SW6230705_Design Calculations_20230831 (16)

SERENTIY
SCM#13
Drainage Area: 978,807 sf
22.47 ac
Impervious Area: 472,872 sf
10.86 ac
%Impervious: 48.3%
1 inch Storm Event:
Rv=0.05+0.009 I
Rv=runoff coefficient
I=percent impervious
Rv= 0.4848
For volume that must be controlled:
Volume=3,630*Rd*Rv*A
Volume required: 39,544 cf
Volume provided: 46440 cf
Average depth: 4.1 ft
SA/DA ratio 1.39
Required surface area: 13605 sf
Surface area provided: 16644 sf