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
Toston Dam Toston Dam Toston Dam is a hydroelectric gravity dam located on the Missouri River in Broadwater County, Montana. The dam is long and high, and generates 10 megawatts of power. The dam is a "run-of-the-river" dam because it can generate electricity without needing to store additional water supplies behind the dam. The dam is named after the town of Toston, Montana, which is just away. A $1.12 million dam was originally proposed in 1935. This project never was built. A smaller dam, whose construction would cost $900,000, was proposed in 1938, and the Montana State Water Conservation Board sought Public