Columbia Encyclopedia

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McNary Dam

(Encyclopedia)McNary Dam, 7,265 ft (2,214 m) long and 183 ft (56 m) high, on the Columbia River between Oregon and Washington, near Umatilla, Oreg.; built 1947–56 by the U.S. Corps of Engineers. Located at the he...

Oahe Dam

(Encyclopedia)Oahe Dam ōwäˈhē [key], major unit of the Missouri River basin project, 242 ft (74 m) high and 9,360 ft (2,853 m) long, on the Missouri River, central S.Dak., near Pierre; built 1948–63 by the U....

Bonneville Dam

(Encyclopedia)Bonneville Dam bŏnˈəvĭl [key], one of the major dams on the Columbia River where it passes through the Cascade Mts., between Oregon and Wash. The dam, 2,690 ft (820 m) long and 197 ft (60 m) high,...

Conowingo Dam

(Encyclopedia)Conowingo Dam kŏnˌəwĭngˈgō [key], 4,648 ft (1,417 m) long, 102 ft (31 m) high, on the Susquehanna River, NE Md.; completed 1928. It is one of the largest nonfederal hydroelectric power plants in...

Vaiont Dam

(Encyclopedia)Vaiont Dam, 858 ft (262 m) high, on the Vaiont River, a tributary of the Piave River, in Venetia, NE Italy, near Belluno. Vaiont Dam, one of the highest in the world, was completed in 1961 and is used...

Navajo Dam

(Encyclopedia)Navajo Dam, 402 ft (123 m) high and 3,648 ft (1,112 m) long, NW N.Mex., on the San Juan River, near the Colo. line; built 1958–63 by the U.S. Bureau of Reclamation. The dam, a major unit of the Colo...

Beaver Dam

(Encyclopedia)Beaver Dam, city (2020 pop. 16,708), Dodge co., SE Wis., on Beaver Dam Lake, in a productive farm and dairy area; inc. 1856. Industries included food pr...

Parker Dam

(Encyclopedia)Parker Dam, at the Ariz.–Calif. line, on the Colorado River; completed 1938. It is 320 ft (98 m) high and 856 ft (261 m) long. The dam impounds water for Los Angeles and other coastal cities, has a ...

Pensacola Dam

(Encyclopedia)Pensacola Dam, 145 ft (44 m) high and 6,500 ft (1,980 m) long, on the Grand River (local name of the Neosho), NE Okla., NE of Tulsa; built 1938–41 by the state of Oklahoma. The dam impounds Lake of ...

Coolidge Dam

(Encyclopedia)Coolidge Dam, 249 ft (76 m) high, 920 ft (280 m) long, on the Gila River, SE Ariz.; built 1927–28. It irrigates c.100,000 acres (40,470 hectares), half of which are Native American lands in San Carl...