![cover image](https://wikiwandv2-19431.kxcdn.com/_next/image?url=https://upload.wikimedia.org/wikipedia/commons/thumb/e/e4/Viehofen_verbauung.jpg/640px-Viehofen_verbauung.jpg&w=640&q=50)
Check dam
Small dam to counteract erosion / From Wikipedia, the free encyclopedia
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]
![Thumb image](http://upload.wikimedia.org/wikipedia/commons/thumb/5/5d/Check_dam_Thadayana.jpg/640px-Check_dam_Thadayana.jpg)
![Thumb image](http://upload.wikimedia.org/wikipedia/commons/thumb/e/e4/Viehofen_verbauung.jpg/640px-Viehofen_verbauung.jpg)
![Thumb image](http://upload.wikimedia.org/wikipedia/commons/thumb/7/76/Slit_check_dam-2.jpg/640px-Slit_check_dam-2.jpg)
![Thumb image](http://upload.wikimedia.org/wikipedia/commons/thumb/7/7b/Bioswale.jpg/640px-Bioswale.jpg)