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Over the next year, the USGS Pennsylvania Water Science Center will be updating the geodetic vertical elevation (gage datum) for many locations. Click HERE for additional information including a current list of streamgages with upcoming datum changes. This update in gage datum does not affect the location of the streamgage, nor the observed local gage height or discharge recorded at the streamgage.
LOCATION.-- Lat 39°42'22.9", long 78°09'09.9", Washington County, MD, Hydrologic Unit 02070004, 1.0 mi north of Hancock, MD, 3.0 mi southeast of Warfordsburg, PA, and 1.35 mi upstream from mouth. DRAINAGE AREA.--113 mi2. PERIOD OF RECORD.-- October 2005 to current year. REVISIONS.http://waterdata.usgs.gov/nwis/inventory/?site_no=01613095 (2020): Drainage area. GAGE.--Water-stage recorder and crest-stage gage. Datum of gage is 398.83 ft above North American Vertical Datum of 1988. REMARKS.--Occasional regulation of low flows from unknown source upstream from station and from the effluent treatment plant located at the station. U.S. Geological Survey satellite data-collection platform at station. EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 5,920 ft³/s, March 5, 2008, gage height, 10.33 ft; maximum gage height, 10.41 ft, Sep. 28, 2018, as a result of backwater at station; minimum discharge, 0.27 ft³/s, Aug. 31, Sept. 1, 2010, as a result of regulation. COOPERATION.--Funding for the operation of this station is provided by the U.S. Environmental Protection Agency.
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