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DESCRIPTION:

Latitude 42°23'53",   Longitude 71°16'26"   NAD27

Middlesex County, Massachusetts, Hydrologic Unit 01090001

Drainage area: 6.86 square miles

Contributing drainage area: 6.86 square miles,

Datum of gage: 149.20 feet above   NAVD88.

AVAILABLE DATA:

Data Type	Begin Date	End Date	Count
Current / Historical Observations     (availability statement)	1997-10-01	2026-01-23
Daily Data
Temperature, water, degrees Celsius -- RESERVOIR OUTLET	1997-09-30	2026-01-22	29368
Temperature, air, degrees Celsius	2001-07-11	2026-01-22	25479
Precipitation, total, inches	2001-10-31	2026-01-22	8331
Discharge, cubic feet per second	1997-10-01	2026-01-22	10341
Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius -- RESERVOIR OUTLET	1997-09-30	2026-01-22	28304
Reservoir storage, million gallons -- GATE HOUSE	2005-09-30	2026-01-22	6672
Daily Statistics
Temperature, water, degrees Celsius -- RESERVOIR OUTLET	1997-09-30	2024-05-27	9200
Temperature, air, degrees Celsius	2001-07-11	2021-11-03	7403
Discharge, cubic feet per second	1997-10-01	2025-08-05	10171
Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius -- RESERVOIR OUTLET	1997-09-30	2024-05-27	8890
Reservoir storage, million gallons -- GATE HOUSE	2005-09-30	2021-10-08	5577
Monthly Statistics
Temperature, water, degrees Celsius -- RESERVOIR OUTLET	1997-09	2024-05
Temperature, air, degrees Celsius	2001-07	2021-11
Discharge, cubic feet per second	1997-10	2025-08
Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius -- RESERVOIR OUTLET	1997-09	2024-05
Reservoir storage, million gallons -- GATE HOUSE	2005-09	2021-10
Annual Statistics
Temperature, water, degrees Celsius -- RESERVOIR OUTLET	1997	2024
Temperature, air, degrees Celsius	2001	2022
Discharge, cubic feet per second	1998	2025
Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius -- RESERVOIR OUTLET	1997	2024
Reservoir storage, million gallons -- GATE HOUSE	2005	2022
Peak streamflow	1998-06-18	2023-06-13	25
Field measurements	1997-03-06	2025-11-20	195
Field/Lab water-quality samples (Legacy QW is frozen as of March 2024, newer data may be found on MLP)	1997-03-06	2024-02-26	116
Water-Year Summary	2005	2024	16
Revisions	Loading...

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