River Wall Dam

Pequannock River· Passaic, New Jersey· Built 1961· Concrete· 26 ft tall
High Hazard Recreation Local Government

Key Takeaway

River Wall Dam is classified as high hazard in New Jersey. It was completed in 1961 and is 65 years old. Its primary use is recreation. High hazard means loss of life is likely if the dam fails — it does not indicate the dam's current condition. Learn more.

Physical Details

Dam Height 26 ft (taller than 87% in NJ)
Dam Length2,020 ft
Dam TypeConcrete
Normal Storage50 acre-ft
Surface Area15 acres
Drainage Area56 sq mi
Max Discharge5,600 cfs
Year Completed1961 (65 years old)
NID IDNJ00547

Safety Information

High Hazard

Loss of human life is likely if the dam fails.

Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?

Emergency Action Plan: Yes
Last Inspection: December 10, 2021
State Regulated: Yes
Regulatory Agency: NJDEP

Ownership

City of Newark, Department of Water and Sewer Utilities

Local Government

Nearby Dams

Frequently Asked Questions

What is the hazard classification of River Wall Dam?

River Wall Dam is classified as High Hazard. Loss of human life is likely if the dam fails. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.

Who owns and operates River Wall Dam?

River Wall Dam is owned by City of Newark, Department of Water and Sewer Utilities (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was River Wall Dam built?

River Wall Dam was completed in 1961, making it 65 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 River Wall Dam?

River Wall 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 River Wall Dam?

River Wall Dam has a dam height of 26 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 River Wall Dam last inspected?

River Wall Dam was last inspected on December 10, 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.