Retention ponds why do we need them? My sub-division has two. Can’t the water just get drained to the river?
In: Engineering
When you change the water properties of a piece of land, the water that was flowing off the land needs to be the same as before. You cannot increase the amount of water that leaves the site.
When you develop land, you and to make it less water absorbent so you need retention ponds to retain the water that would have run off.
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