Cover: Left, Borehole geophysical suite collected at Tri-County transect well TC2, 2003-10. Right, Photograph of a U.S. Geological Survey borehole geophysical logging truck, April 2009. Background, Photograph of the Sun setting over the project site, San Antonio segment of the Edwards aquifer, south-central Texas, 2003.
Graphs showing groundwater flows (fluxes) and cumulative volumes for the historymatched model (1999-2009) and the predictive model (1950-56), San Antonio region, Texas. Positive values represent groundwater gains, and negative values represent groundwater losses .
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