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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.
- For water years 2006 through 2013, choose a water year and an Annual Water Data Report will be provided.
- For water years 2005 and earlier, Annual Water Data Reports may be available in digital format.
- Not all sites have reports available for every water year.
USGS Water-Year Summary 2024
302657081312400 CLAPBOARD CRK AB BUCKHORN BLUFF NR JAX, FL
LOCATION - Lat 30°26'57.44", long 81°31'23.88" referenced to North American Datum of 1983, in T.1 S., R.28 E., Duval County, FL, Hydrologic Unit 03080103, in land grant 5, on piling on the right bank 0.5 mi upstream from the end of Sheffield Rd., 0.7 mi north of Buckhorn Bluff, 0.64 mi south of Cedar Point Rd., 4.5 mi upstream from mouth, and 11.3 mi northeast of Jacksonville.
WATER-QUALITY RECORDS
PERIOD OF RECORD -
SPECIFIC CONDUCTANCE: January 2016 to current year.
WATER TEMPERATURE: January 2016 to current year.
SALINITY: January 2016 to current year.
COOPERATION - This gage is monitored in cooperation with the U.S. Army Corps of Engineers.
INSTRUMENTATION - Water quality monitor and data-collection platform.
REMARKS - Extremes for current year and extremes for period of daily record are based on recorded values and may have been exceeded during periods of no record. January 2016 to September 2016; water temperature, specific conductance, and salinity published as instantaneous maximum and minimum and daily mean.
EXTREMES FOR PERIOD OF RECORD -
SPECIFIC CONDUCTANCE: Maximum, 51,400 µS/cm @ 25 °C, Aug. 29, 2016; minimum, 901 µS/cm @ 25 °C, June 2, 2018.
WATER TEMPERATURE: Maximum, 35.4 °C, July 30, 2023; minimum, 5.3 °C, Jan. 5, 2018.
SALINITY: Maximum, 33.8 ppth, Aug. 29, 2016; minimum, 0.4 ppth, June 2, 2018.
