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DESCRIPTION:

Latitude 42°22'20",   Longitude 71°14'03"   NAD27

Middlesex County, Massachusetts, Hydrologic Unit 01090001

Drainage area: 251 square miles

Contributing drainage area: 227 square miles,

Datum of gage: 19.21 feet above   NAVD88.

AVAILABLE DATA:

Data Type	Begin Date	End Date	Count
Current / Historical Observations     (availability statement)	1976-02-01	2022-07-07
Daily Data
Discharge, cubic feet per second	1931-08-04	2022-07-06	33210
Daily Statistics
Discharge, cubic feet per second	1931-08-04	2022-04-18	33131
Monthly Statistics
Discharge, cubic feet per second	1931-08	2022-04
Annual Statistics
Discharge, cubic feet per second	1931	2022
Peak streamflow	1932-04-01	2020-05-02	89
Field measurements	1931-06-18	2022-04-19	281
Field/Lab water-quality samples	1952-10-21	2006-07-12	209
Water-Year Summary	2005	2021	17
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