Sugar Island
Key Takeaway
Sugar Island is classified as low hazard in New York. It was completed in 1925 and is 101 years old. Its primary use is hydroelectric.
Physical Details
| Dam Height | 35 ft (taller than 83.6% in NY) |
| Dam Length | 256 ft |
| Dam Type | Gravity |
| Max Storage | 432 acre-ft |
| Normal Storage | 432 acre-ft |
| Surface Area | 29 acres |
| Drainage Area | 994 sq mi |
| Max Discharge | 15,500 cfs |
| Year Completed | 1925 (101 years old) |
| NID ID | NY00248 |
Safety Information
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?
Ownership
Erie Boulevard Hydropower, L.P.
Private
Nearby Dams
Hannawa
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Low Hazard 34 ftPotsdam - West Dam
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Low Hazard 11 ftPotsdam - East Dam
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Low Hazard 7 ftSissonville
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Low Hazard 20 ftHigley
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High Hazard 37 ftFrequently Asked Questions
What is the hazard classification of Sugar Island?
Sugar Island 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 Sugar Island?
Sugar Island is owned by Erie Boulevard Hydropower, L.P. (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Sugar Island built?
Sugar Island was completed in 1925, making it 101 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 Sugar Island?
Sugar Island 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 Sugar Island?
Sugar Island has a dam height of 35 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 Sugar Island last inspected?
Sugar Island was last inspected on May 13, 2019. Inspection dates indicate when a formal review occurred, not the results of that inspection.