USGS Water-Year Summary for Site 02081094

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

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

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USGS Water-Year Summary 2023

02081094 ROANOKE RIVER AT JAMESVILLE, NC

LOCATION - Lat 35°48'47", long 76°53'34" referenced to North American Datum of 1983, Martin County, NC, Hydrologic Unit 03010107, at private pier on right bank, 50 ft downstream of boat ramp at end of Water Street, approximately 19.2 mi upstream from mouth, and 0.5 mi northeast of Jamesville.

DRAINAGE AREA - 9,250 mi².

SURFACE-WATER RECORDS

PERIOD OF RECORD - October 1990 to September 1993, August 1996 to current year. Records from August 1996 to September 1997 are unpublished and available from the USGS Water Science Center, Raleigh, NC.

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

REMARKS - For Water Year 2017: Records good.

EXTREMES FOR PERIOD OF RECORD - Maximum elevation, 5.87 ft, September 18, 19, 1999. Minimum elevation, -2.25 ft, October 29, 2012.

WATER-QUALITY RECORDS

PERIOD OF RECORD - Water years 1955 to 1967, 1998 to current year.

PERIOD OF DAILY RECORD -

WATER TEMPERATURE: October 1955 to September 1967, March 1998 to current year.

SPECIFIC CONDUCTANCE: October 1955 to September 1967, 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. Dissolved oxygen, percent saturation, is computed using a barometric pressure of 760 mm Hg beginning October 1, 2000.

EXTREMES FOR PERIOD OF DAILY RECORD -

WATER TEMPERATURE: Maximum recorded, 32.2°C, July 25, 26, 2010; minimum recorded, 0.8°C, January 8, 2018.

SPECIFIC CONDUCTANCE: Maximum recorded, 1,430 microsiemens, August 27, 2011; minimum recorded, 36 microsiemens, September 19, 20, 21, 1999.

DISSOLVED OXYGEN: Maximum recorded, 14.3 mg/L, January 8, 1999; minimum recorded, <1.0 mg/L,on several days during the period.

DISSOLVED OXYGEN, PERCENT SATURATION: Maximum recorded, 118%, October 5, 2007; minimum recorded, <10%, on several days during the period.

pH: Maximum recorded, 7.7 standard units, June 14, 15, 16, 17, 2002, October 5, 2007; minimum recorded, 5.6 standard units, May 3, 1998,
September 18, 19, 1999.