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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 44.97 ft above sea level (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.

ICE EFFECTS ON STREAMFLOW During winter, ice formation in streams can cause stage and corresponding discharge values to appear higher than expected during periods of no precipitation. Ice effects from partial ice cover or shore ice may be minor, where stage and discharge appear to increase at night and decrease to base-line conditions around midday for one or more days. Major ice effects from complete ice cover appear as constantly increasing stage and discharge over several days during prolonged cold periods. Stage and discharge values for streams experiencing minor ice effects will continue to be displayed on the web to enable the user to estimate the approximate base-line discharges. Note that this method of estimation should only be used when no runoff occurs. During periods of major ice effects, display of discharge data on the web will be temporarily discontinued to prevent misuse of erroneous discharge data. The discharge record will resume when it is determined that ice conditions are no longer present. Display of stage data during periods of minor and major ice effects will continue to be displayed on the web. Daily mean discharges will be estimated for all periods of ice-effected discharges.

Boating safety tips
This station managed by the Northborough, MA Field Office.

Available Parameters Available Period
All 2 Available Parameters for this site
  
00060 Discharge 2007-10-01  2014-10-25
00065 Gage height 2007-10-01  2014-10-25

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

Discharge, cubic feet per second
 
-- Data temporarily unavailable for the time period specified --


Gage height, feet

Most recent instantaneous value: 4.02   10-25-2014  03:30 EDT
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