Shackamaxon Dam

Lambert's Run· Union, New Jersey· Earth· 24 ft tall

High Hazard Irrigation Private

Key Takeaway

Shackamaxon Dam is classified as high hazard in New Jersey. Its primary use is irrigation. 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	24 ft (taller than 83.4% in NJ)
Dam Length	275 ft
Dam Type	Earth
Normal Storage	53 acre-ft

Surface Area	11 acres
Drainage Area	3 sq mi
Max Discharge	1,290 cfs
NID ID	NJ00369

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: March 22, 2022

State Regulated: Yes

Regulatory Agency: NJDEP

Ownership

NJ Golf Partners, LLC

Private

Nearby Dams

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Robinson'S Branch Reservoir Dam

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Bloodgoods Pond Dam

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Echo Lake Dam

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Milton Lake Dam

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Kenilworth Blvd. Dam

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Surprise Lake Dam

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Jackson Pond Dam

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Frequently Asked Questions

What is the hazard classification of Shackamaxon Dam?

Shackamaxon 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 Shackamaxon Dam?

Shackamaxon Dam is owned by NJ Golf Partners, LLC (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

What is the primary purpose of Shackamaxon Dam?

Shackamaxon Dam serves the following purposes: Irrigation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.

How tall is Shackamaxon Dam?

Shackamaxon Dam has a dam height of 24 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 Shackamaxon Dam last inspected?

Shackamaxon Dam was last inspected on March 22, 2022. 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.