Boulder - North
Key Takeaway
Boulder - North is classified as high hazard in Colorado. It was completed in 1955 and is 71 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 | 44 ft (taller than 84.9% in CO) |
| Dam Length | 2,652 ft |
| Dam Type | Earth |
| Max Storage | 17.7K acre-ft |
| Normal Storage | 13.3K acre-ft |
| Surface Area | 684 acres |
| Drainage Area | 14 sq mi |
| Max Discharge | 25,500 cfs |
| Year Completed | 1955 (71 years old) |
| NID ID | CO00215 |
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
CITY OF BOULDER (KEVIN CLARK)
Local Government
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Low Hazard 37 ftFrequently Asked Questions
What is the hazard classification of Boulder - North?
Boulder - North 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 Boulder - North?
Boulder - North is owned by CITY OF BOULDER (KEVIN CLARK) (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Boulder - North built?
Boulder - North was completed in 1955, making it 71 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 Boulder - North?
Boulder - North serves the following purposes: Water Supply, Irrigation, Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Boulder - North?
Boulder - North has a dam height of 44 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 Boulder - North last inspected?
Boulder - North was last inspected on November 3, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.