USGS Water-Year Summary 2021
01589100 EAST BRANCH HERBERT RUN AT ARBUTUS, MD
LOCATION - Lat 39°14'24.0", long 76°41'31.9" referenced to North American Datum of 1983, Baltimore County, MD, Hydrologic Unit 02060003, on left bank 50 ft upstream from bridge on Tom Day Boulevard at U.S. Route 1 in Arbutus, 0.5 mi upstream from mouth, and 2 mi south of Baltimore City limits.
DRAINAGE AREA - 2.47 mi².
PERIOD OF RECORD - August 1957 to September 1989, October 1998 to current year.
GAGE - Water-stage recorder, V-notch sharp crested weir, and crest-stage gage. Datum of gage is 40.17 ft above North American Vertical Datum of 1988. Prior to August 1981, at site 100 ft downstream at same gage datum.