USGS Water-Year Summary 2020
01101500 IPSWICH RIVER AT SOUTH MIDDLETON, MA
LOCATION - Lat 42°34'10", long 71°01'39" referenced to North American Datum of 1927, Essex County, MA, Hydrologic Unit 01090001, on right bank in Peabody, 700 ft downstream from Boston Street Bridge at South Middleton, 1.3 mi downstream from Wills Brook, and 2 mi south of Middleton.
DRAINAGE AREA - 44.5 mi².
PERIOD OF RECORD - Discharge: June 1938 to current year. Water-quality records: water years, 1957, 1959, 1999-2001, 2003, 2004.
REVISED RECORDS - WSP 1301: 1942(M). WSP 1621: 1938-58 (monthly runoff). WDR MA-RI-84-1: Drainage area.
GAGE - Water-stage recorder with satellite telemeter. Datum of gage is 44.97 ft above National Geodetic Vertical Datum of 1929 (Massachusetts Geodetic Survey benchmark.)
COOPERATION - Massachusetts Department of Conservation and Recreation, Office of Water Resources.
DATUM - Land-surface datum is 44.97 ft above National Geodetic Vertical Datum of 1929. Measuring point: MEASURINGPOINT.
PERIOD OF RECORD - Water-quality records: Water years 1957, 1959, 1999-2001, 2003-04.