Lower Mountain Lake Dam
Key Takeaway
Lower Mountain Lake Dam is classified as significant hazard in New Jersey. 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 | 25 acre-ft |
| Normal Storage | 15 acre-ft |
| Surface Area | 6 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 1,000 cfs |
| NID ID | NJ00747 |
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
Princeton
Local Government
Nearby Dams
Regional Stormwater Detention Basin G Dam
Mercer, NJ
Significant Hazard 18 ftSmoyer Park Dam
Mercer, NJ
Significant Hazard 15 ftSquibb Dam
Mercer, NJ
Low Hazard 26 ftCarnegie Lake Dam
Mercer, NJ
Significant Hazard 28 ftBridgepoint Dam
Somerset, NJ
Significant Hazard 15 ftStony Brook #14 (Honey Lake) Dam
Mercer, NJ
High Hazard 18 ftStony Brook #2 (Willow Lake) Dam
Mercer, NJ
Low Hazard 15 ftBee Brook Detention Dam
Middlesex, NJ
Low Hazard 11 ftFrequently Asked Questions
What is the hazard classification of Lower Mountain Lake Dam?
Lower Mountain Lake 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 Lower Mountain Lake Dam?
Lower Mountain Lake Dam is owned by Princeton (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
What is the primary purpose of Lower Mountain Lake Dam?
Lower Mountain Lake 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 Lower Mountain Lake Dam?
Lower Mountain Lake 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 Lower Mountain Lake Dam last inspected?
Lower Mountain Lake Dam was last inspected on April 6, 2020. Inspection dates indicate when a formal review occurred, not the results of that inspection.