East Branch
Key Takeaway
East Branch is classified as significant hazard in Colorado. It was completed in 1971 and is 55 years old. Its primary use is water supply. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 120 ft (taller than 97.2% in CO) |
| Dam Length | 860 ft |
| Dam Type | Earth |
| Max Storage | 3.0K acre-ft |
| Normal Storage | 2.0K acre-ft |
| Surface Area | 68 acres |
| Drainage Area | 2 sq mi |
| Max Discharge | 550 cfs |
| Year Completed | 1971 (55 years old) |
| NID ID | CO00708 |
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
FREEPORT MCMORAN (HICKMAN, RON)
Private
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Significant Hazard 41 ftFrequently Asked Questions
What is the hazard classification of East Branch?
East Branch 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 East Branch?
East Branch is owned by FREEPORT MCMORAN (HICKMAN, RON) (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was East Branch built?
East Branch was completed in 1971, making it 55 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 East Branch?
East Branch serves the following purposes: Water Supply. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is East Branch?
East Branch has a dam height of 120 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 East Branch last inspected?
East Branch was last inspected on September 13, 2021. Inspection dates indicate when a formal review occurred, not the results of that inspection.