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Madison Dam
Madison Dam is a hydroelectric dam in Madison County, Montana, in the southwestern part of the state.
The timber-crib dam was constructed in 1906 as a replacement for a similar 1901 dam and powerhouse on the same site. The dam is 35 feet high and 257 feet long at its crest, placed into the narrows of Bear Trap Canyon. As one of eight PPL Montana hydro projects, it has a generating capacity of nine megawatts in a run-of-the-river configuration.〔http://www.pplmontana.com/producing+power/power+plants/Madison+Dam.htm〕 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 long and has a maximum storage capacity of 27,200 acre-feet. The lake is relatively shallow and warms significantly during the summer, which tends to decrease fish populations.〔http://www.bigskyfishing.com/Lake-Fishing/Southern%20MT/lakes/ennis_lake.shtm〕 The lake still support recreational fishing for brown trout and rainbow trout, camping, boating, and white-water rafting in Bear Trap Canyon downstream (north) of the dam.〔http://www.lakelubbers.com/ennis-lake-1933/〕
== References ==
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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