Grasse River Dam
Key Takeaway
Grasse River Dam is classified as low hazard in New York. It was completed in 1881 and is 145 years old. Its primary use is flood risk reduction.
Physical Details
| Dam Height | 13 ft (taller than 29.9% in NY) |
| Dam Length | 135 ft |
| Dam Type | Rockfill |
| Max Storage | 4.5K acre-ft |
| Normal Storage | 95 acre-ft |
| Surface Area | 47 acres |
| Drainage Area | 44 sq mi |
| Max Discharge | 2,000 cfs |
| Year Completed | 1881 (145 years old) |
| NID ID | NY12651 |
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
NEW YORK STATE
State Government
Nearby Dams
Frequently Asked Questions
What is the hazard classification of Grasse River Dam?
Grasse River 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 Grasse River Dam?
Grasse River Dam is owned by NEW YORK STATE (State Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Grasse River Dam built?
Grasse River Dam was completed in 1881, making it 145 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 Grasse River Dam?
Grasse River Dam serves the following purposes: Flood Risk Reduction. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Grasse River Dam?
Grasse River Dam has a dam height of 13 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 Grasse River Dam last inspected?
Grasse River Dam was last inspected on September 17, 2014. Inspection dates indicate when a formal review occurred, not the results of that inspection.