Lake Sakakawea (Garrison Dam area)

The third-largest reservoir in the US, formed by Garrison Dam on the Missouri River, and the standard open-water training and fun-dive lake for North Dakota's dive community. Water near the dam face is the clearest in the river system (15-20 ft on good days), and shallow bays hold aquatic grass beds sheltering fish, turtles and crayfish, with rock formations and fossils on the lake bed. Lake Sakakawea State Park near Pick City provides ramps and shore access.