Morris County Ymca Dam

Raritan River· Morris, New Jersey· Built 1928· Earth· 18 ft tall
Significant Hazard Recreation Private

Key Takeaway

Morris County Ymca Dam is classified as significant hazard in New Jersey. It was completed in 1928 and is 98 years old. Its primary use is recreation. Significant hazard means failure could cause economic or environmental damage. Learn more.

Physical Details

Dam Height 18 ft (taller than 66.3% in NJ)
Dam Length250 ft
Dam TypeEarth
Normal Storage90 acre-ft
Surface Area3 acres
Drainage Area8 sq mi
Max Discharge760 cfs
Year Completed1928 (98 years old)
NID IDNJ00746

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: October 21, 2021
State Regulated: Yes
Regulatory Agency: NJDEP

Ownership

Mt Olive Complex, Inc.

Private

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Morris County Ymca Dam?

Morris County Ymca 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 Morris County Ymca Dam?

Morris County Ymca Dam is owned by Mt Olive Complex, Inc. (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Morris County Ymca Dam built?

Morris County Ymca Dam was completed in 1928, making it 98 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 Morris County Ymca Dam?

Morris County Ymca 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 Morris County Ymca Dam?

Morris County Ymca Dam has a dam height of 18 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 Morris County Ymca Dam last inspected?

Morris County Ymca Dam was last inspected on October 21, 2021. 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.