Stout Landing Subdivision - 1283-Vol required (6.0' avg depth)

409 Chicago Drive, Suite 112, Fayetteville, NC 28306
office | 910-426-6777 fax | 910-426-5777 license number | C-2354
On time, every time. | www.4Dsitesolutions.com

Stout Landing Required Storm Volume

Wet Pond #1

Drainage Area:

73.58 acres

Impervious Area: 1,232,562 sf (28.30 ac)
% Impervious: 38.46%

1 inch Storm Event:

Rv = 0.05+0.009 I
Rv = runoff coefficient
I= percent impervious

Rv=0.05+0.009*38.46%
= 0.39614

For volume that must be controlled:
Volume=3,630*Rd*Rv*A

Volume = 3,630*(1 inch)*(0.39614)*73.58 acres = 105,807 cf

SA/DA ratio is 0.88 for a depth of 6.0 feet

Required surface area = 73.58 ac * (0.0088) = 0.6475 ac or 28,205 sf

Surface area provided = 30,998 sf