Lake Montclair Dam

Lake Montclair Dam is an earth dam located in Prince William County, Virginia. It carries a High hazard potential classification and has a poor condition assessment.

About Lake Montclair Dam

The primary purpose of Lake Montclair Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Mpoa;montclair Property Owners Association (private). It impounds the Powells Creek.

The dam stands 74 feet tall and stretches 650 feet across, creates a reservoir covering 85 acres, has a maximum storage capacity of 5,938 acre-feet, and collects water from a drainage area of 11 square miles.

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 poor, meaning the dam has recognized safety deficiencies that require remediation to address risks. An emergency action plan is in place for this dam. The most recent inspection on record was 06/09/2022.

At 74 feet, this dam is taller than 97% of all dams in the United States.

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 Virginia 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 HazardPoor ConditionEmergency Action Plan: Yes

Location

StateVirginia
CountyPrince William
River/StreamPowells Creek
Coordinates38.61030, -77.34250

Physical Characteristics

Dam TypeEarth
NID Height74 ft
Dam Height74 ft
Dam Length650 ft

Storage & Hydraulics

NID Storage5,938 acre-ft
Max Storage5,938 acre-ft
Normal Storage2,188 acre-ft
Surface Area85 acres
Drainage Area11 sq mi

Ownership & Safety

PurposeRecreation
OwnerMPOA;Montclair Property Owners Association
Owner TypePrivate
Hazard ClassificationHigh
Condition AssessmentPoor
Last Inspection06/09/2022
Emergency Action PlanYes

Identifiers

NID IDVA153003
Federal IDVA153003
More InfoState Dam Safety Program

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