Lake Oahe Lake Oahe Lake Oahe (oh-WAH'-hee) is a large reservoir behind Oahe Dam on the Missouri River; it begins in central South Dakota and continues north into North Dakota in the United States. The lake has an area of and a maximum depth of . By volume, it is the fourth-largest reservoir in the US. Lake Oahe has a length of approximately and has a shoreline of . 51 recreation areas are located along Lake Oahe, and 1.5 million people visit the reservoir every year. The lake is named for the 1874 Oahe Indian Mission. Lake Oahe begins just north of
Miguel Alemán Dam and Mixe families. There been a re-evaluation of the project's impact on the environment. The dam has a capacity of 8 million m (2,113,400,000 US gallons), from which 6.77 million m (1,788,500,000 US gallons) is available for power generation. The dam has a length of . The Temascal hydroelectric plant located east of the dam generates about 725 million kilowatts a year. Miguel Alemán Dam The Miguel Alemán Dam is on the Tonto River in the Papaloapan Region of Oaxaca state in southern Mexico, just upstream from the town of Temascal or Nuevo Soyaltepec, forming the Miguel Alemán Lake with