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The American Diversion Dam (or simply the American Dam) is a diversion dam on the Rio Grande in El Paso, Texas. It is about north of the point where the west bank of the river enters Mexico, from the business center. The dam is operated by the International Boundary and Water Commission. It started operation in 1938. ==Origins== The dam has its origins in the 21 May 1906 treaty between the United States and Mexico for "an equitable distribution of the waters of the Rio Grande." This guaranteed Mexico up to annually, with the Americans taking the rest, except in time of drought when the shares would be reduced on a percentage basis. The Mexicans would withdraw their water from the Rio Grande at the Acequia Madre in Ciudad Juárez about downstream from the point where the river starts to form the international border. To ensure that they got their agreed share, in 1935 Congress authorized construction of the American Dam, which measures the Mexican portion before it reached the international border and lets it continue along the river to the Acequia Madre, while diverting the rest along the new long American Canal to the Franklin Canal, used to irrigate the long El Paso valley. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「American Diversion Dam」の詳細全文を読む スポンサード リンク
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