USGS Water-Year Summary 2022
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.
PERIOD OF RECORD - May 2018 to current year (gage heights only).
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.
PERIOD OF RECORD
SPECIFIC CONDUCTANCE: May 2018 to current year.
SALINITY: May 2018 to current year.
WATER TEMPERATURE: May 2018 to current year.
INSTRUMENTATION - Water quality monitor and data-collection platform.
EXTREMES FOR PERIOD OF RECORD
SPECIFIC CONDUCTANCE: Maximum, 1280 µS/cm @ 25 °C, June 9, 2020; minimum, 326 µS/cm @ 25 °C, Dec. 21, 2018.
WATER TEMPERATURE: Maximum, 36.7 °C, Aug. 10, 2020; minimum, 9.3 °C, Jan. 30, 2022.
SALINITY: Maximum, 0.6 ppt, many days; minimum, 0.1 ppt, Dec. 21, 23, 2018.