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
Kolkewadi Dam Kolkewadi Dam Kolkewadi Dam or Kolkiwadi Dam is a dam located in the Konkani region, Ratnagiri district of Maharashtra, India. It is located in Kolkiwadi, about near the village of Alore, near Chiplun. The dam is part of the Koyna Hydroelectric Project. It contributes in the 3rd stage of power generation of the Koyna Hydroelectric Project. The electricity is generated in the underground power station located at the base of the dam. The total installed generating capacity of the 3rd stage of the project is . The project is run by the Maharashtra State Electricity Board, also known as the