Liberty Lake Dam

Mountain Lake Brook· Warren, New Jersey· Earth· 23 ft tall
Significant Hazard Flood Risk Reduction Local Government

Key Takeaway

Liberty Lake Dam is classified as significant hazard in New Jersey. Its primary use is flood risk reduction. Significant hazard means failure could cause economic or environmental damage. Learn more.

Physical Details

Dam Height 23 ft (taller than 82.2% in NJ)
Dam Length680 ft
Dam TypeEarth
Max Storage11 acre-ft
Normal Storage43 acre-ft
Surface Area8 acres
Drainage Area1 sq mi
Max Discharge86 cfs
NID IDNJ00994

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: November 18, 2020
State Regulated: Yes
Regulatory Agency: NJDEP

Ownership

Township of Liberty

Local Government

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Liberty Lake Dam?

Liberty Lake 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 Liberty Lake Dam?

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

What is the primary purpose of Liberty Lake Dam?

Liberty Lake Dam serves the following purposes: Flood Risk Reduction. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.

How tall is Liberty Lake Dam?

Liberty Lake Dam has a dam height of 23 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 Liberty Lake Dam last inspected?

Liberty Lake Dam was last inspected on November 18, 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.