10 Facts About Dam

Dam is a barrier that stops or restricts the flow of surface water or underground streams.

In particular, the Jones Falls Dam, built by John Redpath, was completed in 1832 as the largest dam in North America and an engineering marvel.

Hoover Dam is a massive concrete arch-gravity dam, constructed in the Black Canyon of the Colorado River, on the border between the US states of Arizona and Nevada between 1931 and 1936 during the Great Depression.

Jones Falls Dam, in Canada, is a constant radius dam.

Parker Dam on the Colorado River is a constant-angle arch dam.

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Wildhorse Dam near Mountain City, Nevada, in the United States is an example of the type.

Dam is non-jurisdictional when its size excludes it from being subject to certain legal regulations.

Water releases from a reservoir including that exiting a turbine usually contain very little suspended sediment, and this, in turn, can lead to scouring of river beds and loss of riverbanks; for example, the daily cyclic flow variation caused by the Glen Canyon Dam was a contributor to sand bar erosion.

Dam cites Morarji Desai, Interior Minister of India, in 1960 speaking to villagers upset about the Pong Dam, who threatened to "release the waters" and drown the villagers if they did not cooperate.

Dam removal is considered appropriate when the dam is old and maintenance costs exceed the expense of its removal.