Soft Maple Terminal

Beaver River· Lewis, New York· Built 1926· Other· 100 ft tall
High Hazard Hydroelectric Private

Key Takeaway

Soft Maple Terminal is classified as high hazard in New York. It was completed in 1926 and is 100 years old. Its primary use is hydroelectric. High hazard means loss of life is likely if the dam fails — it does not indicate the dam's current condition. Learn more.

Physical Details

Dam Height 100 ft (taller than 98.2% in NY)
Dam Length720 ft
Dam TypeOther
Max Storage2.7K acre-ft
Normal Storage2.7K acre-ft
Surface Area400 acres
Drainage Area240 sq mi
Max Discharge0 cfs
Year Completed1926 (100 years old)
NID IDNY00304

Safety Information

High Hazard

Loss of human life is likely if the dam fails.

Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?

Emergency Action Plan: Yes
Last Inspection: August 10, 2022
State Regulated: No

Ownership

Erie Boulevard Hydropower, L.P.

Private

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Soft Maple Terminal?

Soft Maple Terminal is classified as High Hazard. Loss of human life is likely if the dam fails. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.

Who owns and operates Soft Maple Terminal?

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

When was Soft Maple Terminal built?

Soft Maple Terminal was completed in 1926, making it 100 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 Soft Maple Terminal?

Soft Maple Terminal 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 Soft Maple Terminal?

Soft Maple Terminal has a dam height of 100 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 Soft Maple Terminal last inspected?

Soft Maple Terminal was last inspected on August 10, 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.