Chasm

Salmon River· Franklin, New York· Built 1913· Concrete· 25 ft tall
Low Hazard Hydroelectric Not Listed

Key Takeaway

Chasm is classified as low hazard in New York. It was completed in 1913 and is 113 years old. Its primary use is hydroelectric.

Physical Details

Dam Height 25 ft (taller than 69.7% in NY)
Dam Length209 ft
Dam TypeConcrete
Max Storage74 acre-ft
Normal Storage74 acre-ft
Surface Area22 acres
Drainage Area126 sq mi
Max Discharge5,500 cfs
Year Completed1913 (113 years old)
NID IDNY00469

Safety Information

Low Hazard

No probable loss of human life and low economic/environmental losses expected.

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

Emergency Action Plan: No
Last Inspection: July 13, 2022
State Regulated: No

Ownership

Not Listed

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Memorial Recreation Pond Dam

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Deer River Flow Dam

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Twin Ponds Dam

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Lake Florence Dam

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Macomb

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Forge Dam

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Frequently Asked Questions

What is the hazard classification of Chasm?

Chasm is classified as Low Hazard. No probable loss of human life and low economic/environmental losses expected. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.

Who owns and operates Chasm?

Chasm is owned by information not available (Not Listed). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Chasm built?

Chasm was completed in 1913, making it 113 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 Chasm?

Chasm 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 Chasm?

Chasm 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 Chasm last inspected?

Chasm was last inspected on July 13, 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.