Upper Diversion Dam #2
Key Takeaway
Upper Diversion Dam #2 is classified as low hazard in Idaho. It was completed in 1982 and is 44 years old. Its primary use is hydroelectric.
Physical Details
| Dam Height | 33 ft (taller than 60.7% in ID) |
| Dam Length | 470 ft |
| Dam Type | Gravity |
| Max Storage | 1.2K acre-ft |
| Normal Storage | 800 acre-ft |
| Surface Area | 100 acres |
| Drainage Area | 9,800 sq mi |
| Max Discharge | 15,000 cfs |
| Year Completed | 1982 (44 years old) |
| NID ID | ID83059 |
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
City of Idaho Falls
Local Government
Nearby Dams
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High Hazard 40 ftFrequently Asked Questions
What is the hazard classification of Upper Diversion Dam #2?
Upper Diversion Dam #2 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 Upper Diversion Dam #2?
Upper Diversion Dam #2 is owned by City of Idaho Falls (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Upper Diversion Dam #2 built?
Upper Diversion Dam #2 was completed in 1982, making it 44 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 Upper Diversion Dam #2?
Upper Diversion Dam #2 serves the following purposes: Hydroelectric, Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Upper Diversion Dam #2?
Upper Diversion Dam #2 has a dam height of 33 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 Upper Diversion Dam #2 last inspected?
Upper Diversion Dam #2 was last inspected on October 20, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.