Jefferson Lake Dam

Lubbers Run-TR· Sussex, New Jersey· Earth· 15 ft tall
Low Hazard Recreation State Government

Key Takeaway

Jefferson Lake Dam is classified as low hazard in New Jersey. Its primary use is recreation.

Physical Details

Dam Height 15 ft (taller than 51.4% in NJ)
Dam Length450 ft
Dam TypeEarth
Normal Storage250 acre-ft
Surface Area50 acres
Drainage Area5 sq mi
NID IDNJ00326

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: April 11, 2005
State Regulated: Yes
Regulatory Agency: NJDEP

Ownership

Division of Parks and Forestry

State Government

Nearby Dams

Jefferson Lake Dike

Sussex, NJ

Low Hazard 14 ft

Upper Waterloo Lake Dam

Sussex, NJ

Low Hazard 9 ft

Cranberry Lake Dam

Sussex, NJ

High Hazard 18 ft

Johnson Lake Dam

Sussex, NJ

Low Hazard 11 ft

Lake Lackawanna Dam

Sussex, NJ

Significant Hazard 15 ft

Lake Musconetcong Dam

Morris, NJ

High Hazard 14 ft

Reservoir Lake Dam

Sussex, NJ

High Hazard 12 ft

Frenches Pond Dam

Sussex, NJ

High Hazard 13 ft

Frequently Asked Questions

What is the hazard classification of Jefferson Lake Dam?

Jefferson 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 Jefferson Lake Dam?

Jefferson Lake Dam is owned by Division of Parks and Forestry (State Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

What is the primary purpose of Jefferson Lake Dam?

Jefferson 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 Jefferson Lake Dam?

Jefferson 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 Jefferson Lake Dam last inspected?

Jefferson Lake Dam was last inspected on April 11, 2005. 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.