Diamond Lake Dam
Key Takeaway
Diamond Lake Dam is classified as low hazard in New York. It was completed in 1956 and is 70 years old. Its primary use is recreation.
Physical Details
| Dam Height | 11 ft (taller than 19.5% in NY) |
| Dam Length | 420 ft |
| Dam Type | Earth |
| Max Storage | 340 acre-ft |
| Normal Storage | 200 acre-ft |
| Surface Area | 40 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 340 cfs |
| Year Completed | 1956 (70 years old) |
| NID ID | NY00489 |
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
ORANGE COUNTY DEPARTMENT OF PARKS
Local Government
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Low Hazard 10 ftFrequently Asked Questions
What is the hazard classification of Diamond Lake Dam?
Diamond Lake Dam 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 Diamond Lake Dam?
Diamond Lake Dam is owned by ORANGE COUNTY DEPARTMENT OF PARKS (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Diamond Lake Dam built?
Diamond Lake Dam was completed in 1956, making it 70 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 Diamond Lake Dam?
Diamond Lake Dam serves the following purposes: Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Diamond Lake Dam?
Diamond Lake Dam has a dam height of 11 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 Diamond Lake Dam last inspected?
Diamond Lake Dam was last inspected on November 16, 1984. Inspection dates indicate when a formal review occurred, not the results of that inspection.