Gaynor
Key Takeaway
Gaynor is classified as significant hazard in Colorado. Its primary use is irrigation. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 10 ft (taller than 4.4% in CO) |
| Dam Length | 500 ft |
| Dam Type | Earth |
| Max Storage | 840 acre-ft |
| Normal Storage | 384 acre-ft |
| Surface Area | 70 acres |
| Drainage Area | 3 sq mi |
| Max Discharge | 807 cfs |
| Year Modified | 1960 |
| NID ID | CO00284 |
Safety Information
No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities.
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
Nearby Dams
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Significant Hazard 46 ftGolden Pond No. 3
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High Hazard 34 ftDodd
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Low Hazard 12 ftFrequently Asked Questions
What is the hazard classification of Gaynor?
Gaynor is classified as Significant Hazard. No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Gaynor?
Gaynor 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.
What is the primary purpose of Gaynor?
Gaynor serves the following purposes: Irrigation, Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Gaynor?
Gaynor has a dam height of 10 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.
When was Gaynor last inspected?
Gaynor was last inspected on August 10, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.