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DESCRIPTION:

Latitude 42°38'03",   Longitude 71°39'30"   NAD27

Middlesex County, Massachusetts, Hydrologic Unit 01070004

Drainage area: 65.9 square miles

Contributing drainage area: 63.7 square miles,

Datum of gage: 243.50 feet above   NAVD88.

AVAILABLE DATA:

Data Type	Begin Date	End Date	Count
Current / Historical Observations     (availability statement)	1990-10-01	2024-12-04
Daily Data
Discharge, cubic feet per second	1949-10-01	2024-12-03	27458
Daily Statistics
Discharge, cubic feet per second	1949-10-01	2023-12-13	27102
Monthly Statistics
Discharge, cubic feet per second	1949-10	2023-12
Annual Statistics
Discharge, cubic feet per second	1950	2024
Peak streamflow	1950-03-30	2022-12-24	74
Field measurements	1951-02-19	2024-10-09	289
Field/Lab water-quality samples	1955-10-04	1995-04-24	200
Water-Year Summary	2005	2023	19
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