Hydraulics and Lawns
Hydraulics and Lawns
(OP)
I just did a runoff study for a large neighborhood watershed here in San Diego. I used the County recommended runoff coefficients. I drove through the neighborhood to make sure I didn't miss anything relevant and noticed almost everyone is replacing their lawns because of the drought. Good! But they're generally replacing lawn with decorative rock over a sheet of impervious plastic. In my case, I get a 5 percent increase in the runoff if I consider the additional area as impervious.
Anybody else dealing with this?
Anybody else dealing with this?





RE: Hydraulics and Lawns
(I kid)
Hydrology, Drainage Analysis, Flood Studies, and Complex Stormwater Litigation for Atlanta and the South East - http://www.campbellcivil.com
RE: Hydraulics and Lawns
RE: Hydraulics and Lawns
ps. I'm doing this because of construction that diverted this flow from one drainage basin to another. Big downstream consequences. I'll send a note to the County about updating their drainage manual. Lets all sing, "It Never Rains in Southern California".