Best Management practices for stormwater runoff ponds. Retention vs. Detention Two different kinds of ponds are often used for flood control and...

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Best Management practices for stormwater runoff ponds. Retention vs. Detention Two different kinds of ponds are often used for flood control and...
Best Management practices for stormwater runoff ponds.
Retention vs. Detention
Two different kinds of ponds are often used for flood control and stormwater runoff treatment:
wet ponds and dry ponds. Both systems function to settle suspended sediments and other solids
typically present in stormwater runoff. Wet ponds are also called retention ponds and they hold
back water similar to water behind a dam. The retention pond has a permanent pool of water that
fluctuates in response to precipitation and runoff from the contributing areas. Maintaining a pool
discourages resuspension and keeps deposited sediments at the bottom of the holding area.

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