SW6230705_Design Calculations_20240304 (34)

SERENTIY
SCM#15
Drainage Area: 703,037 sf
16.14 ac
Impervious Area: 321,768 sf
7.39 ac
%Impervious: 45.8%
1 inch Storm Event:
Rv=0.05+0.009 I
Rv=runoff coefficient
I=percent impervious
Rv= 0.4619
For volume that must be controlled:
Volume=3,630*Rd*Rv*A
Volume required: 27,062 cf
Volume provided: 28990 cf
Average depth: 3.7 ft
SA/DA ratio 1.42
Required surface area: 9983 sf
Surface area provided: 16831 sf