Antero
Key Takeaway
Antero is classified as high hazard in Colorado. It was completed in 1909 and is 117 years old. Its primary use is water supply. 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 | 39 ft (taller than 80.5% in CO) |
| Dam Length | 4,190 ft |
| Dam Type | Earth |
| Max Storage | 92.7K acre-ft |
| Normal Storage | 44.7K acre-ft |
| Surface Area | 3,446 acres |
| Drainage Area | 200 sq mi |
| Max Discharge | 45,000 cfs |
| Year Completed | 1909 (117 years old) |
| Year Modified | 2017 |
| NID ID | CO00351 |
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
DENVER BOARD OF WATER COMMISSIONERS
Public Utility
Nearby Dams
Frequently Asked Questions
What is the hazard classification of Antero?
Antero 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 Antero?
Antero is owned by DENVER BOARD OF WATER COMMISSIONERS (Public Utility). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Antero built?
Antero was completed in 1909, making it 117 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 Antero?
Antero serves the following purposes: Water Supply, Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Antero?
Antero has a dam height of 39 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 Antero last inspected?
Antero was last inspected on October 13, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.