Stony Brook W.S. Site 11 (Amwell) Dam
Key Takeaway
Stony Brook W.S. Site 11 (Amwell) Dam is classified as significant hazard in New Jersey. It was completed in 1963 and is 63 years old. Its primary use is flood risk reduction. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 22 ft (taller than 79.5% in NJ) |
| Dam Length | 951 ft |
| Dam Type | Earth |
| Normal Storage | 41 acre-ft |
| Surface Area | 10 acres |
| Drainage Area | 1 sq mi |
| Year Completed | 1963 (63 years old) |
| NID ID | NJ00343 |
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
Division of Fish & Wildlife
State Government
Nearby Dams
Stony Brook Water Shed #7 (Hunt Lake) Dam
Mercer, NJ
High Hazard 28 ftAmwell No. 3 Dam
Hunterdon, NJ
Significant Hazard 26 ftSullivan Pond Dam
Hunterdon, NJ
High Hazard 19 ftAmwell #2 Dam
Hunterdon, NJ
Significant Hazard 19 ftAmwell No. 1 Dam
Hunterdon, NJ
Significant Hazard 22 ftStony Brook W.S. # 5 (Baldwin) Dam
Mercer, NJ
Low Hazard 14 ftLambertville #2 Dam
Hunterdon, NJ
High Hazard 17 ftStony Brook #4 (Curlis Lake) Dam
Mercer, NJ
Low Hazard 24 ftFrequently Asked Questions
What is the hazard classification of Stony Brook W.S. Site 11 (Amwell) Dam?
Stony Brook W.S. Site 11 (Amwell) 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 Stony Brook W.S. Site 11 (Amwell) Dam?
Stony Brook W.S. Site 11 (Amwell) Dam is owned by Division of Fish & Wildlife (State Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Stony Brook W.S. Site 11 (Amwell) Dam built?
Stony Brook W.S. Site 11 (Amwell) Dam was completed in 1963, making it 63 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 Stony Brook W.S. Site 11 (Amwell) Dam?
Stony Brook W.S. Site 11 (Amwell) Dam serves the following purposes: Flood Risk Reduction. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Stony Brook W.S. Site 11 (Amwell) Dam?
Stony Brook W.S. Site 11 (Amwell) Dam has a dam height of 22 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 Stony Brook W.S. Site 11 (Amwell) Dam last inspected?
Stony Brook W.S. Site 11 (Amwell) Dam was last inspected on June 24, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.