USGS Water-Year Summary 2020
01580620 CHESAPEAKE BAY AT MOUTH OF SUSQUEHANNA RIVER AT HAVRE DE GRACE, MD
LOCATION - Lat 39°32'15.9", long 76°05'22.5" referenced to North American Datum of 1983, Harford County, MD, Hydrologic Unit 02060003, at Pier 1 in City Yacht Basin, at Millard E. Tydings Memorial Park, at Havre De Grace, and 0.4 mi southwest from mouth of Susquehanna River.
DRAINAGE AREA - Not determined.
PERIOD OF RECORD - October 2012 to current year.
GAGE - Water-stage recorder. Datum of gage is 0.00 ft above North American Vertical Datum of 1988.
EXTREMES FOR PERIOD OF RECORD - Maximum elevation, 4.81 ft, Oct 30, 2012; minimum elevation, -3.02 ft, Feb 5, 2015.