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Montana Power Company acquired the dam in 1912 as part of a merger, PPL Corporation purchased it in 1997 and sold it to NorthWestern Corporation in 2014. The reservoir it creates, Ennis Lake , is 2.6 miles (4.2 km) long and has a maximum storage capacity of 42,053 acre-foot (51,872,000 m 3 ). [ 2 ]
Tenkiller Ferry Lake, or more simply, Lake Tenkiller, is a reservoir in eastern Oklahoma formed by the damming of the Illinois River.The earth-fill dam was constructed between 1947 and 1952 by the United States Army Corps of Engineers for purposes of flood control, hydroelectric power generation, water supply and recreation.
Ennis is a town in Madison County, Montana, United States, in the southwestern part of the state. The population was 917 at the 2020 census , [ 5 ] up from 838 in 2010 . U.S. Route 287 runs through town, following the Madison River as it descends from the town of West Yellowstone .
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In its middle reaches in Madison County, Montana, the Madison Dam forms Ennis Lake and provides hydroelectric power. In 1959, the 1959 Hebgen Lake earthquake formed Quake Lake just downstream from Hebgen Dam. Downstream from Ennis, the Madison flows through Bear Trap Canyon, known for its class IV-V whitewater. [4]
Following is a list of dams and reservoirs in Montana. 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 ).
Oklahoma has 41 state parks, two national protected forests or grasslands, [12] and a network of wildlife preserves and conservation areas. Six percent of the state's 10 million acres (40,000 km 2 ) of forest is public land, [ 11 ] including the western portions of the Ouachita National Forest , the largest and oldest national forest in the ...
This dam and the rolled earth East and West Dike embankments, which extend 10,311 and 13,235 feet (3143 and 4034 m), respectively, form the Tom Steed Reservoir. The reservoir has a total capacity of 117,825 acre-feet (145,335,000 m 3 ), an active capacity of 109,276 acre-feet (134,790,000 m 3 ), and a surface area at the top of conservation ...