Wiscoy Dam
Wiscoy Dam is a concrete dam located in Allegany County, New York, built in 1921. It carries a Significant hazard potential classification.
About Wiscoy Dam
Wiscoy Dam is a dam in Allegany, New York. The dam is owned by Rochester Gas And Electric Corporation (public utility). It impounds the Wiscoy Creek near Wiscoy.
The dam stands 33 feet tall and stretches 240 feet across, creates a reservoir covering 11 acres, has a maximum storage capacity of 150 acre-feet, and collects water from a drainage area of 115 square miles. Completed in 1921, the structure is over a century old.
This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in loss of life. An emergency action plan is in place for this dam. The most recent inspection on record was 10/11/2022.
At 33 feet, this dam is taller than 78% of dams nationwide.
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Location
| State | New York |
| County | Allegany |
| Nearest City | Wiscoy |
| River/Stream | Wiscoy Creek |
| Coordinates | 42.50500, -78.08861 |
Physical Characteristics
| Dam Type | Concrete |
| NID Height | 33 ft |
| Dam Height | 33 ft |
| Dam Length | 240 ft |
| Year Completed | 1921 (105 years old) |
Storage & Hydraulics
| NID Storage | 150 acre-ft |
| Max Storage | 150 acre-ft |
| Normal Storage | 122 acre-ft |
| Surface Area | 11 acres |
| Drainage Area | 115 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Other |
| Owner | ROCHESTER GAS AND ELECTRIC CORPORATION |
| Owner Type | Public Utility |
| Hazard Classification | Significant |
| Condition Assessment | Not Rated |
| Last Inspection | 10/11/2022 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | NY00461 |
| Federal ID | NY00461 |
| More Info | State Dam Safety Program |