Humphreys
Key Takeaway
Humphreys is classified as high hazard in Colorado. It was completed in 1923 and is 103 years old. Its primary use is hydroelectric. 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 | 85 ft (taller than 94.4% in CO) |
| Dam Length | 186 ft |
| Dam Type | Concrete |
| Normal Storage | 842 acre-ft |
| Surface Area | 44 acres |
| Drainage Area | 53 sq mi |
| Max Discharge | 3,225 cfs |
| Year Completed | 1923 (103 years old) |
| NID ID | CO00772 |
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
Wagon Wheel Associates
Private
Nearby Dams
Humphreys - Spillway Dam
Mineral, CO
High Hazard 26 ftHay Press Park - Dam #1
Mineral, CO
Low Hazard 27 ftHay Press Park - Dam #2
Mineral, CO
Low Hazard 8 ftHunters Lake
Mineral, CO
Low Hazard 7 ftMetroz Park, Lower
Mineral, CO
High Hazard 35 ftShaw - North Dam
Mineral, CO
Significant Hazard 25 ftShaw - South Dam
Mineral, CO
Significant Hazard 19 ftGoose Lake
Mineral, CO
Low Hazard 11 ftFrequently Asked Questions
What is the hazard classification of Humphreys?
Humphreys 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 Humphreys?
Humphreys is owned by Wagon Wheel Associates (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Humphreys built?
Humphreys was completed in 1923, making it 103 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 Humphreys?
Humphreys serves the following purposes: Hydroelectric. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Humphreys?
Humphreys has a dam height of 85 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 Humphreys last inspected?
Humphreys was last inspected on July 19, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.