Morrison Dam
Key Takeaway
Morrison Dam is classified as low hazard in Oregon. It was completed in 1911 and is 115 years old. Its primary use is water supply.
Physical Details
| Dam Length | 425 ft |
| Dam Type | Gravity |
| Max Storage | 115 acre-ft |
| Normal Storage | 115 acre-ft |
| Surface Area | 16 acres |
| Drainage Area | 3 sq mi |
| Max Discharge | 919 cfs |
| Year Completed | 1911 (115 years old) |
| NID ID | OR00570 |
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
DOI BLM
Federal Government
Nearby Dams
Frequently Asked Questions
What is the hazard classification of Morrison Dam?
Morrison Dam 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 Morrison Dam?
Morrison Dam is owned by DOI BLM (Federal Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Morrison Dam built?
Morrison Dam was completed in 1911, making it 115 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 Morrison Dam?
Morrison Dam serves the following purposes: Water Supply. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
When was Morrison Dam last inspected?
Morrison Dam was last inspected on September 24, 2020. Inspection dates indicate when a formal review occurred, not the results of that inspection.