Twombley
Key Takeaway
Twombley is classified as low hazard in Colorado. It was completed in 1931 and is 95 years old. Its primary use is irrigation.
Physical Details
| Dam Height | 13 ft (taller than 14.5% in CO) |
| Dam Length | 630 ft |
| Dam Type | Earth |
| Max Storage | 76 acre-ft |
| Normal Storage | 40 acre-ft |
| Surface Area | 9 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 3,955 cfs |
| Year Completed | 1931 (95 years old) |
| NID ID | CO01141 |
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
MARGARET TWOMBLY
Private
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Low Hazard 11 ftFrequently Asked Questions
What is the hazard classification of Twombley?
Twombley 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 Twombley?
Twombley is owned by MARGARET TWOMBLY (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Twombley built?
Twombley was completed in 1931, making it 95 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 Twombley?
Twombley serves the following purposes: Irrigation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Twombley?
Twombley has a dam height of 13 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 Twombley last inspected?
Twombley was last inspected on October 15, 1984. Inspection dates indicate when a formal review occurred, not the results of that inspection.