Devils Lake, along with the Irvine/Alice Complex and its associated lakes, and the Missouri River are by far the most obvious fisheries in North Dakota. Lake Sacajawea, a Missouri River impoundment is huge—and hugely popular with anglers. Lake Oahe and Beaver Creek, along with the chain of lakes in South Central North Dakota all presented terrific fishing opportunities.
Check out these Fingal, ND fishing resources:
