the water level data from the two 

 zones shows that for much of the 

 time the relationship is reversed. 

 Water levels in the deep zone stand 

 at higher elevations than in the 

 shallow zone. Indicating that ground 

 water is moving upward or discharg- 

 ing. This phenomenon occurs during 

 periods of little or no rainfall. 

 During those times, water levels in 

 the shallow zone decline in response 

 to evaporative losses from the water 

 table. During the seven months of 

 the study, this condition prevailed 

 most of the time, and is taken as 

 additional evidence that evaporation 

 is one of the mechanisms resulting 

 in the formation of hypersaline 

 ground water. 



and the U.S. Virgin Islands. A 

 practical reference containing 

 basic climatological data of the 

 United States. Washington, DC: 

 NOAA. U.S. Department of Com- 

 merce; 1974. 



Dohrenwend, R. E. Evapotranspira- 

 tion patterns in Florida. 

 Gainesville, FL: University of 

 Florida, School of Forest Re- 

 sources and Conservation; 1977. 



Ferris, J. G.; Knowles , D. B.; Brown, 

 R. H.; Stallman, R. W. Theory 

 of aquifer tests. Washington, 

 DC: U.S. Government Printing 

 Office; 1962. Geological Sur- 

 vey Water Supply Paper 1536-E. 



ACKNOWLEDGEMENTS 



Thanks are due to many individ- 

 uals who contributed to the investi- 

 gation, in particular to Chuck 

 Courtney of Applied Environmental 

 Services and Paul Larsen of Larsen 

 and Associates who gave freely of 

 their intimate knowledge of the area. 

 The assistance of Jim Wheatly of 

 Geraghty & Miller during the initial 

 drilling and data collection stages 

 of the investigation and during the 

 writing of the report was invalu- 

 able; his help is deeply appreciated. 

 Credit also is given to Lisa Poulsen 

 of Applied Environmental Services 

 for her efforts in collecting the 

 water level data during this study; 

 to Jim Apthorp, Executive Vice Presi- 

 dent of the Deltona Corporation; and 

 to Bob Motchkavitz of the Deltona 

 Corporation. 



Freeze, R. A.; Cherry, J. A. Ground- 

 water. Englewood Cliffs, NJ: 

 Prentice-Hall, Inc.; 1979. 



Jakob, P. G. Some aspects of the 

 hydrogeology of coastal Collier 



County, Florida, 

 sented at the 1980 

 the Southeastern 

 Society. West Palm 

 1980. 



Paper pre- 



meeting of 



Geologic 



Beach, FL; 



Klein, H. Ground water resources of 

 the Naples area, Collier County, 

 Florida. Tallahassee, FL: 

 Florida Geological Survey; 1954; 

 64 p. Report of Investigation 

 No. 11. 64 p. 



Kreitman, A. Water management and 

 regulation of water use. In 

 depth report. Central and 

 Southern Florida Flood Control 

 District; April 1975. 



LITERATURE CITED 



Climates of the states, Volume 1. 

 Eastern states plus Puerto Rico 



Mackenzie, F. T.; Gassels, R. M. 

 Chemical mass balance between 

 rivers and oceans. Ketano, Y., 

 ed . Geochemistry of water. 

 Stroudsburg, PA: 1975. 



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