Dragonfly Lake

Colorado (near LONGMONT)

River/Stream: ST. VRAIN-OS

Low Hazard

Failure would cause minimal damage

Key Facts

Dam Type
Earth
Height
12 ft
Dam Length
850 ft
Reservoir Storage
133 acre-ft
Year Completed
1970
Primary Purpose
Recreation
Owner Type
Local Government
Max Discharge
800 cfs

Condition Assessment

Fair

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

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

Quick Stats

NID ID
CO03043
State
Colorado (CO)
Age
56 years

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.