Mcmahon Dam

Madison, Virginia· 39 ft tall
Unknown Private

Key Takeaway

Mcmahon Dam is classified as unknown in Virginia.

Physical Details

Dam Height 39 ft (taller than 85.8% in VA)
Max Storage48 acre-ft
Normal Storage37 acre-ft
Surface Area3 acres
Drainage Area0 sq mi
NID IDVA113023

Safety Information

Unknown

Hazard potential has not been determined.

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

Emergency Action Plan: No
State Regulated: Yes
Regulatory Agency: Department of Conservation and Recreation

Ownership

MCMAHON, LINDA G SEVERY & JEROLD R TRUSTEES

Private

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Frequently Asked Questions

What is the hazard classification of Mcmahon Dam?

Mcmahon Dam is classified as Unknown. Hazard potential has not been determined. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.

Who owns and operates Mcmahon Dam?

Mcmahon Dam is owned by MCMAHON, LINDA G SEVERY & JEROLD R TRUSTEES (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

How tall is Mcmahon Dam?

Mcmahon Dam has a dam height of 39 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.

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.