USGS Water-Year Summary for Site 02084000

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	Available Parameters
	00045 Precipitation(Sum)
	00060 Discharge(Max.,Min.,Mean)
	00065 Gage height(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

02084000 TAR RIVER AT GREENVILLE, NC

LOCATION - Lat 35°37'00", long 77°22'22" referenced to North American Datum of 1983, Pitt County, NC, Hydrologic Unit 03020103, on right bank approximately 1,500 ft downstream from railroad bridge, and 21 mi upstream from Pamlico River at Washington.

DRAINAGE AREA - 2,660 mi².

REVISIONS HISTORY - WDR NC-99-1A: 1997 (annual minimum discharge).

SURFACE-WATER RECORDS

PERIOD OF RECORD - May 1997 to current year. Gage height records collected at site 800 ft upstream from 1905 to 1935 and at site 200 ft upstream from 1935 to 1984, are in reports of the National Weather Service. Unpublished records of gage height for the period October 1984 to September 1990 are available from the USGS Water Science Center, Raleigh, NC.

GAGE - Water-stage recorder and acoustic velocity meter. Datum of gage is 3.54 ft below NAVD88 NAD83(2011) Geoid 09. Satellite telemetry at streamgage.
Historical: The previous datum was reported as 2.36 ft below NGVD29 Supplemental Adjustment of 1936.

REMARKS - This site is affected by both astronomical and wind tides. The astronomical tides occur at primary harmonic periods of 12.42 hours and 24.84 hours. Daily discharges for this site may be affected by aliasing due to tides and can contain fluctuations that are not representative of net downstream discharge. By convention, the U.S. Geological Survey has established downstream as positive flows and upstream as negative flows. Gage-height records are generally good. Discharge records are generally 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-nc_nwisweb_data_inquiries@usgs.gov.

EXTREMES OUTSIDE PERIOD OF RECORD - Flood of August 22, 1940 reached a stage of 22.07 ft at site 200 ft upstream at present datum; discharge 36,500 ft³/s. Maximum observed stage during period 1905-39 (National Weather Service Records) 24.5 ft, July 28, 1919.

EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 73,000 ft³/s, September 21, 1999; maximum gage height, 29.72 ft, September 21, 1999; minimum daily mean discharge, -54.3 ft³/s, August 13, 2010.

CLIMATOLOGICAL RECORDS

PERIOD OF RECORD - October 2003 to current year.

INSTRUMENTATION - Tipping-bucket raingage. Satellite telemetry at station.

REMARKS - Precipitation collected during freezing periods may not be accurately reflected in the daily record.