Oahe Dam the Rocky Mountains forced the dam to open the release gates (not the spillway), releasing in June with another through the power plant totaling . The previous release record was in 1997. Oahe Dam The Oahe Dam is a large earthen dam on the Missouri River, just north of Pierre, South Dakota, United States. The dam creates Lake Oahe, the fourth largest man-made reservoir in the United States. The reservoir stretches up the course of the Missouri to Bismarck, North Dakota. The dam's power plant provides electricity for much of the north-central United States. It is named for the Oahe
Potrerillos Dam Potrerillos Dam Potrerillos Dam is located on the Mendoza River, in Argentina's Potrerillos Valley. The dam was built between 1999 and 2003 by a consortium consisting of Industrias Metalúrgicas Pescarmona (IMPSA) and Cartellone to provide flood control, hydroelectricity and irrigation water. The dam cost US$ 312 million to construct. Located about southwest of Mendoza, the concrete-faced rockfill dam is high and long, impounding the long Potrerillos Reservoir. The dam and reservoir have lost significant storage capacity due to the high silt content of the Mendoza River. When the reservoir was first filled in 2003, the capacity was estimated at ,