Thompson No 1 Main Dam
Key Takeaway
Thompson No 1 Main Dam is classified as significant hazard in Idaho. It was completed in 1967 and is 59 years old. Its primary use is irrigation. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 17 ft (taller than 16.7% in ID) |
| Dam Length | 580 ft |
| Normal Storage | 54 acre-ft |
| Surface Area | 6 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 3 cfs |
| Year Completed | 1967 (59 years old) |
| Year Modified | 1996 |
| NID ID | ID00147 |
Safety Information
No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
Private
Nearby Dams
Frequently Asked Questions
What is the hazard classification of Thompson No 1 Main Dam?
Thompson No 1 Main Dam is classified as Significant Hazard. No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Thompson No 1 Main Dam?
Thompson No 1 Main Dam is owned by information not available (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Thompson No 1 Main Dam built?
Thompson No 1 Main Dam was completed in 1967, making it 59 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 Thompson No 1 Main Dam?
Thompson No 1 Main Dam 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 Thompson No 1 Main Dam?
Thompson No 1 Main Dam has a dam height of 17 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 Thompson No 1 Main Dam last inspected?
Thompson No 1 Main Dam was last inspected on July 19, 2017. Inspection dates indicate when a formal review occurred, not the results of that inspection.