Lost
Key Takeaway
Lost is classified as low hazard in Wyoming. It was completed in 1966 and is 60 years old. Its primary use is fire protection.
Physical Details
| Dam Height | 29 ft (taller than 59.6% in WY) |
| Dam Length | 388 ft |
| Dam Type | Earth |
| Max Storage | 40 acre-ft |
| Normal Storage | 23 acre-ft |
| Surface Area | 3 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 372 cfs |
| Year Completed | 1966 (60 years old) |
| NID ID | WY01441 |
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
USDI BLM
Federal Government
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Low HazardFrequently Asked Questions
What is the hazard classification of Lost?
Lost 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 Lost?
Lost is owned by USDI BLM (Federal Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Lost built?
Lost was completed in 1966, making it 60 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 Lost?
Lost serves the following purposes: Fire Protection, Stock, Or Small Fish Pond, Flood Risk Reduction. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Lost?
Lost has a dam height of 29 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 Lost last inspected?
Lost was last inspected on June 27, 2023. Inspection dates indicate when a formal review occurred, not the results of that inspection.