Weir and Johnson
Key Takeaway
Weir and Johnson is classified as high hazard in Colorado. It was completed in 1974 and is 52 years old. Its primary use is recreation. 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 | 21 ft (taller than 40.7% in CO) |
| Dam Length | 167 ft |
| Dam Type | Earth |
| Max Storage | 860 acre-ft |
| Normal Storage | 567 acre-ft |
| Surface Area | 45 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 425 cfs |
| Year Completed | 1974 (52 years old) |
| NID ID | CO00643 |
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
WEIR & JOHNSON DITCH & RESERVOIR CO.
Private
Nearby Dams
Frequently Asked Questions
What is the hazard classification of Weir and Johnson?
Weir and Johnson 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 Weir and Johnson?
Weir and Johnson is owned by WEIR & JOHNSON DITCH & RESERVOIR CO. (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Weir and Johnson built?
Weir and Johnson was completed in 1974, making it 52 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 Weir and Johnson?
Weir and Johnson serves the following purposes: Recreation, Irrigation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Weir and Johnson?
Weir and Johnson has a dam height of 21 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 Weir and Johnson last inspected?
Weir and Johnson was last inspected on July 7, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.