Derby Pond Dam
Key Takeaway
Derby Pond Dam is classified as high hazard in Delaware. It was completed in 1967 and is 59 years old. Its primary use is fish and wildlife pond. 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 | 10 ft (taller than 9.8% in DE) |
| Dam Length | 690 ft |
| Dam Type | Gravity |
| Max Storage | 266 acre-ft |
| Normal Storage | 93 acre-ft |
| Surface Area | 25 acres |
| Drainage Area | 5 sq mi |
| Max Discharge | 1,437 cfs |
| Year Completed | 1967 (59 years old) |
| NID ID | DE00036 |
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
DELDOT;DNREC DFW
State Government
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Significant Hazard 18 ftSilver Lake Dam - Dover
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Low Hazard 16 ftFrequently Asked Questions
What is the hazard classification of Derby Pond Dam?
Derby Pond Dam 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 Derby Pond Dam?
Derby Pond Dam is owned by DELDOT;DNREC DFW (State Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Derby Pond Dam built?
Derby Pond Dam was completed in 1967, making it 59 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 Derby Pond Dam?
Derby Pond Dam serves the following purposes: Fish And Wildlife Pond, Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Derby Pond Dam?
Derby Pond Dam has a dam height of 10 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 Derby Pond Dam last inspected?
Derby Pond Dam was last inspected on June 2, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.