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- Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
- For water years 2014 onward, choose a water year and parameter and an on-demand Water-Year Summary report will be generated.
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USGS Water-Year Summary 2024
02302000 CRYSTAL SPRINGS NEAR ZEPHYRHILLS, FL
LOCATION - Lat 28°10'55", long 82°11'07" referenced to North American Datum of 1983, in NW 1/4 sec.35, T.26 S., R.21 E., Pasco County, FL, Hydrologic Unit 03100205, at eastern edge of spring pool, 1.6 mi. west of village of Crystal Springs, and 4 mi. south of Zephyrhills.
REVISIONS HISTORY - WSP 1052: 1935, 1937-42, 1944, 1945. WDR-US-2009: 2008 Average discharge for period of record. WDR-US-2011: 2010 Average discharge for period of record.
SURFACE-WATER RECORDS
PERIOD OF RECORD - October 1934 to current year (discharge measurements only); February 2003 to current year (gage height and discharge measurements only).
GAGE - Water-stage recorder. Datum of gage is National Geodetic Vertical Datum of 1929 and 0.94 ft. below North American Vertical Datum of 1988. Prior to May 15, 1964, at present site at datum 34.67 ft higher. Prior to Sept. 30, 1983, auxiliary nonrecording gage on Hillsborough River 0.2 mi upstream from Crystal Springs; Oct. 1, 1983, to Sept. 30, 1984, recording gage at same site upstream. Prior to Feb. 19, 2003, nonrecording gage. See WRD FL 1968 for history of changes and extremes prior to Jan. 19, 1953.
COOPERATION - This gage is monitored in cooperation with the Southwest Florida Water Management District.
REMARKS - Spring discharge is the difference between discharge measurements of Hillsborough River made downstream and upstream from Crystal Springs. Since 1945, flow regulated occasionally at springs outlet for recreational purposes. Results of miscellaneous temperature observations prior to October 1977 are available in files of the Geological Survey.
EXTREMES FOR PERIOD OF RECORD - GAGE HEIGHT: Maximum gage height, 56.50 ft, Sept. 12, 2017; minimum, 52.57 ft, June 9, 2012.
DISCHARGE: Maximum discharge measured, 147 ft³/s, July 19, 1941; minimum measured, 20 ft³/s, July 1, 1946.
AVERAGE DISCHARGE FOR PERIOD OF RECORD - 619 measurements (1923, 1933-2023), 53.4 ft³/s, 34.5 mg/d.
WATER-QUALITY RECORDS
PERIOD OF RECORD - Water years 1923, 1946, 1966 to 1999, 2004 to current year.
