What is Barton Springs?
The fourth largest spring in Texas, located in Zilker Park. It is an artesian spring, which means it brings water up under pressure from the Edwards Aquifer, often from great depths. The water flows to the surface at a rate of about 400 gallons of water per second (gps). The spring water is a constant 70 degrees and supplies water to Barton Springs Pool, Barton Creek, and the Colorado River.