USGS Water-Year Summary 2021
01580520 DEER CREEK NEAR DARLINGTON, MD
LOCATION - Lat 39°37'02.8", long 76°11'30.7" referenced to North American Datum of 1983, Harford County, MD, Hydrologic Unit 02050306, on right bank at Deer Creek pumping station, 1.4 miles southeast of Darlington, 0.7 miles east of Wilson Mill, and 3.5 miles upstream from mouth.
DRAINAGE AREA - 164 mi².
https://waterdata.usgs.gov/nwis/dv/?site_no=01580520: 2000-2004. https://waterdata.usgs.gov/nwis/uv/?site_no=01580520: 2017-2018.
PERIOD OF RECORD - January 2000 to current year.
GAGE - Water-stage recorder and crest-stage gage. Datum of gage is 46.99 ft above North American Vertical Datum of 1988.