Hackettstown Res. Dam

Mine Brook· Morris, New Jersey· Concrete· 38 ft tall

High Hazard Water Supply Private

Key Takeaway

Hackettstown Res. Dam is classified as high hazard in New Jersey. Its primary use is water supply. 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	38 ft (taller than 94.4% in NJ)
Dam Length	285 ft
Dam Type	Concrete
Normal Storage	68 acre-ft

Surface Area	48 acres
Drainage Area	2 sq mi
Max Discharge	530 cfs
NID ID	NJ00142

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 28, 2022

State Regulated: Yes

Regulatory Agency: NJDEP

Ownership

Ironbound Real Estate Holdings, LLC

Private

Nearby Dams

Mine Hill Reservoir Dam

Morris, NJ

Significant Hazard 30 ft

Saxton Falls Dam

Morris, NJ

High Hazard 16 ft

Morris County Ymca Dam

Morris, NJ

Significant Hazard 18 ft

Deer Park Pond Dam

Warren, NJ

Significant Hazard 19 ft

Allamuchy Pond Dam

Warren, NJ

Significant Hazard 13 ft

George Lake Dam

Morris, NJ

Significant Hazard 30 ft

Frenches Pond Dam

Sussex, NJ

High Hazard 13 ft

Upper Waterloo Lake Dam

Sussex, NJ

Low Hazard 9 ft

Frequently Asked Questions

What is the hazard classification of Hackettstown Res. Dam?

Hackettstown Res. 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 Hackettstown Res. Dam?

Hackettstown Res. Dam is owned by Ironbound Real Estate Holdings, LLC (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

What is the primary purpose of Hackettstown Res. Dam?

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

How tall is Hackettstown Res. Dam?

Hackettstown Res. Dam has a dam height of 38 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 Hackettstown Res. Dam last inspected?

Hackettstown Res. Dam was last inspected on March 28, 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.