Cabot Station

Cabot Station is a gravity dam located in Franklin County, Massachusetts, built in 1916. It carries a Low hazard potential classification and has a satisfactory condition assessment.

About Cabot Station

The primary purpose of Cabot Station is hydroelectric. The dam generates hydroelectric power by channeling water through turbines, converting the energy of flowing water into electricity. The dam is owned by Firstlight Power Services Llc (public utility). It impounds the Turners Falls Canal near Greenfield.

The dam stands 35 feet tall and stretches 235 feet across, creates a reservoir covering 2,000 acres, has a maximum storage capacity of 21,500 acre-feet, and collects water from a drainage area of 7,163 square miles. Completed in 1916, the structure is over a century old.

This dam has a low hazard potential classification, meaning that failure would cause minimal damage, limited primarily to the dam owner's property, with no expected loss of life. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. The most recent inspection on record was 08/02/2022.

At 35 feet, this dam is taller than 82% of dams nationwide.

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Low HazardSatisfactory ConditionEmergency Action Plan: Not Required

Location

StateMassachusetts
CountyFranklin
Nearest CityGreenfield
River/StreamTurners Falls Canal
Coordinates42.58750, -72.57930

Physical Characteristics

Dam TypeGravity
NID Height35 ft
Dam Height35 ft
Dam Length235 ft
Year Completed1916 (110 years old)

Storage & Hydraulics

NID Storage21,500 acre-ft
Max Storage21,500 acre-ft
Normal Storage16,600 acre-ft
Surface Area2,000 acres
Drainage Area7,163 sq mi
Spillway TypeNone

Ownership & Safety

PurposeHydroelectric
OwnerFirstLight Power Services LLC
Owner TypePublic Utility
Hazard ClassificationLow
Condition AssessmentSatisfactory
Last Inspection08/02/2022
Emergency Action PlanNot Required

Identifiers

NID IDMA00849
Federal IDMA00849S004
More InfoState Dam Safety Program

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