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Toston Dam
Toston Dam is a hydroelectric gravity dam located on the Missouri River in Broadwater County, Montana. The dam is long and high, and generates 10 megawatts of power.〔(Water Projects Bureau, p. 1. )〕 The dam is a "run-of-the-river" dam because it can generate electricity without needing to store additional water supplies behind the dam.〔
==Construction==
The dam is named after the town of Toston, Montana, which is just away.〔 A $1.12 million dam was originally proposed in 1935.〔("Toston Dam Seems to be Certain and Work May Start This Fall." ''Three Forks News.'' August 15, 1935. )〕 This project never was built. A smaller dam, whose construction would cost $900,000, was proposed in 1938, and the Montana State Water Conservation Board sought Public Works Administration funds to help construct the dam.〔("Prospect of Toston Dam is Looking Very Favorable." ''Three Forks News.'' May 12, 1938. )〕 This effort proved successful, and the federal agency gave the state $820,000 to build the dam.〔("Big Toston Dam Money Allocated." ''Three Forks News.'' August 4, 1938. )〕 The project was the second-most-expensive hydro effort in the state at the time (only the Tongue River Dam, which cost $1.2 million, was larger).〔
The dam was built on a natural ridge of rock which ran perpendicular to the Missouri River on a point about above Big Spring.〔 An inlet gate was built slightly upstream of the dam which connected to an underground pipeline that exited the ground downstream and connected to an irrigation canal running eastward.〔 A ditch diverted water on the west down a canal for more irrigation purposes.〔 About of Northern Pacific Railroad track was moved and raised to prevent it from being inundated by the Toston Reservoir.〔
The dam was completed 1940.〔
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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