Check dam
Small dam to counteract erosion / From Wikipedia, the free encyclopedia
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A check dam is a small, sometimes temporary, dam constructed across a swale, drainage ditch, or waterway to counteract erosion by reducing water flow velocity.[1] Check dams themselves are not a type of new technology; rather, they are an ancient technique dating from the second century AD.[2] Check dams are typically, though not always, implemented in a system of several dams situated at regular intervals across the area of interest.[3]