A Tale of Three Segments: Similarities and contrasts between the Northern, Barton Springs, and Southern Segments of the Edwards Aquifer

Barbara Mahler and Mary Lynn Musgrove

The karstic Edwards aquifer supplies water to a rapidly increasing population in Central Texas. The three segments of the aquifer—the Barton Springs segment, the San Antonio segment, and the Northern segment—have received varying amounts of study. The presenters will discuss what is known about flowpaths, hydrogeologic reactivity, aqueous geochemistry, and contaminant concentrations in the three segments, with a focus on the data gaps that remain.

Biographies

Barbara Mahler (right) is a Research Hydrologist at the USGS Texas Water Science Center in Austin. Her research has focused on using geochemistry to better understand karst hydrosystems. Most of her research has been on the Edwards aquifer in Central Texas and karst aquifers in northeastern and southern France.

MaryLynn Musgrove (left) is a Research Physical Scientist at the USGS Texas Water Science Center in Austin. Her research has focused on using geochemistry to better understand groundwater systems with a focus on karst aquifers, including the Edwards aquifer.