Keyhole State Park Campground offers 10 campgrounds with 300+ total camping sites around Keyhole Reservoir, including developed facilities with water/electric hookups at Tatanka Campground and primitive options at other locations.

The park features boat ramps, a marina, dump station, and is easily accessed off I-90 at exit 165, making it a convenient base for fishing and water recreation; reservations are required May 15-September 15, with some campgrounds available first-come, first-served outside this period.