High Falls Dam At Copenhagen

DEER RIVER· Lewis, New York· Built 1909· Concrete· 25 ft tall
Significant Hazard Hydroelectric Private

Key Takeaway

High Falls Dam At Copenhagen is classified as significant hazard in New York. It was completed in 1909 and is 117 years old. Its primary use is hydroelectric. Significant hazard means failure could cause economic or environmental damage. Learn more.

Physical Details

Dam Height 25 ft (taller than 69.7% in NY)
Dam Length175 ft
Dam TypeConcrete
Max Storage33 acre-ft
Normal Storage33 acre-ft
Surface Area4 acres
Drainage Area192 sq mi
Year Completed1909 (117 years old)
NID IDNY01345

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: July 14, 2008
State Regulated: Yes
Regulatory Agency: NYS DEC

Ownership

ENEL - ENGINEERING AND REGULATORY AFFAIRS

Private

Nearby Dams

Frequently Asked Questions

What is the hazard classification of High Falls Dam At Copenhagen?

High Falls Dam At Copenhagen 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 High Falls Dam At Copenhagen?

High Falls Dam At Copenhagen is owned by ENEL - ENGINEERING AND REGULATORY AFFAIRS (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was High Falls Dam At Copenhagen built?

High Falls Dam At Copenhagen was completed in 1909, making it 117 years old. Many U.S. dams were built between the 1930s and 1970s during a period of major infrastructure investment.

What is the primary purpose of High Falls Dam At Copenhagen?

High Falls Dam At Copenhagen serves the following purposes: Hydroelectric. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.

How tall is High Falls Dam At Copenhagen?

High Falls Dam At Copenhagen has a dam height of 25 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 High Falls Dam At Copenhagen last inspected?

High Falls Dam At Copenhagen was last inspected on July 14, 2008. 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.