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
Beyyurdu Dam Beyyurdu Dam The Beyyurdu Dam is a gravity dam under construction on the Bembo River (an eventual tributary of the Great Zab) in Beyyurdu, Şemdinli district of Hakkâri Province, southeast Turkey. Under contract from Turkey's State Hydraulic Works, Özdoğan Group began construction on the dam in 2008 and a completion date has not been announced. In July 2012 and May 2014 suspected Kurdistan Workers' Party (PKK) militants set fire to equipment at the construction sites of the Beyyurdu Dam and also the Aslandağ Dam which is located upstream. The reported purpose of the dam is water storage and it can