Cooks Pond Dam

Rockaway River-TR· Morris, New Jersey· Built 1945· Earth· 8 ft tall
Significant Hazard Recreation Local Government

Key Takeaway

Cooks Pond Dam is classified as significant hazard in New Jersey. It was completed in 1945 and is 81 years old. Its primary use is recreation. Significant hazard means failure could cause economic or environmental damage. Learn more.

Physical Details

Dam Height 8 ft (taller than 5.1% in NJ)
Dam Length440 ft
Dam TypeEarth
Max Storage77 acre-ft
Normal Storage59 acre-ft
Surface Area18 acres
Drainage Area0 sq mi
Max Discharge40 cfs
Year Completed1945 (81 years old)
NID IDNJ00810

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 15, 2019
State Regulated: Yes
Regulatory Agency: NJDEP

Ownership

Township of Denville

Local Government

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Cooks Pond Dam?

Cooks 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 Cooks Pond Dam?

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

When was Cooks Pond Dam built?

Cooks Pond Dam was completed in 1945, making it 81 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 Cooks Pond Dam?

Cooks 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 Cooks Pond Dam?

Cooks Pond Dam has a dam height of 8 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 Cooks Pond Dam last inspected?

Cooks Pond Dam was last inspected on March 15, 2019. 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.