Dragonfly Lake
Key Takeaway
Dragonfly Lake is classified as low hazard in Colorado. It was completed in 1970 and is 56 years old. Its primary use is recreation.
Physical Details
| Dam Height | 12 ft (taller than 11% in CO) |
| Dam Length | 850 ft |
| Dam Type | Earth |
| Max Storage | 133 acre-ft |
| Normal Storage | 95 acre-ft |
| Surface Area | 13 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 800 cfs |
| Year Completed | 1970 (56 years old) |
| Year Modified | 2015 |
| NID ID | CO03043 |
Safety Information
No probable loss of human life and low economic/environmental losses expected.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
BOULDER COUNTY PARKS AND OPEN SPACE (ALEXANDER, RO
Local Government
Frequently Asked Questions
What is the hazard classification of Dragonfly Lake?
Dragonfly Lake is classified as Low Hazard. No probable loss of human life and low economic/environmental losses expected. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Dragonfly Lake?
Dragonfly Lake is owned by BOULDER COUNTY PARKS AND OPEN SPACE (ALEXANDER, RO (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Dragonfly Lake built?
Dragonfly Lake was completed in 1970, making it 56 years old. Many U.S. dams were built between the 1930s and 1970s during a period of major infrastructure investment.
What is the primary purpose of Dragonfly Lake?
Dragonfly Lake serves the following purposes: Recreation, Fish And Wildlife Pond. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Dragonfly Lake?
Dragonfly Lake has a dam height of 12 ft. Dam height is measured from the natural streambed at the downstream toe to the top of the dam, and may differ from the visible height.