USGS Water-Year Summary for Site 02171905

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

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

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USGS Water-Year Summary 2023

02171905 SOUTH SANTEE RIVER AT STATE PIER NEAR McCLELLANVILLE, SC

LOCATION - Lat 33°09'15", long 79°21'16" referenced to North American Datum of 1927, Charleston County, SC, Hydrologic Unit 03050112, near right bank in Santee Coastal Reserve, 0.8 mi upstream from Pleasant Creek, 2.1 mi upstream of Atlantic Intracoastal Waterway, 8.2 mi northeast of McClellanville, and at mile 7.2.

REVISIONS HISTORY - WDR-SC-2004-1: Gage datum.

SURFACE-WATER RECORDS

PERIOD OF RECORD - March 1987 to current year.

GAGE - Data collection platform. Datum of gage is 21.38 ft below NAVD of 1988. Prior to Mar. 4, 1987 at site 2.1 mi downstream, at same datum.

EXTREMES FOR PERIOD OF RECORD - Maximum gage height, 26.53 ft, Oct. 8, 2016 from CSG reading, but may have been higher during periods of missing gage height record Sep. 21-22, 1989; minimum gage height, 15.13 ft, Jun. 10, 1987. Gage height affected by tide and regulation from Lake Marion (see sta 02171000) and rediversion from St. Stephens powerplant (see sta. 02171645).

WATER-QUALITY RECORDS

PERIOD OF RECORD - Water years 2013 to current year.

PERIOD OF DAILY RECORD -
SPECIFIC CONDUCTANCE: May 2013 to current year.
WATER TEMPERATURE: May 2013 to current year.

INSTRUMENTATION - Water-quality multiprobe and data collection platform. Water quality sensor is located at a depth of 15.00 ft. gage height.

REMARKS -
For the 2014 water year, specific conductance records rated good except for May 16-19, which are fair, and Oct. 1-7, July 6-31, Aug. 30 to Sep. 18, which are poor. For the 2014 water year, temperature records are rated excellent. For the 2015 water year, specific conductance records rated good except for Jul. 9-Jul. 15, which are poor. For the 2015 water year, temperature records are rated good. For the 2016 water year, specific conductance records rated good except for Jan. 27-Mar. 2, May 23-Jun. 17, Jul. 6-Jul. 26, Aug. 12- Aug. 26, which are rated fair. Apr. 11-May 3 are rated poor. For the 2016 water year, temperature records are rated good.

EXTREMES FOR PERIOD OF DAILY RECORD -
SPECIFIC CONDUCTANCE: Maximum, 53,100 microsiemens/cm, October 01, 2019; minimum, 68 microsiemens/cm December 15, 2018.
WATER TEMPERATURE: Maximum, 33.2° C, August 16, 2016; minimum, 2.4 °C, Jan. 05, 2018.