The park contains the Smith Rock Shelter, which has been used by indigenous groups for thousands of years.
The remnants of Thomas McKinney's original limestone home and gristmill are located near the Onion Creek trail.
The park is home to 'Old Baldy', a bald cypress tree estimated to be over 500 years old.
Onion Creek is a major floodway, and the park often closes swimming areas or trails immediately following heavy rainfall.
The limestone bedrock at the park is part of the Edwards Plateau ecosystem.
It is one of the few state parks located entirely within a major city's limits.
The park features petroglyphs and historical markings on some of the cliff faces near the water.
The swimming areas are naturally formed by the scouring action of the creek against the limestone shelf.
McKinney Falls State Park is located at the confluence of Onion Creek and Williamson Creek, featuring limestone ledges and swimming holes. The park preserves ruins of an 1850s stone homestead built by Thomas McKinney, an early Texas businessman. It offers over nine miles of trails for hiking and mountain biking, traversing diverse terrains including rocky creek beds and prairie areas. The limestone rock formations provide natural shelves that create waterfalls during high water flow events. Camping facilities include both primitive sites and campsites with water and electric hookups. The park serves as an urban outdoor destination within the Austin city limits. The landscape is primarily composed of blackland prairie and riparian woodlands. Geologically, the park displays the Del Rio Clay and Buda Limestone formations.
The edge of the Upper Falls limestone ledge during a steady water flow.
Check the park's official status page before heading out, as heavy rain frequently causes trail and swimming hole closures.
Wear water shoes, as the creek bottom consists of uneven limestone rock rather than sand.
Reservations are highly recommended, especially on weekends and during the spring and summer months.
Attempting to swim in the creek during or immediately after heavy rain due to dangerous currents and flash flood risks.
Stay on marked trails to protect sensitive limestone ecosystems and keep pets on a short leash at all times.
