Erskine Upper Lake Dam

Wanaque River-TR· Passaic, New Jersey· Built 1932· Earth· 20 ft tall
High Hazard Recreation Private

Key Takeaway

Erskine Upper Lake Dam is classified as high hazard in New Jersey. It was completed in 1932 and is 94 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 20 ft (taller than 72.4% in NJ)
Dam Length800 ft
Dam TypeEarth
Max Storage437 acre-ft
Normal Storage320 acre-ft
Surface Area35 acres
Drainage Area0 sq mi
Max Discharge1,440 cfs
Year Completed1932 (94 years old)
NID IDNJ00197

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 1, 2020
State Regulated: Yes
Regulatory Agency: NJDEP

Ownership

Erskine Lakes Property Association

Private

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Erskine Upper Lake Dam?

Erskine Upper Lake 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 Erskine Upper Lake Dam?

Erskine Upper Lake Dam is owned by Erskine Lakes Property Association (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Erskine Upper Lake Dam built?

Erskine Upper Lake Dam was completed in 1932, making it 94 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 Erskine Upper Lake Dam?

Erskine Upper Lake 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 Erskine Upper Lake Dam?

Erskine Upper Lake Dam has a dam height of 20 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 Erskine Upper Lake Dam last inspected?

Erskine Upper Lake Dam was last inspected on December 1, 2020. 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.