Seaside City
Key Takeaway
Seaside City is classified as high hazard in Oregon. It was completed in 1996 and is 30 years old. Its primary use is water supply. High hazard means loss of life is likely if the dam fails — it does not indicate the dam's current condition. Learn more.
Physical Details
| Dam Height | 45 ft (taller than 80.5% in OR) |
| Dam Length | 150 ft |
| Dam Type | Earth |
| Max Storage | 0 acre-ft |
| Normal Storage | 170 acre-ft |
| Surface Area | 13 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 68 cfs |
| Year Completed | 1996 (30 years old) |
| NID ID | OR01387 |
Safety Information
Loss of human life is likely if the dam fails.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
CITY OF SEASIDE
Local Government
Frequently Asked Questions
What is the hazard classification of Seaside City?
Seaside City is classified as High Hazard. Loss of human life is likely if the dam fails. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Seaside City?
Seaside City is owned by CITY OF SEASIDE (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Seaside City built?
Seaside City was completed in 1996, making it 30 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 Seaside City?
Seaside City serves the following purposes: Water Supply. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Seaside City?
Seaside City has a dam height of 45 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 Seaside City last inspected?
Seaside City was last inspected on October 15, 2020. Inspection dates indicate when a formal review occurred, not the results of that inspection.