USGS Water-Year Summary 2021
01589352 GWYNNS FALLS AT WASHINGTON BOULEVARD AT BALTIMORE, MD
LOCATION - Lat 39°16'17.4", long 76°38'54.8" referenced to North American Datum of 1983, Baltimore City, MD, Hydrologic Unit 02060003, on left bank, at Carroll Park Municipal Golf Course, 350 ft upstream from bridge on Washington Boulevard, 0.9 mi northwest of Morrell Park, and approximately 1.6 mi upstream from mouth.
DRAINAGE AREA - 65.9 mi².
PERIOD OF RECORD - October 1998 to current year.
GAGE - Water-stage recorder and crest-stage gage. Datum of gage is 6.68 ft above North American Vertical Datum of 1988.