SW6220802_Design Calculations_20230217 (4)

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2 P Champs -Post Dev.
Champs - Post Dev.
Pond
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Routing Diagram for Champs - Post Dev. Thru Storage
Prepared by (enter your company name here}, Printed 11/9/2022
HydroCAD®10.00-18 sin 05976 © 2016 HydroCAD Software Solutions LLC

Champs Convenience Store- Post Dev. Thru Storage
Champs - Post Dev. Thru Storage
Prepared by {enter your company name here} Printed 11/9/2022
H droCAD®10.00-18 sln 05976 ©2016 H droCAD Software Solutions LLC Page 2
Pipe Listing (all nodes)
Line# Node In -Invert Out -Invert Length Slope n Diam/Width Height Inside -Fill
Number (feet) (feet) (feet) (ftlft) (inches) (inches) (inches)
1 2P 328.00 322.00 24.0 0.2600 0.015 15.0 0.0 0.0

Champs Convenience Store- Post Dev. Thru Storage
Champs - Post Dev. Thru Storage Type 1124-hr 1 year storm Rainfall=2.92"
Prepared by {enter your company name here} Printed 11/9/2022
HydroCAD®10.00-18 s/n 05976 @ 2016 HydroCAD Software Solutions LLC Page 3
Summary for Subcatchment 1S: Champs - Post Dev.
Runoff - 4.33 cfs @ 12.14 hrs, Volume= 0.341 af, Depth> 2.04"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 1.00-23.00 hrs, dt= 0.05 hrs
Type II 24-hr 1 year storm Rainfall=2.92"
Area (ac) CN Description
1.660
98 Paved parking, HSG B
0.340
61 >75% Grass cover, Good, HSG B
2.000
92 Weighted Average
0.340
17.00% Pervious Area
1.660
83.00% Impervious Area
Tc Length Slope Velocity Capacity Description
(mire) (feet) (ft/ft) (ft/sec) (cfs)
21.8 Direct Entry, Post developed Travel Time
0
U-
Subcatchment 1S: Champs - Post Dev.
Hydrograph
0 Runoff
Type 1124-h r
1 year storm Rainfall= 2.92"
Runoff Area=2.000 ac
Runoff Volume=0.341 of
Runoff Depth>2.04"
i 1
Tc=21.8 min
CN=92
II i
i
i
� a i
i
5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
Time (hours)

Champs Convenience Store- Post Dev. Thru Storage
Champs - Post Dev. Thru Storage Type 1124-hr 9 year storm Rainfall=2. 92"
Prepared by {enter your company name here} Printed 11/9/2022
HydroCAD® 10.00-18 sin 05976 02016 HydroCAD Software Solutions LLC Page 4
Summary for Pond 2P: Champs - Post Dev. Pond
Inflow Area = 2.000 ac, 83.00% Impervious, Inflow Depth > 2.04" for 1 year storm event
Inflow -
4.33 cfs @
12.14 hrs,
Volume=
0.341 of
Outflow =
0.15 cfs @
15.78 hrs,
Volume=
0.141 af, Atten= 97%, Lag= 218.4 min
Discarded =
0.06 cfs @
10.55 hrs,
Volume=
0,074 of
Primary =
0.09 cfs @
15.78 hrs,
Volume=
0.067 of
Routing by Stor-Ind method, Time Span= 1.00-23.00 hrs, dt= 0,05 hrs
Peak Elev= 331.14' @ 15.78 hrs Surf.Area= 0 sf Storage= 9,918 cf
Plug -Flow detention time= 302.3 min calculated for 0.140 of (41% of inflow)
Center -of -Mass det. time= 192.0 min ( 992.5 - 800.5 )
Volume Invert Avail.Storage Storage Description
#1 328.00' 18,975 cf Custom Stage Data Listed below
Elevation Cum.Store
(feet)
(cubic -feet)
328.00
0
328.08
153
328.42
763
328.75
1,373
328.83
1,684
329.25
3,227
329.67
4,754
330.08
6,258
330.50
7,734
330.92
9,177
331.33
10,577
331.75
11,928
332.17
13,218
332.58
14,433
333.00
15,549
333.42
16,501
333.83
17,297
334.25
18,060
334.67
18,823
334.75
18,975
Device Routing Invert Outlet Devices
#1
Primary
328.00'
15.0" Round RCP -Round 15"
L= 24.0' RCP, sq.cut end projecting, Ke= 0.500
Inlet/ Outlet Invert= 328.00'/ 322.00' S= 0.2500'1' Cc= 0.900
n= 0.015 Concrete sewer wlmanholes & inlets, Flow Area= 1.23 sf
#2
Device 1
334.00'
Custom Weir/Orifice, Cv= 2.62 (C= 3.28)
Head (feet) 0.00 3.00
Width (feet) 4.00 4.00
#3
Device 1
330.37'
2.0" Vert. Orifice/Grate C= 0.600
#4
Discarded
328.00'
0.06 cfs Exfiltration at all elevations Phase -In= 0,10'

Champs Convenience Store- Post Dev. Thru Storage
Champs - Post Dev. Thru Storage Type 1124-hr 9 year storm Rainfall=2.92"
Prepared by {enter your company name here} Printed 11/9/2022
H droCAD®10.00-18 sin 05976 C 2016 H droCAD Software Solutions LLC Page 5
Discarded OutFlow Max=0.06 cfs @ 10.55 hrs HW=328.18' (Free Discharge)
L4=Exfiitration (Exfiitration Controls 0.06 cfs)
Primary OutFlow Max=0.09 cfs @ 15.78 hrs HW=331.14' (Free Discharge)
t-1=RCP_Round 15" (Passes 0.09 cfs of 9.37 cfs potential flow)
1:3=Orifice/G
2=Custom Weir/Orifice ( Controls 0.00 cfs)
rate (Orifice Controls 0.09 cfs @ 3.98 fps)
Pond 2P: Champs - Post Dev. Pond
Hydrograph
M
5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
Time (hours)

Champs Convenience Store- Post Dev. Thru Storage
Champs - Post Dev. Thru Storage Type 1124-hr 2 year storm Rainfall=3.53"
Prepared by {enter your company name here} Printed 11/912022
HydroCADO 1 D 00-18 sln 05976 02016 HydroCAD Software Solutions LLC Page 6
Summary for Subcatchment 1S: Champs - Post Dev.
Runoff = 5.48 cfs @ 12.14 hrs, Volume= 0.436 af, Depths 2.62"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 1.00-23.00 hrs, dt= 0.05 hrs
Type II 24-hr 2 year storm Rainfall=3.53"
Area fac) CN Description
1.660
98 Paved parking, HSG B
0.340
61 >75% Grass cover, Good, HSG B
2.000
92 Weighted Average
0.340
17.00% Pervious Area
1.660
83.00% Impervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ftlsec) cfs) _
21.8 Direct Entry, Post developed Travel Time
Subcatchment 1S: Champs - Post Dev.
Hydrograph
❑ Runoff
4-
3-
0
LL _
Type 1124. hr.-
2 year storm Rainfall=3.53"
Runoff Area=2000 ac
Runoff Volume=0.436 of
Runoff Depth>2.62'"
j Tc=21.8 rein
CN=92
I
i
5 6 7 8 9 10 11 12 13 14 15 10 17 18 19 20
Time (hours)

Champs Convenience Store- Post Dev. Thru Storage
Champs - Post Dev. Thru Storage Type 1124-hr 2 year storm Rainfall=3.53"
Prepared by {enter your company name here} Printed 11/9/2022
HydroCAD010.00-18 s/n 05976 02016 HydroCAD Software Solutions LLC Page 7
Summary for Pond 2P: Champs - Post Dev. Pond
Inflow Area = 2.000 ac, 83.00% Impervious, Inflow Depth > 2.62" for 2 year storm event
Inflow = 5.48 cfs @ 12.14 hrs, Volume= 0.436 of
Outflow - 0.19 cfs @ 15.58 hrs, Volume= 0.185 af, Atten= 97%, Lag= 206.1 min
Discarded = 0.06 cfs @ 9.70 hrs, Volume= 0.078 of
Primary = 0.13 cfs @ 15.58 hrs, Volume= 0.107 of
Routing by Stor-Ind method, Time Span= 1.00-23.00 hrs, dt= 0.05 hrs
Peak Elev= 332.00' @ 15.58 hrs Surf.Area= 0 sf Storage= 12,705 cf
Plug -Flow detention time= 308.8 min calculated for 0.185 of (43% of inflow)
Center -of -Mass det. time= 197.4 min ( 991.3 - 793.9 )
Volume Invert Avail .StorageStorage Description,
#1 328.00' 18,975 cf Custom Stage Data Listed below
Elevation Cum.Store
(feet) _
cubic -feet)
328.00
0
328.08
153
328.42
763
328.75
1,373
328.83
1,684
329.25
3,227
329.67
4,754
330.08
6,258
330.50
7,734
330.92
9,177
331.33
10,577
331.75
11,928
332.17
13,218
332.58
14,433
333.00
15,549
333.42
16,501
333.83
17,297
334.25
18,060
334.67
18,823
334.75
18,975
Device
Routing
Invert
Outlet Devices _
#1
Primary
328.00'
15.0" Round RCP -Round 15"
L= 24.0' RCP, sq.cut end projecting, Ke= 0.500
Inlet / Outlet Invert= 328.00' / 322.00' S= 0.2500 '1' Cc= 0.900
n= 0.015 Concrete sewer w/manholes & inlets, Flow Area= 1.23 sf
#2
Device 1
334.00'
Custom Weir/Orifice, Cv= 2.62 (C= 3.28)
Head (feet) 0.00 3.00
Width (feet) 4.00 4.00
#3
Device 1
330.37'
2.0" Vert. Orifice/Grate C= 0.600
#4
Discarded
328.00'
0.06 cfs Exfiltration at all elevations Phase -In= 0.10'

Champs Convenience Store- Post Dev. Thru Storage
Champs - Post Dev, Thru Storage Type 1124-hr 2 year storm Rainfall=3.53"
Prepared by {enter your company name here} Printed 11/9/2022
M drOCAM 10.00-18 sln 05976 © 2016 HydroCAD Software Solutions LLC Page 8
Discarded OuMow Max=0.06 cfs @ 9.70 hrs HW=328.18' (Free Discharge)
L4=Exfiltration (F.xfiltration Controls 0.06 cfs)
Primary OutFlow Max=0.13 cfs @ 15.58 hrs HW=332.00' (Free Discharge)
't-1=RCP_Round 15" (Passes 0.13 cfs of 10.86 cfs potential flow)
T--2=Custom Weir/Orifice ( Controls 0.00 cfs)
3=Orifice/Grate (Orifice Controls 0.13 cfs @ 5.99 fps)
Pond 2P: Champs - Post Dev. Pond
Hydrograph
C3 Inflow
s.aects - Outflow
© Discarded
-
---- -Inflow Area=2.000-ac ElPrimary
6-
Peak Elev=332.00'
125Cf
5- St , 7
-St..
0
4 j
II
3-
U.
o
2- j
i7 0.19
5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
Time (hours)

Champs Convenience Store- Post Dev. Thru Storage
Champs - Post Dev. Thru Storage Type 1124-hr 90 year storm Rainfal1=5.18"
Prepared by {enter your company name here) Printed 11/9/2022
HydroCAD®10.00-18 sin 05976 © 2016 HydroCAD Software Solutions LLC Page 9
Summary for Subcatchment 1S: Champs - Post Dev.
Runoff = 8.58 cfs @ 12.14 hrs, Volume= 0.698 af, Depths 4.19"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 1.00-23.00 hrs, dt= 0.05 hrs
Type II 24-hr 10 year storm Rainfall=5.18"
Area (ac) CN Description
1.660
98 Paved parking, HSG 8
0.340
61 >75% Grass cover, Good, HSG B
2.000
92 Weighted Average
0.340
17.00% Pervious Area
1.660
83.00% Impervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ftlsec) (cfs)
21.8 Direct Entry, Post developed Travel Time
Subcatchment'IS: Champs - Post Dev.
Hydrograph
CJ_
I
i
� F
0
ii
4
i
F
10 11 12 13 14 15 16 17 18 19 20
Time (hours)

Champs Convenience Store- Post Dev. Thru Storage
Champs - Post Dev. Thru Storage Type It 24-hr 10 year storm Rainfall=5.18"
Prepared by {enter your company name here} Printed 11/912022
HydroCAD® 10 00-18 s/n 05976 02016 HydroCAD Software Solutions LLC Page 10
Summary for Pond 2P: Champs - Post Dev. Pond
Inflow Area = 2.000 ac, 83.00% Impervious, Inflow Depth > 4.19" for 10 year storm event
Inflow = 8.58 cfs @ 12.14 hrs, Volume= 0.698 of
Outflow - 1.61 cfs @ 12.67 hrs, Volume= 0.341 af, Atten= 81 %, Lag= 32.0 min
Discarded = 0.06 cfs @ 7.70 hrs, Volume= U87 of
Primary = 1.55 cfs @ 12.67 hrs, Volume= 0.254 of
Routing by Stor-Ind method, Time Span= 1.00-23.00 hrs, dt= 0.05 hrs
Peak Elev= 334.22' @ 12.67 hrs Surf.Area= 0 sf Storage= 18,004 cf
Plug -Flow detention time= 261.8 min calculated for 0.340 of (49% of inflow)
Center -of -Mass det. time= 155.1 min ( 936.7 - 781.6)
Volume Invert Avail Stora a Storage Description
#1 328.00' 18,975 cf Custom Stage Data Listed below
Elevation Cum.Store
feet
cubic -feet
328.00
0
328.08
153
328.42
763
328.75
1,373
328.83
1,684
329.25
3,227
329.67
4,754
330.08
6,258
330.50
7,734
330.92
9,177
331.33
10,577
331.75
11,928
332.17
13,218
332.58
14,433
333.00
15,549
333.42
16,501
333.83
17,297
334.25
18,060
334.67
18,823
334.75
18,975
Device
Routing
Invert
Outlet Devices
#1
Primary
328.00'
15.0" Round RCP -Round 15"
L= 24.0' RCP, sq.cut end projecting, Ke= 0.500
Inlet/ Outlet Invert= 328.00' / 322.00' S= 0.2500 T Cc= 0.900
n= 0.015 Concrete sewer wlmanhoies & inlets, Fiow Area= 1.23 sf
#2
Device 1
334.00'
Custom Weir/Orifice, Cv= 2.62 (C= 3.28)
Head (feet) 0.00 3.00
Width (feet) 4.00 4.00
#3
Device 1
330.37'
2.0" Vert. Orifice/Grate C= 0.600
#;F4
Discarded
328.00'
0.06 cfs Exfiltration at all elevations Phase-]n= 0.10'

Champs Convenience Store- Post Dev. Thru Storage
Champs - Post Dev. Thru Storage Type // 24-hr 10 year storm Rainfall=5.18'r
Prepared by {enter your company name here} Printed 11/9/2022
H droCAfl® 10.00-18 s/n 05976 02016 H droCAD Software Solutions LLC Page 11
Discarded OutFlow Max=0.06 cfs @ 7.70 hrs HW=328.18' (Free Discharge)
L4=Exfiltration (Exfiltration Controls 0.06 cfs)
Primary OutFlow Max=1.51 cfs @ 12.67 hrs HW=334.22' (Free Discharge)
t-1=RCP Round 15" (Passes 1.51 cfs of 13.97 cfs potential flow)
�Cu 2=stom Weir/Orifice (Weir Controls 1.31 cfs @ 1.52 fps)
3=Orifice/Grate (Orifice Controls 0.20 cfs @ 9.34 fps)
0
3
a
LL
Pond 2P: Champs - Post Dev. Pond
Hydrograph
5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
Time (hours)
ad

Champs Convenience Store- Post Dev, Thru Storage
Champs - Post Dev. Thru Storage Type 1124-hr 25 year storm Rainfall=6.18"
Prepared by {enter your company name here} Printed 11/9/2022
HydroCAD010.00-1.8 sln 05976 02016 H droCAD Software Solutions I,LC Page 12
Summary for Subcatchment IS: Champs - Post Dev.
Runoff -- 10.43 cis @ 12.14 hrs, Volume= 0.859 af, Depth> 5.16"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 1.00-23.00 hrs, dt= 0.05 hrs
Type II 24-hr 25 year storm Rainfall=6.18"
Area (ac) CN Description —
1.660 98 Paved parking, HSG B
0.340 61 >75% Grass cover, Good, HSG B
2.000 92 Weighted Average
0.340 17.00% Pervious Area
1.660 83.00% Impervious Area
Tc Length Slope Velocity Capacity Description
min feet fi/ft (ft/sec) (cfs) _-
21 8 Direct Entry, Post developed Travel Time
2
4
tL 5
E
Subcatchment 1S: Champs - Post Dev.
Hydrograph
__ i] Runoff
043afs
- Trine 11 24
_hr .
5 7....8. 9,...0.._,
90 11 12 13 14 15 16 17 48 19 24
Time (hours)

Champs Convenience Store- Post Dev. Thru Storage
Champs - Post Dev. Thru Storage Type 1124-hr 25 year storm Rainfall=6. 18"
Prepared by {enter your company name here} Printed 11/9/2022
H droCAD®10.00-18 sin 05976 ©2016 M droCAD Software Solutions LLC Page 13
Summary for Pond 2P: Champs - Post Dev. Pond
Inflow Area = 2.000 ac, 83.00% Impervious, Inflow Depth > 5.16" for 25 year storm event
Inflow =
10.43 cfs @
12.14 hrs,
Volume
0.859 of
Outflow =
5.83 cfs @
12.36 hrs,
Volume=
0.488 af, Atten= 44%, Lag= 13.5 min
Discarded =
0.06 cfs @
6.70 hrs,
Volume=
0,091 of
Primary =
5.77 cfs @
12.36 hrs,
Volume=
0.397 of
Routing by Stor-Ind method, Time Span= 1.00-23.00 hrs, dt= 0.05 hrs
Peals Elev= 334.56' @ 12.36 hrs Surf.Area= 0 sf Storage= 18,632 cf
Plug -Flow detention time= 207.7 min calculated for 0.487 of (57% of inflow)
Center -of -Mass det. time= 109.0 min ( 885.3 - 776.4 )
Volume Invert Avail.Stora_ge___Storage Description
#1 328.00' 18,975 cf Custom Stage Data Listed below
Elevation Cum -Store
feet
cubic -feet
328.00
0
328.08
153
328.42
763
328.75
1,373
328.83
1,684
329.25
3,227
329.67
4,754
330.08
6,258
330.50
7,734
330.92
9,177
331.33
10,577
331.75
11,928
332.17
13,218
332,58
14,433
333.00
15,549
333.42
16,501
333.83
17,297
334.25
18,060
334.67
18,823
334.75
18,975
Device Routina Invert Outlet Devices
#1
Primary
328.00'
16.0" Round RCP -Round 15"
L= 24.0' RCP, sq.cut end projecting, Ke= 0.500
Inlet/ Outlet Invert= 328.00'/ 322.00' S= 0.2500 T Cc= 0.900
n= 0.015 Concrete sewer wlmanholes & inlets, Flow Area= 1.23 sf
#2
Device 1
334.00'
Custom Weir/Orifice, Cv= 2.62 (C= 3.28)
Head (feet) 0.00 3.00
Width (feet) 4.00 4.00
#3
Device 1
330.37'
2.0" Vert. Orifice/Grate C= 0.600
#4
Discarded
328.00'
0.06 cfs Exfiltration at all elevations Phase -In= 0.10'

Champs Convenience Store- Post Dev. Thru Storage
Champs - Post Dev. Thru Storage Type 1124-hr 25 year storm Rainfall=6.18"
Prepared by {enter your company name here} Printed 11/912022
HydroCAD@ 10 00-18 s/n 05976 02016 HydroCAD Software Solutions LLC _ Page 14
Discarded OutFlow Max=0.06 cfs @ 6.70 hrs HW=328.18' (Free Discharge)
t-4=Exfiltration (Exfiltration Controls 0.06 cfs)
Primary OutFlow Max=5.53 cfs @ 12.36 hrs HW=334.55' (Free Discharge)
t___1=RCP_Round 15" (Passes 5.53 cfs of 14.38 cfs potential flow)
�--3=Orif
2=Custom WeirlOrifice (Weir Controls 5.31 cfs @ 2.42 fps)
icelGrate (Orifice Controls 0.21 cfs @ 9.74 fps)
Pond 2P: Champs - Post Dev. Pond
Hyd rog ra p h
_.
10-
- -
E
- 7-
6_
i
i 3
4=
r
i
3 -
. ----
- -_ -
1
Inflow Area=2.000 ac
Peak Eley 334.56'
Stor' age=18,632 cf
5 6 7 8,. 9 10
11 12 13 14 15 16 17 18 19
Time (hours)
M

Champs Convenience Store- Post Dev. Thru Storage
Champs - Post Dev. Thru Storage Type 1124-hr 100 year storm Rainfall=7.81"
Prepared by {enter your company name here} Printed 11/9/2022
H droCAD® 10.00-18 s/n 05976 © 2016 H droCAD Software Solutions LLC Page 15
Summary for Subcatchment 1S: Champs - Post Dev.
Runoff - 13.44 cfs @ 12.14 hrs, Volume= 1.123 af, Depth> 6.74"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 1.00-23.00 hrs, dt= 0.05 hrs
Type 11 24-hr 100 year storm Rainfall=7.81"
Area (ac) CN Description
1.660
98 Paved parking, HSG B
0.340
61 >75% Grass cover, Good, HSG B
2.000
92 Weighted Average
0.340
17.00% Pervious Area
1.660
83.00% Impervious Area
Tc Length Slope Velocity Capacity Description
in) (feet) (ft/ft) (ft/sec) (cfs)
21.8
E
Direct Entry, Post developed Travel Time
Subcatchment IS: Champs - Post Dev.
Hydrograph
r
i
i
' I
i
4dS
5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
Time (hours)
fl rtunoff

Champs Convenience Store- Post Dev. Thru Storage
Champs - Post Dev. Thru Storage Type /I 24-hr 100 year storm Rainfall=7.81 "
Prepared by {enter your company name here} Printed 11/9/2022
HydroCAD®10.00-18 sin 05976 OO 2016 HydroCAD Software Solutions LLC Pape 16
Summary for Pond 2P. Champs - Post Dev. Pond
[93] Warning: Storage range exceeded by 1.43'
[88] Warning: Qout>Qin may require smaller dt or Finer Routing
Inflow Area =
2.000 ac, 83.00% Impervious, Inflow Depth > 6.74" for 100 year storm event
Inflow -
13.44 cfs @ 12.14 hrs, Volume= 1.123 of
Outflow =
16.32 cfs @ 12.20 hrs, Volume= 0.736 af, Atten= 0%, Lag= 4.0 min
Discarded =
0.06 cfs @ 5.55 hrs, Volume= 0.095 of
Primary =
16.26 cfs @ 12.20 hrs, Volume= 0.640 of
Routing by Stor-Ind
method, Time Span= 1.00-23.00 hrs, dt= 0.05 hrs
Peak Elev= 336.18' @ 12.20 hrs Surf.Area= 0 sf Storage= 18,975 cf
Plug -Flow detention
time= 166.6 min calculated for 0.736 of (65% of inflow)
Center -of -Mass det. time= 75.4 min ( 845.3 - 769.9 )
Volume Invert Avail.Stora a Storage Description
#1 328.00'
18,975 cf Custom Stage Data Listed below
Elevation
Cum.Store
feet
cubic -feet
328.00
0
328.08
153
328.42
763
328.75
1,373
328.83
1,684
329.25
3,227
329.67
4,754
330.08
6,258
330,50
7,734
330.92
9,177
331.33
10,577
331.75
11,928
332.17
13,218
332.58
14,433
333.00
15,549
333.42
16,501
333.83
17,297
334.25
18,060
334.67
18,823
334.75
18,975
Device Routing
Invert Outlet Devices
#1 Primary
328.00' 15.0" Round RCP -Round 16"
L= 24.0' RCP, sq.cut end projecting, Ke= 0.500
Inlet 1 Outlet Invert= 328.00' 1322.00' S= 0.2500'1' Cc= 0.900
n= 0.015 Concrete sewer wlmanholes & inlets, Flow Area= 1.23 sf
#2 Device 1 334.00' Custom Weir/Orifice, Cv= 2.62 (C= 3.28)
Head (feet) 0.00 3.00

Champs Convenience Store- Post Dev. Thru Storage
Champs - Post Dev. Thru Storage Type 1124-hr 100 year storm Rainfall=7. 81 "
Prepared by {enter your company name here} Printed 11/9/2022
HydroCAD8 10.00-18 sin 05976 02016 HydroCAD Software Solutions LLC Page 17
Width (feet) 4.00 4.00
#3 Device 1 330.37' 2.0" Vert. Orifice/Grate C= 0.600
#4 Discarded 328.00' 0.06 cfs Exfiltration at all elevations Phase -In= 0.10'
Discarded OutFlow Max=0.06 cfs @ 5.55 hrs HW=328.19' (Free Discharge)
t-4=Exfiltration (Exfiltration Controls 0.06 cfs)
Primary OutFlow Max=16.16 cfs @ 12.20 hrs HW=336.10' (Free Discharge)
t-=RCP_Round 15'" (inlet Controls 16.16 cfs. @ 13.16 fps)
r2=Custom Weir/Orifice (Passes < 39.88 cfs potential flow)
3 Orifice]Grate (Passes a 0.25 cfs potential flow)
Pond 2P: Champs - Post Dev. Pond
M
17=
16
14`
13-
12
11=
m
� 10
3 9.
o -
LL 8.
7-
6
5-
4-
3.
2- c.QB cf.
1-
5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
Time (hours)