Challis Lake
Key Takeaway
Challis Lake is classified as low hazard in Idaho. It was completed in 1951 and is 75 years old. Its primary use is irrigation.
Physical Details
| Dam Height | 19 ft (taller than 24.4% in ID) |
| Dam Length | 400 ft |
| Normal Storage | 189 acre-ft |
| Surface Area | 20 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 80 cfs |
| Year Completed | 1951 (75 years old) |
| NID ID | ID00138 |
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
Private
Nearby Dams
Frequently Asked Questions
What is the hazard classification of Challis Lake?
Challis Lake 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 Challis Lake?
Challis Lake is owned by information not available (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Challis Lake built?
Challis Lake was completed in 1951, making it 75 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 Challis Lake?
Challis Lake 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 Challis Lake?
Challis Lake has a dam height of 19 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 Challis Lake last inspected?
Challis Lake was last inspected on July 20, 2020. Inspection dates indicate when a formal review occurred, not the results of that inspection.