Mirror Lake Dam

Adams County, North Dakota (near Hettinger)

River/Stream: Flat Creek

Significant Hazard

Failure could cause economic loss or disruption

Key Facts

Dam Type
Earth
Height
19 ft
Dam Length
800 ft
Reservoir Storage
895 acre-ft
Year Completed
1909
Primary Purpose
Recreation
Owner Type
Local Government
Max Discharge

Condition Assessment

Not RatedLast inspected: 2022-08-31

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

Condition Assessment: Not Rated — This describes the current physical condition of the dam based on the most recent inspection.

Location

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Quick Stats

NID ID
ND00137
State
North Dakota (ND)
Coordinates
45.99399, -102.63482
Age
117 years

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.