Nimmo No. 8
Key Takeaway
Nimmo No. 8 is classified as low hazard in Wyoming. It was completed in 1942 and is 84 years old. Its primary use is water supply.
Physical Details
| Dam Height | 26 ft (taller than 46.3% in WY) |
| Dam Length | 620 ft |
| Dam Type | Earth |
| Max Storage | 71 acre-ft |
| Normal Storage | 71 acre-ft |
| Surface Area | 8 acres |
| Year Completed | 1942 (84 years old) |
| NID ID | WY02594 |
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
TRUE RANCHES LLC
Private
Nearby Dams
Frequently Asked Questions
What is the hazard classification of Nimmo No. 8?
Nimmo No. 8 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 Nimmo No. 8?
Nimmo No. 8 is owned by TRUE RANCHES LLC (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Nimmo No. 8 built?
Nimmo No. 8 was completed in 1942, making it 84 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 Nimmo No. 8?
Nimmo No. 8 serves the following purposes: Water Supply. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Nimmo No. 8?
Nimmo No. 8 has a dam height of 26 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 Nimmo No. 8 last inspected?
Nimmo No. 8 was last inspected on August 16, 2023. Inspection dates indicate when a formal review occurred, not the results of that inspection.