Oahe is a large reservoir on the Missouri River in north-central South Dakota. It is one of the six main reservoirs on the Missouri along with the Charles M. Russell, Garrison, Fort Randall, Big Bend, and Oahe dams. The reservoir is 246 miles long, running from Oahe Dam near Pierre to Bismarck, North Dakota. The majority of the reservoir is situated in the Cheyenne River Indian Reservation in central South Dakota. The reservoir is a popular recreational destination, offering opportunities for fishing, boating, camping, bird watching, and other activities.

3 letters

• hoe,
• hao.

2 letters

• ha,
• ea,
• ah,
• oh,
• he,
• eh,
• ho.