Occurrence ...................................................................................... 71
Surfacearea ................................................ .-----------................ ------------------------........................ 74
Depths .... ........ ---------------............................. ................................................ 74
Altitudes ............ ----------------------.................... ............................. .................... 74
Seasonal patterns in lake-level fluctuations .......................................... 74
Range in lake-level fluctuations .............................------------------------------............................ 77
Water quality in lakes .......................................................------------------------------------- 78
Control of lake stages .......................----- -------------------------------........................... 80
Problems .............................. -------------------------------------.................................. .................... 81
Ground water ..................................................................................................------------------------------------------------. 82
Nonartesian aquifers ..........................------------ ---------------.................... .................. 82
Water levels ...... ............................--------------............................. -------------------------- 83
Recharge .... ........................------------------------------------------------ 86
Discharge ...... ... ........................ ......................------------------------------------------------ 86
Quality of water ......................... ...................... ------------------------------------------ 87
Secondary artesian aquifers ..................................----------------------------------- 88
Water levels ................ ............................ ---------------------------------------------88
Recharge .. ............. ........9---------------------------------- 0--------------90
Discharge ....................... ----------------------------------0--------------90
Quality of water ....-------.--............. ----------------- ..----------------............. 90
Floridan aquifer .................. ----------- ----------------- .--------.............. -------91
Aquifer properties .............. ...................---------------------------------------- 91
Zones of the aquifer ...... ...----------------.............. -------------------- 94
Interrelation of zones .... ..................------------------------------------.. .......... 95
Piezometric surface .. --------- ...............--------------- ------------.......... 101
Fluctuations ........ ......... -----------... ..................-------------------------------- 106
Recharge areas ........... ............------------------------------------------................ 112
Discharge areas .................. ... ..... ........... -----------------------------------------116
Quality of water .... ............. ....... ....----------------------....... ..------------------- 117
Salt-water contamination ................................------------------------------------ 124
Drainage wells ..............------------------------------- ------------......................... 128
History ...---- ........... ------------------- ---------.............. ----------------.. 128
Pollution ........... ..... ..... ......... -----------------------------------------------128
Other aspects of drainage wells .... ............... -----------------------------133
Pumping tests ....................... ....-------------------...... ----------------134
Water use .------ __---------....... ----------------------------------------------139
Ground water ------.............. ........... -----------------------------------------139
Surface water .... . .----------- .. .............----------------------------------- 142
Summary .... .. ... ........... 1----------------------------------------------------143
Conclusions -- ........... ------....-------------------- --.------------.......... ----- 145
References -- ......----------------- --- --............. ----------------------------148
ILLUSTRATIONS
Figure Page Frontispiece. Aerial view of the Orlando business district looking northward from Lake Lucerne ................................----------------------------........................... Facing p. 1
1 Location of Orange County and illustrating well-numbering system 5
2 Location of inventoried wells other than drainage wells, Orange
County, Florida .........................................................................------------------------------------------- 7
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