USGS Water-Year Summary for Site 02245340

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	Available Parameters
	00010 Temperature, water(Min.,Max.,Mean)
	00065 Gage height(Mean)
	00095 Specific cond at 25C(Min.,Max.,Mean)
	00480 Salinity(Min.,Max.,Mean)

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Water year 2024: 2024-10-01 to 2025-09-30

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USGS Water-Year Summary 2024

02245340 ST JOHNS R BLW SHANDS BRIDGE NR GRN COVE SPRG, FL

LOCATION - Lat 30°00'21.32", long 81°36'54.49" referenced to North American Datum of 1983, St. Johns County, FL, Hydrologic Unit 03080103, 10000 Shands Pier Road, on left side of fishing pier at the end of Shands Pier, on the right bank of the St. Johns river, 4 mi east-northeast of Green Cove Springs, 1 mi downstream of Shands Bridge, and 49 mi upstream of mouth.

DRAINAGE AREA -

SURFACE-WATER RECORDS

PERIOD OF RECORD - June 2017 to current year.

GAGE - Water-stage recorder and data-collection platform. Datum of gage is at NAVD of 1988.

COOPERATION - This gage is monitored in cooperation with the U.S. Army Corps of Engineers.

REMARKS - Stage affected by tide.

EXTREMES FOR PERIOD OF RECORD - Maximum gage height, 5.02 ft, Sept. 11, 2017; minimum, -1.54 ft, Feb. 8, 2020.

WATER-QUALITY RECORDS

PERIOD OF RECORD -

SPECIFIC CONDUCTANCE: June 2017 to current year.
SALINITY: June 2017 to current year.
WATER TEMPERATURE: June 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. June 2017 to current year; water temperature, specific conductance, and salinity published as daily maximum, minimum and mean.

EXTREMES FOR PERIOD OF RECORD -

SPECIFIC CONDUCTANCE: Maximum, 12,100 µS/cm @ 25°C, May 16, 2022; minimum, 397 µS/cm @ 25°C, Nov. 26, 2022.

SALINITY: Maximum, 6.9 ppt, May 16, 2022; minimum, 0.2 ppt, many days.

WATER TEMPERATURE: Maximum, 34.8°C, Aug. 14, 2023; minimum, 8.5°C, Jan. 5, 2018.