Colesville Reservoir Dam

Papakating Creek· Sussex, New Jersey· Earth· 15 ft tall
Significant Hazard Water Supply Local Government

Key Takeaway

Colesville Reservoir Dam is classified as significant hazard in New Jersey. Its primary use is water supply. 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 Length330 ft
Dam TypeEarth
Normal Storage8 acre-ft
Surface Area2 acres
Drainage Area2 sq mi
NID IDNJ01004

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: July 23, 2021
State Regulated: Yes
Regulatory Agency: NJDEP

Ownership

Borough of Sussex

Local Government

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Colesville Reservoir Dam?

Colesville Reservoir 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 Colesville Reservoir Dam?

Colesville Reservoir Dam is owned by Borough of Sussex (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

What is the primary purpose of Colesville Reservoir Dam?

Colesville Reservoir Dam serves the following purposes: Water Supply. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.

How tall is Colesville Reservoir Dam?

Colesville Reservoir 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 Colesville Reservoir Dam last inspected?

Colesville Reservoir Dam was last inspected on July 23, 2021. 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.