Perrineville Dam

Rocky Brook· Monmouth, New Jersey· Earth· 17 ft tall
Significant Hazard Recreation Local Government

Key Takeaway

Perrineville 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 17 ft (taller than 63.3% in NJ)
Dam Length450 ft
Dam TypeEarth
Normal Storage36 acre-ft
Surface Area12 acres
Drainage Area3 sq mi
NID IDNJ00451

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: October 27, 2021
State Regulated: Yes
Regulatory Agency: NJDEP

Ownership

Monmouth County Engineering

Local Government

Nearby Dams

New Jersey No Name # 82 Dam

Monmouth, NJ

Low Hazard 10 ft

Assunpink #18 Dam

Monmouth, NJ

High Hazard 38 ft

Assunpink #19 Dam

Monmouth, NJ

Significant Hazard 36 ft

Etra Mill Dam

Mercer, NJ

Low Hazard 11 ft

Red Valley Dam

Monmouth, NJ

Significant Hazard 15 ft

Manalapan Brook Pond Dam

Monmouth, NJ

Significant Hazard 14 ft

Dawns Dam

Monmouth, NJ

Low Hazard 20 ft

Assunpink #4 Dam

Monmouth, NJ

High Hazard 24 ft

Frequently Asked Questions

What is the hazard classification of Perrineville Dam?

Perrineville 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 Perrineville Dam?

Perrineville Dam is owned by Monmouth County Engineering (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

What is the primary purpose of Perrineville Dam?

Perrineville 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 Perrineville Dam?

Perrineville Dam has a dam height of 17 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 Perrineville Dam last inspected?

Perrineville Dam was last inspected on October 27, 2021. 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.