Lake Helene Dam

Montgomery County, Maryland (near Gaithersburg)

River/Stream: Muddy Branch-TR

High Hazard

Failure would likely cause loss of life

Key Facts

Dam Type
Earth
Height
27 ft
Dam Length
420 ft
Reservoir Storage
177 acre-ft
Year Completed
1950
Primary Purpose
Recreation
Owner Type
Local Government
Max Discharge
253 cfs

Condition Assessment

SatisfactoryLast inspected: 2024-04-18

Hazard Classification: High — This describes the potential consequences of dam failure, not the likelihood of failure.

Condition Assessment: Satisfactory — This describes the current physical condition of the dam based on the most recent inspection.

Location

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Quick Stats

NID ID
MD00325
State
Maryland (MD)
Coordinates
39.11933, -77.24070
Age
76 years

Nearby Dams

External Resources

Data sourced from the National Inventory of Dams (NID). Information may not reflect the most current status of this dam. Hazard classification reflects potential consequences of failure, not the likelihood of failure or the current condition.