USGS Water-Year Summary 2019
01589305 POWDER MILL RUN NEAR LOCHEARN, MD
LOCATION - Lat 39°20'06.4", long 76°42'39.0" referenced to North American Datum of 1983, Baltimore County, MD, Hydrologic Unit 02060003, on left bank, 350 ft downstream from State Highway 26 (Liberty Road) culvert, at Baltimore County/Baltimore City line, in Powder Mill Park, 0.75 mi southeast of Lochearn, and 0.5 mi upstream from mouth.
DRAINAGE AREA - 3.64 mi².
PERIOD OF RECORD - November 2005 to current year.
GAGE - Water-stage recorder and crest-stage gage. Datum of gage is 330.57 ft above North American Vertical Datum of 1988.