Fontenelle
Key Takeaway
Fontenelle is classified as high hazard in Wyoming. It was completed in 1963 and is 63 years old. Its primary use is fish and wildlife pond. 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 | 139 ft (taller than 99% in WY) |
| Dam Length | 5,450 ft |
| Dam Type | Earth |
| Max Storage | 405.2K acre-ft |
| Normal Storage | 345.4K acre-ft |
| Surface Area | 8,058 acres |
| Drainage Area | 4,175 sq mi |
| Max Discharge | 20,000 cfs |
| Year Completed | 1963 (63 years old) |
| NID ID | WY01389 |
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
RECLAMATION
Federal Government
Frequently Asked Questions
What is the hazard classification of Fontenelle?
Fontenelle 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 Fontenelle?
Fontenelle is owned by RECLAMATION (Federal Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Fontenelle built?
Fontenelle was completed in 1963, making it 63 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 Fontenelle?
Fontenelle serves the following purposes: Fish And Wildlife Pond, Recreation, Hydroelectric, Water Supply. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Fontenelle?
Fontenelle has a dam height of 139 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 Fontenelle last inspected?
Fontenelle was last inspected on October 30, 2019. Inspection dates indicate when a formal review occurred, not the results of that inspection.