Ewans Mill Dam

Mullica River· Gloucester, New Jersey· Earth· 15 ft tall
Significant Hazard Recreation Private

Key Takeaway

Ewans Mill Dam is classified as significant hazard in New Jersey. Its primary use is recreation. Significant hazard means failure could cause economic or environmental damage. Learn more.

Physical Details

Dam Height 15 ft (taller than 51.4% in NJ)
Dam Length350 ft
Dam TypeEarth
Normal Storage31 acre-ft
Surface Area22 acres
Drainage Area6 sq mi
Max Discharge70 cfs
NID IDNJ00430

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: No
Last Inspection: March 24, 2020
State Regulated: Yes
Regulatory Agency: NJDEP

Ownership

Camden Diving Operations, Inc.

Private

Nearby Dams

Lake Gilman Dam

Gloucester, NJ

High Hazard 14 ft

Lake Hackney Dam

Gloucester, NJ

Significant Hazard 11 ft

Mullica Hill Pond Dam

Gloucester, NJ

Significant Hazard 19 ft

Algonkin Dam

Salem, NJ

Significant Hazard 14 ft

Alcyon Lake Dam

Gloucester, NJ

Significant Hazard 12 ft

Harrisonville Dam

Gloucester, NJ

Significant Hazard 15 ft

Cedar Road Dam

Gloucester, NJ

Significant Hazard 12 ft

Wadsworth Lake Dam

Gloucester, NJ

High Hazard 20 ft

Frequently Asked Questions

What is the hazard classification of Ewans Mill Dam?

Ewans Mill 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 Ewans Mill Dam?

Ewans Mill Dam is owned by Camden Diving Operations, Inc. (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

What is the primary purpose of Ewans Mill Dam?

Ewans Mill 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 Ewans Mill Dam?

Ewans Mill 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 Ewans Mill Dam last inspected?

Ewans Mill Dam was last inspected on March 24, 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.