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USGS Water-Year Summary 2024
281715082164402 State Highway 577 Shallow Well near San Antonio, FL.
Surficial aquifer system
Sand Aquifer
Sand Aquifer
LOCATION - Lat 28°17'16", long 82°16'44" referenced to North American Datum of 1983, in NE 1/4 NE 1/4 NW 1/4 sec.26, T.25 S., R.20 E., Pasco County, FL, Hydrologic Unit 03100205, 21 ft west of State Highway 577, and 3.1 mi south of San Antonio.
REVISIONS HISTORY - The figures of water level as elevation in feet, NGVD 29 from June 26, 1984 to September 3, 1991 are in error. Correct elevations published during this period may be obtained by using datum correction of +0.56 ft.
GROUNDWATER RECORDS
WELL CHARACTERISTICS - Depth 20.7 ft. Upper casing diameter 6 in; top of first opening 17.7 ft, bottom of last opening 20.7 ft. Drilled, observation, water-table well.
DATUM - Land-surface datum is 129.78 ft above National Geodetic Vertical Datum of 1929. Measuring point: Top of shelter floor, 3.56 ft above land-surface datum, Jun. 8, 1964 to present. Land-surface datum is 128.49 ft above North American Vertical Datum of 1988.
PERIOD OF RECORD - January 1970 to October 2004 (periodic); October 2004 to September 2012 (discontinued). Records of water levels prior to January 1974 are not published but are available in files of the Geological Survey.
GAGE - Water-stage recorder--60-minute interval.
COOPERATION - This gage is monitored in cooperation with Southwest Florida Water Management District.
EXTREMES FOR PERIOD OF RECORD - Highest water level measured, 129.01 ft NGVD, March 31, 2011; well observed dry, some days, some years.
