Retention ponds why do we need them? My sub-division has two. Can’t the water just get drained to the river?
In: Engineering
What if all the water gets drained into the river at once uncontrolled? What if the river gets full? We call that a flood.
The retention pond allows the water to sit and drain slowly into the environment. Our houses, roads, and other structures don’t absorb water like the ground does, so when we build things, we increase the risk of flooding. The retention ponds are there to hold the water that would otherwise be absorbed by the ground we built on, reducing the risk of flooding.
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