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El Vado Dam lies on the Rio Chama in the U.S. state of New Mexico, about north-northwest of New Mexico's largest city, Albuquerque and about northwest of the capital city of Santa Fe. The earth-filled structure forms El Vado Lake, a storage reservoir for the Middle Rio Grande Project.〔 ==Construction== The El Vado dam was originally built by the Middle Rio Grande Conservancy District as a storage facility for irrigation water to be used in the Middle Rio Grande Basin.〔 Construction began in 1933 and the dam was completed in 1935. Impoundment of the reservoir, which filled by 1936, inundated El Vado, the largest town of Rio Arriba County. The town's name meant "the crossing" in Spanish, and it was named so because it was an important ford and trading center on the Rio Chama during the 19th century. The dam was rehabilitated by the Bureau of Reclamation in 1954-1955.〔 In the 1960s and 1970s, the San Juan-Chama Project built a diversion through a tunnel from the San Juan River basin to the Rio Chama, requiring an extensive retrofit of the dam's water conveyance facilities.〔 The outlet works at El Vado Dam were enlarged between 1965 and 1966 so that releases from the Heron Dam could pass unimpeded through the dam. The capacity of the El Vado outlet works was increased to pass per second. 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「El Vado Dam」の詳細全文を読む スポンサード リンク
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