The Extras:
Activities include hiking, mountain biking, fishing, picnicking and camping. Swimming is allowed; call (512) 243-1643 for Onion Creek conditions. You can also learn more about Thomas F. McKinney in the Smith Visitor Center.
Know Before You Go:
The more than 740 acres encompassing McKinney Falls includes facilities with walk-in water sites, each containing a picnic table, a grill, potable water and a fire ring; campsites with water and electricity and group camps--screened shelters with bunk beds.