CONTENTS


 Page
 Floridan aquifer --_-57
 Movement of water ________-58
 Ground-water velocities ______ -62
 Areas of artesian flow _________63
 Fluctuation of the water level _____ _______64
 Temperature of ground water ______-__--72
 Specific capacity _-_ --- --------------___ -- 73
 Quantitative studies _-___ 73
 'Mineral content ____76
 Sand-and-gravel aquifer ------- 76
 Floridan aquifer ___ 82
Use of water 82
 Surface water ____________82
 Ground water _________ 83
 Sand-and-gravel aquifer __ 83
 Use by industries ______ 83
 Use by municipalities 85
 Use by military operations __87
 Use by agriculture ____87
 Supplies for domestic use ____ _---___88
 Floridan aquifer __88
Water problems ___89
 Problems from natural causes _____ ________--------89
 Periods of low rainfall ______ _89
 Decline of water levels _____----__ --__-__ ------89
 Salt-water encroachment ___...___ 89
 Periods of high rainfall ____---------___---__-90
 Man-made problems ------_____ 90
 Large drawdowns ------------__-- 91
 Salt-water encroachment ________91
 Industrial waste disposal --- -------- -- 95
Potential water supplies ____96
 Surface water _____----------____-- 96
 Ground water _____-________--- --98
 Sand-and-gravel aquifer ---------- 98
 Areas of abundant fresh ground water ____ --_ 98
 Factors which limit the amount of fresh ground water -____ 98
 Floridan aquifer 99
References ___----________---____-- 101