East Portal Dam
Key Takeaway
East Portal Dam is classified as high hazard in Colorado. It was completed in 1947 and is 79 years old. 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 Length | 245 ft |
| Dam Type | Earth |
| Normal Storage | 0 acre-ft |
| Surface Area | 2 acres |
| Year Completed | 1947 (79 years old) |
| NID ID | CO02363 |
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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Low Hazard 17 ftFrequently Asked Questions
What is the hazard classification of East Portal Dam?
East Portal Dam 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 East Portal Dam?
East Portal Dam is owned by RECLAMATION (Federal Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was East Portal Dam built?
East Portal Dam was completed in 1947, making it 79 years old. Many U.S. dams were built between the 1930s and 1970s during a period of major infrastructure investment.
When was East Portal Dam last inspected?
East Portal Dam was last inspected on August 5, 2020. Inspection dates indicate when a formal review occurred, not the results of that inspection.