Hartwick Reservoir
Key Takeaway
Hartwick Reservoir is classified as low hazard in Oregon. It was completed in 1956 and is 70 years old. Its primary use is irrigation.
Physical Details
| Dam Height | 28 ft (taller than 54.8% in OR) |
| Dam Length | 540 ft |
| Dam Type | Earth |
| Max Storage | 200 acre-ft |
| Normal Storage | 170 acre-ft |
| Surface Area | 9 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 114 cfs |
| Year Completed | 1956 (70 years old) |
| NID ID | OR00302 |
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
HENRY J. GRASS M.D.
Private
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Low Hazard 14 ftFrequently Asked Questions
What is the hazard classification of Hartwick Reservoir?
Hartwick 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 Hartwick Reservoir?
Hartwick Reservoir is owned by HENRY J. GRASS M.D. (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Hartwick Reservoir built?
Hartwick Reservoir was completed in 1956, making it 70 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 Hartwick Reservoir?
Hartwick 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 Hartwick Reservoir?
Hartwick Reservoir has a dam height of 28 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 Hartwick Reservoir last inspected?
Hartwick Reservoir was last inspected on November 29, 2018. Inspection dates indicate when a formal review occurred, not the results of that inspection.