Flatiron
Key Takeaway
Flatiron is classified as high hazard in Colorado. It was completed in 1953 and is 73 years old. Its primary use is hydroelectric. 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 | 86 ft (taller than 94.7% in CO) |
| Dam Length | 1,725 ft |
| Dam Type | Earth |
| Max Storage | 1.1K acre-ft |
| Normal Storage | 760 acre-ft |
| Surface Area | 381,500 acres |
| Drainage Area | 7 sq mi |
| Year Completed | 1953 (73 years old) |
| NID ID | CO01654 |
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 30 ftFrequently Asked Questions
What is the hazard classification of Flatiron?
Flatiron 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 Flatiron?
Flatiron is owned by RECLAMATION (Federal Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Flatiron built?
Flatiron was completed in 1953, making it 73 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 Flatiron?
Flatiron serves the following purposes: Hydroelectric, Irrigation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Flatiron?
Flatiron has a dam height of 86 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 Flatiron last inspected?
Flatiron was last inspected on May 19, 2020. Inspection dates indicate when a formal review occurred, not the results of that inspection.