Untermeyer Dam
Key Takeaway
Untermeyer Dam is classified as high hazard in New Jersey. It was completed in 1927 and is 99 years old. Its primary use is recreation. 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 | 23 ft (taller than 82.2% in NJ) |
| Dam Length | 340 ft |
| Dam Type | Earth |
| Normal Storage | 245 acre-ft |
| Surface Area | 16 acres |
| Drainage Area | 1 sq mi |
| Year Completed | 1927 (99 years old) |
| NID ID | NJ00253 |
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
Borough of Kinnelon
Local Government
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Significant Hazard 16 ftFrequently Asked Questions
What is the hazard classification of Untermeyer Dam?
Untermeyer 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 Untermeyer Dam?
Untermeyer Dam is owned by Borough of Kinnelon (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Untermeyer Dam built?
Untermeyer Dam was completed in 1927, making it 99 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 Untermeyer Dam?
Untermeyer 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 Untermeyer Dam?
Untermeyer Dam has a dam height of 23 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 Untermeyer Dam last inspected?
Untermeyer Dam was last inspected on June 5, 2020. Inspection dates indicate when a formal review occurred, not the results of that inspection.