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
Mujib Dam Mujib Dam Mujib Dam () is located in Wadi Mujib, between the cities of Madaba and Kerak, in the Madaba Governorate of Jordan. It is a rolled concrete dam with abutments of clay-core rockfill completed in 2004, after six years of construction. Highway 35, part of the historic King's Highway, crosses the crest. The water it impounds is combined with desalinated water piped from brackish wells along the Dead Sea to the west in a reservoir holding 35 million m (1 billion US gallons) which primarily supplies Amman, to the north helping to ease a very stressed national water supply.