Hartley Pond
Key Takeaway
Hartley Pond is classified as high hazard in Minnesota. It was completed in 1975 and is 51 years old. Its primary use is flood risk reduction. 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 | 15 ft (taller than 50.4% in MN) |
| Dam Length | 250 ft |
| Dam Type | Gravity |
| Max Storage | 90 acre-ft |
| Normal Storage | 54 acre-ft |
| Surface Area | 20 acres |
| Drainage Area | 4 sq mi |
| Max Discharge | 1,000 cfs |
| Year Completed | 1975 (51 years old) |
| Year Modified | 1985 |
| NID ID | MN00004 |
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 Duluth
Local Government
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High Hazard 25 ftFrequently Asked Questions
What is the hazard classification of Hartley Pond?
Hartley Pond 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 Hartley Pond?
Hartley Pond is owned by City of Duluth (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Hartley Pond built?
Hartley Pond was completed in 1975, making it 51 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 Hartley Pond?
Hartley Pond serves the following purposes: Flood Risk Reduction. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Hartley Pond?
Hartley Pond has a dam height of 15 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 Hartley Pond last inspected?
Hartley Pond was last inspected on October 5, 2023. Inspection dates indicate when a formal review occurred, not the results of that inspection.