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Water-Year Summary for Site 01638480

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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(Mean)  

Water year 2021: 2021-10-01 to 2022-09-30

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USGS Water-Year Summary 2021
LOCATION - Lat 39°15'18", long 77°34'36" referenced to North American Datum of 1927, Loudoun County, VA, Hydrologic Unit 02070008, on left bank, 30 feet downstream from bridge on State Highway 663 at Taylorstown and 3.2 miles downstream from Milltown Creek.
DRAINAGE AREA - 89.5 mi².
REVISIONS HISTORY - OFR 2006-1308: Drainage area.
PERIOD OF RECORD - August 1971 to current year.
GAGE - Water-stage recorder. Datum of gage is 247.37 ft NGVD of 1929. Prior to Nov. 3, 1983, at site 60 ft upstream at datum of 249.15 NGVD of 1929.
COOPERATION - Records were provided by the Virginia Department of Environmental Quality - Water Division.
REMARKS - Maximum discharge, 23,800 ft³/s, from rating curve extended above 7,400 ft³/s on basis of contracted-opening measurement of peak flow. Water-quality records for some prior periods have been collected at this location.