Tritium?helium-3 groundwater ages of the Edwards aquifer in south-central Texas were determined as part of a long-term study of groundwater flow and recharge in the Edwards and Trinity aquifers. These ages help to define groundwater residence times and
Hunt, Andrew G. ahunt@usgs.gov,Landis, Gary P.,Faith, Jason R.. Groundwater ages from the freshwater zone of the Edwards aquifer, Uvalde County, Texas???Insights into groundwater flow and recharge. 2016-01-01.