New Mill Pond Dam
Key Takeaway
New Mill Pond Dam is classified as low hazard in New York. It was completed in 1825 and is 201 years old. Its primary use is recreation.
Physical Details
| Dam Height | 15 ft (taller than 37.1% in NY) |
| Dam Length | 465 ft |
| Dam Type | Earth |
| Max Storage | 545 acre-ft |
| Normal Storage | 308 acre-ft |
| Surface Area | 109 acres |
| Drainage Area | 23 sq mi |
| Year Completed | 1825 (201 years old) |
| NID ID | NY01516 |
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
SUFFOLK COUNTY DEPARTMENT OF PUBLIC WORKS
Local Government
Nearby Dams
Frequently Asked Questions
What is the hazard classification of New Mill Pond Dam?
New Mill Pond 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 New Mill Pond Dam?
New Mill Pond Dam is owned by SUFFOLK COUNTY DEPARTMENT OF PUBLIC WORKS (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was New Mill Pond Dam built?
New Mill Pond Dam was completed in 1825, making it 201 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 Mill Pond Dam?
New Mill Pond 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 Mill Pond Dam?
New Mill Pond Dam has a dam height of 15 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 Mill Pond Dam last inspected?
New Mill Pond Dam was last inspected on October 14, 2011. Inspection dates indicate when a formal review occurred, not the results of that inspection.