Portland City Lake
Key Takeaway
Portland City Lake is classified as significant hazard in Tennessee. It was completed in 1945 and is 81 years old. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Length | 614 ft |
| Dam Type | Earth |
| Max Storage | 422 acre-ft |
| Normal Storage | 272 acre-ft |
| Surface Area | 24 acres |
| Drainage Area | 1 sq mi |
| Year Completed | 1945 (81 years old) |
| NID ID | TN16510 |
Safety Information
No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
CITY OF PORTLAND
Local Government
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Significant Hazard 15 ftFrequently Asked Questions
What is the hazard classification of Portland City Lake?
Portland City Lake is classified as Significant Hazard. No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Portland City Lake?
Portland City Lake is owned by CITY OF PORTLAND (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Portland City Lake built?
Portland City Lake was completed in 1945, making it 81 years old. Many U.S. dams were built between the 1930s and 1970s during a period of major infrastructure investment.
When was Portland City Lake last inspected?
Portland City Lake was last inspected on June 9, 2020. Inspection dates indicate when a formal review occurred, not the results of that inspection.