New Dam

New Dam is a concrete dam located in York County, Maine, built in 1910. It carries a High hazard potential classification and has a fair condition assessment.

About New Dam

The primary purpose of New Dam 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 Kei (usa) Power Management Inc. (private). It impounds the Mousam.

The dam stands 45 feet tall and stretches 705 feet across, creates a reservoir covering 473 acres, has a maximum storage capacity of 5,800 acre-feet, and collects water from a drainage area of 99 square miles. Completed in 1910, the structure is over a century old.

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 fair — the dam has minor deficiencies that are being addressed or do not pose an immediate safety threat. An emergency action plan is in place for this dam. The most recent inspection on record was 11/09/2023.

At 45 feet, this dam is taller than 91% of dams nationwide.

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 Maine 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 HazardFair ConditionEmergency Action Plan: Yes

Location

StateMaine
CountyYork
River/StreamMousam
Coordinates43.42242, -70.66500

Physical Characteristics

Dam TypeConcrete
NID Height45 ft
Dam Height45 ft
Dam Length705 ft
Year Completed1910 (116 years old)

Storage & Hydraulics

NID Storage5,800 acre-ft
Max Storage5,800 acre-ft
Normal Storage5,350 acre-ft
Surface Area473 acres
Drainage Area99 sq mi

Ownership & Safety

PurposeHydroelectric
OwnerKEI (USA) Power Management Inc.
Owner TypePrivate
Hazard ClassificationHigh
Condition AssessmentFair
Last Inspection11/09/2023
Emergency Action PlanYes

Identifiers

NID IDME00183
Federal IDME00183
More InfoState Dam Safety Program

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