Dark Brook Reservoir Dike A

Dark Brook Reservoir Dike A is an earth dam located in Worcester County, Massachusetts, built in 1950. It carries a High hazard potential classification and has a satisfactory condition assessment.

About Dark Brook Reservoir Dike A

The primary purpose of Dark Brook Reservoir Dike A is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Auburn Water District (local government). It impounds the Dark Brook near Auburn.

The dam stands 11 feet tall and stretches 375 feet across, creates a reservoir covering 288 acres, has a maximum storage capacity of 4,939 acre-feet, and collects water from a drainage area of 2 square miles. Completed in 1950, the structure is well-established, with more than 75 years of service.

This dam carries a high hazard potential classification, which means that a failure or uncontrolled release of water would likely cause loss of human life. This classification reflects the consequences of failure, not the likelihood — it indicates that people live or work in the area downstream. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. An emergency action plan is in place for this dam. The most recent inspection on record was 12/20/2022.

Living Downstream

If you live or work downstream of this dam, consider taking these steps: learn your local evacuation routes, check whether your county emergency management office has a dam failure inundation map, and sign up for local emergency alerts. The Massachusetts dam safety program can provide more specific information about emergency planning for this structure.

Search for dams near your address to see all dams in your area with hazard classifications and safety data.

High HazardSatisfactory ConditionEmergency Action Plan: Yes

Location

StateMassachusetts
CountyWorcester
Nearest CityAuburn
River/StreamDark Brook
Coordinates42.19819, -71.85884

Physical Characteristics

Dam TypeEarth
NID Height11 ft
Dam Length375 ft
Year Completed1950 (76 years old)

Storage & Hydraulics

NID Storage4,939 acre-ft
Max Storage4,939 acre-ft
Normal Storage2,597 acre-ft
Surface Area288 acres
Drainage Area2 sq mi
Max Discharge775 cfs
Spillway TypeNone

Ownership & Safety

PurposeRecreation
OwnerAuburn Water District
Owner TypeLocal Government
Hazard ClassificationHigh
Condition AssessmentSatisfactory
Last Inspection12/20/2022
Emergency Action PlanYes

Identifiers

NID IDMA02734
Federal IDMA00198S001
More InfoState Dam Safety Program

Nearby Dams