Helms Reservoir
Key Takeaway
Helms Reservoir is classified as low hazard in Oregon. It was completed in 1968 and is 58 years old. Its primary use is irrigation.
Physical Details
| Dam Height | 25 ft (taller than 43.9% in OR) |
| Dam Length | 440 ft |
| Dam Type | Earth |
| Max Storage | 120 acre-ft |
| Normal Storage | 91 acre-ft |
| Surface Area | 14 acres |
| Drainage Area | 2 sq mi |
| Max Discharge | 140 cfs |
| Year Completed | 1968 (58 years old) |
| NID ID | OR00455 |
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
MILLER FORESTS, INC.
Private
Nearby Dams
Frequently Asked Questions
What is the hazard classification of Helms Reservoir?
Helms 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 Helms Reservoir?
Helms Reservoir is owned by MILLER FORESTS, INC. (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Helms Reservoir built?
Helms Reservoir was completed in 1968, making it 58 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 Helms Reservoir?
Helms 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 Helms Reservoir?
Helms Reservoir has a dam height of 25 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 Helms Reservoir last inspected?
Helms Reservoir was last inspected on December 5, 2018. Inspection dates indicate when a formal review occurred, not the results of that inspection.