Carbonate-rock aquifers

GROUND WATER ATLAS of the UNITED STATES
Introduction and National Summary

Carbonate-rock aquifers

Figure 27 Photograph showing carbonate-rocks with extremely permeable conduits that conduct large volumes of water
Figure 28 Diagrammatic section showing common types of karst features that develop on the land surface where limestone is exposed in the Mammoth Cave area of central Kentucky
Figure 29 Photograph showing an underground stream in the Mammoth Cave system
Figure 30 Map showing the location of the Floridan aquifer system
Figure 31 Correlation chart showing the composition of the Floridan aquifer system
Figure 32 Map showing the variation of thickness of the Floridan aquifer system
Figure 33 Cross section showing the composition of the Floridan aquifer system at the border between Georgia and Florida
Figure 34 Map showing the movement of water through the Upper Floridan aquifer
Figure 35 Map showing the location of the first-magnitude springs issuing from the Upper Floridan aquifer
Figure 36 Map showing regional declines of water levels in the Upper Floridan aquifer
Figure 37 Map showing concentrations of dissolved solids in the Upper Floridan aquifer