Description: This map from the U. S. Geological Survey Water Resources Investigation Report number 97-4283, Recharge Rates to the Upper Floridan Aquifer in the Suwannee River Water Management District, shows the quartile levels of groundwater chloride concentrations measured in milligrams per Liter. Source: J. W. Grubbs, USGS Water Resources Investigations Report 97-4283 (Tallahassee, FL: U. S. Geological Survey, 1998) 11 Map Credit: Courtesy the University of South Florida Library |
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