LOCATION.--Lat 39°41'23.3", long 76°46'53.3", Baltimore County, MD, Hydrologic Unit 02060003,
   on left bank 500 ft upstream from bridge on Gunpowder Road, 0.4 mi upstream from Walker Run,
   0.5 mi north of Hoffmanville, and 0.7 mi upstream from Prettyboy Reservoir.
DRAINAGE AREA.--27.0 mi2.
PERIOD OF RECORD.--April 2000 to current year.
GAGE.--Water-stage recorder and crest-stage gage. Datum of gage is 543.60 ft above North American 
   Vertical Datum of 1988. 
REMARKS.--U.S. Geological Survey satellite data-collection platform at station.
EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 6,780 ft3/s, Aug. 28, 2009, gage height, 10.02 ft;
   minimum discharge, 1.80 ft3/s, Aug. 17, 2002.
COOPERATION.--Funding for the operation of this station is provided by Baltimore City Department
   of Public Works.