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LOCATION.--Lat 39°05'55.1", long 77°28'16.5", referenced to North American Datum of 1983, Montgomery County, MD, Hydrologic Unit 02070008, on left bank in the wooded flood plain adjacent to the C&O Canal path, approximately 1000 ft downstream of Goose Creek. DRAINAGE AREA.--11,130 mi2. PERIOD OF RECORD.--August 2011 to current year. GAGE.--Water-stage recorder and crest-stage gage. Datum of gage is 178.70 ft above North American Vertical Datum of 1988. REMARKS.--This is a stage only station. Discharge is not determined at this location. U.S. Geological Survey satellite data-collection platform at station. EXTREMES FOR PERIOD OF RECORD.--Maximum elevation, 22.45 ft, June 4, 2018; minimum elevation, 2.80 ft, Aug. 26, 2011. COOPERATION.--Funding for the operation of this station is provided by the Interstate Commission on the Potomac River Basin (ICPRB), and the U.S. Geological Survey.