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Water-Year Summary for Site 01653000

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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 2021: 2020-10-01 to 2021-09-30

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USGS Water-Year Summary 2021
LOCATION - Lat 38°48'23", long 77°06'36" referenced to North American Datum of 1927, Alexandria City, VA, Hydrologic Unit 02070010, on  downstream side of Eisenhower Avenue bridge at Alexandria, 2000 ft downstream from confluence of Holmes Run and Backlick Run, and 3.2 mi upstream from mouth.
DRAINAGE AREA - 33.9 mi².
REVISIONS HISTORY - OFR 2006-1308: Drainage area.
PERIOD OF RECORD - June 1955 to March 1979, October 1979 to September 1980, October 1980 to September 1986 (annual maximum only), October 1986 to current year.
GAGE - Water-stage recorder. Gage relocated May 9, 2019. Datum of gage is 22.5 ft NAVD of 1988. Prior to May 9, 2019 Gage reinstalled Nov. 8, 1979. Datum of gage is 31.01 ft NAVD of 1988. Prior to Sept. 20, 1965, at present site at datum of 39.52 ft NGVD of 1929. Sept. 20, 1965, to Jan. 19, 1976, at present site at datum of 37.18 ft NGVD of 1929. Jan. 20, 1976, to Nov. 8, 1976, at site 1,200 ft downstream at datum of 21.74 ft NGVD of 1929. Nov. 9, 1976, to Mar. 31, 1979, at site 0.5 mi downstream at datum of 24.52 ft NGVD of 1029.
REMARKS - Some regulation by Lake Barcroft, formerly Alexandria Reservoir, on Holmes Run 3.6 mi upstream, usable capacity 2,092 acre-ft. Maximum discharge, 19,900 ft³/s, from rating curve extended above 2,500 ft³/s on basis of culvert computations of peak flow for main channel and bypass channels. Water-quality records for some periods have been collected at this location.