Smoyer Park Dam

Millstone River· Mercer, New Jersey· Earth· 15 ft tall
Significant Hazard Local Government

Key Takeaway

Smoyer Park Dam is classified as significant hazard in New Jersey. Significant hazard means failure could cause economic or environmental damage. Learn more.

Physical Details

Dam Height 15 ft (taller than 51.4% in NJ)
Dam TypeEarth
Surface Area1 acres
NID IDNJ00990

Safety Information

Significant Hazard

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?

Emergency Action Plan: Yes
Last Inspection: April 6, 2020
State Regulated: Yes
Regulatory Agency: NJDEP

Ownership

Princeton

Local Government

Nearby Dams

Carnegie Lake Dam

Mercer, NJ

Significant Hazard 28 ft

Regional Stormwater Detention Basin G Dam

Mercer, NJ

Significant Hazard 18 ft

Princeton Walk Dam

Middlesex, NJ

Significant Hazard 16 ft

Lower Mountain Lake Dam

Mercer, NJ

Significant Hazard 13 ft

Bee Brook Detention Dam

Middlesex, NJ

Low Hazard 11 ft

Bridgepoint Dam

Somerset, NJ

Significant Hazard 15 ft

Plainsboro Pond Dam

Middlesex, NJ

Significant Hazard 11 ft

Grover'S Mill Dam

Mercer, NJ

Significant Hazard 15 ft

Frequently Asked Questions

What is the hazard classification of Smoyer Park Dam?

Smoyer Park 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 Smoyer Park Dam?

Smoyer Park Dam is owned by Princeton (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

How tall is Smoyer Park Dam?

Smoyer Park Dam has a dam height of 15 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 Smoyer Park Dam last inspected?

Smoyer Park Dam was last inspected on April 6, 2020. Inspection dates indicate when a formal review occurred, not the results of that inspection.

Data from the National Inventory of Dams (NID) maintained by the US Army Corps of Engineers. Dam conditions may have changed since the last update. This site is not affiliated with USACE. Do not use for emergency planning — contact your local dam safety program.