The river snaking its way across this image of part of South Dakota, USA is the Missouri River. The lower segments reveal some sediments, while the wider navy blue parts actually constitute Lake Oahe.
The rest of the area seems primarily used for agriculture. To the left, we can see a white patch of snow covering some fields.
Lake Oahe is the 4th largest man-made reservoir in the United States. It stretches 231 miles (372 km) up the course of the Missouri to Bismarck, North Dakota.
Lake Oahe was created by the Oahe Dam, a large man-made dam along the Missouri River, just north of Pierre, South Dakota in the United States.
The dam’s powerplant provides electricity for much of the north-central United States. The project provides flood control, electric power, irrigation, and navigation benefits, estimated by the Corps of Engineers at $150,000,000 per year.
However, the construment of the dam also caused much displacement of the American Indian population, as the Cheyenne River Indian Reservation and Standing Rock Reservation lost huge parcels of land, including much of their prime agricultural acreage.