Carpenter Reservoir Dike

Carpenter Reservoir Dike is an earth dam located in Worcester County, Massachusetts, built in 1888. It carries a Low hazard potential classification and has a poor condition assessment.

About Carpenter Reservoir Dike

The primary purpose of Carpenter Reservoir Dike is water supply. The dam stores water for municipal, industrial, or agricultural use, helping ensure a reliable supply for the surrounding area. The dam is owned by Whitinsville Water Company (private). It impounds the Mumford River near Northbridge.

The dam stands 28 feet tall and stretches 280 feet across, creates a reservoir covering 79 acres, has a maximum storage capacity of 2,271 acre-feet, and collects water from a drainage area of 5 square miles. Completed in 1888, 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 poor, meaning the dam has recognized safety deficiencies that require remediation to address risks. The most recent inspection on record was 11/20/2020.

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Low HazardPoor ConditionEmergency Action Plan: Not Required

Location

StateMassachusetts
CountyWorcester
Nearest CityNorthbridge
River/StreamMumford River
Coordinates42.12534, -71.68279

Physical Characteristics

Dam TypeEarth
NID Height28 ft
Dam Length280 ft
Year Completed1888 (138 years old)

Storage & Hydraulics

NID Storage2,271 acre-ft
Max Storage2,271 acre-ft
Normal Storage2,218 acre-ft
Surface Area79 acres
Drainage Area5 sq mi
Spillway TypeNone

Ownership & Safety

PurposeWater Supply
OwnerWhitinsville Water Company
Owner TypePrivate
Hazard ClassificationLow
Condition AssessmentPoor
Last Inspection11/20/2020
Emergency Action PlanNot Required

Identifiers

NID IDMA00943
Federal IDMA00893S001
More InfoState Dam Safety Program

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