Many approach a dip in *Barton Springs Pool's chilly 68 degrees* water with a religious zeal. Devotees relish swimming in the roomy expanse of spring water, framed by century-old pecan trees. Those who plunge down under the diving board to look at the main spring, which pumps an average of 27 million gallons of water a day, say that the pulsating action reminds them of a steady heartbeat. <http://www.ci.austin.tx.us/parks/bartonsprings.htm>
Hogwash, says I. That would be lower than the annual avg. temperature. Would someone who truly knows hydrology and the springs, please speak up. Verify or Deny, PLEASE! -WaV
