Toronto

Mongaup River· Sullivan, New York· Built 1926· Other· 103 ft tall

High Hazard Hydroelectric Private

Key Takeaway

Toronto 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	103 ft (taller than 98.6% in NY)
Dam Length	1,620 ft
Dam Type	Other
Max Storage	25.2K acre-ft
Normal Storage	25.2K acre-ft

Surface Area	860 acres
Drainage Area	23 sq mi
Max Discharge	8,900 cfs
Year Completed	1926 (100 years old)
NID ID	NY00506

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 11, 2022

State Regulated: No

Ownership

Eagle Creek Hydro Power, LLC

Private

Nearby Dams

Hull Pond Dam

Sullivan, NY

Low Hazard 18 ft

Black Lake Dam

Sullivan, NY

Low Hazard 10 ft

Mountain Lake Dam

Sullivan, NY

Low Hazard 10 ft

Toronto Lake Dam

Sullivan, NY

Low Hazard 15 ft

Wasserlauf Dam

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Low Hazard 12 ft

Wells Pond Dam

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Low Hazard 10 ft

Lake Superior Dam

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Cliff Lake

Sullivan, NY

High Hazard 36 ft

Frequently Asked Questions

What is the hazard classification of Toronto?

Toronto 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 Toronto?

Toronto is owned by Eagle Creek Hydro Power, LLC (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Toronto built?

Toronto 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 Toronto?

Toronto 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 Toronto?

Toronto has a dam height of 103 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 Toronto last inspected?

Toronto was last inspected on August 11, 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.