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Water-Year Summary for Site 01648000

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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 2023: 2022-10-01 to 2023-09-30

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USGS Water-Year Summary 2023
LOCATION - Lat 38°58'21.0", long 77°02'24.0" referenced to North American Datum of 1983, Washington, DC, Hydrologic Unit 02070010, on left bank 125 ft downstream from Sherrill Drive Bridge in Rock Creek Park in Washington, D.C., and 7.5 mi upstream from mouth.
DRAINAGE AREA - 62.2 mi².
PERIOD OF RECORD - October 1929 to current year.
GAGE - Water-stage recorder and crest-stage gage. Datum of gage is 148.14 ft above North American Vertical Datum of 1988.
  • Water Years 2018-2022: Records good, except those above 2,000 ft³/s, which are poor.
  • Water Year 2017: Records good.  No estimated discharges.
  • Water Years 2014-2016: Records good, except those for estimated daily discharges, which are poor.
  • Water Year 2013 and prior years’ accuracy statements can be found in Annual Water Data Reports.

  • Flow affected by two upstream reservoirs which control flow from about 25 mi², Needwood Lake on Rock Creek since Sept. 1966 and Bernard Frank Lake on North Branch Rock Creek since February 1968. U.S. Geological Survey satellite data-collection platform at station.