Mount Laurel Lake Dam

Longhouse Brook· Passaic, New Jersey· Built 1930· Earth· 15 ft tall
Low Hazard Recreation Private

Key Takeaway

Mount Laurel Lake Dam is classified as low hazard in New Jersey. It was completed in 1930 and is 96 years old. Its primary use is recreation.

Physical Details

Dam Height 15 ft (taller than 51.4% in NJ)
Dam Length345 ft
Dam TypeEarth
Max Storage210 acre-ft
Normal Storage153 acre-ft
Surface Area40 acres
Drainage Area2 sq mi
Max Discharge300 cfs
Year Completed1930 (96 years old)
NID IDNJ00506

Safety Information

Low Hazard

No probable loss of human life and low economic/environmental losses expected.

Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?

Emergency Action Plan: No
Last Inspection: March 29, 2002
State Regulated: Yes
Regulatory Agency: NJDEP

Ownership

Upper Greenwood Lake Property Owners

Private

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Mount Laurel Lake Dam?

Mount Laurel Lake Dam is classified as Low Hazard. No probable loss of human life and low economic/environmental losses expected. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.

Who owns and operates Mount Laurel Lake Dam?

Mount Laurel Lake Dam is owned by Upper Greenwood Lake Property Owners (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Mount Laurel Lake Dam built?

Mount Laurel Lake Dam was completed in 1930, making it 96 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 Mount Laurel Lake Dam?

Mount Laurel 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 Mount Laurel Lake Dam?

Mount Laurel Lake Dam has a dam height of 15 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 Mount Laurel Lake Dam last inspected?

Mount Laurel Lake Dam was last inspected on March 29, 2002. 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.