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LOCATION--Lat 42°39’35", long
70°53’39", Essex County, Hydrologic Unit 01090001, on left
bank 200 ft downstream from Willowdale Dam, 1.5 mi downstream from
Howlett Brook, and 4 mi upstream from Ipswich.
DRAINAGE AREA--125 mi2.
PERIOD OF RECORD--Discharge: June 1930 to current year.
Water-quality records: Water years 1954, 1976–79.
REVISED RECORDS--WSP 1621: 1930–58 (monthly runoff). WDR
MA-RI-84-1: drainage area.
GAGE--Water-stage recorder with satellite telemeter. Datum of
gage is 20.63 ft above National Geodetic Vertical Datum of 1929.
REMARKS--Diversions upstream for municipal supply of Reading,
Lynn, Peabody, Danvers, Salem, and Beverly. Occasional regulation by
dams and reservoirs upstream.
COOPERATION BY--Massachusetts Department of
Environmental Protection, Division of Watershed Management.
Massachusetts Department of Conservation and Recreation
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U.S. Department of the Interior |
U.S. Geological Survey
