Rattlesnake
Key Takeaway
Rattlesnake is classified as high hazard in Colorado. It was completed in 1952 and is 74 years old. Its primary use is irrigation. High hazard means loss of life is likely if the dam fails — it does not indicate the dam's current condition. Learn more.
Physical Details
| Dam Height | 130 ft (taller than 97.5% in CO) |
| Dam Length | 1,100 ft |
| Dam Type | Rockfill |
| Max Storage | 3.2K acre-ft |
| Normal Storage | 2.2K acre-ft |
| Surface Area | 124 acres |
| Drainage Area | 4 sq mi |
| Max Discharge | 10,250 cfs |
| Year Completed | 1952 (74 years old) |
| NID ID | CO01663 |
Safety Information
Loss of human life is likely if the dam fails.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
RECLAMATION
Federal Government
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High Hazard 60 ftFrequently Asked Questions
What is the hazard classification of Rattlesnake?
Rattlesnake is classified as High Hazard. Loss of human life is likely if the dam fails. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Rattlesnake?
Rattlesnake is owned by RECLAMATION (Federal Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Rattlesnake built?
Rattlesnake was completed in 1952, making it 74 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 Rattlesnake?
Rattlesnake 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 Rattlesnake?
Rattlesnake has a dam height of 130 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 Rattlesnake last inspected?
Rattlesnake was last inspected on May 18, 2020. Inspection dates indicate when a formal review occurred, not the results of that inspection.