The James Diversion Dam and Reservoir are located on the James River in east-central South Dakota about 17 miles north of Huron. The reservoir has approximately 960 water surface acres, 521 land acres and 85 miles of shoreline. Recreation activities are managed by the SD Department of Game, Fish and Parks. There is a public-use area, a picnic area, and boating. Available fish species include crappie, catfish, and walleye. Open year-round.