USGS Water-Year Summary 2020
01580700 SWAN CREEK AT SWAN CREEK, MD
LOCATION - Lat 39°31'21.5", long 76°08'32.2" referenced to North American Datum of 1983, Harford County, MD, Hydrologic Unit 02060003, on left bank at downstream side of State Highway 40 bridge, 100 ft upstream from railroad overpass, 0.3 mi west of Swan Creek, 0.85 mi east of Aberdeen, 2.1 mi upstream of confluence with Gasheys Creek, and 4 mi upstream from mouth.
DRAINAGE AREA - 13.2 mi².
PERIOD OF RECORD - October 2007 to current year.
GAGE - Water-stage recorder and crest-stage gage. Datum of gage is 21.20 ft above North American Vertical Datum of 1988. Previously operated as a low-flow partial-record station during water years 1956-59, 1962, 1963, 1966 at same location.