Choke Canyon State Park, consisting of two units, South Shore and Calliham, is located on 26,000-acre Choke Canyon Reservoir, a water supply for Corpus Christi. The Calliham Unit, containing 1100 acres, in McMullen County was opened to the public on August 21, 1987. The Calliham Unit offers camping, picnicking, boating, hiking, wildlife viewing, birding, fishing, lake beach and softball and volleyball areas.
Seasonal guided bird walks are conducted on scheduled days.
Day use equestrian is allowed in the North Shore Equestrian Area on Saturday's and Sunday's.