how to empty detention pond thru gravity if outfall is higher elevation

Question

how to empty detention pond thru gravity if outfall is higher elevation

delagina (Structural)

(OP)

9 Feb 17 21:07

how to empty detention pond thru gravity if outfall is at higher elevation?

peter246 (Civil/Environmental) · Answer 1 · 2017-02-09 21:59:13

basically, you cannot do this by gravity (unless you could set up a siphon situation, which would be tricky to engineer/justify). even a siphon would probably not meet regulatory requirements.

pipe through the berm is the most common way, typically with a concrete structure within the pond to control the flow from the different design storms (i.e. 1-yr, 10-yr, 100-yr storms). what jurisdiction (country/state) is the project located?

cvg (Civil/Environmental) · Answer 2 · 2017-02-10 14:20:24

RE: how to empty detention pond thru gravity if outfall is higher elevation

cvg (Civil/Environmental) 10 Feb 17 14:20

pump

Spartan5 (Civil/Environmental) · Answer 3 · 2017-02-13 16:36:28

RE: how to empty detention pond thru gravity if outfall is higher elevation

Spartan5 (Civil/Environmental) 13 Feb 17 16:36

If you need to drain it temporarily, you can set up a siphon.

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how to empty detention pond thru gravity if outfall is higher elevation