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The nearly 8100 major dams in the United States in 2006. The National Inventory of Dams defines a major dam as being 50 feet (15 m) tall with a storage capacity of at least 5,000 acre-feet (6,200,000 m 3), or of any height with a storage capacity of 25,000 acre-feet (31,000,000 m 3).
Following is a list of dams and reservoirs in Pennsylvania. All major dams are linked below. The National Inventory of Dams defines any "major dam" as being 50 feet (15 m) tall with a storage capacity of at least 5,000 acre-feet (6,200,000 m 3 ), or of any height with a storage capacity of 25,000 acre-feet (31,000,000 m 3 ).
The dams slow water, trapping silt and pollutants. Conowingo Dam [1] is credited with preventing much of the silt from Pennsylvania from reaching the Chesapeake Bay. The dam spillways can add oxygen to the water. The down stream side of dams is favored by aquatic birds, possibly because the fish that pass through the dam are a bit stunned.
Failure to dissipate the water's energy can lead to scouring and erosion at the dam's toe (base). This can cause spillway damage and undermine the dam's stability. [22] To put this energy in perspective, the spillways at Tarbela Dam could, at full capacity, produce 40,000 MW; about 10 times the capacity of its power plant. [23]
Warrensburg Hydroelectric Dam; See also. List of dam removals in New York; List of lakes of New York This page was last edited on 5 September 2023, at 20:25 (UTC ...
Overhead of dam complex including auxiliary spillways. The main spillway, part of the eastern end of the dam, is a 861 ft (262 m) long Ogee-type and utilizes twenty-one 25 ft (7.6 m) tall and 36 ft (11 m) wide tainter gates that are operated by two 60-ton hoists. [4]
Emsworth Locks and Dam is a combination of locks and dam on the Ohio River located just downstream of Pittsburgh. The dam has two gated sections, one on each side of Neville Island . There are two locks, one for commercial barge traffic that is 600 feet long by 110 feet wide, and the recreational auxiliary lock that is 360 feet long by 56 feet ...
The dedication at Mansfield Dam, August 2023. Mansfield Dam is 278 feet (85 m) high, 7,089 feet (2 km) long, and 213 feet (65 m) thick at the base. The concrete gravity dam with embankment wings and saddle dikes was designed to control flooding; to store 1.4 km 3 (369 billion US gallons) of water; and to generate hydroelectric power (108