Afterbay NPS boat ramp provides public access to the Bighorn River below Yellowtail Dam, featuring a launching facility, 29-site campground (accommodating RVs and tents year-round), drinking water, vault restrooms, RV dump station, and picnic areas with tables and fire rings.

Motorized boats are prohibited on the upper 13 miles of river; non-motorized craft like drift boats, canoes, and kayaks are common for floating and fishing access.