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Garrison Dam is an earth-fill embankment dam on the Missouri River in central North Dakota, U.S. Constructed by the U.S. Army Corps of Engineers from 1947 to 1953, at over two miles (3.2 km) in length, the dam is the fifth-largest earthen dam in the world. [4]
The district includes the powerhouse, an earth embankment, a concrete non-overflow dam, and a 700-foot-long concrete gravity overflow dam. They were built in 1897–1898 by the Hudson River Power Transmission Company and span the western channel of the Hudson River between the Saratoga County shore and Bluff Island.
The dam is located just over 46 miles (74 km) upstream from the mouth of the Nolichucky, and impounds Davy Crockett Lake, [1] [2] which extends 6 miles (9.7 km) upstream from the dam. [2] [3] The dam is a concrete gravity overflow type dam 94 feet (29 m) high and 482 feet (147 m) long. [2] [3] The dam has an ogee-type spillway with a flashboard ...
A diagram that depicts river flows associated with Project Design Flood.. The Old River Control Structure (ORCS) and Overbank Control Structure became operational in 1964 and expanded in 1986 with the addition of the Old River Control Auxiliary Structure (ORCAS).
Chute spillway of Llyn Brianne dam in Wales. A spillway is a structure used to provide the controlled release of water downstream from a dam or levee, typically into the riverbed of the dammed river itself. In the United Kingdom, they may be known as overflow channels. Spillways ensure that water does not damage parts of the structure not ...
A cofferdam on the Ohio River near Olmsted, Illinois, built for the purpose of constructing the Olmsted Lock and Dam A cofferdam during the construction of locks at the Montgomery Point Lock and Dam A cofferdam is an enclosure built within a body of water to allow the enclosed area to be pumped out or drained. [ 1 ]
The existing dam has reached the end of its lifespan. The dam, built in 1841 and reconstructed in 1959, has been worked on many times throughout the year. Under construction: Initial work underway ...
Completed at a cost of $10 million, it was the largest masonry dam in the world for its time, and one of the tallest, surpassing the 135-foot Lake Hemet Dam with a height of 280 feet (84 m) and a length of 723 feet (216 m), while 1,600,000 acre-feet (2.0 km 3) Roosevelt Lake was for a time the world's largest artificial reservoir. The dam was ...