LOCATION.--Lat 27°17'58.9", long 81°49'28.4" (North American Datum of 1983), in 
        SW 1/4 SW 1/4 sec.33, T.36 S., R.25 E.,DeSoto County,Hydrologic Unit 03100101, 
        200 ft east of U. S. Highway 17, and 3.8 mi south of Gardner. 

AQUIFER.--Hawthorn formation of Miocene Age, Geologic Unit 122HTRN. 

WELL CHARACTERISTICS.--Drilled, observation well, diameter 12 in., depth 180 ft, 
        cased to 140 ft. 

INSTRUMENTATION.--Water-stage recorder--60-minute interval. 

DATUM.--Land-surface datum is 75.37 ft above National Geodetic Vertical Datum of 1929.
 Measuring point: Top of recorder shelter floor, 3.05 ft above land-surface datum.
 Land surface datum is 74.33 ft above NAVD 88. Water level elevations computed
 using NGVD 29 in order to maintain consistency with historical records.
 
PERIOD OF RECORD.--March 1978 to September 2010; October 2010 to current year (miscellaneous water level measurements).
 
REVISED RECORDS.--WDR-US-2007:Land-surface datum.
 
CORRECTIONS.--The figures of water level as elevation, in feet NGVD, prior to Oct. 1, 1980, are in error.
  Correct elevations for data published prior to this date may be obtained by using
  datum correction of -1.98 ft. Revised records are in files of the Geological Survey.