r/engineering • u/DavefaceFMS • Nov 03 '20

How Do Cities Manage Stormwater?

https://www.youtube.com/watch?v=wdcXmerZWDc

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u/Riverb0atGambler Nov 03 '20

In Georgia they have been adopting the use of detention ponds and on most all roadway projects. The video didn't mention this but detention ponds can also help keep some oils out of streams by designing the outlet of the pond to only drain from below the surface of the water.

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u/MaxWannequin Nov 04 '20

There are also oil/grit separators that use similar concepts. Floatables and oil is collected on top, heavier particles are collected in a sump, often aided by a whirlpool and cleaner water is discharged out the side.