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Surface Outlets for Sediment Basins

By: Rich McLaughlin, Albert Jarrett SoilFacts

Sediment basins are temporary stormwater pools that catch runoff so it can deposit some of its sediment. The typical outlet is either a rock dam or a perforated riser barrel, both of which allow water to leave the basin from all depths. One way to improve the sediment capture rate is to use an outlet that dewaters the basin from the top of the water column where the water is cleanest. This publication describes the Faircloth skimmer, flashboard risers and other outlet configurations that accomplish this goal.