SW6220802_Design Calculations_20230217 (2)

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Champs - Pre Dev.
Bobcat Reach Pan Unk

Champs Convenience Store- Pre. Development
Champs - Pre Dev. Type Il 24-hr 1 year storm Rainfall=2.92°
Prepared by {enter your company name here} Printed 11/5/2022
HydroCAD® 10.00-18 s/n 05976 02016 HydroCAD Software Solutions LLC Page 2
Summary for Subcatchment'IS: Champs - Pre Dev.
Runoff = 1.15 cfs @ 12.37 hrs, Volume= 0.140 af, Depths 0.47"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs
Type II 24-hr 1 year storm Rainfall=2.92"
_ Area (ac) CN Description _
3.460 66 Woods, Poor, HSG B
0.110 98 Paved parking, HSG 8 _
3.570 67 Weighted Average
3,460 96.92% Pervious Area
0.110 3.08% Impervious Area
Tc Length Slope Velocity Capacity Description
_ (min) (feet) (ft/ft) ft/sec) (cfs)
35.0 Direct Entry, Pre-dev.
U
0
LL
Subcatchment IS: Champs - Pre Dev.
Hydrograph
Type II 24'-hr
1 year storm Rainfall=2.92
Runoff Area=3570 ac
Runoff Vol ume=0.140 of
Runoff Depth>0.47"
Tc=35.0 min
CN=67
i
5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
Time (hours)
❑ Runoff

Champs Convenience Store- Pre.Development
Champs - Pre Dev. Type I124-hr 2 year storm Rainfall=3.53"
Prepared by {enter your company name here} Printed 11/5/2022
H droCAD®10.00-18 s/n 05976 02016 H droCAD Software Solutions LLC Page 3
Summary for Subcatchment 1S: Champs - Pre Dev.
Runoff - 2.06 cfs @ 12.35 hrs, Volume= 0.226 af, Depth> 0.76"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs
Type 11 24-hr 2 year storm Rainfall=3.53"
Area (ac) CN Description
3.460
66 Woods, Poor, HSG B
0.110
98 Paved parking, HSG B
3.570
67 Weighted Average
3.460
96.92% Pervious Area
0.110
3.08% Impervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ftlsec) (cis)
35.0 Direct Entry, Pre-dev.
O
LL
Subcatchment 1S: Champs - Pre Dev.
Hydrograph
Type li 24-hr
2 year storm Rainfall= 3.53"
Runoff Area=3:570 ac
Runoff Volume=0.226. of
Runoff Depth>0.76"
- Tc=35.0.min
I
CN=67
5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
Time (hours)
C7 Runoff

Champs Convenience Store Pre.Development
Champs - Pre Dev. Type Il 24-hr 10 year storm Rainfall= 5.18"
Prepared by {enter your company name here} Printed 11/5/2022
HydroCAD®10.00-18 s/n 05976 02016 HydroCAD Software Solutions LLC Page 4
Summary for Subcatchment 1S: Champs - Pre Dev.
Runoff = 5.14 cfs @ 12.32 hrs, Volume= 0.515 af, Depths 1.73"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0,05 hrs
Type II 24-hr 10 year storm Rainfall=5.18"
Area ac CN Description
3.460 66 Woods, Poor, HSG B
0.110 98 Paved parking, HSG B
3.570 67 Weighted Average
3.460 96.92% Pervious Area
0.110 3.08% Impervious Area
Tc Length Slope Velocity Capacity Description
(min)(feet) (ftlft) (ft/sec) (cfs) _----._----
35.0 Direct Entry, Pre-dev.
4
2-
Subcatchment 1 S: Champs - Pre Dev.
Hydrograph
cis
Type [I 24-hr
10 year storm Rainfall=5.18"
Runoff Area=3.570: ac
Runoff Volume=0.515 of
Runoff Depth>1.73"
Tc=36.0 min
CN=67
i
II
5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
Time (hours)
❑ Runoff

Cramps Convenience Store- Pre.Development
Champs - Pre Dev. Type !l 24-hr 25 year Rainfall=6.18"
Prepared by (enter your company name here} Printed 1115l2022
H droCAD®10.00-18 sln 05976 02016 W droCAD Software Solutions LLC Page 5
Summary for Subcatchment 1S: Champs - Pre Dev.
Runoff = 7.27 cfs @ 12.32 hrs, Volume= 0.717 af, Depths 2.41"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0,05 hrs
Type II 24-hr 25 year Rainfall=6.18"
Area (ac) CN Description
3.460 66 Woods, Poor, HSG B
0.110 98 Paved parking, HSG B
3.570 67 Weighted Average
3.460 96.92% Pervious Area
0.110 3.08% Impervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) ftlft) (ft/sec) (cfs)
35.0 Direct Entry, Pre-dev.
Subcatchment 1S: Champs - Pre Dev.
Hydrograph
■
17
3 4
0
3�
2-
1-
....... — . .
Type 11 24-hr
.25 year Rainfall=6.18'
Runoff Area=3.570 ac
Runoff Volume=0.717 of
Runoff Depth>2.41"
Tc'=35.0 m i n
CN=67
i
5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
Time (hours)
l� Runoff

Champs Convenience Store- Pre.Development
Champs - Pre Dev. Type 1I 24-hr 100 year Rainfall= 7.81 "
Prepared by (enter your company name here) Printed 11/512022
H droCAD® 10.00-18 s/n 05976 02016 H droCAD Software Solutions LLC Page 6
Summary for Subcatchment 1S: Champs - Pre Dev.
Runoff = 10.99 cfs @ 12.31 hrs, Volume= 1.075 af, Depth> 3.61"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs
Type 11 24-hr 100 year Rainfall=7.81"
Area (ac) CN Description
3A60
66 Woods, Poor, HSG B
0.110
98 Paved parking, HSG 8-__---
3.570
67 Weighted Average
3.460
96.92% Pervious Area
0.110
3.08% Impervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ftlft) (ftlsec) (cfs)
35.0 Direct Entry, Pre-dev.
Subcatchment 1S: Champs - Pre Dev.
Hydrograph
12:
-C
10
9-
8. :
a 7�--
w
3 6-
LL
5-
I
4-
Type 11 24-hr. .
100-year Rainfall=7.81"_ .
- Runoff Area=3..570 a.c
Runoff Volume=1.075 of
- Runoff Depth>3.61"
Tc=35.0 m i n
_ CN=67
5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
Time (hours)
❑ Runoff