SW6230705_Design Calculations_20240304 (26)

SERENTIY
SCM#14
Drainage Area: 658,114 sf
15.11 ac
Impervious Area: 317,703 sf
7.29 ac
%Impervious: 48.3%
1 inch Storm Event:
Rv=0.05+0.009 I
Rv=runoff coefficient
I=percent impervious
Rv= 0.4845
For volume that must be controlled:
Volume=3,630*Rd*Rv*A
Volume required: 26,570 cf
Volume provided: 28499 cf
Average depth: 3.9 ft
SA/DA ratio 1.5
Required surface area: 9872 sf
Surface area provided: 10658 sf