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
Westville Dam Westville Dam The Westville Dam is located on the Quinebaug River between Southbridge and Sturbridge, about west of the Southbridge town center and southwest of Worcester, Massachusetts. Designed and constructed by the United States Army Corps of Engineers, this dam substantially reduces flooding along the Quinebaug and Thames rivers. Construction of the project began in June 1960 with completion in August 1962 at a cost of US$5.6 million. The Westville reservoir is located within the Quinebaug River Watershed and is part of the Thames River Basin. Access to the site is available from Interstate 84 and State Route 131. The