Stormwater Pumping Behind River Levee
Stormwater Pumping Behind River Levee
(OP)
I have a site that drains to the river thru a storm water pumping station. The gates close and the pumps get turned on when the river reaches a certain flood stage.
1. What is your understanding for the standard engineering practice designing storm water systems per above? Do I have to design it for the 100 yr storm if the gates are closed?
2. Best guess what size pumnps would I need if I have 209cfs peak flow to the pumping station with a total volume for the 100 yr 24 hr storm being 920,000 cf?
1. What is your understanding for the standard engineering practice designing storm water systems per above? Do I have to design it for the 100 yr storm if the gates are closed?
2. Best guess what size pumnps would I need if I have 209cfs peak flow to the pumping station with a total volume for the 100 yr 24 hr storm being 920,000 cf?
RE: Stormwater Pumping Behind River Levee
Your site design criteria are generally set by the city or county permitting agency and probably at least 100-year if higher. doesnt matter if "gates" are closed, you still need to protect your site from flooding.
Pump size is dictated by the size of your detention basin. since you have 21 acre-feet of water, you will either need a large basin or a very large pump.
the following USACE publications are available online and might help
EM 1110-2-1413 HYDROLOGIC ANALYSIS OF INTERIOR AREAS
EM 1110-2-1913 DESIGN AND CONSTRUCTION OF LEVEES
EM 1110-2-3102 GENERAL PRINCIPLES OF PUMPING STATION DESIGN AND LAYOUT
RE: Stormwater Pumping Behind River Levee
RE: Stormwater Pumping Behind River Levee