Hoefer-Pierson Reservoir
Key Takeaway
Hoefer-Pierson Reservoir is classified as significant hazard in Oregon. It was completed in 1970 and is 56 years old. Its primary use is irrigation. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 23 ft (taller than 39.8% in OR) |
| Dam Length | 376 ft |
| Dam Type | Earth |
| Max Storage | 16 acre-ft |
| Normal Storage | 16 acre-ft |
| Surface Area | 3 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 652 cfs |
| Year Completed | 1970 (56 years old) |
| NID ID | OR01933 |
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
JAMES & LINDA PIERSON
Private
Nearby Dams
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Significant Hazard 32 ftFrequently Asked Questions
What is the hazard classification of Hoefer-Pierson Reservoir?
Hoefer-Pierson Reservoir 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 Hoefer-Pierson Reservoir?
Hoefer-Pierson Reservoir is owned by JAMES & LINDA PIERSON (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Hoefer-Pierson Reservoir built?
Hoefer-Pierson Reservoir was completed in 1970, making it 56 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 Hoefer-Pierson Reservoir?
Hoefer-Pierson Reservoir 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 Hoefer-Pierson Reservoir?
Hoefer-Pierson Reservoir has a dam height of 23 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 Hoefer-Pierson Reservoir last inspected?
Hoefer-Pierson Reservoir was last inspected on October 22, 2019. Inspection dates indicate when a formal review occurred, not the results of that inspection.