Delano Island
Key Takeaway
Delano Island is classified as low hazard in New York. It was completed in 1924 and is 102 years old. Its primary use is hydroelectric.
Physical Details
| Dam Height | 12 ft (taller than 23.2% in NY) |
| Dam Length | 200 ft |
| Dam Type | Concrete |
| Max Storage | 2.0K acre-ft |
| Normal Storage | 2.0K acre-ft |
| Surface Area | 190 acres |
| Drainage Area | 1,874 sq mi |
| Max Discharge | 32,800 cfs |
| Year Completed | 1924 (102 years old) |
| NID ID | NY00684 |
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
City of Watertown, NY
Local Government
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Low Hazard 31 ftFrequently Asked Questions
What is the hazard classification of Delano Island?
Delano 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 Delano Island?
Delano Island is owned by City of Watertown, NY (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Delano Island built?
Delano Island was completed in 1924, making it 102 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 Delano Island?
Delano Island serves the following purposes: Hydroelectric, Water Supply. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Delano Island?
Delano Island has a dam height of 12 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 Delano Island last inspected?
Delano Island was last inspected on June 14, 2018. Inspection dates indicate when a formal review occurred, not the results of that inspection.