Old Mill Pond Dam

Wreck Pond Brook· Monmouth, New Jersey· Built 1948· Earth· 15 ft tall
Significant Hazard Recreation Local Government

Key Takeaway

Old Mill Pond Dam is classified as significant hazard in New Jersey. It was completed in 1948 and is 78 years old. Its primary use is recreation. 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 Length850 ft
Dam TypeEarth
Max Storage68 acre-ft
Normal Storage35 acre-ft
Surface Area11 acres
Drainage Area7 sq mi
Year Completed1948 (78 years old)
NID IDNJ00602

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: March 3, 2021
State Regulated: Yes
Regulatory Agency: NJDEP

Ownership

Township of Wall

Local Government

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Old Mill Pond Dam?

Old Mill 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 Old Mill Pond Dam?

Old Mill Pond Dam is owned by Township of Wall (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Old Mill Pond Dam built?

Old Mill Pond Dam was completed in 1948, making it 78 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 Old Mill Pond Dam?

Old Mill 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 Old Mill Pond Dam?

Old Mill Pond 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 Old Mill Pond Dam last inspected?

Old Mill Pond Dam was last inspected on March 3, 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.