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USGS Water-Year Summary 2024
291100082010003 CE-76. USGS Observation Well CE-76 near Ocala, FL.
Floridan aquifer system
Floridan Aquifer System
Floridan Aquifer System
LOCATION - Lat 29°11'00", long 82°01'00" referenced to North American Datum of 1927, in NE 1/4 NW 1/4 SW 1/4 sec.16, T.15 S., R.23 E., Marion County, FL, Hydrologic Unit 03080102, on south side of Sharpes Ferry Road, 6.5 mi east of Ocala. Owner: U.S. Geological Survey.
GROUNDWATER RECORDS
WELL CHARACTERISTICS - Depth 153 ft. Upper casing diameter 6 in; top of first opening 124 ft, bottom of last opening 153 ft. Drilled, observation, artesian well, cased to 124 ft.
DATUM - Land-surface datum is 64.51 ft above National Geodetic Vertical Datum of 1929. Measuring point: Top of casing, cap top, 67.51 ft above National Geodetic Vertical Datum of 1929, Jan. 29, 1968 to Feb. 20, 2002; Top edge of casing, 67.31 ft above National Geodetic Vertical Datum of 1929, Apr. 10, 2002 to Oct. 1, 2011; Top edge of flange, 67.15 ft above National Geodetic Vertical Datum of 1929, Oct. 1, 2011 to present. Prior to Oct. 1, 2011, measuring point top edge of casing 2.80 ft above land-surface datum. Prior to Apr. 10, 2002, measuring point 3.00 ft above land surface datum. Prior to Oct. 1, 2011, datum of gage was considered to be -0.16 ft lower. See REMARKS.
PERIOD OF RECORD - January 1968 to September 1977; October 1977 to March 2002 (bimonthly), April 2002 to current year.
GAGE - Water-stage recorder and data-collection platform--15 minute interval.
COOPERATION - This gage is monitored in cooperation with the St. Johns River Water Management District.
REMARKS - Well records used to determine flow of Silver Springs. Datum of gage was changed -0.16 ft based on surveyed elevations from St. Johns River Water Management District bench marks. These bench marks are considered to be more accurate than the original elevations used to determine the elevation of the gage.
EXTREMES FOR PERIOD OF RECORD - Highest water level, 46.78 ft above NGVD of 1929, Apr. 19, 1970; lowest measured, 39.22 ft above NGVD of 1929, July 2, 2001.
