USGS Water-Year Summary for Site 02081022

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

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

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USGS Water-Year Summary 2024

02081022 ROANOKE RIVER NEAR OAK CITY, NC

LOCATION - Lat 36°00'49", long 77°12'55" referenced to North American Datum of 1983, Martin County, NC, Hydrologic Unit 03010107, on right bank at bridge on North Carolina Highway 11-42, and 5.2 mi northeast of Oak City.

DRAINAGE AREA - 8,810 mi².

SURFACE-WATER RECORDS

PERIOD OF RECORD - DISCHARGE: Occasional discharge measurements, water years 1968-1985. Daily discharges August 2006 to September 2007 (discontinued). ELEVATION: July 1987 to current year.

GAGE - Water stage recorder. Datum of gage is at National Geodetic Vertical Datum of 1929. Satellite telemetry at streamgage.

REMARKS -

For Water Year 2016: Records fair.

For Water Year 2017: Records good.

EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 21,000 ft³/s, January 27, 2007; maximum elevation, 22.07 ft, September 19, 1999; minimum discharge 1,430 ft³/s, September 16, 2007; minimum elevation, 2.27 ft, September 19, 2007.

WATER-QUALITY RECORDS

PERIOD OF RECORD - Water years 1968 to 1973, 1998 to current year.

PERIOD OF DAILY RECORD -

WATER TEMPERATURE: March 1998 to current year.

SPECIFIC CONDUCTANCE: March 1998 to current year.
   
DISSOLVED OXYGEN: March 1998 to current year.
   
DISSOLVED OXYGEN, PERCENT SATURATION: March 1998 to September 2015.

pH: March 1998 to current year.

INSTRUMENTATION - Water-quality monitor with satellite telemetry from March 1998 to current year.

REMARKS - Station operated to define water-quality characteristics in the Roanoke River Basin below Roanoke Rapids Dam. Partial record site from October 1967 to September 1973. Dissolved oxygen, percent saturation, is computed using a barometric pressure of 760 mm Hg beginning October 1, 2000. Water-quality measurements and samples for water years 2006 to 2008 were collected by the U.S. Geological Survey and the North Carolina Department of Environment and Natural Resources, Division of Water Quality.

EXTREMES FOR PERIOD OF DAILY RECORD -

WATER TEMPERATURE: Maximum recorded, 32.1°C, July 30, 2011; minimum recorded, 0.1°C, January 8, 2018.

SPECIFIC CONDUCTANCE: Maximum recorded, 5160 microsiemens, March 29, 2003; minimum recorded, 52 microsiemens, September 17, 1999.

DISSOLVED OXYGEN: Maximum recorded, 15.5 mg/L, January 6, 7, 1999; minimum recorded, 2.4 mg/L, September 24, 2003.

DISSOLVED OXYGEN, PERCENT SATURATION: Maximum recorded, 123%, January 6, 7, 1999; minimum recorded, 28%, September 24, 2003.

pH: Maximum recorded, 8.3 standard units, December 28, 2008; minimum recorded, 6.1 standard units, September 17, 1999, September 20, 21, 2003,
June 16, 17, 2006.