Harper Lake

Boulder County, Colorado (near LOUISVILLE)

River/Stream: COAL CREEK-TR

High Hazard

Failure would likely cause loss of life

Key Facts

Dam Type
Earth
Height
11 ft
Dam Length
2,200 ft
Reservoir Storage
843 acre-ft
Year Completed
1985
Primary Purpose
Water Supply
Owner Type
Local Government
Max Discharge
460 cfs

Condition Assessment

SatisfactoryLast inspected: 2022-10-11

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
CO02674
State
Colorado (CO)
Coordinates
39.98141, -105.16100
Age
41 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.