Twigg Reservoir
Key Takeaway
Twigg Reservoir is classified as low hazard in Oregon. It was completed in 1957 and is 69 years old. Its primary use is irrigation.
Physical Details
| Dam Height | 16 ft (taller than 20.1% in OR) |
| Dam Length | 240 ft |
| Dam Type | Earth |
| Max Storage | 65 acre-ft |
| Normal Storage | 65 acre-ft |
| Surface Area | 15 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 0 cfs |
| Year Completed | 1957 (69 years old) |
| NID ID | OR03732 |
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
JOSEPH TWIGG
Private
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Low Hazard 12 ftFrequently Asked Questions
What is the hazard classification of Twigg Reservoir?
Twigg Reservoir 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 Twigg Reservoir?
Twigg Reservoir is owned by JOSEPH TWIGG (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Twigg Reservoir built?
Twigg Reservoir was completed in 1957, making it 69 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 Twigg Reservoir?
Twigg 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 Twigg Reservoir?
Twigg Reservoir has a dam height of 16 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 Twigg Reservoir last inspected?
Twigg Reservoir was last inspected on November 9, 2016. Inspection dates indicate when a formal review occurred, not the results of that inspection.