Cassville Dam

Small Branch Toms River· Ocean, New Jersey· Earth· 6 ft tall
Significant Hazard Recreation Private

Key Takeaway

Cassville 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 6 ft (taller than 0.6% in NJ)
Dam Length225 ft
Dam TypeEarth
Normal Storage100 acre-ft
Surface Area14 acres
Drainage Area6 sq mi
Max Discharge168 cfs
NID IDNJ00606

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: Yes
Last Inspection: August 18, 2022
State Regulated: Yes
Regulatory Agency: NJDEP

Ownership

Rova Farms Inc.

Private

Nearby Dams

Kennedy Pond Dam

Ocean, NJ

Low Hazard 15 ft

Success Lake Dam

Ocean, NJ

Low Hazard 11 ft

Lahaway Plantation Dam

Ocean, NJ

Low Hazard 14 ft

Turn Mill Pond Dam

Ocean, NJ

Low Hazard 13 ft

Collier Mills Dam

Ocean, NJ

Low Hazard 9 ft

Jacksons Mills Dam

Ocean, NJ

Significant Hazard 15 ft

Prospertown Dam

Ocean, NJ

High Hazard 19 ft

Butterfly Bogs Dam

Ocean, NJ

Significant Hazard 8 ft

Frequently Asked Questions

What is the hazard classification of Cassville Dam?

Cassville 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 Cassville Dam?

Cassville Dam is owned by Rova Farms Inc. (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

What is the primary purpose of Cassville Dam?

Cassville 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 Cassville Dam?

Cassville Dam has a dam height of 6 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 Cassville Dam last inspected?

Cassville Dam was last inspected on August 18, 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.