John'S Lake Dam

Clove Brook· Sussex, New Jersey· Earth· 11 ft tall
Low Hazard Recreation Private

Key Takeaway

John'S Lake Dam is classified as low hazard in New Jersey. Its primary use is recreation.

Physical Details

Dam Height 11 ft (taller than 25.9% in NJ)
Dam Length1,200 ft
Dam TypeEarth
Max Storage150 acre-ft
Normal Storage60 acre-ft
Surface Area2 acres
Drainage Area2 sq mi
NID IDNJ00673

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: October 21, 2022
State Regulated: Yes
Regulatory Agency: NJDEP

Ownership

John Autore

Private

Nearby Dams

Colesville Reservoir Dam

Sussex, NJ

Significant Hazard 15 ft

Lake Rutherford Dam

Sussex, NJ

High Hazard 12 ft

Lake Marcia Dam

Sussex, NJ

Low Hazard 15 ft

Steenykill Lake Dam

Sussex, NJ

High Hazard 25 ft

Sawmill Pond Dam

Sussex, NJ

Low Hazard 15 ft

Herzenberg Dam

Sussex, NJ

Low Hazard 16 ft

Lake Arkin Dam

Orange, NY

Significant Hazard 7 ft

Fountain House Dam

Sussex, NJ

Significant Hazard 12 ft

Frequently Asked Questions

What is the hazard classification of John'S Lake Dam?

John'S 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 John'S Lake Dam?

John'S Lake Dam is owned by John Autore (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

What is the primary purpose of John'S Lake Dam?

John'S 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 John'S Lake Dam?

John'S Lake Dam has a dam height of 11 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 John'S Lake Dam last inspected?

John'S Lake Dam was last inspected on October 21, 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.