Check dam

Concrete check dams in Austria
A steel check dam
A common application of check dams is in bioswales, which are artificial drainage channels that are designed to remove silt and pollution from runoff.

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. Check dams themselves are not a type of new technology; rather, they are an ancient technique dating from the second century AD. Check dams are typically, though not always, implemented in a system of several dams situated at regular intervals across the area of interest.

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