Diamond Mill Pond Dam
Key Takeaway
Diamond Mill Pond Dam is classified as significant hazard in New Jersey. It was completed in 1937 and is 89 years old. Its primary use is recreation. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 9 ft (taller than 12.9% in NJ) |
| Dam Length | 375 ft |
| Dam Type | Earth |
| Max Storage | 24 acre-ft |
| Normal Storage | 11 acre-ft |
| Surface Area | 4 acres |
| Drainage Area | 7 sq mi |
| Max Discharge | 1,940 cfs |
| Year Completed | 1937 (89 years old) |
| NID ID | NJ00926 |
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
County of Essex Department of Public Works
Local Government
Nearby Dams
Campbells Pond Dam
Essex, NJ
Significant Hazard 22 ftBriant Park Dam
Union, NJ
Significant Hazard 16 ftOrange Reservoir Dam
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High Hazard 34 ftCanoe Brook Dam
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Significant Hazard 9 ftCanoe Brook Reservoir #1 Dam
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High Hazard 25 ftBear Brook Dam
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Significant Hazard 20 ftKenilworth Blvd. Dam
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Significant Hazard 2 ftCanoe Brook Reservoir #2 Dam
Essex, NJ
High Hazard 29 ftFrequently Asked Questions
What is the hazard classification of Diamond Mill Pond Dam?
Diamond Mill Pond Dam 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 Diamond Mill Pond Dam?
Diamond Mill Pond Dam is owned by County of Essex Department of Public Works (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Diamond Mill Pond Dam built?
Diamond Mill Pond Dam was completed in 1937, making it 89 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 Diamond Mill Pond Dam?
Diamond Mill Pond Dam serves the following purposes: Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Diamond Mill Pond Dam?
Diamond Mill Pond Dam has a dam height of 9 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 Diamond Mill Pond Dam last inspected?
Diamond Mill Pond Dam was last inspected on April 8, 2021. Inspection dates indicate when a formal review occurred, not the results of that inspection.