Grand Mesa #8
Key Takeaway
Grand Mesa #8 is classified as significant hazard in Colorado. It was completed in 1901 and is 125 years old. Its primary use is irrigation. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 21 ft (taller than 40.7% in CO) |
| Dam Length | 570 ft |
| Dam Type | Earth |
| Max Storage | 678 acre-ft |
| Normal Storage | 384 acre-ft |
| Surface Area | 37 acres |
| Drainage Area | 3 sq mi |
| Max Discharge | 830 cfs |
| Year Completed | 1901 (125 years old) |
| NID ID | CO00827 |
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
GRAND MESA RESERVOIR CO.
Private
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What is the hazard classification of Grand Mesa #8?
Grand Mesa #8 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 Grand Mesa #8?
Grand Mesa #8 is owned by GRAND MESA RESERVOIR CO. (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Grand Mesa #8 built?
Grand Mesa #8 was completed in 1901, making it 125 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 Grand Mesa #8?
Grand Mesa #8 serves the following purposes: Irrigation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Grand Mesa #8?
Grand Mesa #8 has a dam height of 21 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 Grand Mesa #8 last inspected?
Grand Mesa #8 was last inspected on July 21, 2021. Inspection dates indicate when a formal review occurred, not the results of that inspection.