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
Sogamoso Dam around the reservoir. Sogamoso Dam The Sogamoso Dam is a concrete-face rock-fill dam on the Sogamoso River in northern Colombia. It is located west of Bucaramanga in Santander Department and north of Bogotá. The primary purpose of the dam is hydroelectric power generation and its power plant has an installed capacity of which increased Colombia's generating capacity by 10 percent. Construction on the dam began in February 2009 and its first 273 MW Francis turbine-generator was commissioned on 1 December 2014. The other two generators were operational by 20 December 2014. The US$1.74 billion dam and power plant is owned