Barton Springs Natural Spring Vent

Barton Springs Pool in Zilker Park is fed by natural underground springs that help maintain its temperature around the high 60s to low 70s Fahrenheit year-round. The spring vents are concentrated in the pool area and have been studied as part of Austin's hydrology and Edwards Aquifer recharge discussions. The spring-fed pool occupies a specific location within Zilker Park and has long been used for swimming and scientific monitoring.