Upper Lone Tree
Key Takeaway
Upper Lone Tree is classified as low hazard in Colorado. It was completed in 1895 and is 131 years old. Its primary use is irrigation.
Physical Details
| Dam Height | 17 ft (taller than 26.3% in CO) |
| Dam Length | 1,190 ft |
| Dam Type | Earth |
| Max Storage | 74 acre-ft |
| Normal Storage | 38 acre-ft |
| Surface Area | 8 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 176 cfs |
| Year Completed | 1895 (131 years old) |
| NID ID | CO02204 |
Safety Information
No probable loss of human life and low economic/environmental losses expected.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
CANON HEIGHTS IRR & RESERVOIR CO. (BUNNY TREAT)
Private
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Significant Hazard 48 ftFrequently Asked Questions
What is the hazard classification of Upper Lone Tree?
Upper Lone Tree is classified as Low Hazard. No probable loss of human life and low economic/environmental losses expected. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Upper Lone Tree?
Upper Lone Tree is owned by CANON HEIGHTS IRR & RESERVOIR CO. (BUNNY TREAT) (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Upper Lone Tree built?
Upper Lone Tree was completed in 1895, making it 131 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 Upper Lone Tree?
Upper Lone Tree serves the following purposes: Irrigation, Fire Protection, Stock, Or Small Fish Pond, Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Upper Lone Tree?
Upper Lone Tree has a dam height of 17 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 Upper Lone Tree last inspected?
Upper Lone Tree was last inspected on August 8, 2019. Inspection dates indicate when a formal review occurred, not the results of that inspection.