Lake Montclair Dam

Powells Creek· Prince William, Virginia· Earth· 74 ft tall

High Hazard Recreation Private

Key Takeaway

Lake Montclair Dam is classified as high hazard in Virginia. Its primary use is recreation. High hazard means loss of life is likely if the dam fails — it does not indicate the dam's current condition. Learn more.

Physical Details

Dam Height	74 ft (taller than 97.3% in VA)
Dam Length	650 ft
Dam Type	Earth
Max Storage	5.9K acre-ft
Normal Storage	2.2K acre-ft

Surface Area	85 acres
Drainage Area	11 sq mi
NID ID	VA153003

Safety Information

High Hazard

Loss of human life is likely if the dam fails.

Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?

Emergency Action Plan: Yes

Last Inspection: June 9, 2022

State Regulated: Yes

Regulatory Agency: Department of Conservation and Recreation

Ownership

MPOA;Montclair Property Owners Association

Private

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Prince William Parkway Regional Swm

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Potomac Club Regional Pond Dam

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Locust Shade Park Dam

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Camp 5 Dam

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Possum Point Ash Dam #E

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Omisol Dam

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Frequently Asked Questions

What is the hazard classification of Lake Montclair Dam?

Lake Montclair Dam is classified as High Hazard. Loss of human life is likely if the dam fails. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.

Who owns and operates Lake Montclair Dam?

Lake Montclair Dam is owned by MPOA;Montclair Property Owners Association (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

What is the primary purpose of Lake Montclair Dam?

Lake Montclair Dam serves the following purposes: Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.

How tall is Lake Montclair Dam?

Lake Montclair Dam has a dam height of 74 ft. Dam height is measured from the natural streambed at the downstream toe to the top of the dam, and may differ from the visible height.

When was Lake Montclair Dam last inspected?

Lake Montclair Dam was last inspected on June 9, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.

Data from the National Inventory of Dams (NID) maintained by the US Army Corps of Engineers. Dam conditions may have changed since the last update. This site is not affiliated with USACE. Do not use for emergency planning — contact your local dam safety program.