrs Surf.Area= 13,937 sf Storage= 19,764 cf
Plug -Flow detention time= 2,654.3 min calculated for 0.480 of (91% of inflow)
Center -of -Mass det. time= 2,607.3 min ( 3,426.9 - 819.6 )
Volume Invert Avail.Storage _ Storage Description
##1 641.00' 80,150 of Custom Stage Data (Prismatic) Listed below
Elevation SurF.Area Inc.Store Cum.Store
feet s -ft cubic -feet cubic -feet
641.00 9,900 0 0
642.00 12,800 11,350 11,350
644.00 16,800 29,600 40,950
646.00 22,400 39,200 80,150
Device Routing Invert Outlet Devices
#1 Primary 640.50' 18.0" Round Culvert
L= 42.0' RCP, square edge headwall, Ke= 0.500
Inlet/ Cutlet Invert= 640.50'/ 640,00' S= 0.0119 ,f Cc= 0.900
n= 0.012, Flow Area= 1.77 sf
#2 Device 1 641.00' 1.5" Horiz. Orifice/Grate C= 0.600
#3 Device 1 643.00' 4.0' long Sharp -Crested Rectangular Weir 2 End Contraction(s)
Primary OutFlow Max=0.07 cfs @ 24.06 hrs HW=642.57' (Free Discharge)
't-1 =Culvert (Passes 0.07 cfs of 9.77 cfs potential flow)
L2=OrificelGrate (Orifice Controls 0.07 cfs @ 6.03 fps)
3=Sharp-Crested
Rectangular Weir ( Controls 0.00 cfs)
Summary for Pond 4P: Wet Pond 3
Inflow Area =
3.590 ac,
Inflow Depth = 1.77"
for 2 -yr, 24 hr event
Inflow =
11.60 cfs @
11.96 hrs, Volume=
0.528 of
Outflow -
0.07 cfs @
24.06 hrs, Volume=
0.480 af, Atten= 99%, Lag= 725.7 min
Primary -
0.07 cfs @
24.06 hrs, Volume=
0.480 of
Routing by Stor-Ind method, Time Span= 0.00-120.00 hrs, dt= 0.02 hrs
Peak Elev= 642.57' @ 24.06 hrs Surf.Area= 13,937 sf Storage= 19,764 cf
Plug -Flow detention time= 2,654.3 min calculated for 0.480 of (91% of inflow)
Center -of -Mass det. time= 2,607.3 min ( 3,426.9 - 819.6 )
Volume Invert Avail.Storage _ Storage Description
##1 641.00' 80,150 of Custom Stage Data (Prismatic) Listed below
Elevation SurF.Area Inc.Store Cum.Store
feet s -ft cubic -feet cubic -feet
641.00 9,900 0 0
642.00 12,800 11,350 11,350
644.00 16,800 29,600 40,950
646.00 22,400 39,200 80,150
Device Routing Invert Outlet Devices
#1 Primary 640.50' 18.0" Round Culvert
L= 42.0' RCP, square edge headwall, Ke= 0.500
Inlet/ Cutlet Invert= 640.50'/ 640,00' S= 0.0119 ,f Cc= 0.900
n= 0.012, Flow Area= 1.77 sf
#2 Device 1 641.00' 1.5" Horiz. Orifice/Grate C= 0.600
#3 Device 1 643.00' 4.0' long Sharp -Crested Rectangular Weir 2 End Contraction(s)
Primary OutFlow Max=0.07 cfs @ 24.06 hrs HW=642.57' (Free Discharge)
't-1 =Culvert (Passes 0.07 cfs of 9.77 cfs potential flow)
L2=OrificelGrate (Orifice Controls 0.07 cfs @ 6.03 fps)
3=Sharp-Crested
Rectangular Weir ( Controls 0.00 cfs)

WP -2 Type Ti 24 -hr 25 yr, 24 hr Rainf611=5.76"
Prepared by HydroCAD SAMPLER 1-800-927-7246 www.hydrocad.net Printed 6!9!2017
HydroCAD010.00-16 Sampler s/n SO1551 02015 HydroCAD Software Solutions LLC
This report was prepared with the free HydroCAD SAMPLER, which is licensed for evaluation and
educational use only. For actual design or modeling applications you must use a full version of HydroCAD
which may be purchased at www.hydrocad.net. Full programs also include complete documentation,
technicalsupport, training materials, and additional features which are essential for actual design work.
Summary for Subcatchment 5S: PRE
Runoff = 7.64 cfs @ 12.11 hrs, Volume= 0.545 af, Depth= 2.62°
Runoff by SCS TR -20 method, UH=SCS, Weighted -CIV, Time Span= 0.00-120.00 hrs, dt= 0.02 hrs
Type It 24 -hr 25 -yr, 24 hr Rainfall=5.76"
Area (ac) CN Description
* 0.000 74 Grass
* 2.500 70 Woods
* 0.000 85 Gravel, off-site
2.500 70 Weighted Average
Te Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ftlsec) (cfs)
14.5 100 0.0200 0.12 Sheet Flow,
Grass: Dense n= 0.240 P2= 3.12"
3.6 700 0.0400 3.22 Shallow Concentrated Flow,
Unpaved Kv= 16.1 fos
iE:lfil�:Ii►I�il

WP -2 Type i! 24 -hr 25 -yr, 24 hr Rainfafi=5.76"
Prepared by HydroCAD SAMPLER 1-800-927-7246 www.hydrocad.net Printed 6/9/2017
HydroCADO 10.00-16 Sampler s/n 501551 © 2015 HydroCAD Software Solutions LLC -
This report was prepared with the free HydroCAD SAMPLER, which is licensed for evaluation and
educational use only. For actual design or modeling applications you must use a full version of HydroCAD
which may be purchased at www.hydrocad.net. Full programs also include complete documentation,
technicalsupport, training materials, and additional features which are essential for actual design work.
Summary for Subcatchment 3S: POST
Runoff - 26.29 cfs @ 11.96 hrs, Volume= 1.251 af, Depth= 4.18"
Runoff by SCS TR -20 method, UH=SCS, Weighted -CN, Time Span= 0.00-120.00 hrs, dt= 0.02 hrs
Type Il 24 -hr 25 -yr, 24 hr Rainfall=5.76"
Area (ac) CN Descriction
1.800
98
Impervious
1.790
74
Grass, good
0.000
70
Woods, good
0.000
85
Gravel off-site
3.590
86
Weighted Average
Tc Length
Slope Velocity Capacity Description
mini (feet
_(ft/ft) (ft/sec) (cfs)
5.0
Direct Entry,

WP -2 Type// 24 -hr 25 -yr, 24 hr Rainfal1=5.76"
Prepared by HydroCAD SAMPLER 1-800-927-7246 www.hydrocad.net Printed 6116/2017
ydroCAD®10.00-16 Sampler sin S01551 O 2015 HydroCAD Software Solutions LLC
This report was prepared with the free HydroCAD SAMPLER, which is licensed for evaluation and
educational use only. For actual design or modeling applications you must use a full version of HydroCAD
which may be purchased at www.hydrocad.net. Full programs also include complete documentation,
technicalsupport, training materials, and additional features which are essential for actual design work.
Routing by Stor-Ind method, Time Span= 0.00-120.00 hrs, dt= 0.02 hrs
Peak Elev= 643-33'@ 12.36 hrs Surf.Area= 15,469 sf Storage= 31,102 cf
Plug -Flow detention time= 1,516.7 min calculated for 1.139 of (91% of inflow)
Center -of -Mass det. time= 1,470.7 min ( 2,265.8 - 795.1 )
Volume -_ Invert
Avail.Storage Storage Description ,.,..
Summary for Pond 4P: Wet Pond 3
Inflow Area =
3.590 ac,
Inflow Depth = 4.18"
for 25 -yr, 24 hr event
Inflow -
26.29 cfs @
11.96 hrs, Volume=
1.251 of
Outflow -
2.58 cfs @
12.36 hrs, Volume=
1.139 af, Atten= 90%, Lag= 24.2 min
Primary -
2.58 cfs @
12.36 hrs, Volume-
1.139 of
Routing by Stor-Ind method, Time Span= 0.00-120.00 hrs, dt= 0.02 hrs
Peak Elev= 643-33'@ 12.36 hrs Surf.Area= 15,469 sf Storage= 31,102 cf
Plug -Flow detention time= 1,516.7 min calculated for 1.139 of (91% of inflow)
Center -of -Mass det. time= 1,470.7 min ( 2,265.8 - 795.1 )
Volume -_ Invert
Avail.Storage Storage Description ,.,..
#1 641.00 `
80,150 cf Custom Stage Data (Prismatic). Listed below
Li t
Elevation Surf.Area
Inc.Store Cum.Store
(feet)
(sq -ft)
(cubic -feet) (cubic -feet)
641.00
9,900
0 0
642.00
12,800
11,350 11,350
644.00
16,800
29,600 40,950
646.00
22,400
39,200 80,150
Device Routing
Invert
Outlet Devices
#1 Primary
640.50'
18.0" Round Culvert
L= 42.0' RCP, square edge headwall, Ike= 0.500
Inlet/ Outlet Invert= 640.50'1640.00' S= 0.0119'f Cc= 0.900
n= 0.012, Flow Area= 1.77 sf
#2 Device 1
641.00'
1.6" Horiz. Orifice/Grate C= 0.600
#3 Device 1
643.00'
4.0` long Sharp -Crested Rectangular Weir 2 End Contraction(s)
Primary OutFlow Max=2.58 cfs @ 12.36 hrs HW=643.33' (Free Discharge)
t--1 =Culvert (Passes 2.58 cfs of 12.29 cfs potential flow)
�2=OrificelGrate (Orifice Controls 0.09 cfs @ 7.36 fps)
3=Sharp-Crested Rectangular Weir (Weir Controls 2.49 cfs @ 1.89 fps)

WP -2 Fyne lI 24 -hr 50 yr, 24 hr Rainfall=6.48"
Prepared by HydroCAD SAMPLER 1-800-927-7246 www.hydrocad.net Printed 6/9/2017
HydroCAD®10.00-16 Sampler sin S01551 O 2015 HydroCAD Software Solutions LLC
This report was prepared with the free HydroCAD SAMPLER, which is licensed for evaluation and
educational use only. For actual design or modeling applications you must use a full version of HydroCAD
which may be purchased at www_hydrocad.net. Full programs also include complete documentation,
technicaisupport, training materials, and additional features which are essential for actual design work_
Summary for Subcatchment 3S: POST
Runoff = 30.30 cfs @ 11.96 hrs, Volume= 1.456 af, Depth= 4.87"
Runoff by SCS TR -20 method, UH=SCS, Weighted -CN, Time Span= 0A0-920.00 hrs, dt= 0.02 hrs
Type Il 24 -hr 50 yr, 24 hr Rainfall=6.48"
Area (ac) CN Description
* 1.800
98
Impervious
* 1.790
74
Grass, good
* 0.000
70
Woods, good
* 0.000
85
Gravel, off-site
3.590
86
Weighted Average
Tc Length
Slope Velocity Capacity Description
min feet)
(fUft) (ftlsec cfs
5.0
Direct Entry,

WP -2 Type 1124 -hr 50 yr, 24 hr Rainfall= 6.4 8 "
Prepared by HydroCAD SAMPLER 1-800-927-7246 www.hydrocad.net Printed 6/1612017
H droCADO 10.00-16 Sampler sln 501551 O 2015 HydroCAD Software Solutions LILAC
This report was prepared with the free HydroCAD SAMPLER, which is licensed for evaluation and
educational use only. For actual design or modeling applications you must use a full version of HydroCAD
which may be purchased at www.hydrocad.net. Full programs also include complete documentation,
technicalsupport, training materials, and additional features which are essential for actual design work.
Routing by Stor-Ind method, Time Span= 0.00-120.00 hrs, dt= 0.02 hrs
Peak Elev= 643,56'@ 12.12 hrs Surf.Area= 15,920 sf Storage= 34,435 cf
Plug -Flow detention time= 1,297.6 min calculated for 1.344 of (92% of inflow)
Center -of -Mass det. time= 1,255.9 min ( 2,046.7 - 790.9 )
Volume Invert
Avail.Storage Storage Description
Summary for Pond 4P. Wet Pond 3
Inflow Area =
3.590 ac,
Inflow Depth = 4.87"
for 50 yr, 24 hr event
Inflow -
30.30 cfs @
11.96 hrs, Volume=
1.456 of
Outflow =
5.42 cfs @
12.12 hrs, Volume=
1.344 af, Atten= 82%, Lag= 9.7 min
Primary -
5.42 cfs @
12.12 hrs, Volume=
1.344 of
Routing by Stor-Ind method, Time Span= 0.00-120.00 hrs, dt= 0.02 hrs
Peak Elev= 643,56'@ 12.12 hrs Surf.Area= 15,920 sf Storage= 34,435 cf
Plug -Flow detention time= 1,297.6 min calculated for 1.344 of (92% of inflow)
Center -of -Mass det. time= 1,255.9 min ( 2,046.7 - 790.9 )
Volume Invert
Avail.Storage Storage Description
#1 641.00'
_
80,150 cf Custom Stage Data (Prismatic) Listed below
Elevation Surf.Area
Inc.Store Cum.Store
Leet)
(aft)
cubic -feet cubic -feet
641.00
9,900
0 0
642.00
12,800
11,350 11,350
644.00
16,800
29,600 40,950
646.00
22,400
39,200 80,150
Device Routing
Invert
Outlet Devices
#1 Primary
640.50'
_
18.0" Round Culvert
L= 42.0' RCP, square edge headwall, Ke= 0.500
Inlet/ Outlet Invert= 640.50'/ 640.00' S=0.01197 Cc= 0.900
n= 0.012, Flow Area= 1.77 sf
#2 Device 1
641.00'
1.5" Horiz. Orifice/Grate C= 0.600
#3 Device 1
643.00'
4.0" long Sharp -Crested Rectangular Weir 2 End Contraction(s)
Primary OutFlow Max=5.42 cfs @ 12.12 hrs HW=643.56' (Free Discharge)
t --=Culvert (Passes 5.42 cfs of 12.93 cfs potential flow)
r2=Orifice/Grate (Orifice Controls 0.09 cfs @ 7.70 fps)
3=Sharp-Crested Rectangular Weir (Weir Controls 5.32 cfs @ 2.45 fps)

Wet Pond Calculations
Drainage Area =
CN =
Tc
Impervious Area =
Rv =
WQv =
WQv =
Stage at Treatment Vol =
Permanent Pool Elev.
Vpp =
App =
Dave =
Min SAIDA Ratio =
SA =
DA =
SAIDA Ratio Provided =
Main Pool Volume =
Required Forebay Volume =
Forebay Volume Provided =
Orifice Sizing
Time to release WQv
Release Rate =
Average Head =
Orifice Area =
Orifice Diameter =
13.06 ac
86
0.08 hrs
6.4 ac
49%
0.49
0.53 ac -ft
23279 ft3
640.6
640.0
80304 ft3
25428 ft2
3.16 ft
1.79
0,58 ac
13.06 ac
4.47
80304 ft3
12046 ft3
18700 ft3
50 hrs
0.129 cfs
0.3 ft
0.049 ft2
3.00 in
Project: BMP 3 Wet Pond
Date: 14 -,tun -17
Post Development
Soils= Group C
CN = 98
CN = 74
CN = 70
CN = 85
Water Quality Volume
Water Quality Volume
638 TO 640
6.4 ac
6.66 ac
0 ac
0 ac
Imperv. Total
Lawn, good
Woods, good
Gravel

WP -3 Detention
Results Summary
Pre CN =
72
Post CN =
86
Pre Drainage Area =
8.68 ac
Post Drainage Area =
13.06 ac
Pre Tc =
15.3 min
Post Tc =
5 min
2 yr 24 hr Storm
Max Stage =
641.26
Pre Dev Peak Flow =
9.16 cfs
Post Peak In -Flow =
4220 cfs
Post Dev Routed Flow =
1.90 cfs
25 yr 24 hr Storm
Max Stage =
642.45
Pre Dev Peak Flow =
31.13 cfs
Post Peak In -Flow =
95.63 cfs
Post Dev Routed Flow =
17.16 cfs
60 yr 24 hr Storm
Max Stage = 642.75
Peak Routed Flow = 2724 cfs
ok
ok
0+

WP -3 Type 11 24 -hr 2 -yr, 24 hr Rainfall=3.92"
Prepared by HydroCAD SAMPLER 1-800-927-7246 www.hydrocad.net Printed 6/14/2017
HydroCAD® 10.00-16 Sampler s/n S01551 @2015 HydroCAD Software Solutions LLC____
This report was prepared with the free HydroCAD SAMPLER, which is licensed for evaluation and
educational use only. For actual design or modeling applications you must use a full version of HydroCAD
which may be purchased at www.hydrocad.net. Full programs also include complete documentation,
technicalsupport, training materials, and additional features which are essential for actual design work.
Summary for Subcatchment SS: PRE
Runoff - 9.16 cfs @ 12.09 hrs, Volume= 0.637 af, Depth= 0.88"
Runoff by SCS TR -20 method, UH=SCS, Weighted -CN, Time Span= 0.00-120.00 hrs, dt= 0.02 hrs
Type 11 24 -hr 2 -yr, 24 hr Rainfall=3.12"
Area (ac) CN Description
* 3.500 74 Grass
* 5.180 70 Woods
8.680 72 Weighted Average
Tc Length Slope Velocity Capacity Description
min feet ft/ft ftlsec cfs
12.3 100 0.0300 0.14 Sheet Flow,
Grass: Dense n= 0.240 P2= 3.12"
3.0 460 0.0260 2.60 Shallow Concentrated Flow,
Unpaved Kv= 16.1 fps
15.3 560 Total

WP -3 Type 1124 -hr 2 -yr, 24 hr Rainfall= 3.12"
Prepared by HydroCAD SAMPLER 1-800-927-7246 www.hydrocad.net Printed 6/1412017
W droCA[M 10.00-16 Sampler s/n S01551 © 2015 HydroCAD Software Solutions LLC
This report was prepared with the free HydroCAD SAMPLER, which is licensed for evaluation and
educational use only. For actual design or modeling applications you must use a full version of HydroCAD
which may be purchased at www.hydrocad.net, Full programs also include complete documentation,
technicalsupport, training materials, and additional features which are essential for actual design work.
Summary for Subcatchment 3S: POST
Runoff = 42.20 cfs @ 11.96 hrs, Volume= 1.922 af, Depth= 1.77'
Runoff by SCS TR -20 method, UH=SCS, Weighted -CN, Time Span= 0.00-120.00 hrs, dt= 0.02 hrs
Type II 24 -hr 2 -yr, 24 hr Rainfall=3.12°
Area (ac) CN Description
6.400 98 Impervious
6.660 74 Grass, good
0.000 70 Woodsgood___
13.060 86 Weighted Average
Tc Length Slope Velocity Capacity Description
min feet ftlftft/sec cfs
5.0 Direct Entry,

WP -3 Type /124 -hr 2 -yr, 24 hr Rainfall=3.92"
Prepared by HydroCAD SAMPLER 1-800-927-7246 www.hydrocad.net Printed 6/14/2017
HydroCAD® 10.00-16 Sampler s/n 501551 4 2015 HydroCAD Software Solutions LLC
This report was prepared with the free HydroCAD SAMPLER, which is licensed for evaluation and
educational use only. For actual design or modeling applications you must use a full version of HydroCAD
which may be purchased at www.hydrocad.net. Full programs also include complete documentation,
technicalsupport, training materials, and additional features which are essential for actual design work.
Summary for Pond 4P: Wet Pond 3
Inflow Area = 13.060 ac, Inflow Depth = 1.77" for 2 -yr, 24 hr event
Inflow -
42.20 cfs @
11.96 hrs,
Volume=
1.922 of
Outflow =
1.90 cfs @
13.22 hrs,
Volume=
1.893 af, Atten= 96%, Lag= 75.5 min
Primary -
1.90 cfs @
13.22 hrs,
Volume=
1.893 of
Secondary =
0.00 cfs @
0.00 hrs,
Volume=
0.000 of
Routing by Stor-Ind method, Time Span= 0.00-120.00 hrs, dt= 0.02 hrs
Starting Elev= 640,00' Surf.Area= 36,200 sf Storage= 104,875 cf
Peak Elev= 641.25' @ 13.22 hrs Surf.Area= 40,640 sf Storage= 154,596 cf (49,721 cf above start)
Plug -Flow detention time= (not calculated: initial storage exceeds outflow)
Center -of -Mass det. time= 1,288.3 min ( 2,107.9 - 819.6 )
Volume Invert Avail.Stora a Storage Descri tion
#1 636.50' 279,475 cf Custom Stage Data (Prismatic) Listed below
Elevation Surf.Area Inc.Store Cum.Store
(feet) (sq -ft) (cubic -feet) (cubic -feet)
636.50 20,400 0 0
638.00 30,500 38,175 38,175
640.00 36,200 66,700 104,875
642.00 43,300 79,500 184,375
644.00 51,800 95,100 279,475
Device Routing Invert Outlet Devices
#1 Primary 640.00' 24.0°' Round Culvert
L= 25.0' RCP, square edge headwall, Ke= 0.500
Inlet /Outlet Invert= 640.00'/639.75' S= 0.0100 'r Cc= 0.900
n= 0.012, Flow Area= 3.14 sf
#2 Device 1 540.00' 3.0" Horiz. Orifice/Grate C= 0.600
#3 Device 1 641.00' 4.0' long Sharp -Crested Rectangular Weir 2 End Contraction(s)
#4 Secondary 642.50' 20.0' long Sharp -Crested Rectangular Weir 2 End Contraction(s)
Primary Outflow Max=1.89 cfs @ 13.22 hrs HW=641.25' (Free Discharge)
t--1=Culvert (Passes 1.89 cfs of 6.53 cfs potential flow)
1:2=Orifice/Grate (Orifice Controls 0.26 cfs @ 5.39 fps)
3=Sharp-Crested Rectangular Weir (Weir Controls 1.62 cfs @ 1.64 fps)
Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=640.00' (Free Discharge)
t- A=Sharp-Crested Rectangular Weir ( Controls 0.00 cfs)

WP -3 Type 1124 -hr 25 -yr, 24 hr Rainfall=5.76"
Prepared by HydroCAD SAMPLER 1-800-927-7246 www.hydrocad.net Printed 6114/2017
H droCAD®10.00-16 Sampler stn 501551 02015 HydroCAD Software Solutions LLC
This report was prepared with the free HydroCAD SAMPLER, which is licensed for evaluation and
educational use only. For actual design or modeling applications you must use a full version of HydroCAD
which may be purchased at www.hydrocad.net. l=ull programs also include complete documentation,
technicalsupport, training materials, and additional features which are essential for actual design work.
Summary for Subcatchment 5S: PRE
Runoff - 31.13 cfs @ 12.08 hrs, Volume= 2.024 af, Depth= 2.80"
Runoff by SCS TR -20 method, UH=SCS, Weighted -CN, Time Span= 0.00-120.00 hrs, dt= 0.02 hrs
Type II 24 -hr 25 -yr, 24 hr Rainfall=5.76"
Area (ac) CN Description
3.500 74 Grass
5.180 70 Woods
8.680 72 Weighted Average
Te Length Slope Velocity Capacity Description
(min) (feet)-- (ft/ft) (ft/sec) cfs
12.3 100 0.0300 0.14 _ Sheet Flow,
Grass: Dense n= 0.240 P2= 3.12"
3.0 460 0.0260 2.60 Shallow Concentrated Flow,
Unpaved Kv= 16.1 fns
15.3 560 Total

WP -3 Type 1124 -hr 25 -yr, 24 hr Rainfall=5.76"
Prepared by HydroCAD SAMPLER 1-800-927-7246 www.hydrocad.net Printed 6/1412017
H droCAD010.00-16 Sampler sln 501551 @2015 HydroCAD Software Solutions LLC
This report was prepared with the free HydroCAD SAMPLER, which is licensed for evaluation and
educational use only_ For actual design or modeling applications you must use a full version of HydroCAD
which may be purchased at www.hydrocad.net. Full programs also include complete documentation,
technicalsupport, training materials, and additional features which are essential for actual design work.
Summary for Subcatchment 3S: POST
Runoff = 95.63 cfs @ 11.96 hrs, Volume= 4.551 af, Depth= 4.18"
Runoff by SCS TR -20 method, UH=SCS, Weighted -CN, Time Span= 0.00-120.00 hrs, dt= 0.02 hrs
Type II 24 -hr 25 -yr, 24 hr Rainfall= 5.76"
Area (ac) CN Description
6.400 98 Impervious - -
6.660 74 Grass, good
0.000 70 Woods. good
13.060 86 Weighted Average
Tc Length Slope Velocity Capacity Description
5.0
Direct Entry,

WP -3 Type 1124 -hr 25 -yr, 24 hr Ralnfali=5.76"
Prepared by HydroCAD SAMPLER 1-800-927-7246 www.hydrocad.net Printed 6/14/2017
HydroCAD@) 10.00-16 Sampler s1n 501551 0 2015 HydroCAD Software Solutions LLC
This report was prepared with the free HydroCAD SAMPLER, which is licensed for evaluation and
educational use only. For actual design or modeling applications you must use a full version of HydroCAD
which may be purchased at www.hydrocad.net. Full programs also include complete documentation,
technicalsupport, training materials, and additional features which are essential for actual design work.
Summary for Pond 4P; Wet Pond 3
Inflow Area = 13.060 ac, Inflow Depth = 4.18" for 25 -yr, 24 hr event
Inflow -
95.63 cfs @
11.96 hrs,
Volume=
4.551 of
Outflow =
17.16 cfs @
12.12 hrs,
Volume=
4.521 af, Atten= 82%, Lag= 9.7 min
Primary -
17.16 cfs @
12.12 hrs,
Volume=
4.521 of
Secondary =
0.00 cfs @
0.00 hrs,
Volume=
0.000 of
Routing by Stor-Ind method, Time Span= 0.00-120.00 hrs, dt= 0.02 hrs
Starting Elev= 640.00' Surf.Area= 36,200 sf Storage= 104,875 cf
Peale Elev= 642.45' @ 12.12 hrs Surf. Area= 45,192 sf Storage= 205,549 of (100,674 cf above start)
Plug -Flow detention time= 1,420.3 min calculated for 2.114 of (46% of inflow)
Center -of -Mass det. time= 600.0 min ( 1,395.2 - 795.1 )
Volume Invert Avail -Storage Storage Descri tion
#1 636.50' 279,475 of Custom Stage Data (Prismatic) Listed below
Elevation Surf.Area Inc.Store Cum.Store
feet s -ft cubic -feet cubic -feet
636.50 20,400 0 0
638.00 30,500 38,175 38,175
640.00 36,200 66,700 104,875
642.00 43,300 79,500 184,375
644.00 51,800 95,100 279,475
Device Roubin Invert Outlet Devices
#1 Primary 640.00' 24.0" Round Culvert
L= 25.0' RCP, square edge headwall, Ke= 0.500
Inlet /Outlet Invert= 640.00'1639,75' S=0,0100'1' Cc= 0.900
n= 0.012, Flow Area= 3.14 sf
#2 Device 1 640.00' 3.0" Horiz. Orifice/Grate C= 0.600
#3 Device 1 641.00' 4.0' long Sharp -Crested Rectangular Weir 2 End Contraction(s)
#4 Secondary 642.50' 20.0' long Sharp -Crested Rectangular Weir 2 End Contraction(s)
Primary OutFlow Max=17.17 cfs @ 12.12 hrs HW=642.45' (Free Discharge)
L-1=Culvert (Barrel Controls 17.17 cfs @ 5.69 fps)
1:2=Orifice/Grate (Passes < 0.37 cfs potential flow)
3=Sharp-Crested Rectangular Weir (Passes < 21.08 cfs potential flow)
econdary OutFlow Max=0.00 cfs @ 0.00 hrs HW=640.00' (Free Discharge)
Sharp -Crested Rectangular Weir ( Controls 0.00 cfs)

WP -3 Type /124 -hr 50 yr, 24 hr Rainfall= 6.48 "
Prepared by HydroCAD SAMPLER 1-800-927-7246 www.hydrocad.net Printed 6/14/2017
H droCAD0 10.00-16 Sampler s/n S01551 02016 HydroCAD Software Solutions LLC
This report was prepared with the free HydroCAD SAMPLER, which is licensed for evaluation and
educational use only. For actual design or modeling applications you must use a full version of HydroCAD
which may be purchased at www,hydrocad.net. Full programs also include complete documentation,
techn ica [support, training materials, and additional features which are essential for actual design work.
Summary for Subcatchment 3S; POST
Runoff = 110.22 cfs @ 11.96 hrs, Volume= 5.297 af, Depth= 4.87'
Runoff by SCS TR -20 method, UH=SCS, Weighted -CN, Time Span= 0.00-120.00 hrs, dt= 0.02 hrs
Type it 24 -hr 50 yr, 24 hr Rainfall=6.48"
Area (ac? CN Description
6.400 98 Impervious
6.660 74 Grass, good
0.000 70 Woods,,good
13.060 86 Weighted Average
Te Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
5.0 Direct Entry, _ -- --

WP -3 Type I! 24 -hr 50 yr, 24 hr Rainfall= 6.48 "
Prepared by HydroCAD SAMPLER 1-800-927-7246 www.hydrocad.net Printed 6/14/2017
H droCAD® 10.00-16 Sampler sln S01551 02015 HydroCAD Software Solutions LLC
This report was prepared with the free HydroCAD SAMPLER, which is licensed for evaluation and
educational use only. For actual design or modeling applications you must use a full version of HydroCAD
which may be purchased at www.hydrocad.net. Full programs also include complete documentation,
technicalsupport, training materials, and additional features which are essential for actual design work.
Summary for Pond 4P: Wet Pond 3
Inflow Area = 13.060 ac, Inflow Depth = 4.87" for 50 yr, 24 hr event
Inflow -
110.22 cfs @
11.96 hrs,
Volume=
5.297 of
Outflow =
27.24 cfs @
12.09 hrs,
Volume=
5.267 af, Atten= 75%, Lag= 7,8 min
Primary -
18.98 cfs @
12.09 hrs,
Volume=
5.114 of
Secondary =
8.26 cfs @
12.09 hrs,
Volume=
0.153 of
Routing by Stor-Ind method, Time Span= 0.00-120.00 hrs, dt= 0.02 hrs
Starting Elev= 640.00' Surf.Area= 36,200 sf Storage= 104,875 cf
Peak Elev= 642.75' @ 12.09 hrs Surf.Area= 46,491 sf Storage= 220,082 cf (115,207 cf above start)
Plug -Flow detention time= 1,112.4 min calculated for 2.859 of (54% of inflow)
Center -of -Mass det. time= 528.2 min ( 1,319.0 - 790.9)
Volume Invert Avail.Stora a Storage Description
#1 636.50' 279,475 cf Custom Stage Data (Prismatic) Listed below
Elevation Surf.Area Inc.Store Cum.Store
feet (sq -ft) cubic -feet cubic -feet
636.50 20,400 0 0
638.00 30,500 38,175 38,175
640.00 36,200 66,700 104,875
642.00 43,300 79,500 184,375
644.00 51,800 95,100 279,475
Device Routing Invert Outlet Devices
#1 Primary 640.00' 24.0" Round Culvert
L= 25.0' RCP, square edge headwall, Ke= 0.500
Inlet/ Outlet Invert= 640.00'/639.75' S= 0.0100'1' Cc= 0.900
n= 0.012, Flow Area= 3.14 sf
#2 Device 1 640.00' 3.0" Horiz. Orifice/Grate C= 0.600
#3 Device 1 641.00' 4.0' long Sharp -Crested Rectangular Weir 2 End Contraction(s)
#4 Secondary 642.50' 20.0' long Sharp -Crested Rectangular Weir 2 End Contraction(s)
Primary Outflow Max=18.97 cfs @ 12.09 hrs HW=642.75' (Free Discharge)
t--1=Culvert (Barrel Controls 18.97 cfs @ 6.04 fps)
1:3=Sharp-Crested
2=OrificelGrate (Passes < 0.39 cfs potential flow)
Rectangular Weir (Passes a 27.61 cfs potential flow)
Secondary OutFlow Max=8.12 cfs @ 12.09 hrs HW=642.75' (Free Discharge)
=Sharp -Crested Rectangular Weir (Weir Controls 8.12 cfs @ 1.63 fps)

Wet Pond Calculations
Drainage Area =
CN =
Tc =
Impervious Area
Rv =
WQv
WQv =
Stage at Treatment Vol =
Permanent Pool Elev. =
Vpp
App =
Dave =
Min SAIDA Ratio =
SA =
DA =
SAIDA Ratio Provided =
Main Pool Volume =
Required I`orebay Volume =
Forebay Volume Provided =
Orifice Sizing
Time to release WQv
Release Rate =
Average Head =
Orifice Area =
Orifice [diameter =
10.55 ac
84
0.08 hrs
4.5 ac
43 %
0.43
0.38 ac -ft
16616 ft3
633.2
632.0
26314 ft3
8239 ft2
3.19 ft
1.79
0.19 ac
10.55 ac
1.79
26314 ft3
3947 ft3
4762 ft3
57 hrs
0.081 cfs
0.6 ft
0.022 ft2
2.00 in
Project: BMP 4 Wet Pond
Date: 8 -Jun -17
Post Development
Soils = Group C
CN = 98
CTE = 74
CN = 70
CN T 85
Water Quality Volume
Water Quality Volume
629 to 632
4.5 ac
6.05 ac
0 ac
0 ac
Imperv. Total
Grass, good
Woods, good
Gravel

WP -4 Detention
Results Summary
Pre CN=
71
Post CN =
84
Pre Drainage Area =
10.32 ac
Post Drainage Area =
10.55 ac
Pre Tc =
16.2 rain
Post Tc =
5 min
2 yr 24 hr Storm
Max Stage =
634.06
Pre Dev Peak Flow =
9.80 cfs
Post Peak In -Flow =
31.43 cfs
Post Dev Routed Flow =
4.10 cfs
25 yr 24 hr Storm
Max Stage =
635.63
Pre Dev Peak Flow =
34.73 cfs
Post Peak 1n -Flow =
74.32 cfs
Post Dev Routed Flow =
3420 cfs
50 yr 24 hr Storm
Max Stage = 635.92
Peak Routed Flow = 52.15 cfs
ok
ok

WP -4 Type 1124 -hr 2 -yr, 24 hr Ralnfaff=3.12"
Prepared by HydroGAD SAMPLER 1-800-927-7246 www.hydrocad.net Printed 61912017
H droCADO 10.00-16 Sampler s/n S01551 © 2015 H droCAD Software Solutions LLC
This report was prepared with the free HydroGAD SAMPLER, which is licensed for evaluation and
educational use only. For actual design or modeling applications you must use a full version of HydroGAD
which may be purchased at www.hydrocad_net. Full programs also include complete documentation,
technicalsupport, training materials, and additional features which are essential for actual design work.
Summary for Subcatchment 6S: PRE
Runoff - 9.80 cfs @ 12.10 hrs, Volume= 0.714 af, Depth= 0.83"
Runoff by SCS TR -20 method, UH= SCS, Weighted -CIV, Time Span= 0.00-120.00 hrs, dt= 0.02 hrs
Type II 24 -hr 2 -yr, 24 hr Rainfall=3.12"
Area (ac) CN Description
` 2.890 74 Grass
7.430 70 Woods
' 0.000 85 Gravel
0.000 98 Impervious
10.320 71 Weighted Average
Tc Length Slope Velocity Capacity Description
(min) (feet) (M) (fUsec) (cfs)
12.3 100 0.0300 0.14 Sheet Flow,
Grass: Dense n= 0.240 P2= 3.12"
3.9 660 0.0300 2.79 Shallow Concentrated Flow,
Unpaved Kv= 16.1 fns
16.2 760 Total

WP -4 Type l! 24 -hr 2 -yr, 24 hr Rainfall=3.12"
Prepared by HydroCAD SAMPLER 1-800-927-7246 www.hydrocad.net Printed 61912017
H droCAD®10.00-16 Sampler s/n S01551 0 2015 HydroCAD Software Solutions LLC
This report was prepared with the free HydroCAD SAMPLER, which is licensed for evaluation and
educational use only. For actual design or modeling applications you must use a full version of HydroCAD
which may be purchased at www.hydrocad.net. Full programs also include complete documentation,
technicalsupport, training materials, and additional features which are essential for actual design work.
Summary for Subcatchment 3S: POST
Runoff - 31.43 cfs @ 11.96 hrs, Volume= 1.420 af, Depth= 1.62"
Runoff by SCS TR -20 method, UH -SCS, Weighted -CN, Time Span= 0.00-120.00 hrs, dt= 0.02 hrs
Type II 24 -hr 2 -yr, 24 hr Rainfall=3.12"
Area (ac) CN Description
* 4.500
98
Impervious
' 6.050
74
Grass, good
* 0.000
70
Woods, good
* 0.000
85
Gravel
10.550
84
Weighted Average
Tc Length
Slope Velocity Capacity Description
min feet
ft/ft ft/sec cfs
5.0
Direct Entry,

WP -4 Type 1124 -hr 2 -yr, 24 hr Rainfall=3.12"
Prepared by HydroCAD SAMPLER 1.800-927-7246 www.hydrocad.net Printed 6/9/2017
HydroCAD® 10.00-16 Sampler s/n S01551 02015 HydroCAD Software Solutions LLC
This report was prepared with the free HydroCAD SAMPLER, which is licensed for evaluation and
educational use only. For actual design or modeling applications you must use a full version of HydroCAD
which may be purchased at www.hydrocad.net. Full programs also include complete documentation,
tech nicalsu pport, training materials, and additional features which are essential for actual design work.
Summary for Pond 4P: Wet Pond 3
Inflow Area = 10.550 ac, Inflow Depth = 1.62" for 2 -yr, 24 hr event
Inflow =
31.43 cfs @
11.96 hrs,
Volume=
1.420 of
Outflow -
4.10 cfs @
12.22 hrs,
Volume=
1.418 af, Atten= 87%, Lag= 15.7 min
Primary -
4.10 cfs @
12.22 hrs,
Volume=
1.418 of
Secondary =
0.00 cfs @
0.00 hrs,
Volume=
0.000 of
Routing by Stor-Ind method, Time Span= 0.00-120.00 hrs, dt= 0.02 hrs
Starting Elev= 632.00' Surf.Area= 10,770 sf Storage= 31,566 cf
Peak Elev= 634.06'@ 12.22 hrs Surf.Area= 17,761 sf Storage= 61,094 cf (29,528 cf above start)
Plug -Flow detention time- 2,157.5 min calculated for 0.693 of (49% of inflow)
Center -of -Mass det. time= 1,005.9 min ( 1,832.6 - 826.6)
Volume Invert Avail.Storage Storage Description
#1- - - 628.00' 125,586 of Custom Stage Data (Prismatic) Listed below.,........_--- -
Elevation Surf.Area Inc.Store Cum.Store
.- (cubic -feet) _ (cubic -feet)
628.00 4,918 © 0
630.00 7,939 12,857 12,857
632.00 10,770 18,709 31,566
634.00 17,600 28,370 59,936
636.00 23,300 40,900 100,836
637.00 26,200 24,750 925,586
Device Routing Invert Outlet Devices
#1 Primary 631.00' 30.0" Round Culvert
L= 50.0' RCP, square edge headwall, Ke= 0-500
Inlet / Outlet Invert= 631.00'/ 630.00' S= 0.0200'1' Cc= 0.900
n= 0.012, Flow Area= 4.91 sf
#2 Device 1 632.00' 2.0" Horiz. Orifice/Grate C= 0.600
#3 Device 1 633.60' 4.0' long Sharp-Grested Rectangular Weir 2 End Contraction(s)
#4 Device 1 635.70' 12.0' long Sharp -Crested Rectangular Weir 2 End Contraction(s)
#5 Secondary 635.70' 20.0' long Sharp -Crested Rectangular Weir 2 End Contraction(s)
Primary OutFlow Max=4.09 cfs @ 12.22 hrs HW=634.06' (Free Discharge)
Ll =Culvert (Passes 4.09 cfs of 31.77 cfs potential flow)
2=Orifice]Grate (Orifice Controls 0.15 cfs @ 6.91 fps)
3=Sharp-Crested Rectangular Weir (Weir Controls 3.94 cfs @ 2.21 fps)
=Sharp -Crested Rectangular Weir ( Controls 0.00 cfs)
econdary OutFlow Max=0.00 cfs @ 0.00 hrs HW=632.00' (Free Discharge)
=Sharp -Crestal Rectangular Weir ( Controls 0.00 cfs)

WP -4 Type /l 24 -hr 25 -yr, 24 hr Rainfall=5.76"
Prepared by HydroCAD SAMPLER 1-800-927-7246 www.hydrocad.net Printed 6!9/2017
Fi droCAD®10.00-16 Sampler s/n 501551 02015 HydroCAD Software Solutions LLC
This report was prepared with the free HydroCAD SAMPLER, which is licensed for evaluation and
educational use only. For actual design or modeling applications you must use a full version of HydroCAD
which may be purchased at www.hydrocad.net. Full programs also include complete documentation,
tech nicalsupport, training materials, and additional features which are essential for actual design work.
Summary for Subcatchment 5S: PRE
Runoff = 34.73 cfs @ 12.09 hrs, Volume= 2.328 af, Depth= 2.71"
Runoff by SCS TR -20 method, UH=SCS, Weighted -CN, Time Span= 0.00-120.00 hrs, dt= 0.02 hrs
Type 11 24 -hr 25 -yr, 24 hr Rainfall=5.76"
Area (ac) CN Descriation
2.890 74 Grass
7.430 70 Woods
0.000 85 Gravel
0.000 98 Impervious
10.320 71 Weighted Average
Tc Length Slope Velocity Capacity Description
(min)_ (feet) (ftJft) (ft/sec) (cfs)
12.3 100 0.0300 0.14 Sheet Flow,
Grass: Dense n= 0.240 P2= 3.12"
3.9 660 0.0300 2.79 Shallow Concentrated Flow,
Unpaved Kv= 16.1 fos
16.2 760 Total

WP -4 Type !l 24 -hr 25 -yr, 24 hr Rainfall=5.76"
Prepared by HydroCAD SAMPLER 1-800-327-7246 www.hydrocad.net Printed 6/9/2017
HydroCAD& 10.00-16 Sampler s/n 501551 © 2015 HydroCAD Software Solutions LLC
This report was prepared with the free HydroCAD SAMPLER, which is licensed for evaluation and
educational use only. For actual design or modeling applications you must use a full version of HydroCAD
which may be purchased at www.hydrocad.net. Full programs also include complete documentation,
technicalsupport, training materials, and additional features which are essential for actual design work.
Summary for Subcatchment 3S: POST
Runoff = 74.32 cfs @ 11.96 hrs, Volume= 3.492 af, Depth= 3.97"
Runoff by SCS TR -20 method, UH=SCS, Weighted -CN, Time Span= 0.00-120.00 hrs, dt= 0.02 hrs
Type fl 24 -hr 25 -yr, 24 hr Rainfall=5.76"
Area (ac) CN Description
4.500
98
Impervious
6.050
74
Grass, good
" 0.000
70
Woods, good
0.000
85
Gravel
10.550
84
Weighted Average
Tc Length
Slope Velocity Capacity Description
min feet
ft/ft fusee cfs
5.0
Direct Entry,

WP -4 Type// 24 -hr 25 -yr, 24 hr Rainfall=5.76"
Prepared by HydroCAD SAMPLER 1-800-927-7246 www.hydrocad.net Printed 6/912017
HydroCAD® 10.00-16 Sampler s/n S01551 © 2015 HydroCAD Software Solutions LLC -
This report was prepared with the free HydroCAD SAMPLER, which is licensed for evaluation and
educational use only. For actual design or modeling applications you must use a full version of HydroCAD
which may be purchased at www,hydrocad.net. Full programs also include complete documentation,
technicalsupport, training materials, and additional features which are essential for actual design work.
Summary for Pond 4P: Wet Pond 3
Inflow Area = 10.550 ac, Inflow Depth = 3.97" for 25 -yr, 24 hr event
Inflow -
74.32 cfs @
11.96 hrs, Volume=
3.492 of
Outflow -
34.20 cfs @
12.05 hrs, Volume=
3.490 af, Atten= 54%, Lag= 5.4 min
Primary =
34.20 cfs @
12.05 hrs, Volume=
3.490 of
Secondary =
0.00 cfs @
0.00 hrs, Volume=
0.000 of
Routing by Stor-Ind method, Time Span= 0.00-120.00 hrs, dt= 0.02 hrs
Starting Elev= 632.00' Surf.Area= 10,770 sf Storage= 31,566 cf
Peak Elev= 635.63'@ 12.05 hrs Surf.Area= 22,246 sf Storage= 93,272 cf (61,706 cf above start)
Plug -Flow detention time= 657.1 min calculated for 2.765 of (79% of inflow)
Center -of -Mass det. time= 437.4 min ( 1,238.4 - 801.0 )
Volume Invert Avail.Storage Storage Description _
#1 628.00' 125,586 cf Custom Stage Data (Prismatic) Listed
ted below
Elevation Surf.Area lnc.Store Cum.Store
dee) (sq -ft) (cubic -feet) (cubic -feet)
628.00 4,918 0 0
630.00 7,939 12,857 12,857
632.00 10,770 18,709 31,566
634.00 17,600 28,370 59,936
636.00 23,300 40,900 100,836
637.00 26,200 24,750 125,586
Device Routing Invert Outlet Devices
#1 Primary 631.00' 30.0" Round Culvert
L= 50.0' RCP, square edge headwall, Ke= 0.500
Inlet /Outlet Invert= 631.00'/ 630.00' S=0.0200'/' Cc= 0.900
n= 0.012, Flow Area= 4.91 sf
#2 Device 1 632.00' 2.0" Horiz. Orifice/Grate C= 0.600
#3 Device 1 633.60' 4.0' long Sharp -Crested Rectangular Weir 2 End Contraction(s)
#4 Device 1 635.70' 12.0' long Sharp -Crested Rectangular Weir 2 End Contraction(s)
#5 Secondary 635.70' 20.0' long Sharp -Crested Rectangular Weir 2 End Contractions)
PrimaryOutFlow Max=34.07 cfs @ 12.05 hrs HW=635.62' (Free Discharge)
L1=Culvert (Passes 34.07 cfs of 43.42 cfs potential flow)
2=Orifice/Grate (Orifice Controls 0.20 cfs @ 9.17 fps)
3=Sharp-Crested Rectangular Weir (Weir Controls 33.87 cfs @ 4.65 fps)
=Sharp -Crested Rectangular Weir ( Controls 0.00 cfs)
econdary OutFlow Max=0.00 cfs @ 0.00 hrs HW=632.00' (Free Discharge)
Sharp -Crested Rectangular Weir ( Controls 0.00 cfs)

WP -4
Prepared by t
HvdroCAD®10.
Type fI 24 -hr
roCAD SAMPLER 1-800-927-7246 www.hydrocad.net
is Samnler s/n S01551 O 2015 HvdroCAD Software Solutions
50 yr, 24 hr Rainfafl=6.48"
Printed 619{2017
LLC
This report was prepared with the free HydroCAD SAMPLER, which is licensed for evaluation and
educational use only. For actual design or modeling applications you must use a full version of HydroCAD
which may be purchased at www.hydrocad.net. Full programs also include complete documentation,
technicalsupport, training materials, and additional features which are essential for actual design work.
Summary for Subcatchment 3S: POST
Runoff - 86.13 cfs @ 11.96 hrs, Volume= 4.086 af, Depth= 4.65"
Runoff by SCS TR -20 method, UH=SCS, Weighted -CN, Time Span= 0.00-120.00 hrs, dt= 0.02 hrs
Type II 24 -hr 50 yr, 24 hr Rainfall=6.48"
Area (ac) CN Description
" 4.500
98
Impervious
* 6.050
74
Grass, good
* 0.000
70
Woods, good
* 0.000
85
Gravel
10.550
84
Weighted Average
Tc Length Slope Velocity Capacity Description
min feet fllft ft/sec cfs
5.0 Direct Entry,

WP -4 Type 11 24 -hr 50 yr, 24 hr Rainfal1=6.48"
Prepared by HydroCAD SAMPLER 1-800-927-7246 www.hydrocad.net Printed 6/9/2017
H droCAD®10.00-16 Sampler stn 501551 ® 2015 HydroCAD Software Solutions LLC
This report was prepared with the free HydroCAD SAMPLER, which is licensed for evaluation and
educational use only. For actual design or modeling applications you must use a full version of HydroCAD
which maybe purchased at www.hydrocad.net. Full programs also include complete documentation,
tech nicalsu pport, training materials, and additional features which are essential for actual design work.
Summary for Pond 4P: Wet Pond 3
Inflow Area = 10.550 ac, Inflow Depth = 4.65" for 50 yr, 24 hr event
Inflow -
86.13 cfs @
11.96 hrs,
Volume=
4.086 of
Outflow =
52.15 cfs @
12.03 hrs,
Volume=
4.084 af, Atten= 39%, Lag= 4.3 min
Primary -
45.27 cfs @
12.03 hrs,
Volume=
4.040 of
Secondary =
6.88 cfs @
12.03 hrs,
Volume=
0.044 of
Routing by Stor-Ind method, Time Span= 0.00-120.00 hrs, dt= 0.02 hrs
Starting Bev= 632.00' Surf.Area= 10,770 sf Storage= 31,566 cf
Peak Elev= 635.92'@ 12.03 hrs Surf.Area= 23,082 sf Storage= 99,271 cf (67,705 cf above start)
Plug -Flow detention time= 556.3 min calculated for 3-359 of (82% of inflow)
Center -of -Mass det. time= 380.2 min ( 1,176.8 - 796.6)
Volume Invert Avail.Stora a Storage Description
#1 628.00' 125,586 cf Custom Stage Data (Prismatic) Listed below
Elevation Surf.Area Inc.Store Cum.Store
feet (sq-ftcubic-feet cubic -feet
628.00 4,918 0 0
630.00 7,939 12,857 12,857
632.00 10,770 18,709 31,566
634.00 17,600 28,370 59,936
636.00 23,300 40,900 100,836
637.00 26,200 24,750 125,586
Device Routing Invert Outlet Devices
#1 Primary - 631.00' 30.0`° Round Culvert
L= 50.0' RCP, square edge headwall, Ke= 0.500
Inlet/ Outlet Invert= 631.00'/ 630.00' S= 0.0200 'r Cc= 0-900
n= 0.012, Flow Area= 4.91 sf
#2 Device 1 632.00' 2.0" Horiz. Orifice/Grate C= 0.600
#3 Device 1 633.60' 4.0' long Sharp -Crested Rectangular Weir 2 End Contractions)
#4 Device 1 635.70' 12.0' long Sharp -Crested Rectangular Weir 2 End Contraction(s)
#5 Secondary 635.70' 20.0' long Sharp -Crested Rectangular Weir 2 End Contraction($)
Primary OutFlew Max=45.02 cfs @ 12.03 hrs HW=635.92' (Free Discharge)
Z••-1=Culvert (Passes 45.02 cfs of 45.27 cfs potential flow)
2==Orifice/Grate (Orifice Controls 0.21 cfs @ 9.53 fps)
3=Sharp-Crested Rectangular Weir (Weir Controls 40.82 cfs @ 4.98 fps)
=Sharp -Crested Rectangular Weir (Weir Controls 3.99 cfs @ 1.53 fps)
econdary OutFlow Max=6.66 cfs @ 12.03 hrs HW=635-92' (Free Discharge)
=Sharp -Crested Rectangular Weir (Weir Controls 6.66 cfs @ 1.53 fps)

Wet Pond Calculations
Drainage Area =
CN =
Tc
Impervious Area =
Rv =
WQv =
WQv =
Stage at Treatment Vol =
Permanent Pool Elev. _
Vpp =
App =
Dave =
Min SAIDA Ratio =
SA =
DA =
SAIDA Ratio Provided =
9.51 ac
82
0.08 hrs
3.22 ac
34 %
0.35
0.28 ac -ft
12246 ft3
624.6
624.0
47920 ft3
13860 ft2
3.46 ft
1.79
0.32 ac
9.51 ac
3.35
Project: BMP 5 Wet Pond
Date: 6 -Jun -17
Post Development
Soils = Group C
CN = 98
CN = 74
CN = 70
CN = 85
Water Quality Volume
Water Quality Volume
Main Pool Volume =
47920 ft3
Required Forebay Volume =
7188 ft
Porebay Volume Provided =
8670 ft3 622 to 624
Orifice Sizing
Time to release WQv =
59 hrs
Release Rate =
0.058 cfs
Average Head =
0.3 ft
Orifice Area =
0.022 ft2
Orifice Diameter =
2.00 in
3.22 ac
6.29 ac
0 ac
0 ac
imperv. Total
Grass, good
Woods, good
Grove]

WP -5 Detention
Results Summary
Pre CN =
72
Post CN =
82
Pre Drainage Area =
6.02 ac
Post Drainage Area =
9.51 ac
Pre Tc =
17.8 min
Post Tc =
5 min
2 yr 24 hr Storm
Max Stage = 625.53
Pre Dev Peak Flow = 5.82 cfs
Post Peak In -Flow = 25.97 cfs
Post Dev Routed Flow = 0.73 cfs
25 yr 24 hr Storm
Max Stage =
626.64
Pre Dev Peak Flow =
19.93 cfs
Post Peak In -Flow =
64.22 cfs
Post Dev Routed Flow =
17.05 cfs
50 yr 24 hr Storm
Max Stage = 626.91
Peak Routed Flow = 31.71 cfs
ok
ok
�LeiN

WP -5 Type /124 -hr 2 -yr, 24 hr Rainfall=3.12„
Prepared by HydroCAD SAMPLER 1-800-927-7246 www.hydrocad.net Printed 6/9/2017
H droCAD® 10.00-16 Sampler sin S01551 © 2015 H droCAD Software Solutions LLC
This report was prepared with the free HydroCAD SAMPLER, which is licensed for evaluation and
educational use only. For actual design or modeling applications you must use a full version of HydroCAD
which may be purchased at www.hydrocad.net. Full programs also include complete documentation,
technical support, training materials, and additional features which are essential for actual design work.
Summary for Subcatchment SS: PRE
Runoff = 5.82 cfs @ 12.12 hrs, Volume= 0.442 af, Depth= 0.88"
Runoff by SCS TR -20 method, UH=SCS, Weighted -CN, Time Span= 0.00-120.00 hrs, dt= 0.02 hrs
Type II 24 -hr 2 -yr, 24 hr Rainfall=3.12"
Area (ac) CN Description
* 1.950 74 Grass
* 3.930 70 Woods
* 0.000 85 Gravel, off-site
* 0.140 98 Impervious, off-site
6.020 72 Weighted Average
Tc Length Slope Velocity Capacity Description
(min) (feet) (Wft (ft/sec) (cfs)-
15.1 100 0.0180 0.11 Sheet Flow,
Grass: Dense n= 0.240 P2= 3.12"
2.7 530 0.0420 3.30 Shallow Concentrated Flow,
Unoaved Kv= 16.1 fos
17.8 630 Total

WP -5 Type 11 24 -hr 2 -yr, 24 hr Rainfall=3.12"
Prepared by HydroCAD SAMPLER 1-800-927-7246 www.hydrocad.net Printed 612812017
H droCAD®10.00-16 Sampler stn 501551 O 2015 H droCAD Software Solutions LLC
This report was prepared with the free HydroCAD SAMPLER, which is licensed for evaluation and
educational use only. For actual design or modeling applications you must use a full version of HydroCAD
which may be purchased at www.hydrocad.net. Full programs also include complete documentation,
technicalsupport, training materials, and additional features which are essential for actual design work.
Summary for Subcatchment 3S: POST
Runoff = 25.97 cfs @ 11.96 hrs, Volume= 1.168 af, Depth= 1.47'
Runoff by SCS TR -20 method, UH=SCS, Weighted -CN, Time Span= 0.00-120.00 hrs, dt= 0.02 hrs
Type 11 24 -hr 2 -yr, 24 hr Rainfall=3.12"
Area(ac)_CN Description
* 3.080 98 Impervious, on-site
* 0.140 98 Impervious, off-site
* 6.290 74 Grass, good
* 0.000 70 Woods, good
* 0.000 85 Gravel, off-site
9.510 82 Weighted Average
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft ft) (ft/sec) (cfs) __--
5.0 Direct Entry,

WP -5 Type 1124 -hr 2 -yr, 24 hr Rainfaff=3.12"
Prepared by HydroCAD SAMPLER 1-800-927-7246 www.hydrocad.net Printed 6/28/2017
H droCADO 10.00-16 Sampler s/n S01551 O 2015 HydroCAD Software Solutions LLC
This report was prepared with the free HydroCAD SAMPLER, which is licensed for evaluation and
educational use only. For actual design or modeling applications you must use a full version of HydroCAD
which may be purchased at www.hydrocad.net. Full programs also include complete documentation,
technicalsupport, training materials, and additional features which are essential for actual design work.
Summary for Pond 4P: Wet Pond 3
Inflow Area W 9.510 ac, Inflow Depth = 1.47" for 2 -yr, 24 hr event
Inflow - 25.97 cfs @ 11.96 hrs, Volume= 1.168 of
Outflow = 0.73 cfs @ 14.72 hrs, Volume= 1.098 af, Atten= 97%, Lag= 165.3 min
Primary - 0.73 cfs @ 14.72 hrs, Volume= 1.098 of
Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 of
Routing by Stor-Ind method, Time Span= 0.00-120.00 hrs, dt= 0.02 hrs
Starting Elev= 624.00' Surf.Area= 18,800 sf Storage= 59,900 cf
Peak Elev= 625.53' @ 14.72 hrs Surf.Area= 23,688 sf Storage= 93,507 cf (33,607 cf above start)
Plug -Row detention time= (not calculated. initial storage exceeds outflow)
Center -of -Mass det. time= 1,867.3 min ( 2,700.6 - 833.3 )
Volume Invert Avail.Stora a Storage Description--
#1
escri tion#1 620.00' 159,100 cf Custom Stage Data (Prismatic) Listed below
Elevation Surf.Area lnc.Store Cum.Store
feet (sq -ft) cubic -feet cubic -feet
620.00 10,100 0 0
622.00 15,500 25,600 25,600
624.00 18,800 34,300 59,900
626.00 25,200 44,000 103,900
628.00 30,000 55,200 159,100
Device Routing Invert Outlet Devices
#1 Primary 623.00' 24.0" Round Culvert
L= 50.0' RCF', square edge headwall, Ke= 0.500
Inlet/ Outlet Invert= 623.00'/ 622.00' S=0.0200'1' Cc= 0.900
n= 0.012, Flow Area= 3.14 sf
#2 Device 1 624.00' 2.0" Horiz. Orifice/Grate C= 0.600
#3 Device 1 625.40' 4.0' long Sharp -Crested Rectangular Weir 2 End Contraction(s)
#4 Device 1 626.70' 12.0' long Sharp -Crested Rectangular Weir 2 End Contraction(s)
#5 Secondary 626.70' 20.0' long Sharp -Crested Rectangular Weir 2 End Contraction(s)
Primary OutFlow Max=0.72 cfs @ 14.72 hrs HW=625.53' (Free Discharge)
1-'-1=Culvert (Passes 0.72 cfs of 18.70 cfs potential flow)
2=Orifice/Grate (Orifice Controls 0.13 cfs @ 5.95 fps)
3=Sharp-Crested Rectangular Weir (Weir Controls 0.59 cfs @ 1.17 fps)
=Sharp -Crested Rectangular Weir ( Controls 0.00 cfs)
econdary OutFlow Max=0.00 cfs @ 0.00 hrs HW=624.00' (Free Discharge)
E­S=Sharp-Crested Rectangular Weir ( Controls 0.00 cfs)

WP -5 Type 1124 -hr 25 -yr, 24 hr Rainfall= 5. 76 "
Prepared by HydroCAD SAMPLER 1-800-927-7246 www.hydrocad.net Printed 6/912017
HydroCAD®10 00-16 Sampler sln S01551 02015 HydroCAD Software Solutions LLC
This report was prepared with the free HydroCAD SAMPLER, which is licensed for evaluation and
educational use only. For actual design or modeling applications you must use a full version of HydroCAD
which may be purchased at www.hydrocad.net. Full programs also include complete documentation,
technicalsupport, training materials, and additional features which are essential for actual design work.
Summary for Subcatchment 5S: PRE
Runoff = 19.93 efs @ 12.11 hrs, Volume= 1.404 af, Depth= 2.80„
Runoff by SCS TR -20 method, UH=SCS, Weighted -CN, Time Span= 0.00-120.00 hrs, dt= 0.02 hrs
Type li 24 -hr 25 -yr, 24 hr Rainfall=5.76°
Area (ac) CN Description
1.950 74 Grass
3.930 70 Woods
0.000 85 Gravel, off-site
0.140 98 Impervious, off-site -- ___---
6.020 72 Weighted Average
Tc Length Slope Velocity Capacity Description
min feet(ft/ft) ftlsec) (cfs
15.1 100 0.0180 0.11 Sheet Flow,
Grass: Dense n= 0.240 P2= 3.12"
2.7 530 0.0420 3.30 Shallow Concentrated Flow,
Unpaved Kv= 16.1 fos
17.8 630 Total

WP -5 Type 1124 -hr 25 -yr, 24 hr Rainfall=5.76.,
Prepared by HydroCAD SAMPLER 1-800-927-7246 www-hydrocad.net
Printed 6/2812017
H droCADO 10.00-16 Sampler sln S015510 2015 H droCAD Software Solutions LLC
This report was prepared with the free HydroCAD SAMPLER, which is licensed for evaluation and
educational use only. For actual design or modeling applications you must use a full version of HydroCAD
which may be purchased at www.hydrocad.net. Full programs also include complete documentation,
technicalsupport, training materials, and additional features which are essential for actual design work.
Summary for Subcatchment 3S: POST
Runoff = 64.22 cfs @ 11.96 hrs, Volume= 2.985 af, Depth= 3.77"
Runoff by SCS TR -20 method, UH=SCS, Weighted -CN, Time Span= 0.00-120.00 hrs, dt= 0.02 hrs
Type It 24 -hr 25 -yr, 24 hr Rainfall=6.7611
Area ac
CN
Description
" 3.080
98
impervious, on-site
0.140
98
impervious, off-site
6.290
74
Grass, good
0.000
70
Woods, good
0.000
85
Gravel, off-site
9.510
82
Weighted Average
Tc Length Slope Velocity Capacity Description
5.0
Direct Entry,

WP_5 Type 1124 -hr 25 -yr, 24 hr Rainfall =5.76"
Prepared by HydroCAD SAMPLER 1-800-927-7246 www.hydrocad.net Printed 6/28/2017
H droCAf30 10.00-16 Sampler sin 501551 @2015 HydroCAD Software Solutions LLC
This report was prepared with the free HydroCAD SAMPLER, which is licensed for evaluation and
educational use only. For actual design or modeling applications you must use a full version of HydroCAD
which may be purchased at www.hydrocad.net. Full programs also include complete documentation,
tech n icalsupport, training materials, and additional features which are essential for actual design work.
Summary for Pond 4P: Wet Pond 3
Inflow Area = 9.510 ac, Inflow Depth = 3.77" for 25 -yr, 24 hr event
Inflow =
64.22 cfs @
11.96 hrs,
Volume=
2.985 of
Outflow -
17.05 cfs @
12.08 hrs,
Volume=
2.912 af, Atten= 73%, Lag= 7.5 min
Primary -
17.05 cfs @
12.08 hrs,
Volume=
2.912 of
Secondary =
0.00 cfs @
0.00 hrs,
Volume=
0.000 of
Routing by Stor-Ind method, Time Span= 0.00-120.00 hrs, dt= 0.02 hrs
Starting Elev= 624.00' Surf.Area= 18,800 sf Storage= 59,900 cf
Peak Elev= 626.64' @ 12.08 hrs Surf.Area= 26,729 sf Storage= 121,480 cf (61,580 cf above start)
Plug -Flow detention time= 1,566.8 min calculated for 1.537 of (51% of inflow)
Center -of -Mass det. time= 744.6 min ( 1,561.1 - 806.5)
Volume Invert Avail.Stora a Storage Description
#1 620.00' 159,100 cf Custom Stage Data (Prismatic) Listed below
Elevation Surf.Area Inc.Store Cum.Store
feet _(s-ftcubic-feet cubic -feet
620.00 10,100 0 0
622.00 15,500 25,600 25,600
624.00 18,800 34,300 69,900
626.00 25,200 44,000 103,900
628.00 30,000 55,200 159,100
Device Routing Invert Outlet Devices
#1 Primary 623.00' 24.0" Round Culvert
L= 50.0' RCP, square edge headwall, Ke= 0.500
Inlet/ Outlet Invert= 623.00'1622.00' S=0.0200? Cc= 0.900
n=0.012, Flow Area= 3.14 sf
#2 Device 1 624.00' 2.0" Horiz. Orifice/Grate C= 0.600
#3 Device 1 625.40' 4.0' long Sharp -Crested Rectangular Weir 2 End Contraction(s)
#4 Device 1 626.70' 12.0' long Sharp -Crested Rectangular Weir 2 End Contraction(s)
#5 Secondary 626.70' 20.0' long Sharp -Crested Rectangular Weir 2 End Contraction(s)
Primary OutFlow Max=17.03 cfs @ 12.08 hrs HW=626.84' (Free Discharge)
�'l=Culvert (Passes 17.03 cfs of 24.56 cfs potential flow)
2=Orifice/Grate (Orifice Controls 0.17 cfs @ 7.82 fps)
3=Sharp-Crested Rectangular Weir (Weir Controls 16.86 cfs @ 3.64 fps)
=Sharp -Crested Rectangular Weir ( Controls 0.00 cfs)
§Secondary OutFlow Max=0,00 cfs @ 0.00 hrs HW=624.00' (Free Discharge)
La=Sharp-Crested Rectangular Weir ( Controls 0.00 cfs)

WP -5 Type// 24 -hr 50 yr, 24 hr Rainfall= 6.48"
Prepared by HydroCAD SAMPLER 1-800-927-7246 www.hydrocad.net Printed 6128/2017
H droCAD® '10.00-16 Sampler sln S01551 02015 HydroCAD Software Solutions LLC
This report was prepared with the free HydroCAD SAMPLER, which is licensed for evaluation and
educational use only. For actual design or modeling applications you must use a full version of HydroCAD
which may be purchased at www.hydrocad.net. Full programs also include complete documentation,
technicalsupport, training materials, and additional features which are essential for actual design work.
Summary for Subcatchment 3S: POST
Runoff = 74.86 cfs @ 11.96 hrs, Volume= 3.511 af, Depth= 4.43"
Runoff by SCS TR -20 method, UH=SCS, Weighted -CN, Time Span= 0.00-120.00 hrs, dt= 0.02 hrs
Type 11 24 -hr 50 yr, 24 hr Rainfall=6.48"
Area (ac) CN Description
3.080 98 Impervious, on-site
* 0.140 98 Impervious, off-site
* 6.290 74 Grass, good
* 0.000 70 Woods, good
* 0.000 85 Gravel, off-site.,
9.510 82 Weighted Average
Tc Length Slope Velocity Capacity Description
min feet ftlit ft/sec cfs
5.0 Direct Entry,

WP -5 Type 1124 -hr 50 yr, 24 hr Rainfall=6.48"
Prepared by HydroCAD SAMPLER 1-800-927-7246 www.hydrocad.net Printed 6/28/2017
H droCAD®10.00-16 Sampler s/n S01561 02015 HydroCAD Software Solutions LLC
This report was prepared with the free HydroCAD SAMPLER, which is licensed for evaluation and
educational use only. For actual design or modeling applications you must use a full version of HydroCAD
which may be purchased at www.hydrocad.net. Full programs also include complete documentation,
technicalsupport, training materials, and additional features which are essential for actual design work.
Summary for Pond 4P: Wet Pond 3
Inflow Area = 9.510 ac, Inflow Depth = 4.43" for 50 yr, 24 hr event
Inflow
74.86 cfs @
11.96 hrs,
Volume=
3.511 of
Outflow -
31.71 cfs @
12.05 hrs,
Volume=
3.438 af, Atten= 58%, Lag= 5.7 min
Primary --
25.36 cfs @
12.05 hrs,
Volume=
3.380 of
Secondary=
6.34 cfs @
12.05 hrs,
Volume=
0.058 of
Routing by Stor-Ind method, Time Span= 0.00-120.00 hrs, dt= 0.02 hrs
Starting Elev= 624.00' Surf -Area= 18,800 sf Storage= 59,900 cf
Peak Elev= 626.91' @ 12.05 hrs Surf.Area= 27,383 sf Storage= 129,007 cf (69,107 cf above start)
Plug -Flow detention time= 1,213.8 min calculated for 2.062 of (59% of inflow)
Center -of -Mass det. time= 638.6 min ( 1,440.6 - 801.9)
Invert
Avail.Storage Storage Description
_Volume
#1 620.00'
159,100 cf Custom Stage Data (Prismatic) Listed below
Elevation Surf.Area
Inc.Store Cum.Store
feet
(sq -ft)
(cubic-feetcubic-feet
620.00
10,100
0 0
622.00
15,500
25,600 25,600
624.00
18,800
34,300 59,900
626.00
25,200
44,000 1031900
628.00
30,000
55,200 159,100
Device Routing
Invert
Outlet Devices
#1 Primary
623.00'
24.0" Round Culvert
L= 50.0' RCP, square edge headwall, Ke= 0.500
Inlet/ Outlet Invert= 623.00'/622.00' S=0.02007' Cc= 0.900
n= 0.012, Flow Area= 3.14 sf
#2 Device 1
624.00'
2.0" Horiz. Orifice/Grate C= 0.600
#3 Device 1
625.40'
4.0' long Sharp -Crested Rectangular Weir 2 End Contraction(s)
#4 Device 1
626.70'
12.0' long Sharp -Crested Rectangular Weir 2 End Contraction(s)
#5 Secondary
626.70'
20.0' long Sharp -Crested Rectangular Weir 2 End Contraction(s)
Primary OutlF"low Max=25.79 cfs @ 12.05 hrs HW=626.91' (Free Discharge)
L1=Culvert (Inlet Controls 25.79 cfs @ 8.21 fps)
2=Orifice/Grate (Passes < 0.18 cfs potential flow)
3=Sharp-Crested Rectangular Weir (Passes < 22.38 cfs potential flow)
=Sharp -Crested Rectangular Weir (Passes < 3.69 cfs potential flow)
econdary OutFlow Max=6.16 cfs @ 12.05 hrs HW=626.91' (Free Discharge)
T-S=Sharp-Crestod Rectangular Weir (Weir Controls 6.16 cfs @ 1.49 fps)

Wet Pond Calculations
Drainage Area
ON =
Tc
Impervious Area =
Rv
WQv =
WQv =
Stage at Treatment Vol =
Permanent Pool Elev. =
Vpp =
App =
©ave =
Min SADA Ratio
SA =
DA =
SAIDA Ratio Provided =
Main Pool Volume =
Required Forebay Volume =
Forebay Volume Provided =
Orifice Sizing
Time to release WQv =
Release Rate =
Average Mead =
Orifice Area
Orifice Diameter =
10.65 ac
85
0.08 hrs.
5.02 ac
47 %
0.47
0.42 ac -ft
18333 ft3
646.8
646.0
54250 ft3
16354 ft2
3.32 ft
1.79
0.38 ac
10.55 ac
3.53
54250 ft3
8138 ft3
8443 ft3
49 hrs
0.104 cfs
0.4 ft
0.034 ft2
2.50 in
Project: BMP 7 Wet Pond
Date: 15 -Jun -17
Post Development
Soils = Group C
ON= 98
CN = 74
ON = 70
ON = 85
Water Quality Volume
Water Quality Volume
642.5 to 646
5.02 ac
5.63 ac
0 ac
0 ac
Imperv. Total
Grass, good
Woods, good
Gravel

WP -7 Detention
Results Summary
Pre CN =
73
Post CN =
85
Pre Drainage Area =
9.02 ac
Post Drainage Area =
10.65 ac
Pre Tc =
16.7 rein
Post Tc =
5 min
2 yr 24 hr Storm
Max Stage =
647.36
Pre Dev Peak Flow =
9.71 cfs
Post Peak In -Flow =
33.06 cfs
Post Dev Routes! Flow =
3.01 cfs
25 yr 24 hr Storm
Max Stage =
648.61
Pre Dev Peak Flow =
31.96 cfs
Post Peak In -Flow =
76.52 cfs
Post Dev Routed Flow =
28.47 cfs
50 yr 24 hr Storm
Max Stage = 648.85
Peak Routed Flow = 41.88 cfs
ok
W,
ok

WP -7 Type 1124 -hr 2 -yr, 24 hr Rainfall=3.12„
Prepared by HydroCAD SAMPLER 1-800-927-7246 www.hydrocad.net Printed 6/15/2017
H droCAD®10.00-16 Sam ler s/n S01551 02015 HydroCAD Software Solutions LLC
This report was prepared with the free HydroCAD SAMPLER, which is licensed for evaluation and
educational use only. For actual design or modeling applications you must use a full version of HydroCAD
which may be purchased at www.hydrocad.net. Full programs also include complete documentation,
technicalsupport, training materials, and additional features which are essential for actual design work.
Summary for Subcatchment SS: PRE
Runoff - 9.71 cfs @ 12.10 hrs, Volume= 0.701 af, Depth= 0.93"
Runoff by SCS TR -20 method, UH=SCS, Weighted -CN, Time Span= 0.00-120.00 hrs, dt= 0.02 hrs
Type 11 24 -hr 2 -yr, 24 hr Rainfall=3.12"
Area (ac) CN Description
* 5.390 74 Grass
* 3.420 70 Woods
* 0.150 85 Gravel
' 0.060 98 impervious
9.020 73 Weighted Average
Tc Length Slope Velocity Capacity Description
min(feet) ft/ft ft/sec cfs
14.5 100 0.0200 0.12 Sheet Flow,
Grass. Dense n= 0.240 P2= 3.12"
2.2 480 0.0490 3.56 Shallow Concentrated Flow,
Unpaved Kv= 16.1 fps
16.7 580 Total

WP -7 TYPe 1124 -hr 2 -yr, 24 hr Rainfali=3.12"
Prepared by HydroCAD SAMPLER 1-800-927-7246 www.hydrocad.net Printed 6/15/2017
HydroCAD@ 10 00-16 Sampler sln S01551 @2015 HydroCAD Software Solutions LLC
This report was prepared with the free HydroCAD SAMPLER, which is licensed for evaluation and
educational use only. For actual design or modeling applications you must use a full version of HydroCAD
which may be purchased at www.hydrocad.net. Full programs also include complete documentation,
technicalsupport, training materials, and additional features which are essential for actual design work.
Summary for Subcatchment 3S: POST
Runoff = 33.06 cfs @ 11.96 hrs, Volume= 1.499 af, Depth= 1.69"
Runoff by SCS TR -20 method, UH=SCS, Weighted -CN, Time Span= 0.00-120.00 hrs, dt= 0.02 hrs
Type II 24 -hr 2 -yr, 24 hr Rainfall=3.12"
Area (ac) CN Description
* 5.020 98
Impervious
* 5.630 74
Grass, good
* 0.000 70
Woods, good
* 0.000 85
Gravel
10.650 85
Weighted Average
Tc Length
Slope Velocity Capacity Description
min feet
ftlft ft/sec cfs
5.0
Direct (Entry,

WP -7 Type If 24 -hr 2 -yr, 24 hr Rainfall=3.12"
Prepared by HydroCAD SAMPLER 1-800-927-7245 www.hydrocad.net Printed 6/1512017
H droCADO 10.00-16 sampler sln S01551 U 2015 HydroCAD Software Solutions LLC
This report was prepared with the free HydroCAD SAMPLER, which is licensed for evaluation and
educational use only_ For actual design or modeling applications you must use a full version of HydroCAD
which may be purchased at www.hydrocad.net. Full programs also include complete documentation,
technicalsupport, training materials, and additional features which are essential for actual design work.
Routing by Stor-Ind method, Time Span= 0.00-120.00 hrs, dt= 0.02 hrs
Starting Elev= 646.00' Surf.Area= 20,200 sf Storage= 62,700 cf
Peak Elev= 647.36'@ 12.45 hrs Surf.Area= 27,419 sf Storage= 96,118 cf (33,418 cf above start)
Plug -Flow detention time= 4,715.2 min calculated for 0.059 of (4% of inflow)
Center -of -Mass det. time= 909.5 min ( 1,732.7 - 823.2 )
Volume
Invert Avail.Storage
Summary for Pond 4P: Wet Pond 3
Inflow Area =
10.650 ac,
Inflow Depth = 1.69"
for 2 -yr, 24 hr event
Inflow -
33.06 cfs @
11.96 hrs, Volume=
1.499 of
Outflow P
3.01 cfs @
12.45 hrs, Volume=
1.498 af, Atten= 91%, Lag= 29.0 min
Primary -
3.01 cfs @
12.45 hrs, Volume=
1.498 of
Routing by Stor-Ind method, Time Span= 0.00-120.00 hrs, dt= 0.02 hrs
Starting Elev= 646.00' Surf.Area= 20,200 sf Storage= 62,700 cf
Peak Elev= 647.36'@ 12.45 hrs Surf.Area= 27,419 sf Storage= 96,118 cf (33,418 cf above start)
Plug -Flow detention time= 4,715.2 min calculated for 0.059 of (4% of inflow)
Center -of -Mass det. time= 909.5 min ( 1,732.7 - 823.2 )
Volume
Invert Avail.Storage
Storage
Description
#1
642.00' 178,000 cf
Custom Stage Data (Prismatic) Listed below
Elevation
Surf.Area Inc.Store
Cum.Store
(feet)
(sq -ft)_ (cubic -feet)
(cubic -feet
642.00
10,700
0
0
644.00
15,900
26,600
26,600
646.00
20,200
36,100
62,700
647.00
26,400
23,300
86,000
64S_00
29,200
27,800
113,800
650.00
35,000
64,200
178,000
Device Routing Invert Outlet Devices
#1 Primary 642.00' 34.0" Round Culvert
L= 32.0' RCP, square edge headwall, Ke= 0.500
Inlet 1 Outlet Invert= 642.00'1641.70' S- 0.0094'!` Cc= 0.900
n= 0.012, Flow Area= 4.91 sf
#2 Device 1 646.00' 2.5" Horia. Orifice/Grate C= 0.600
#3 Device 1 647.00' 4.0' long Sharp -Crested Rectangular Weir 2 End Contraction(s)
#4 Device 1 648.40' 12.0' long Sharp -Crested Rectangular Weir 2 End Contraction(s)
Primary OutFlow Max=3.01 cfs @ 12.45 hrs HW=647.36' (Free Discharge)
t--1=Culvert (Passes 3.01 cfs of 47.94 cfs potential flow)
2=Orifice/Grate (Orifice Controls 0.19 cfs @ 5.62 fps)
3=Sharp-Crested Rectangular Weir (Weir Controls 2.82 cfs @ 1.97 fps)
=Sharp -Crested Rectangular Weir ( Controls 0.00 cfs)

Wp_a Type 1124 -hr 25 -yr, 24 hr Rainfall=5.76"
Prepared by HydroCAD SAMPLER 1-800-927-7246 www.hydrocad.net Printed 6/1512017
H droCAD®10A0-16 Sampler s/n 501551 Q 2015 HydroCAD Software Solutions LLC
This report was prepared with the free HydroCAD SAMPLER, which is licensed for evaluation and
educational use only. For actual design or modeling applications you must use a full version of HydroCAD
which may be purchased at www.hydrocad.net. Full programs also include complete documentation,
technicalsupport, training materials, and additional features which are essential for actual design work.
Summary for Subcatchment SS. PRE
Runoff - 31.96 cfs @ 12.09 hrs, Volume= 2.173 af, Depth= 2.89"
Runoff by SCS TR -20 method, UH=SCS, Weighted -CN, Time Span= 0.00-120.00 hrs, dt= 0.02 hrs
Type II 24 -hr 25 -yr, 24 hr Rainfall=5.76"
Area (ac) CN Description
* 5.390 74 Grass
* 3.420 70 Woods
* 0.150 85 Gravel
* 0.060 98 Impervious
9.020 73 Weighted Average
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) ! ftlsec) (cfs)
14.5 100 0.0200 0.12 Sheet Flow,
Grass: Dense n= 0.240 P2= 3.12°
2.2 480 0.0490 3.56 Shallow Concentrated Flow,
Unpaved Kv= 16.1 fps
16.7 580 Total

WP -7 Type// 24 -hr 25 yr, 24 hr Rainfall=5.76"
Prepared by HydroCAD SAMPLER 1-600-927-7246 www.hydrocad.net Printed 6/15/2017
H droCAD®10 00-16 Sampler s1n 501551 © 2015 HydroCAD Software Solutions LLC
This report was prepared with the free HydroCAD SAMPLER, which is licensed for evaluation and
educational use only. For actual design or modeling applications you must use a full version of HydroCAD
which may be purchased at www.hydrocad.net, Full programs also include complete documentation,
tech nicalsu pport, training materials, and additional features which are essential for actual design work.
Summary for Subcatchment 3S. POST
Runoff - 76.52 cfs a@ 11.96 hrs, Volume= 3.618 af, Depth= 4.08"
Runoff by SCS TR -20 method, UH=SCS, Weighted -CN, Time Span= 0.00-120.00 hrs, dt= 0.02 hrs
Type II 24 -hr 25 -yr, 24 hr Rainfall=5.76"
Area (ac) CN Description
* 5.020
98
Impervious
* 5.630
74
Grass, good
* 0.000
70
Woods, good
* 0.000
85
Gravel
10.650 85 Weighted Average
Tc Length Slope Velocity Capacity Description
(rain) (feet) ftlft) (fUsec) (cfs)
5.0 Direct Entry,

WP -7 Type 11 24 -hr 25 -yr, 24 hr Rainfall=5.76"
Prepared by HydroCAD SAMPLER 1-800-927-7246 www.hydrocad.net Printed 6/1512017
H droCAD@)10.00-16 Sampler sln 501551 O 2015 HydroCAD Software Solutions LLC
This report was prepared with the free HydroCAD SAMPLER, which is licensed for evaluation and
educational use only. For actual design or modeling applications you must use a full version of HydroCAD
which may be purchased at www.hydrocad.net. Full programs also include complete documentation,
technicalsupport, training materials, and additional features which are essential for actual design work.
Routing by Stor-Ind method, Time Span= 0.00-120.00 hrs, dt= 0.02 hrs
Starting Elev= 646.00' Surf.Area= 20,200 sf Storage= 62,700 cf
Peak Elev= 648.61'@ 12.06 hrs Surf.Area= 39,958 sf Storage= 133,259 cf (70,559 cf above start)
Plug -Flow detention time= 845.0 min calculated for 2.177 of (60% of inflow)
Center -of -Mass det. time= 419.4 min (1,217.5 - 798.1 )
Volume Invert
Avail.Storage Storage Description _ - - - - -----�
Summary for Pond 4P: Wet Pond 3
Inflow Area =
10.650 ac,
Inflow Depth = 4.08"
for 25 -yr, 24 hr event
Inflow -
76.52 cfs @
11.96 hrs, Volume=
3.618 of
Outflow -
28.47 cfs @
12.06 hrs, Volume=
3.616 af, Atten= 63%, Lag= 6.2 min
Primary =
28.47 cfs @
12.06 hrs, Volume=
3.616 of
Routing by Stor-Ind method, Time Span= 0.00-120.00 hrs, dt= 0.02 hrs
Starting Elev= 646.00' Surf.Area= 20,200 sf Storage= 62,700 cf
Peak Elev= 648.61'@ 12.06 hrs Surf.Area= 39,958 sf Storage= 133,259 cf (70,559 cf above start)
Plug -Flow detention time= 845.0 min calculated for 2.177 of (60% of inflow)
Center -of -Mass det. time= 419.4 min (1,217.5 - 798.1 )
Volume Invert
Avail.Storage Storage Description _ - - - - -----�
#1 642.00 '
178,000 of Custom Stage Data (Prismatic) Listed below
Elevation Surf.Area
Inc.Store Cum.Store
Leet)
s -ftcubic-feet
cubic -feet
642.00
10,700
0 0
644.00
15,900
26,600 26,600
646.00
20,200
36,100 62,700
647.00
26,400
23,300 86,000
648.00
29,200
27,800 113,800
650.00
35,900
64,200 178,000
Device Routing
Invert
Outlet Devices
#1� Primary
642.00'
30.0°' Round Culvert
L= 32.0' RCP, square edge headwall, Ke= 0.500
Inlet /Outlet Invert= 642.00'/641.70' S= 0.0094'r Cc= 0.900
n= 0.012, Flow Area= 4.91 sf
#2 Device 1
646.00'
2.5" Horiz. OrificelGrate C= 0.600
#3 Device 1
647.00'
4.0' long Sharp -Crested Rectangular Weir 2 End Contractions)
#4 Device 1
648.40'
12.0' long Sharp -Crested Rectangular Weir 2 End Contraction(s)
Primary OutFlow Max=28.36 cfs @ 12.06 hrs HW=648-61' (Free Discharge)
Z ---,=Culvert (Passes 28.36 cfs of 54.69 cfs potential flow)
2=OrificelGrate (Orifice Controls 0.26 cfs @ 7.77 fps)
3=Sharp-Crested Rectangular Weir (Weir Controls 24.46 cfs @ 4.14 fps)
=Sharp -Crested Rectangular Weir (Weir Controls 3.63 cfs @ 1.48 fps)

WP -7 Type 1124 -hr 50 yr, 24 hr Rainfall= 6.48 "
Prepared by HydroCAD SAMPLER 1-800-927-7246 www.hydrocad.net Printed 6115/2017
HydroCAD®-10.00-16 Sampler sln $01551 © 2015 HydroCAD Software Solutions LLC
This report was prepared with the free HydroCAD SAMPLER, which is licensed for evaluation and
educational use only. For actual design or modeling applications you must use a full version of HydroCAD
which may be purchased at www,hydrocad.net. Full programs also include complete documentation,
technicalsupport, training materials, and additional features which are essential for actual design work.
Summary for Subcatchment 3S: POST
Runoff = 8$.44 cfs @ 11.96 hrs, Volume= 4.222 af, Depth= 4.76"
Runoff by SCS TR -20 method, UH=SCS, Weighted -CN, Time Span= 0.00-120.00 hrs, dt= 0.02 hrs
Type 11 24 -hr 50 yr, 24 hr Rainfall=6.4$"
Area (ac) CN Description
* 5.020 98
Impervious
* 5.630 74
Grass, good
* 0.000 70
Woods, good
* 0.000 85
Gravel
10.650 85
Weighted Average
Tc Length
Slope Velocity Capacity Description
(min) (feet)
(ftlft) (ftlsec) (cfs)
5.0
Direct Entry,

WP -7 Type 1124 -hr 50 yr, 24 hr Rainfall=6.48"
Prepared by HydroCAD SAMPLER 1-800-927-7246 www.hydrocad.net Printed 6/15/2017
H droCAD®10.00-16 Sampler sln 501551 © 2015 HydroCAD Software Solutions LLC
This report was prepared with the free HydroCAD SAMPLER, which is licensed for evaluation and
educational use only. For actual design or modeling applications you must use a full version of HydroCAD
which may be purchased at www.hydrocad.net. Full programs also include complete documentation,
technicalsupport, training materials, and additional features which are essential for actual design work.
Routing by Stor-Ind method, Time Span= 0.00-120.00 hrs, dt= 0.02 hrs
Starting Elev= 646.00' Surf.Area= 20,200 sf Storage= 62,700 cf
Peak Elev= 648-85'@ 12.05 hrs Surf.Area= 31,663 sf Storage= 141,058 cf (78,358 cf above start)
Plug -Flow detention time= 695.0 min calculated for 2.781 of (66% of inflow)
Center -of -Mass det. time= 367.8 min ( 1,161.5 - 793.8 )
Volume Invert
Avail.Storage Storage Description
Summary for Pond 4P: Wet Pond 3
Inflow Area =
10.650 ac,
Inflow Depth = 4.76"
for 50 yr, 24 hr event
Inflow -
88.44 cfs @
11.96 hrs, Volume=
4.222 of
Outflow -
41.88 cfs @
12.05 hrs, Volume=
4.220 af, Atten= 53%, Lag= 5.3 min
Primary =
41.88 cfs @
12.05 hrs, Volume=
4.220 of
Routing by Stor-Ind method, Time Span= 0.00-120.00 hrs, dt= 0.02 hrs
Starting Elev= 646.00' Surf.Area= 20,200 sf Storage= 62,700 cf
Peak Elev= 648-85'@ 12.05 hrs Surf.Area= 31,663 sf Storage= 141,058 cf (78,358 cf above start)
Plug -Flow detention time= 695.0 min calculated for 2.781 of (66% of inflow)
Center -of -Mass det. time= 367.8 min ( 1,161.5 - 793.8 )
Volume Invert
Avail.Storage Storage Description
#1 6442.00'
178,000 cf Custom Stage Data (Prismatic) Listed below
Elevation Surf.Area
Inc.Store Cum.Store
(feet) - --
(sq -ft)
(cubic -feet) (cubic -feet)
642.00
10,700
0 0
644.00
15,900
26,600 26,600
646.00
20,200
36,100 62,700
647.00
26,400
23,300 86,000
648.00
29,200
27,800 113,800
650.00
35,000
64,200 178,000
Device Routing
Invert
Outlet Devices
#1 Primary
642.00'
30.0" Round Culvert
L= 32.0' RCP, square edge headwall, Ke= 0.500
Inlet/ Outlet Invert= 642.00'/641.70' S=0.0094'1' Cc= 0.900
n= 0.012, Flow Area= 4.91 sf
#2 Device 1
646.00'
2.5" Horiz. Orifice/Grate C= 0.600
#3 Device 1
647.00'
4.0' long Sharp -Crested Rectangular Weir 2 End Contraction(s)
#4 Device 1
648.40'
12.0' long Sharp -Crested Rectangular Weir 2 End Contraction(s)
Primary OutFlow Max=41.63 cfs @ 12.05 hrs HW=648.85' (Free Discharge)
t-1=Culvert (Passes 41.63 cfs of 55.91 cfs potential flow)
2=Orifice/Grate (Orifice Controls 0.28 cfs @ 8.12 fps)
3=Sharp-Crested Rectangular Weir (Weir Controls 29.77 cfs @ 4.44 fps)
Sharp -Crested Rectangular Weir (Weir Controls 11.58 cfs @ 2.18 fps)

Wet Pond Calculations
Drainage Area =
CN =
Tc =
Impervious Area =
Rv -
WQv =
WQv =
Stage at Treatment Vol =
Permanent Pool Elev.
Vpp =
App =
Dave =
Min SAIDA Ratio =
SA =
DA =
SAIDA Ratio Provided =
Main Pool Volume =
Required Forebay Volume =
Forebay Volume Provided =
Orifice Sizing
Time to release WQv =
Release Rate =
Average Head =
Orifice Area =
Orifice Diameter =
2.21 ac
82
0.08 hrs
0.67 ac
30%
0.32
0.06 ac -ft
2590 ft3
641.4
641.0
11822 0
3694 ft2
3.20 ft
1.79
0.08 ac
2.21 ac
3.84
11822 ft3
1773 ft3
3328 ft3
61 hrs
0.012 cfs
0.2 ft
0.005 ft2
1.00 in
Project: BMP 8 Wet Pond
Date: 6 -Jun -17
Post Development
Soils = Group C
CN = 98
CN = 74
CN = 70
CN = 85
Water Quality Volume
Water Quality Volume
638 to 641
0.67 ac
1.32 ac
0 ac
0.22 ac
Imperv. Total
Grass, good
Woods, good
Gravel

WP -8 Detention
Results Summary
Pre CN =
72
Post CN =
82
Pre Drainage Area =
1.63 ac
Post Drainage Area =
2.21 ac
Pre Tc =
16.5 min
Post 7c =
5 rein
2 yr 24 hr Storm
Max Stage = 642.44
Pre Dev Peak Flow = 1.65 cfs
Post Peak In -Flow = 6.64 cfs
Post Dev Routed Flow = 6.03 cfs
25 yr 24 hr Storm
Max Stage = 642.94
Pre Dev Peak Flow = 5.62 cfs
Post Peak In -Flow = 14.92 cfs
Post Dev Routed Flow = 3.73 cfs
50 yr 24 hr Storm
Max Stage = 643.11
Peak Routed Flow = 7.7 cfs
ok
ok
ok

WP -8 Type !! 24 -hr 2 -yr, 24 hr RarnfWI=3.12"
Prepared by HydroCAD SAMPLER 1-800-927-7246 www.hydrocad.net Printed 6/9/2017
H droCAD®10.00-16 Sam ler sfn S01551 0 2015 H droCAD Software Solutions LLC
This report was prepared with the free HydroCAD SAMPLER, which is licensed for evaluation and
educational use only. For actual design or modeling applications you must use a full version of HydroCAD
which may be purchased at www.hydrocad.net. Full programs also include complete documentation,
technicalsupport, training materials, and additional features which are essential for actual design work.
Summary for Subcatchment SS: PRE
Runoff = 1.65 cfs @ 12.10 hrs, Volume= 0.120 af, Depth= 0.88"
Runoff by SCS TR -20 method, UH=SCS, Weighted -CN, Time Span= 0.00-120.00 hrs, dt= 0.02 hrs
Type II 24 -hr 2 -yr, 24 hr Rainfall=3.12"
Area ac CN Description
* 0.000 74 Grass
* 1.410 70 Woods
* 0.220 85 Gravel off-site
1.630 72 Weighted Average
Tc Length Slope Velocity Capacity Description
min feet(ft/ft) (ft/sec) efs
14.5 100 0.0200 0.12 Sheet Flow,
Grass: Dense n= 0.240 P2= 3.12"
2.0 400 0.0450 3.42 Shallow Concentrated Flow,
Unpaved Kv= 16.1 fps
16.5 500 Total

WP -8 Type 1124 -hr
Prepared by HydroCAD SAMPLER 1-600-927-7246 www.hydrocad.net
HydroCAD® 10.00-16 Sampler stn S01551 02015 HydroCAD Software Solutions_!.
2 -yr, 24 hr Rainfall= 3.92"
Printed 619!2017
This report was prepared with the free HydroCAD SAMPLER, which is licensed for evaluation and
educational use only. For actual design or modeling applications you must use a full version of HydroCAD
which may be purchased at www.hydrocad.net. Full programs also include complete documentation,
technicalsupport, training materials, and additional features which are essential for actual design work.
Summary for Subcatchment 3S: POST
Runoff - 6.04 cfs @ 11.96 hrs, Volume= 0.271 af, Depth= 1.47"
Runoff by SCS TR -20 method, UH=SCS, Weighted -CN, Time Span= 0.00-120.00 hrs, dt= 0.02 hrs
Type 11 24 -hr 2 -yr, 24 hr Rainfall=3.12"
Area (ac) CN Description
* 0.670
98
Impervious
* 1.320
74
Crass, good
* 0.000
70
Woods, good
* 0.220
86
Gravel, off-site
2.210 82 Weighted Average
Tc Length Slope Velocity Capacity Description
(min) (feet) (ftift) (ftfsec) (cfs) -- -.-�
5.0 Direct Entry,

WP -8 Type 1124 -hr 2 -yr, 24 hr Rainfall=3.12"
Prepared by HydroCAD SAMPLER 1-800-927-7246 www.hydrocad.net Printed 6115/2017
HydroCADO 10.00-16 Sampler s/n_S01551 © 2015 HydroCAD Software Solutions LLC__
This report was prepared with the free HydroCAD SAMPLER, which is licensed for evaluation and
educational use only. For actual design or modeling applications you must use a full version of HydroCAD
which may be purchased at www.hydrocad.net. Full programs also include complete documentation,
technicalsupport, training materials, and additional features which are essential for actual design work.
Routing by Stor-Ind method, Time Span= 0.00-120.00 hrs, dt= 0.02 hrs
Starting Elev= 641.00' Surf.Area= 5,271 sf Storage= 15,286 of
Peale Elev= 642.44' @ 24.07 hrs Surf.Area= 8,316 sf Storage= 25,772 cf (10,487 cf above start)
Plug -Flow detention time= (not calculated: initial storage exceeds outflow)
Center -of -Mass det. time= 2,755.7 min ( 3,589.1 - 833.3 )
Volume Invert
Avail.Storage Storage Description
Summary for Pond 4P: Wet Pond 3
Inflow Area =
2.210 ac,
Inflow Depth = 1.47"
for 2 -yr, 24 hr event
Inflow -
6.04 cfs @
11.96 hrs, Volume=
0.271 of
Outflow -
0.03 cfs @
24.07 hrs, Volume=
0.221 af, Atten= 99%, Lag= 726.4 min
Primary -
0.03 cfs @
24.07 hrs, Volume=
0.221 of
Routing by Stor-Ind method, Time Span= 0.00-120.00 hrs, dt= 0.02 hrs
Starting Elev= 641.00' Surf.Area= 5,271 sf Storage= 15,286 of
Peale Elev= 642.44' @ 24.07 hrs Surf.Area= 8,316 sf Storage= 25,772 cf (10,487 cf above start)
Plug -Flow detention time= (not calculated: initial storage exceeds outflow)
Center -of -Mass det. time= 2,755.7 min ( 3,589.1 - 833.3 )
Volume Invert
Avail.Storage Storage Description
#1 636.00'
64,171 cf Custom Stage Data (Prismatic) Listed below
Elevation Surf.Area
Inc.Store Cum.Store
(feet}
(sq -ft)
(cubic -feet) (cubia-feet)
636.00
1,000
0 0
638.00
2,600
3,600 3,600
640.00
4,300
6,900 10,500
641.00
5,271
4,786 15,286
642.00
7,700
6,486 21,771
644.00
10,500
18,200 39,971
646.00
13,700
24,200 64,171
Device Routing
Invert
Outlet Devices_
#1 Primary
640.20'
18.0" Round Culvert
L= 40.0' RCP, square edge headwall, Ke= 0.500
Inlet/ Outlet Invert= 640.20'/640.00' S=0.0050'/' Cc= 0.900
n= 0.012, Flow Area= 1.77 sf
#2 Device 1
541.00'
1.0" Horiz. Orifice/Grate C= 0.600
#3 Device 1
642.50`
4.0` long Sharp -Crested Rectangular Weir 2 End Contraction(s)
#4 Device 1
643.00'
12.0' !sang Sharp -Crested Rectangular Weir 2 End Contraction(s)
Primary OutFlow Max=0.03 cfs @ 24.07 hrs HW=642.44' (Free Discharge)
't -!=Culvert (Passes 0.03 cfs of 9.43 cfs potential flow)
2=Orifice/Grate (Orifice Controls 0.03 cfs @ 5.78 fps)
3=Sha rp-C rested Rectangular Weir ( Controls 0.00 cfs)
=Sharp -Crested Rectangular Weir ( Controls 0.00 cfs)

WP -8 Type// 24 -hr 25 -yr, 24 hr Rainfall=5.76"
Prepared by HydroCAD SAMPLER 1-800-927-7246 www.hydrocad.net Printed 619/2017
H droCAD®10.00-16 Sampler stn S01551 © 2015 HydroCAD Software Solutions LLC
This report was prepared with the free HydroCAD SAMPLER, which is licensed for evaluation and
educational use only. For actual design or modeling applications you must use a full version of HydroCAD
which may be purchased at www,hydrocad.net. Full programs also include complete documentation,
technicalsupport, training materials, and additional features which are essential for actual design work.
Summary for Subcatchment SS: PRE
Runoff = 5.62 cfs @ 12.09 hrs, Volume= 0.380 af, Depth= 2.80"
Runoff by SCS TR -20 method, UH=SCS, Weighted -CN, Time Span= 0.00-120.00 hrs, dt= 0.02 hrs
Type 11 24 -hr 25 -yr, 24 hr Rainfall=5.76"
Area ac CN Description
* 0.000 74 Grass
* 1.410 70 Woods
* 0.220 85 Gravel, off-site
1.630 72 Weighted Average
Tc Length Slope Velocity Capacity Description
min feet Riftf tsec cfs
14.5 100 0.0200 0.12 Sheet Flow,
Grass: Dense n= 0.240 P2= 3.12"
2.0 400 0.0450 3.42 Shallow Concentrated Flow,
Unpaved Kv= 16.1 fps
16.5 500 Total

WP -8 Type 1124 -hr 25 -yr, 24 hr Rainfall=5.76"
Prepared by HydroCAD SAMPLER 1-800-927-7246 www.hydrocad.net Printed 6/9/2617
H droCAD@ 10.00-16 Sampler stn S01551 @ 2015 H droCAD Software Solutions LLC
This report was prepared with the free HydroCAD SAMPLER, which is licensed for evaluation and
educational use only. For actual design or modeling applications you must use a full version of HydroCAD
which may be purchased at www.hydrocad.net. Full programs also include complete documentation,
technicalsupport, training materials, and additional features which are essential for actual design work.
Summary for Subcatchrnent 3S: POST
Runoff - 14.92 cfs @ 11.96 hrs, Volume= 6.694 af, Depth= 3.77"
Runoff by SCS TR --20 method, UH =SCS, Weighted -CN, Time Span= 0.00-120.00 hrs, dt= 6.02 hrs
Type II 24 -hr 25 -yr, 24 hr Rainfall=5.76"
Area(ac) CN Description
* 0.670 98 Impervious
* 1.320 74 Grass, good
* 0.000 70 Woods, good
* 0.220 85 Gravel, off-site
2.210 82 Weighted Average
Tc Length Slope Velocity Capacity Description
min feet(ft/ft) ftlsec cfs
6.0 Direct Entry,

WP -8 Type 1124 -hr 25 -yr, 24 hr Rainfall=5.76"
Prepared by HydroCAD SAMPLER 1-800-927-7246 www.hydrocad.net Printed 6/15/2017
H droCAD®10.00-16 Sampler s/n 801551 @2015 HydroCAD Software Solutions LLC
This report was prepared with the free HydroCAD SAMPLER, which is licensed for evaluation and
educational use only. For actual design or modeling applications you must use a full version of HydroCAD
which may be purchased at www.hydrocad.net. Full programs also include complete documentation,
technicalsupport, training materials, and additional features which are essential for actual design work.
Routing by Stor-Ind method, Time Span= 0.00-120.00 hrs, dt= 0.02 hrs
Starting Elev= 641.00' Surf.Area= 5,271 sf Storage= 15,286 cf
Peak Elev= 642.94' @ 12.09 hrs Surf.Area= 9,010 sf Storage= 30,287 cf (15,002 cf above start)
Plug -Flow detention time= 2,481.2 min calculated for 0.285 of (41 % of inflow)
Center -of -Mass det. time= 1,062.9 min ( 1,869.5 - 806.5 )
Volume Invert
Avail.Stora a Storage Description
Summary for Pond 4P; Wet Pond 3
Inflow Area =
2.210 ac,
Inflow Depth = 3.77"
for 25 -yr, 24 hr event
Inflow =
14.92 cfs @
11.96 hrs, Volume=
0.694 of
Outflow -
3.73 cfs @
12.09 hrs, Volume=
0.636 af, Atten= 75%, Lag= 7.8 min
Primary =
3.73 cfs @
12.09 hrs, Volume=
0.636 of
Routing by Stor-Ind method, Time Span= 0.00-120.00 hrs, dt= 0.02 hrs
Starting Elev= 641.00' Surf.Area= 5,271 sf Storage= 15,286 cf
Peak Elev= 642.94' @ 12.09 hrs Surf.Area= 9,010 sf Storage= 30,287 cf (15,002 cf above start)
Plug -Flow detention time= 2,481.2 min calculated for 0.285 of (41 % of inflow)
Center -of -Mass det. time= 1,062.9 min ( 1,869.5 - 806.5 )
Volume Invert
Avail.Stora a Storage Description
#1 636.00'
64,171 cf Custom Stage Data (Prismatic) Listed below
Elevation Surf.Area
Inc.Store Cum.Store
feet
(sq -ft
cubic -feet cubic -feet
636.00
1,000
0 0
638.00
2,600
3,600 3,600
640.00
4,300
6,900 10,500
641.00
5,271
4,786 15,286
642.00
7,700
6,486 21,771
644.00
10,500
18,200 39,971
646.00
13,700
24,200 64,171
Device Routing
Invert
Outlet Devices
#1 Primary
640.20'
18.0" Round Culvert
L= 40.0' RCP, square edge headwall, Ke= 0.500
Inlet /Outlet Invert= 640.20'/640,00' S=0.0050? Cc= 0.900
n= 0.012, Flow Area= 1.77 sf
#2 Device 1
641.00'
1.0" Horiz. Orifice/Grate C= 0.600
#3 Device 1
642.50'
4.0" long Sharp -Crested Rectangular Weir 2 End Contraction(s)
#4 Device 1
643.00'
12.0` long Sharp -Crested Rectangular Weir 2 End Contraction(s)
Primary Outl=low Marc=3.70 cfs @ 12.09 hrs HW=642.93' (Free Discharge)
't--1 =Culvert (Passes 3.70 cfs of 11.66 cfs potential flow)
=Orifice/Grate (Orifice Controls 0.04 cfs @ 6.70 fps)
3=Sharp-Crested Rectangular Weir (Weir Controls 3.67 cfs @ 2.16 fps)
=Sharp -Crested Rectangular Weir ( Controls 0.00 cfs)

WP -8 Type 1124 -hr 50 yr, 24 hr Rainfaft 6.48 "
Prepared by HydroCAD SAMPLER 1-800-927-7246 www.hydrocad.net Printed 6/9/2017
H droCAD®10.00-16 Sampler sin 501551 © 2015 HydroCAD Software Solutions LLC
This report was prepared with the free HydroCAD SAMPLER, which is licensed for evaluation and
educational use only. For actual design or modeling applications you must use a full version of HydroCAD
which may be purchased at www.hydrocad.net. Full programs also include complete documentation,
technicalsupport, training materials, and additional features which are essential for actual design work.
Summary for Subcatchment 3S: POST
Runoff _ 17.40 cfs @ 11.96 hrs, Volume= 0.816 af, Depth= 4.43"
Runoff by SCS TR -20 method, UH=SCS, Weighted -CN, Time Span= 0.00-120.00 hrs, dt= 0.02 hrs
Type II 24 -hr 50 yr, 24 hr Rainfall=6.48"
Area ac CN Description
* 0.670 98 Impervious
* 1.320 74 Grass, good
* 0.000 70 Woods, good
* 0.220 85 Gravel, off-site
2.210 82 Weighted Average
Tc Length Slope Velocity Capacity Description
(min) (feet) (fttft) (ftisec) (cfs)
5.0 Direct Entry,

WP_8 Type 1124 -hr 50 yr, 24 hr Rainfall=6.48"
Prepared by HydroCAD SAMPLER 1-800-927-7246 www.hydrocad.net Printed 6/15/2017
HydroCAD®10 00-16 Sampler s/n S01551 @2015 HydroCAD Software Solutions LLC
This report was prepared with the free HydroCAD SAMPLER, which is licensed for evaluation and
educational use only. For actual design or modeling applications you must use a full version of HydroCAD
which may be purchased at www.hydrocad.net. Full programs also include complete documentation,
technicalsupport, training materials, and additional features which are essential for actual design work.
Routing by Stor-Ind method, Time Span= 0.00-120.00 hrs, dt= 0.02 hrs
Starting Elev= 641.00' Surf.Area= 5,271 sf Storage= 15,286 cf
Peak Elev= 643.11'@ 12.05 hrs Surf.Area= 9,260 sf Storage= 31,908 cf (16,623 cf above start)
Plug -Flow detention time= 1,825.2 min calculated for 0.407 of (50% of inflow)
Center -of -Mass det. time= 898.2 min ( 1,700.2 - 801.9 )
Volume Invert
Avail.Storace Storage Description
Summary for Pond 4P: Wet Pond 3
Inflow Area =
2.210 ac,
Inflow Depth = 4.43"
for 50 yr, 24 hr event
Inflow -
17.40 cfs @
11.96 hrs, Volume=
0.816 of
Outflow =
7.70 cfs @
12.05 hrs, Volume=
0.758 af, Atten= 56%, Lag= 5.6 min
Primary =
7.70 cfs @
12.05 hrs, Volume=
0.758 of
Routing by Stor-Ind method, Time Span= 0.00-120.00 hrs, dt= 0.02 hrs
Starting Elev= 641.00' Surf.Area= 5,271 sf Storage= 15,286 cf
Peak Elev= 643.11'@ 12.05 hrs Surf.Area= 9,260 sf Storage= 31,908 cf (16,623 cf above start)
Plug -Flow detention time= 1,825.2 min calculated for 0.407 of (50% of inflow)
Center -of -Mass det. time= 898.2 min ( 1,700.2 - 801.9 )
Volume Invert
Avail.Storace Storage Description
#1 636.00'
64,171 cf Custom Stage Data (Prismatic) Listed below
Elevation Surf.Area
Inc.Store Cum.Store
feet
s -ft
cubic-feet cubic -feel
636.00
1,000
0 0
638.00
2,600
3,600 3,600
640.00
4,300
6,900 10,500
641.00
5,271
4,786 15,286
642.00
7,700
6,486 21,771
644.00
10,500
18,200 39,971
646.00
13,700
24,200 64,171
Device Routing
Invert
Outlet Devvices___________
#1 Primary
640.20'
18.0" Round Culvert
L= 40.0' RCP, square edge headwall, Ke= 0.500
Inlet/ Outlet Invert= 640.20'/ 640.00' S= 0.0050'P Cc= 0.900
n= 0.012, Plow Area= 1.77 sf
#2 Device 1
641.00'
1.0" Horiz. Orifice/Grate C= 0.600
#3 Device 1
642.50'
4.0' long Sharp -Crested Rectangular Weir 2 End Contraction(s)
#4 Device 1
643.00'
12.0' long Sharp -Crested Rectangular Weir 2 End Contraction(s)
Primary OutFlow Max=7.58 cfs @ 12.05 hrs HW=643.11' (Free Discharge)
L1=Culvert (Passes 7.58 cfs of 12.36 cfs potential flow)
2=Orifice/Grate (Orifice Controls 0.04 cfs @ 7.00 fps)
3=Sharp-Crested Rectangular Weir (Weir Controls 6.07 cfs @ 2.56 fps)
=Sharp -Crested Rectangular Weir (Weir Controls 1.47 cfs @ 1.09 fps)

WET POND 1
WET POND 2
Anti -f=loatation Calulations
Anti -Floatation Calulations
Bouyancy:
Bouyancy:
Assume total soil saturation.
Assume total soil saturation.
Box Width (ft)
5
Box Width (ft)
5
Box Length (ft)
5
Box Length (ft)
5
Box Height (ft)
2.6
Box Height (ft)
4.17
Vol. Water Displaced Riser+ Concrete (cf) =
65
Vol. Water Displaced Risers Concrete (cf) =
104
Buoyant force (lbs) =
4056
Buoyant force (lbs) =
6505
Counter Bouyancy:
Counter Bouyancy:
Unit Wt. Concrete (lbs/cf) =
150
Unit Wt. Concrete (lbs/cf) =
150
Surface Area of Concrete
87.8
Surface Area of Concrete
104.0
Depth Concrete (ft) =
0.5
Depth Concrete (ft) =
0.5
Vol. Concrete (cf) =
44
Vol. Concrete (cf) =
52
Anti Floatation (Ibs) =
6585
Anti Floatation (lbs) =
7800
Safety Factor =
1.6
Safety Factor =
1.2
WET POND 3
WET POND 4
Anti -Floatation Calulations
Anti -Floatation Calulations
Bouyancy:
Bouyancy:
Assume total soil saturation.
Assume total soil saturation.
Box Width (ft)
5
Box Width (ft)
5
Box Length (ft)
5
Box Length (ft)
5
Box Height (ft)
1.5
Box Height (ft)
5.2
Vol. Water Displaced Riser+ Concrete (cf) =
38
Vol. Water Displaced Riser+ Concrete (cf) =
130
Buoyant force (lbs) =
2340
Buoyant force (lbs) =
8112
Counter Bouyancy:
Counter Bouyancy:
Unit Wt. Concrete (Ibs1cf) =
150
Unit Wt_ Concrete (lbs/cf) =
150
Surface Area of Concrete
90.5
Surface Area of Concrete
125.0
Depth Concrete (ft) =
0.5
Depth Concrete (ft) =
0.5
Vol. Concrete (cf) =
45
Vol. Concrete (cf) =
63
Anti Floatation (lbs) =
6788
Anti Floatation (lbs) =
9375
Safety Factor =
2.9
Safety f=actor =
12

WET POND 5
WET POND 7
Anti -Floatation Calulations
Anti -Floatation Calulations
Bouyancy:
Bouyancy:
Assume total soil saturation.
Assume total soil saturation.
Box Width (ft)
5
Box Width (ft)
5
Box Length (ft)
5
Box Length (ft)
5
Box Height (ft)
4.2
Box Height (ft)
6.9
Vol. Water Displaced Riser+ Concrete (cf) =
105
Vol. Water Displaced Riser+ Concrete (cf) =
173
Buoyant force (lbs) =
6552
Buoyant force (lbs) =
10764
Counter Bouyancy:
Counter Bouyancy:
Unit Wt. Concrete (lbs/cf) =
150
Unit Wt. Concrete (lbs/cf) =
150
Surface Area of Concrete
109.0
Surface Area of Concrete
156.0
Depth Concrete (ft) =
0.5
Depth Concrete (ft) =
0.5
Vol. Concrete (cf) =
55
Vol. Concrete (cf) =
78
Anti Floatation (lbs) =
8175
Anti Floatation (lbs) =
11700
Safety Factor =
1.2
Safety Factor =
1.1
WET POND 8
BASIN X
Anti -Floatation Calulations
Anti -Floatation Calulations
Bouyancy:
Bouyancy:
Assume total soil saturation.
Assume total soil saturation.
Box Width (ft)
5
Box Width (ft)
0
Box Length (ft)
5
Box Length (ft)
0
Box Height (ft)
3.3
Box Height (ft)
0
Vol. Water Displaced Riser+ Concrete (cf) =
83
Vol. Water Displaced Riser+ Concrete (cf) =
0
Buoyant force (lbs) =
5148
Buoyant force (lbs) =
0
Counter Bouyancy:
Counter Bouyancy:
Unit Wt. Concrete (lbs/cf) =
150
Unit Wt. Concrete (Ibslcf) =
150
Surface Area of Concrete
97.0
Surface Area of Concrete
0.0
Depth Concrete (ft) =
0.5
Depth Concrete (ft) =
0.5
Vol_ Concrete (cf) =
49
Vol. Concrete (cf) =
0
Anti Floatation (Ibs) =
7275
Anti Floatation (lbs) =
0
Safety Factor =
1 A
Safety Factor =
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