Chilco
Key Takeaway
Chilco is classified as significant hazard in Idaho. It was completed in 1907 and is 119 years old. Its primary use is other. 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 | 90 ft |
| Normal Storage | 340 acre-ft |
| Surface Area | 43 acres |
| Drainage Area | 2 sq mi |
| Max Discharge | 240 cfs |
| Year Completed | 1907 (119 years old) |
| Year Modified | 2013 |
| NID ID | ID00152 |
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 Chilco?
Chilco 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 Chilco?
Chilco is owned by information not available (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Chilco built?
Chilco was completed in 1907, making it 119 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 Chilco?
Chilco serves the following purposes: Other. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Chilco?
Chilco 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 Chilco last inspected?
Chilco was last inspected on May 15, 2017. Inspection dates indicate when a formal review occurred, not the results of that inspection.