A Detention Basin is a large, open, free draining basin that temporarily “detains” collected stormwater runoff. These basins are normally maintained in a dry condition between storm events.
The main function of a detention basin is to temporarily store stormwater runoff to reduce downstream flowrates, thereby reducing flood peaks. It can also function as a sediment trap.
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External Links & References
- Queensland Urban Drainage Manual
- Dam Safety NSW
- Google Search (Detention Basin)
- Google Search (Retarding Basin)
- IPWEA Detention Basin Warrant Discussion