Description: This map from the U. S. Geological Survey Professional Paper 1403-1 shows the chloride concentrations in milligrams per liter in water from the Lower Floridan aquifer, current to 1989. The diagonals show less than 250 mg/l, the light shaded area shows 250 to less than 500 mg/l, the medium shaded area shows 500 to less than 1,000 mg/l, the medium-dark area shows 1,000 to less than 10,000 mg/l and the dark area shows 10,000 mg/l or more.
Source: Craig L. Sprinkle, USGS Professional Paper 1403-1 (Washington, : U. S. Government Printing Office, 1989) 152
Map Credit: Courtesy the University of South Florida Library |
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