SW6220401_Design Calculations_20220621 (4)

Cameron Commercial
Wet Pond #1
SCS curve number
Hydraulic Soil Group: A
Area
SCS CN
Building (sf)
17,113
98
Sidewalk (sf)
2,916
98
Pavement (sf)
46,998
98
Pond (sf)
5,046
98
Open space (sf)
26,516
39
Offsite -open space (sf)
69
Offsite -impervious (sf)
98
Total (sf)
98589
82
98589
Total (ac)
2.26
Rational Coefficient
Pre -development
Post -development
Area
C
Area
C
Building (sf)
501
0.95
Building (sf)
17,113
0.95
Sidewalk (sf)
0.95
Sidewalk (sf)
2,916
0.95
Pavement (sf)
0.95
Pavement (sf)
46,998
0.95
Open space (sf)
64,638
0.30
Pond (sf)
5,046
0.95
Offsite -open space (sf)
0.40
Open space (sf)
26,516
0.30
Offsite -impervious (sf)
0.95
Offsite -open space (sf)
0.30
Offsite -impervious (sf)
0.95
Total (sf)
65139
0.30
Total (ac)
1.50
Total (sf)
98589
0.78
Total (ac)
2.26
1766-Runoff coefficient .xls Printed 6/21/2022