USGS Water-Year Summary 2023
01104715 CHARLES RIVER AT NEW CHARLES RIVER DAM AT BOSTON, MA
LOCATION - Lat 42°22'08", long 71°03'42" referenced to North American Datum of 1983, Suffolk County, MA, Hydrologic Unit 01090001, at New Charles River Dam, 0.7 mi north of Boston.
DRAINAGE AREA - 335 mi² of which 24 mi² probably is noncontributing.
SURFACE-WATER RECORDS
PERIOD OF RECORD -
Charles River Stage: September 2002 to current year.
Boston Harbor Tide Stage: October 2002 to September 2006, May 2008 to current year.
GAGE - Water-stage recorder with telephone telemeter. Datum of gage is Boston City Base. Subtract 105.62 ft to adjust gage height to elevation of National Geodetic Vertical Datum of 1929.
COOPERATION - Massachusetts Department of Conservation and Recreation, Division of Planning and Engineering.
EXTREMES FOR PERIOD OF RECORD -
Charles River:
Maximum gage height, 108.96 ft, Mar. 15, 2010, minimum gage height, 105.11 ft, July 6, 2005.
Boston Harbor:
Maximum gage height, 115.04 ft, Jan. 3, 2014. Minimum gage height, 98.21 ft, Dec. 3, 2002.