Lost
Key Takeaway
Lost is classified as low hazard in Oklahoma. It was completed in 1959 and is 67 years old. Its primary use is flood risk reduction.
Physical Details
| Dam Height | 20 ft (taller than 11.5% in OK) |
| Dam Length | 505 ft |
| Dam Type | Earth |
| Max Storage | 50 acre-ft |
| Normal Storage | 30 acre-ft |
| Surface Area | 10 acres |
| Max Discharge | 150 cfs |
| Year Completed | 1959 (67 years old) |
| NID ID | OK21284 |
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
DOI FWS
Federal Government
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Low Hazard 40 ftFrequently 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 DOI FWS (Federal Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Lost built?
Lost was completed in 1959, making it 67 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: 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 20 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 January 1, 1980. Inspection dates indicate when a formal review occurred, not the results of that inspection.