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

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delagina

Structural
Sep 18, 2010
1,008
US
how to empty detention pond thru gravity if outfall is at higher elevation?


Untitled_c6c6ev.jpg
 
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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?
 
If you need to drain it temporarily, you can set up a siphon.
 
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