Retention ponds why do we need them? My sub-division has two. Can’t the water just get drained to the river?
In: Engineering
Okay, does this pond ALWAYS have water in it? Or does it only fill up during a storm?
If it always has water in it, then yea, it is a retention pond, but it cannot simply be drained because that is the normal groundwater. Retention ponds can lower the ground water of a subdivision slightly, but that isn’t just water stuck there, that is the naturally occurring groundwater in that area. So it can’t totally be drained.
Unlike a DEtention pond, which is dry/mostly dry besides during and after rainstorms, where it fills up and holds onto the water for a while before slowly draining into the storm water system, to help from keep the storm water system from overflowing.
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