Laprele
Key Takeaway
Laprele is classified as high hazard in Wyoming. It was completed in 1909 and is 117 years old. Its primary use is irrigation. 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 | 135 ft (taller than 98.9% in WY) |
| Dam Length | 320 ft |
| Dam Type | Concrete |
| Max Storage | 26.9K acre-ft |
| Normal Storage | 20.0K acre-ft |
| Surface Area | 728 acres |
| Drainage Area | 188 sq mi |
| Max Discharge | 7,810 cfs |
| Year Completed | 1909 (117 years old) |
| Year Modified | 1980 |
| NID ID | WY00204 |
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
LAPRELE IRRIGATION DISTRICT
Private
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Low Hazard 37 ftFrequently Asked Questions
What is the hazard classification of Laprele?
Laprele 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 Laprele?
Laprele is owned by LAPRELE IRRIGATION DISTRICT (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Laprele built?
Laprele was completed in 1909, making it 117 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 Laprele?
Laprele 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 Laprele?
Laprele has a dam height of 135 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 Laprele last inspected?
Laprele was last inspected on September 8, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.