USGS Water-Year Summary for Site 02277100

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

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

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USGS Water-Year Summary 2023

02277100 ST. LUCIE RIVER AT SPEEDY POINT STUART, FL

LOCATION - Lat 27°12'17.28", long 80°15'31.62" referenced to North American Datum of 1983, in SW 1/4 NW 1/4 NE 1/4 sec.05, T.38 S., R.41 E., Martin County, FL, Hydrologic Unit 03090202, middle of Roosevelt Bridge, 2.7 mi west of Atlantic Ocean, 0.4 mi northwest of Stuart.

REVISIONS HISTORY - WDR FL-2004-2A: 2002, 2003. WDR-US-2013, site 02277100: 2011, 2012 daily values tables and extremes.

SURFACE-WATER RECORDS

PERIOD OF RECORD - August 1997 to current year.

GAGE - Satellite data collection platform with water-stage shaft encoder. Datum of gage is National Geodetic Vertical Datum (NGVD) of 1929.

COOPERATION - South Florida Water Management District.

REMARKS - Data prior to October 1, 2001, is available in the U.S. Geological Survey Open-File Report 2004-1265. Prior to October 1, 2002, only the mean daily gage height and discharge records are available in the files of the U.S. Geological Survey. Prior to October 1, 2002, data was published at a datum 0.02 ft lower than current datum.

EXTREMES FOR PERIOD OF RECORD - GAGE HEIGHT: Maximum gage height, 5.32 ft Sept. 5, 2004; minimum, -1.05 ft Dec. 11, 2005.

WATER-QUALITY RECORDS

PERIOD OF RECORD - SALINITY (TOP, BOTTOM): August 1997 to current year. SPECIFIC CONDUCTANCE (TOP, BOTTOM): January 2007 to current year. WATER TEMPERATURE (TOP, BOTTOM): August 1997 to current year.

COOPERATION - South Florida Water Management District.

INSTRUMENTATION - Water-quality monitor with top and bottom sensors. Data prior to October 1, 2001, is available in the U.S. Geological Survey Open-File Report 2004-1265. Prior to October 1, 2002, only the mean daily salinity and water temperature records are available in the files of the U.S. Geological Survey.

REMARKS - Prior to Mar. 24, 2010, the elevation of the top water quality sensor was at -1.9 ft NGVD29 and the elevation of the bottom water quality sensor was at -8.6 ft NGVD29. Verification of elevation of the sensor depths was performed on Mar. 24, 2010. Mar. 24, 2010 the elevation of the top water quality sensor was -2.1 ft NGVD29 and the elevation of the bottom water quality sensor was -9.8 ft NGVD29. Prior to January 2007 salinity computed directly from specific conductance using rating within water-quality monitor. January 2007 to present salinity computed from specific conductance, corrected and computed through rating in the NWIS database.

EXTREMES FOR PERIOD OF RECORD - SALINITY (TOP): Maximum recorded, 33.8 ppt May 20, 2007; minimum recorded, 0.1 ppt multiple days during each water year. SALINITY (BOTTOM): Maximum recorded, 34 ppt January 17, 2019; minimum recorded, 0.1 ppt occurred on multiple days during the months of Apr. 1999, Oct. 1999, Aug. 2001, Sept. 2004, Oct. 2004, July 2005, Nov. 2005, Aug. 2008, Aug. 2013. SPECIFIC CONDUCTANCE (TOP): Maximum recorded, 51,400 uS/cm @25°C May 20, 2007; minimum recorded, 279 uS/cm @25°C Aug. 22, 23, 2008. SPECIFIC CONDUCTANCE (BOTTOM): Maximum recorded, 51,500 uS/cm @25°C January 17, 2019; minimum recorded, 278 uS/cm @25°C Aug. 23, 2008. WATER TEMPERATURE (TOP): Maximum recorded, 33.9 °C July 16, 2002, Aug. 7, 2007; minimum recorded, 9.4°C Jan. 11, 2010. WATER TEMPERATURE (BOTTOM): Maximum recorded, 33.7 °C Aug. 2, 1998, July 30, 2016; minimum recorded, 9.5°C Jan. 11, 2010.