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
Houay Ho Dam the resettlement area and constructed six toilets in six villages, at a total cost of US$15,600. Houay Ho Dam The Houay Ho is a dam located in the Samakkhixay District of Attapeu Province, Laos, east of Pakse and northwest of Attapeu. The project is considered the first privately financed joint venture 'build-operate-transfer' (BOT) hydropower project in Laos. It has installed capacity of , almost all of which is exported to Thailand. The dam and plant design follows a format common to many dams in Laos (similar to, for example, the Nam Theun 2 Dam and the Nam Theun-Hinboun Dam), and