Sleepy Valley Dam
Key Takeaway
Sleepy Valley 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 | 13 ft (taller than 39.5% in NJ) |
| Dam Length | 270 ft |
| Dam Type | Earth |
| Max Storage | 122 acre-ft |
| Normal Storage | 81 acre-ft |
| Surface Area | 18 acres |
| Drainage Area | 2 sq mi |
| Max Discharge | 390 cfs |
| Year Completed | 1937 (89 years old) |
| NID ID | NJ00763 |
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
Tall Timbers Property Owners Association
Private
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Significant Hazard 14 ftFrequently Asked Questions
What is the hazard classification of Sleepy Valley Dam?
Sleepy Valley 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 Sleepy Valley Dam?
Sleepy Valley Dam is owned by Tall Timbers Property Owners Association (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Sleepy Valley Dam built?
Sleepy Valley 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 Sleepy Valley Dam?
Sleepy Valley 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 Sleepy Valley Dam?
Sleepy Valley Dam has a dam height of 13 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 Sleepy Valley Dam last inspected?
Sleepy Valley Dam was last inspected on October 28, 2020. Inspection dates indicate when a formal review occurred, not the results of that inspection.