DS926 Digital surfaces and thicknesses of selected hydrogeologic units of the Floridan aquifer system in Florida and parts of Georgia, Alabama, and South Carolina -- Points and control points for the top of the 10,000 mg/L total dissolved solids boundary

Digital surfaces and thicknesses of selected hydrogeologic units of the Floridan aquifer system were developed to define an updated hydrogeologic framework as part of the U.S. Geological Survey Groundwater Resources Program. This feature class contains data points used to generate est_10000_TDS raster. It also includes "control" points used to map the 10,000 boundary including time-domeain electromagnetic soundings, data source is written communication from Pat Burger, St. Johns River, Water Managment District, 2013 and from other sources.