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
Beaver Dam State Park (Illinois) Beaver Dam State Park (Illinois) Beaver Dam State Park is an Illinois state park on in Macoupin County, Illinois in the United States. The park is southwest of Carlinville, Illinois and is managed by the Illinois Department of Natural Resources (IDNR) as a public place for fishing. The state park centers on the Beaver Dam Lake, an artificial reservoir which was created by a private Carlinville fishing club in the 1890s. The club later became a private resort which catered to visitors who arrived via the adjacent Chicago and Alton Railroad. During the Great Depression, the resort failed. The state