Spillway
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A spillway is a structure used to provide the controlled release of water from a dam or levee, typically downstream into the dammed river. In the United Kingdom, it may be known as an overflow channel
Chute spillway of Llyn Brianne dam in Wales
A stepped-chute baffled spillway of the Yeoman Hey Reservoir in the Peak District in England
Vegetation has grown in the bell-mouth spillway at Covão dos Conchos, Portugal, since its construction in 1955 such that it resembles a natural formation
Glory hole spillway in Lake Berryessa, California, in March 2017
Geehi Dam
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Geehi Dam is a major ungated rockfill embankment dam across the Geehi River in the Snowy Mountains of New South Wales, Australia. The reservoir impounded by the dam is known as Geehi Reservoir.
Spillway
…world is at Hungry Horse Dam in Montana, U.S., and is controlled by a 64-by-12-foot (19.5 by 3.7 m) ring gate. The largest bell-mouth spillway is in Geehi Dam, in New South Wales, Australia, measuring 105 ft (32 m) in diameter at the lake's surface. A siphon spillway uses the difference in height between the…
Wall and spillway.