Lefferts Grist Mill Dam
Key Takeaway
Lefferts Grist Mill Dam is classified as low hazard in New York. It was completed in 1800 and is 226 years old. Its primary use is recreation.
Physical Details
| Dam Height | 8 ft (taller than 5.1% in NY) |
| Dam Length | 730 ft |
| Dam Type | Earth |
| Max Storage | 54 acre-ft |
| Normal Storage | 27 acre-ft |
| Surface Area | 15 acres |
| Max Discharge | 360 cfs |
| Year Completed | 1800 (226 years old) |
| NID ID | NY01502 |
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
NATURE CONSERVANCY INC
Private
Nearby Dams
Frequently Asked Questions
What is the hazard classification of Lefferts Grist Mill Dam?
Lefferts Grist Mill 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 Lefferts Grist Mill Dam?
Lefferts Grist Mill Dam is owned by NATURE CONSERVANCY INC (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Lefferts Grist Mill Dam built?
Lefferts Grist Mill Dam was completed in 1800, making it 226 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 Lefferts Grist Mill Dam?
Lefferts Grist Mill 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 Lefferts Grist Mill Dam?
Lefferts Grist Mill Dam has a dam height of 8 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 Lefferts Grist Mill Dam last inspected?
Lefferts Grist Mill Dam was last inspected on May 5, 2009. Inspection dates indicate when a formal review occurred, not the results of that inspection.