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Water-Year Summary for Site 03474000

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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
00060 Discharge(Mean)  

Water year 2019: 2019-10-01 to 2020-09-30
 

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USGS Water-Year Summary 2019
03474000 MIDDLE FORK HOLSTON RIVER AT SEVEN MILE FORD, VA
LOCATION - Lat 36°48'26", long 81°37'20" referenced to North American Datum of 1927, Smyth County, VA, Hydrologic Unit 06010102, on right bank at downstream side of bridge on U.S. Highway 11 at Seven Mile Ford, 0.3 mi upstream from Meade Creek, 3.3 mi downstream from Walker Creek, and at mile 32.1.
DRAINAGE AREA - 132 mi².
REVISIONS HISTORY - WSP 973: 1942(m). WSP 1306: 1947(M).
SURFACE-WATER RECORDS
PERIOD OF RECORD - July 1942 to December 1981, January 1982 to September 1987 (annual maximum only), October 1987 to September 1989, October 1989 to September 1996 (annual maximum only), October 1996 to current year.
GAGE - Water-stage recorder and concrete control. Datum of gage is 1,959.67 ft NAVD of 1988.
COOPERATION - Gage-height record of extremes were provided by Tennessee Valley Authority for the period Jan. 1, 1982, to Sept. 30, 1987, and Oct. 1, 1989 to Sept. 30, 1996.
REMARKS - Prior to April 1977, some diurnal fluctuation at low flow caused by mill 9 mi above station. Since May 1936, flow occasionally regulated by the filling or draining of Hungry Mother Lake on Hungry Mother Creek, capacity, about 1,600 acre-ft. Tennessee Valley Authority gage-height data logger at station, called at 6-hour intervals by computer at Knoxville, TN. Several measurements of water temperature were made during the year. Water-quality records for some prior periods have been made at this location.