Manalapan Brook Pond Dam

Manalapan Brook· Monmouth, New Jersey· Built 1924· Earth· 14 ft tall
Significant Hazard Recreation Local Government

Key Takeaway

Manalapan Brook Pond Dam is classified as significant hazard in New Jersey. It was completed in 1924 and is 102 years old. Its primary use is recreation. Significant hazard means failure could cause economic or environmental damage. Learn more.

Physical Details

Dam Height 14 ft (taller than 46.2% in NJ)
Dam Length225 ft
Dam TypeEarth
Normal Storage61 acre-ft
Surface Area7 acres
Drainage Area3 sq mi
Max Discharge213 cfs
Year Completed1924 (102 years old)
NID IDNJ00588

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: May 14, 2021
State Regulated: Yes
Regulatory Agency: NJDEP

Ownership

County of Monmouth Park System

Local Government

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Manalapan Brook Pond Dam?

Manalapan Brook Pond 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 Manalapan Brook Pond Dam?

Manalapan Brook Pond Dam is owned by County of Monmouth Park System (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Manalapan Brook Pond Dam built?

Manalapan Brook Pond Dam was completed in 1924, making it 102 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 Manalapan Brook Pond Dam?

Manalapan Brook Pond 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 Manalapan Brook Pond Dam?

Manalapan Brook Pond Dam has a dam height of 14 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 Manalapan Brook Pond Dam last inspected?

Manalapan Brook Pond Dam was last inspected on May 14, 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.