City Swimming Hole
Barton Springs Pool: Year-Round Natural Swimming in Austin
Barton Springs Pool is a three-acre spring-fed pool in Zilker Park that stays around 68–70 degrees all year.
Barton Springs Pool is fed by underground springs and holds its temperature near 68 to 70 degrees year-round. It sits inside Zilker Metropolitan Park at 2131 William Barton Drive in Austin, along the channel of Barton Creek. The pool is about three acres in size.
The City of Austin Parks and Recreation Department runs Barton Springs. It charges an entry fee that varies by age and season. The pool also provides habitat for the Barton Springs salamander, a federally listed species, which is why water quality rules are strict. Check austintexas.gov for current hours and fees.
Source to confirm: City of Austin – Barton Springs Pool