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Water-Year Summary for Site 02245290

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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.,Mean,Max.)  
00065 Gage height(Mean)  
00095 Specific cond at 25C(Min.,Max.,Mean)  
00480 Salinity(Min.,Mean,Max.)  

Water year 2019: 2019-10-01 to 2020-09-30
 

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USGS Water-Year Summary 2019
02245290 ST.JOHNS RIVER AT RACY PT NEAR HASTINGS, FL
LOCATION - Lat 29°48'00", long 81°33'00" referenced to North American Datum of 1983, in sec.39, T.8 S., R.27 E., St. Johns County, FL, Hydrologic Unit 03080103, on channel marker, 260 ft west of right bank, 3.4 mi north of Federal Point and 64 mi upstream from mouth.
SURFACE-WATER RECORDS
PERIOD OF RECORD -

SPECIFIC CONDUCTANCE:  May 2018 to September 2018.
SALINITY: May 2018 to September 2018.
WATER TEMPERATURE: May 2018 to September 2018.

GAGE - Water-stage recorder and data-collection platform.  Datum of gage is NAVD of 1988.
COOPERATION - This gage is monitored in cooperation with the U.S. Army corps of Engineers. 
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.  May 2018 to September 2018; water temperature, specific conductance, and salinity published as daily maximum, minimum, and mean.
EXTREMES FOR PERIOD OF RECORD -

SPECIFIC CONDUCTANCE: Maximum, 852 µS/cm @ 25 °C, July 20, 2018; minimum, 469 µS/cm @ 25 °C, Aug. 30, 2018; maximum daily mean, 837 µS/cm @ 25 °C, July 21, 2018; minimum daily mean, 486 µS/cm @ 25 °C, Aug. 4, 2018. 

WATER TEMPERATURE: Maximum, 36.6 °C, Aug. 20, 2018; minimum, 6.6 °C, Jan. 12, 2010; maximum daily mean, 33.0 °C, July 28, 29, 2016; minimum daily mean, 9.2 °C, Jan. 7, 2018.

DISSOLVED OXYGEN: Maximum, 14.0 mg/L, Apr. 21, 2017; minimum, 24.4 mg/L, May 17, 2018; maximum daily mean, 31.8 mg/L, Aug. 20, 2018; minimum daily mean, 25.5 mg/L, May 17, 2018.

SALINITY: Maximum, 0.4 ppt, many days; minimum, 0.2 ppt, many days; maximum daily mean, 0.4 ppt, many days; minimum daily mean, 0.2 ppt, many days.