Deerfield No. 3

Deerfield No. 3 is a concrete dam located in Franklin County, Massachusetts, built in 1912. It carries a Low hazard potential classification and has a satisfactory condition assessment.

About Deerfield No. 3

The primary purpose of Deerfield No. 3 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 Great River Hydro, Llc (private). It impounds the Deerfield River near Shelburne Falls.

The dam stands 12 feet tall and stretches 475 feet across, creates a reservoir covering 42 acres, has a maximum storage capacity of 551 acre-feet, and collects water from a drainage area of 500 square miles. Completed in 1912, 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 09/14/2022.

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Low HazardSatisfactory ConditionEmergency Action Plan: Not Required

Location

StateMassachusetts
CountyFranklin
Nearest CityShelburne Falls
River/StreamDeerfield River
Coordinates42.60167, -72.73885

Physical Characteristics

Dam TypeConcrete
NID Height12 ft
Dam Height12 ft
Dam Length475 ft
Year Completed1912 (114 years old)

Storage & Hydraulics

NID Storage551 acre-ft
Max Storage551 acre-ft
Normal Storage551 acre-ft
Surface Area42 acres
Drainage Area500 sq mi
Max Discharge23,300 cfs
Spillway TypeUncontrolled

Ownership & Safety

PurposeHydroelectric
OwnerGreat River Hydro, LLC
Owner TypePrivate
Hazard ClassificationLow
Condition AssessmentSatisfactory
Last Inspection09/14/2022
Emergency Action PlanNot Required

Identifiers

NID IDMA00461
Federal IDMA00461
More InfoState Dam Safety Program

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