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USGS 01101500 IPSWICH RIVER AT SOUTH MIDDLETON, MA

PROVISIONAL DATA SUBJECT TO REVISION

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LOCATION--Lat 42° 34’10", long 71° 01’39", Essex County, 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.
REVISED RECORDS--WSP 1301: 1942(M). WSP 1621: 1938–58 (monthly runoff). WDR MA-RI-84-1: drainage area.
GAGE--Data Collection Platform with satellite telemeter. Datum of gage is 44.16 ft above NAVD 1988, from Massachusetts Geodetic Survey benchmark. Datum previously reported as 44.97 ft above NGVD 1929, from Massachusetts Geodetic Survey benchmark.
REMARKS--Flow affected by upstream withdrawals for municipal supply of Lynn, Lynnfield, North Reading, and Wilmington. Occasional regulation by mill upstream Diversions upstream for municipal supply of Reading, Lynn, and Peabody.
COOPERATION BY--Massachusetts Department of Conservation and Recreation, Office of Water Resources.


SPECIAL REMARKS Flows are affected by backwater from downstream beaver activity since Sept. 13, 2014. Discharge values are not displayed to prevent use of erroneous data.
Additional discharge measurements will be made to aid in estimating daily mean discharges during periods of backwater. Flow data will be displayed when backwater conditions end.
Boating safety tips
This station managed by the Northborough MA Field Office.

Available Parameters Available Period
  
1990-10-01  2020-07-04
2007-10-01  2020-07-04







 (7)
 

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Summary of all available data for this site
Instantaneous-data availability statement


Discharge, cubic feet per second

Most recent instantaneous value: 14.3 07-04-2020   18:15 EDT
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Daily discharge, cubic feet per second -- statistics for Jul 4 based on 82 water years of record more
Min
(1999)
25th
percen-
tile
Median Most Recent
Instantaneous
Value Jul 4
Mean 75th
percen-
tile
Max
(2009)
0.35 4.9 13 14.3 29 41 167


Gage height, feet

Most recent instantaneous value: 2.21 07-04-2020   18:15 EDT
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