Oahe Dam dam upstream is Garrison Dam, near Riverdale, North Dakota, and the next dam downstream is Big Bend Dam, near Fort Thompson, South Dakota. In September and October 1804, the Lewis and Clark Expedition passed through what is now Lake Oahe while exploring the Missouri River. Oahe Dam was authorized by the Flood Control Act of 1944, and construction by the United States Army Corps of Engineers began in 1948. The world’s first rock tunnel boring machine (TBM) was invented in 1952 by James S. Robbins for the Oahe Dam project, which marked the beginning of machines replacing human tunnelers. The
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