Jack Dam
Key Takeaway
Jack Dam is classified as low hazard in Wyoming. It was completed in 1971 and is 55 years old. Its primary use is debris control.
Physical Details
| Dam Length | 345 ft |
| Dam Type | Gravity |
| Max Storage | 340 acre-ft |
| Normal Storage | 31 acre-ft |
| Surface Area | 15 acres |
| Year Completed | 1971 (55 years old) |
| NID ID | WY01455 |
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 BLM
Federal Government
Nearby Dams
Frequently Asked Questions
What is the hazard classification of Jack Dam?
Jack Dam 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 Jack Dam?
Jack Dam is owned by DOI BLM (Federal Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Jack Dam built?
Jack Dam was completed in 1971, making it 55 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 Jack Dam?
Jack Dam serves the following purposes: Debris Control. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
When was Jack Dam last inspected?
Jack Dam was last inspected on July 22, 2017. Inspection dates indicate when a formal review occurred, not the results of that inspection.