Locust Lake Dam

Muddy Brook· Warren, New Jersey· Earth· 21 ft tall

High Hazard Recreation Private

Key Takeaway

Locust Lake Dam is classified as high hazard in New Jersey. 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	21 ft (taller than 78.3% in NJ)
Dam Length	223 ft
Dam Type	Earth
Normal Storage	300 acre-ft

Surface Area	36 acres
Drainage Area	2 sq mi
Max Discharge	306 cfs
NID ID	NJ00126

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: July 14, 2020

State Regulated: Yes

Regulatory Agency: NJDEP

Ownership

John P. de Newfville, Ph.D.

Private

Nearby Dams

Lake Barylick Dam

Warren, NJ

Low Hazard 25 ft

Lake Susquehanna Dam

Warren, NJ

Low Hazard 19 ft

Liberty Lake Dam

Warren, NJ

Significant Hazard 23 ft

Delaware Lake Dam

Warren, NJ

Low Hazard 21 ft

Blair Lake Dam

Warren, NJ

High Hazard 18 ft

Lake Wasigan Dam

Warren, NJ

Low Hazard 10 ft

Lake Kalmia Dam

Warren, NJ

Low Hazard 8 ft

Paulina Lake Dam

Warren, NJ

Significant Hazard 13 ft

Frequently Asked Questions

What is the hazard classification of Locust Lake Dam?

Locust 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 Locust Lake Dam?

Locust Lake Dam is owned by John P. de Newfville, Ph.D. (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

What is the primary purpose of Locust Lake Dam?

Locust 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 Locust Lake Dam?

Locust Lake Dam has a dam height of 21 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 Locust Lake Dam last inspected?

Locust Lake Dam was last inspected on July 14, 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.