Devils LakeNorth Dakotas largest natural lakeis home to a 1,142-acre park system including Grahams Island State Park and a boat access area on the east side of the lake, named Black Tiger Bay State Recreation Area.
The lake is a closed drainage basin, marked by periods of fluctuating water levels. Over the past decade the lake has risen over 25 feet. Grahams Island State Park is connected by road over an elevated embankment, and travelers should exercise caution during high winds.
The lake features some of the best fishing in North Dakota, both summer and winter. Amenities at Grahams Island State Park include a boat ramp, bait shop, modern and primitive camping facilities and camping cabins.