New Rochelle Reservoir #1 Dam
Key Takeaway
New Rochelle Reservoir #1 Dam is classified as high hazard in New York. It was completed in 1894 and is 132 years old. Its primary use is recreation. 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 | 30 ft (taller than 78.3% in NY) |
| Dam Length | 680 ft |
| Dam Type | Masonry |
| Max Storage | 1.0K acre-ft |
| Normal Storage | 582 acre-ft |
| Surface Area | 62 acres |
| Drainage Area | 2 sq mi |
| Max Discharge | 744 cfs |
| Year Completed | 1894 (132 years old) |
| NID ID | NY00020 |
Safety Information
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?
Ownership
Block 138 Corporation;CITY OF NEW ROCHELLE;TOWNHOUSES AT LAKE ISLE ASSOCIATION
Local Government
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Significant Hazard 10 ftFrequently Asked Questions
What is the hazard classification of New Rochelle Reservoir #1 Dam?
New Rochelle Reservoir #1 Dam 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 New Rochelle Reservoir #1 Dam?
New Rochelle Reservoir #1 Dam is owned by Block 138 Corporation;CITY OF NEW ROCHELLE;TOWNHOUSES AT LAKE ISLE ASSOCIATION (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was New Rochelle Reservoir #1 Dam built?
New Rochelle Reservoir #1 Dam was completed in 1894, making it 132 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 New Rochelle Reservoir #1 Dam?
New Rochelle Reservoir #1 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 New Rochelle Reservoir #1 Dam?
New Rochelle Reservoir #1 Dam has a dam height of 30 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 New Rochelle Reservoir #1 Dam last inspected?
New Rochelle Reservoir #1 Dam was last inspected on November 9, 2020. Inspection dates indicate when a formal review occurred, not the results of that inspection.