Allen Lake

Boulder County, Colorado (near LONGMONT)

River/Stream: LEFT HAND CREEK-OS

Significant Hazard

Failure could cause economic loss or disruption

Key Facts

Dam Type
Earth
Height
24 ft
Dam Length
1,525 ft
Reservoir Storage
865 acre-ft
Year Completed
1928
Primary Purpose
Irrigation
Owner Type
Private
Max Discharge
8,821 cfs

Condition Assessment

SatisfactoryLast inspected: 2022-06-23

Hazard Classification: Significant — 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
CO00169
State
Colorado (CO)
Coordinates
40.14047, -105.28410
Age
98 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.