Ancillary maps: figure 1. Thickness of overlying confining materials and areas where the Floridan aquifer system in unconfined -- figure 2. Potentiometric surface and estimated areas of artesian flow for the upper Floridan aquifer prior to development -- figure 3. Precipitation minus potential evaporation -- figure 4. Sinkhole prone areas -- figure 5. Changes in recharge and discharge as a result of development.