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Water-Year Summary for Site 02066000

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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(Mean)  

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

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USGS Water-Year Summary 2020
LOCATION - Lat 36°54'54", long 78°44'28" referenced to North American Datum of 1927, Halifax County, VA, Hydrologic Unit 03010102, on right bank 6 ft downstream from bridge on State Highway 746, 2.8 mi northwest of Randolph, 3.6 mi upstream from Roanoke Creek, and at mile 227.3.
DRAINAGE AREA - 2,966 mi².
REVISIONS HISTORY - WSP 1203: 1928-30. WSP 1303: 1901-6. OFR 2006-1308: Drainage area.
PERIOD OF RECORD - October 1901 to September 1906, October 1927 to September 1930, October 1950 to current year. Monthly discharge only for some periods, published in WSP 1303. Prior to October 1902, published as Staunton River at Randolph. Gage heights collected since 1905 at this site or at former site are contained in reports of the National Weather Service.
GAGE - Water-stage recorder. Datum of gage is 306.53 ft NAVD of 1988 . Aug. 27, 1900 to Oct. 13, 1902, nonrecording gage at site 3.2 mi downstream at datum of about 301.7 ft, based on NGVD of 1929. Oct. 14, 1902 to Aug. 11, 1906 and Oct. 1, 1927 to Mar. 31, 1930, nonrecording gage at site of original gage, at datum of 303.66 ft NGVD of 1929.
REMARKS - Flow regulated since 1962 by Leesville Lake (station 02059400) 68.7 mi upstream and since 1963 by Smith Mountain Lake (station 02057400) 86.7 mi upstream. Statistics of monthly mean data and summary statistics for water years 1901 - 1906, 1928 - 1930, 1951 - 1962 (unregulated flow) are available in previous data books, water years 1991 - 1998. U.S. Army Corps of Engineers satellite gage-height telemeter at station. Maximum discharge, 97,000 ft³/s, from graph based on gage readings, site and datum then in use. Water-quality records for some prior periods have been collected at this location.
EXTREMES OUTSIDE PERIOD OF RECORD - Flood of Aug. 16, 1940, reached a stage of 41.6 ft, present site and datum, discharge, 150,000 ft³/s, from information by U.S. Army Corps of Engineers.
EXTREMES FOR PERIOD PRIOR TO REGULATION - 1901-06, 1928-30, 1951-62: Maximum peak flow, 97,000 ft³/s, Dec. 31, 1901, gage height, 35.00 ft. Instantaneous low flow, 256 ft³/s, Sept. 16, 1954.
PERIOD OF RECORD - August 2003 to current year. Unpublished records available August 2003 to September 2011 in files of the USGS.
INSTRUMENTATION - Electronic data logger with 15-minute record interval. Tipping bucket rain gage mounted on top of concrete gagehouse.
EXTREMES FOR PERIOD OF RECORD - Water years 2012 to 2016: Maximum daily precipitation, 6.99 in., July 12, 2013.