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Water-Year Summary for Site 02319800

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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.
Available Parameters
00010 Temperature, water(Min.,Max.,Mean)  
00060 Discharge(Mean)  
00065 Gage height(Mean)  
00095 Specific cond at 25C(Min.,Max.,Mean)  

Water year 2023: 2022-10-01 to 2023-09-30

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USGS Water-Year Summary 2023
LOCATION - Lat 30°14'41", long 83°14'59" referenced to North American Datum of 1927, in NW 1/4 sec.08, T.3 S., R.11 E., Lafayette County, FL, Hydrologic Unit 03110205, at bridge on County Road 250 at Dowling Park and 112 mi upstream from mouth.
DRAINAGE AREA - 7,190 mi². includes part of watershed in Okefenokee Swamp, which is indeterminate.
REVISIONS HISTORY - Revisions: Daily values for temperature and specific conductance records for March 2, 2017, March 21-22, 2017, April 19, 2017, July 20-22, 2017, July 26, 2017, August 8-12, 2017, August 14, 2017, and August 30, 2017 were revised on March 9, 2018.   Daily values were computed with insufficient unit values and did not meet the USGS minimum criteria for publication. 

Revisions: Gage height and discharge for the period Apr. 11, 2014, to Oct. 17, 2017, were revised on May 22, 2018, based on an error discovered during routine levels ran on Feb. 15, 2018. Mean gage heights for discharge measurements 104-134, shift curves for measurements 122-134 , and the gage height peaks for water years 2015, 2016, and 2017 were revised.
PERIOD OF RECORD - March 1950 to August 1954 and November 1975 to October 1977 (annual maximum discharge and gage-height), October 1996 to current year.
GAGE - Water-stage recorder and data-collection platform. Datum of gage is National Geodetic Vertical Datum of 1929.
EXTREMES OUTSIDE PERIOD OF RECORD - Flood of Apr. 7, 1948, reached a stage of 61.46 ft, from floodmarks; discharge, 92,600 ft³/s.

SPECIFIC CONDUCTANCE: March 2017  to current year.

WATER TEMPERATURE: March 2017 to current year.

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.

SPECIFIC CONDUCTANCE: Maximum, 382 µS/cm @ 25 °C, Dec. 11, 2019; minimum, 48 µS/cm @ 25 °C, Aug. 7, 2019.

WATER TEMPERATURE: Maximum, 28.2 °C, July, 5, 2017; minimum, 10.0 °C, Jan. 25, 26, 2022.