Lake Oahe Along the Missouri River, USA44.8N 100.6W
The long, winding, thick line parallel to the left edge of this image is Lake Oahe, a large reservoir behind Oahe Dam on the Missouri River. The reservoir begins in central South Dakota and continues north into North Dakota in the United States.
In the full image, a second lake can be seen to the north, also on the Missouri River: Lake Sakakawea in North Dakota. Like its neighbor to the south, it is an artificial reservoir, created with the completion of Garrison Dam.