USGS Water-Year Summary for Site 02171645

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	Available Parameters
	00010 Temperature, water(Mean,Max.,Min.)
	00060 Discharge(Min.,Mean,Max.)
	00065 Gage height(Max.,Min.,Mean)
	00095 Specific cond at 25C(Max.,Min.,Mean)
	00300 Dissolved oxygen(Min.,Max.,Mean)
	00400 pH(Min.,Med.,Max.)

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

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USGS Water-Year Summary 2024

02171645 REDIVERSION CANAL AT SANTEE RIVER NEAR ST. STEPHENS, SC

LOCATION - Lat 33°25'39", long 79°54'54" referenced to North American Datum of 1983, Berkeley County, SC, Hydrologic Unit 03050112, on right bank, 0.9 mi downstream from St. Stephens Powerhouse, 3.8 mi upstream from Santee River, and 1.0 mi north of St. Stephens.

DRAINAGE AREA - 14,800 mi².

REVISIONS HISTORY - WRD SC-2004-1: Latitude and longitude.

SURFACE-WATER RECORDS

PERIOD OF RECORD - October 1986 to current year.

GAGE - Data collection platform and acoustic velocity meter. Vertical Datum of gage is NGVD of 1929.

REMARKS - Gage-height records are generally good to fair. Discharge records are generally good to fair except for estimated discharges, which are poor. Additional details on the accuracy of the records can be obtained by contacting the USGS South Atlantic Water Science Center at gs-w-sc_nwisweb_data_inquiries@usgs.gov.

WATER-QUALITY RECORDS

PERIOD OF RECORD - November 2006 to current.

PERIOD OF DAILY RECORD -

SPECIFIC CONDUCTANCE: November 2006 to current year.
pH: November 2006 to current year.
WATER TEMPERATURE: November 2006 to current year.
DISSOLVED OXYGEN: November 2006 to current year.

INSTRUMENTATION - Water-quality multiprobe and data collection platform.

REMARKS - For water year 2014: Specific Conductance records fair except for Dec. 6, May 17 - June 13, Aug. 21 - Sep. 10, which are poor; pH records fair except for Oct. 1 - Dec. 6, May 17 - June 13, which are poor; Temperature records fair; Dissolved Oxygen records fair except for Aug. 21 - Sep. 10, which are poor. For water year 2015: Specific Conductance records fair; pH records fair except for Oct. 18 - Nov. 13, Dec. 16 - Jan. 6, and Feb. 10 - Mar. 18 , which are poor; Temperature records fair; Dissolved Oxygen records fair except for Mar. 18 - May 13, and Jun. 2 - Jul. 1, which are poor. For water year 2016: Specific Conductance records excellent except Mar. 23 - May 23, Jun. 21 - Jul. 13, and Sept. 8-30 which are rated good; pH records good except for Oct. 13 - Dec. 13 which are rated fair, and Sept. 8-30, which are poor; Temperature records excellent except for Dec. 14 - Mar. 22 which are rated good; Dissolved Oxygen records good except for Dec. 14 - March 2 and Aug. 11 - Sept 30 which are rated poor.

EXTREMES FOR PERIOD OF DAILY RECORD -

SPECIFIC CONDUCTANCE: Maximum, 169 microsiemens/cm, Apr. 27, 2008; minimum, 59 microsiemens/cm, Jan. 14, 2016 and Jan. 17-18, 2016.

pH: Maximum, 9.7 standard units, Sept. 26, 2023; minimum, 6.2 standard units, May 14, 15, 2014.

WATER TEMPERATURE: Maximum, 33.7°C, July 31, 2016 and July 22, 2020; minimum, 3.1°C, Jan. 13, 14, 2011, Jan. 4, 2018.

DISSOLVED OXYGEN: Maximum, 17.7 mg/L, Aug. 27, 2023; minimum, 0.8 mg/L, June 25, 2023.