Heuvelton

Oswegatchie River· St. Lawrence, New York· Built 1923· Concrete· 19 ft tall
Significant Hazard Hydroelectric Private

Key Takeaway

Heuvelton is classified as significant hazard in New York. It was completed in 1923 and is 103 years old. Its primary use is hydroelectric. Significant hazard means failure could cause economic or environmental damage. Learn more.

Physical Details

Dam Height 19 ft (taller than 53.6% in NY)
Dam Length284 ft
Dam TypeConcrete
Max Storage405 acre-ft
Normal Storage405 acre-ft
Surface Area239 acres
Drainage Area995 sq mi
Max Discharge23,000 cfs
Year Completed1923 (103 years old)
NID IDNY00411

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: June 15, 2022
State Regulated: No

Ownership

Erie Boulevard Hydropower, L.P.

Private

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Heuvelton?

Heuvelton 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 Heuvelton?

Heuvelton is owned by Erie Boulevard Hydropower, L.P. (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Heuvelton built?

Heuvelton was completed in 1923, making it 103 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 Heuvelton?

Heuvelton 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 Heuvelton?

Heuvelton has a dam height of 19 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 Heuvelton last inspected?

Heuvelton was last inspected on June 15, 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.