Lake Washington Dam
Key Takeaway
Lake Washington Dam is classified as low hazard in New Jersey. It was completed in 1930 and is 96 years old. Its primary use is recreation.
Physical Details
| Dam Height | 11 ft (taller than 25.9% in NJ) |
| Dam Length | 475 ft |
| Dam Type | Earth |
| Max Storage | 60 acre-ft |
| Normal Storage | 48 acre-ft |
| Surface Area | 8 acres |
| Drainage Area | 7 sq mi |
| Max Discharge | 125 cfs |
| Year Completed | 1930 (96 years old) |
| NID ID | NJ00579 |
Safety Information
No probable loss of human life and low economic/environmental losses expected.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
Wanaque Borough
Local Government
Nearby Dams
Wolf Den Dam
Passaic, NJ
High Hazard 42 ftUpper Twin Lakes Dam
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Low Hazard 7 ftOverflow Weir Dam
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High Hazard 30 ftMorse Lake Dam
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Low Hazard 14 ftGreen Swamp #4 Dam
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High Hazard 65 ftRaymond Dam
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High Hazard 103 ftIrish Brook Dam
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High Hazard 17 ftLower Twin Lakes Dam
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Significant Hazard 10 ftFrequently Asked Questions
What is the hazard classification of Lake Washington Dam?
Lake Washington Dam is classified as Low Hazard. No probable loss of human life and low economic/environmental losses expected. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Lake Washington Dam?
Lake Washington Dam is owned by Wanaque Borough (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Lake Washington Dam built?
Lake Washington Dam was completed in 1930, making it 96 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 Lake Washington Dam?
Lake Washington 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 Lake Washington Dam?
Lake Washington Dam has a dam height of 11 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 Lake Washington Dam last inspected?
Lake Washington Dam was last inspected on September 22, 2007. Inspection dates indicate when a formal review occurred, not the results of that inspection.