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Water-Year Summary for Site 03503000

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  • Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
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Available Parameters
00045 Precipitation(Sum)  
00060 Discharge(Max.,Min.,Mean)  
00065 Gage height(Max.,Min.,Mean)  

Water year 2023: 2022-10-01 to 2023-09-30
 
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USGS Water-Year Summary 2023
03503000 LITTLE TENNESSEE RIVER AT NEEDMORE, NC
LOCATION - Lat 35°20'11", long 83°31'37" referenced to North American Datum of 1983, Swain County, NC, Hydrologic Unit 06010202, ) on Secondary Road 1113, 0.8 mile downstream from Dehart Creek, 0.8 mile north of Needmore, Swain County, 2.4 miles downstream from Brush Creek, 6.3 miles downstream from Tellico Creek, and at mile 92.9.
DRAINAGE AREA - 436 mi². (measured by TVA from topographic maps, scale 1:24,000). Basin is fairly well populated except the area below Iotla and the small portion that lies within the Nantahala National Forest; generally characterized by small farms in the valleys, woodland on the steep slopes. There are several small towns and communities scattered throughout the basin. The mean annual precipitation is 55-65 inches.
SURFACE-WATER RECORDS
PERIOD OF RECORD - October 1943 to December 1981, October 1983 to current year. Monthly discharge only for some periods, published in WSP 1306.
GAGE - Data collection platform. Datum of gage is 1,760.90 ft above NAVD of 1988. Satellite telemetry at streamgage.
REMARKS -

Considerable fluctuation caused by Porters Bend power plant at Lake Emory, 20 mi upstream.

Gage-height records are generally good. Discharge records are generally good except for estimated discharges, which are fair. 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 - Floods of October 1898 and August 30, 1940, reached stages of about 13 and 11.5 ft, respectively, from flood profiles by Tennessee Valley Authority.