Lake Sharpe Behind Big Bend Dam on Missouri River, USA44.2N 99.8W
What appears as a very wide section of the Missouri River in central South Dakota, USA, is the Lake Sharpe reservoir behind Big Bend Dam. The lake has an area of 56,884 acres (230.20 km2) and a maximum depth of 78 ft (24 m). Lake Sharpe is approximately 80 mi (130 km) long, with a shoreline of 200 mi (320 km).
The lake extends up the course of the Missouri River to Oahe Dam and Lake Oahe, partially visible through the clouds in the full image Both the Big Bend Dam and the Oahe Dam were built for power generation and flood control.