Recharge temperatures and groundwater-age models for the Paradox Valley alluvial aquifer, 2011, Colorado

The U.S. Geological Survey (USGS), in cooperation with the Bureau of Reclamation, began hydrogeologic investigations in 2009 in the Paradox Valley in Colorado. In June 2011, nine groundwater samples were collected from selected wells and springs in the study area. The samples were analyzed for a suite of environmental tracers and dissolved gases that were used to model recharge temperatures and groundwater ages. All geochemical and environmental tracer results used in the models are available in the USGS National Water Information System (NWIS) using USGS station numbers. This data release presents the data and modeling results in four CSV files. The file C14_age_models.csv presents laboratory results for carbon-14 (14C) and carbon-13 [...]