Reservoir Lake Dam

Sussex, New Jersey· Earth· 12 ft tall

High Hazard Recreation Private

Key Takeaway

Reservoir 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	12 ft (taller than 31.2% in NJ)
Dam Length	370 ft
Dam Type	Earth
Max Storage	147 acre-ft
Normal Storage	126 acre-ft

Surface Area	21 acres
Drainage Area	1 sq mi
Max Discharge	60 cfs
NID ID	NJ00897

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: December 15, 2020

State Regulated: Yes

Regulatory Agency: NJDEP

Ownership

Patriots' Path Council, B.S.A

Private

Nearby Dams

Frenches Pond Dam

Sussex, NJ

High Hazard 13 ft

Upper Waterloo Lake Dam

Sussex, NJ

Low Hazard 9 ft

Lake Tranquility Dam

Sussex, NJ

High Hazard 14 ft

Deer Park Pond Dam

Warren, NJ

Significant Hazard 19 ft

Jefferson Lake Dike

Sussex, NJ

Low Hazard 14 ft

Jefferson Lake Dam

Sussex, NJ

Low Hazard 15 ft

Cranberry Lake Dam

Sussex, NJ

High Hazard 18 ft

Allamuchy Pond Dam

Warren, NJ

Significant Hazard 13 ft

Frequently Asked Questions

What is the hazard classification of Reservoir Lake Dam?

Reservoir 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 Reservoir Lake Dam?

Reservoir Lake Dam is owned by Patriots' Path Council, B.S.A (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

What is the primary purpose of Reservoir Lake Dam?

Reservoir 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 Reservoir Lake Dam?

Reservoir Lake Dam has a dam height of 12 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 Reservoir Lake Dam last inspected?

Reservoir Lake Dam was last inspected on December 15, 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.