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Water-Year Summary for Site 03439000

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The daily maximum and minimum water level values for groundwater wells after September 30, 2023 are no longer being displayed on NWISWeb. However, these values can be determined using the instantaneous values that are available through the "Time-Series: Current/Historical Observations" option in the available data dropdown box for the station.


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  • Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
  • For water years 2014 onward, choose a water year and parameter and an on-demand Water-Year Summary report will be generated.
  • For water years 2006 through 2013, choose a water year and an Annual Water Data Report will be provided.
  • For water years 2005 and earlier, Annual Water Data Reports may be available in digital format.
  • Not all sites have reports available for every water year.
Available Parameters
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
03439000 FRENCH BROAD RIVER AT ROSMAN, NC
LOCATION - Lat 35°08'36", long 82°49'29" referenced to North American Datum of 1983, Transylvania County, NC, Hydrologic Unit 06010105, on left bank 50 ft upstream from bridge on U.S. Highway 178 at Rosman, 1.0 mi upstream from East Fork, and at river mile 216.4.
DRAINAGE AREA - 67.9 mi². (measured by TVA from topographic maps, scale 1:24,000). Basin is practically all in the Pisgah National Forest, which is covered with hardwood and dense undercover. There are a few small farms in the valleys of tributaries. Sparsely populated except for the town of Rosman in the reach above the gage. Basin is in heavy rainfall area, 70-80 inches per year.
REVISIONS HISTORY -

WSP 823: Drainage area. WSP 1306: 1908, maximum discharge. WSP 1910: 1936, maximum discharge; 1938-40, maximum discharge; 1942-43, maximum discharge; 1939-40, daily discharges; 1942-43, daily discharges.

Gage datum was revised on October 01, 2020, based on an error in the determination of the gage datum. 

SURFACE-WATER RECORDS
PERIOD OF RECORD - May 1907 to June 1909, October 1935 to current year. Monthly discharge only for some periods published in WSP 1306.
GAGE - Data collection platform. Datum of gage is 2,174.0 ft above NAVD of 1988. Prior to June 30, 1909, nonrecording gage at site 500 ft downstream at different datum. January 1, 1936, to July 6, 1937, nonrecording gage at present site and datum. Satellite telemetry at streamgage.
REMARKS -

Gage-height records are generally good. Discharge records are generally good. 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 July 1916 reached a stage of 13.9 ft, from floodmarks.