Conewango Creek Site 13 Dam is an earth dam located in Cattaraugus County, New York, built in 1982. It carries a Significant hazard potential classification.
Dam profile
NID height · 39 ft39 ft tall and 1,400 ft long, taller than 85% of U.S. dams with a recorded height. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic embankment section and the water level is illustrative.
About Conewango Creek Site 13 Dam
The primary purpose of Conewango Creek Site 13 Dam is flood risk reduction. The dam is designed to control downstream flooding by temporarily storing excess water during storms and releasing it at a controlled rate. The dam is owned by Cattaraugus County;cattaraugus County;nys Dec Division of Fish and Wildlife (local government). It impounds the Conewango Creek near Kendall Corners.
The dam stands 39 feet tall and stretches 1,400 feet across, creates a reservoir covering 50 acres, has a maximum storage capacity of 1,778 acre-feet, and collects water from a drainage area of 7 square miles. Completed in 1982, the structure is 44 years 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 10/17/2024.
At 39 feet, this dam is taller than 85% of dams nationwide.
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Location
| State | New York |
| County | Cattaraugus |
| Nearest City | Kendall Corners |
| River/Stream | Conewango Creek |
| Coordinates | 42.30389, -78.91667 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 39 ft |
| Dam Height | 39 ft |
| Dam Length | 1,400 ft |
| Year Completed | 1982 (44 years old) |
Storage & Hydraulics
| NID Storage | 1,778 acre-ft |
| Max Storage | 1,778 acre-ft |
| Normal Storage | 321 acre-ft |
| Surface Area | 50 acres |
| Drainage Area | 7 sq mi |
| Max Discharge | 7,591 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Cattaraugus County;cattaraugus County;nys Dec Division of Fish and Wildlife |
| Owner Type | Local Government |
| Hazard Classification | Significant |
| Condition Assessment | Not assessed |
| Last Inspection | 10/17/2024 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | NY00609 |
| Federal ID | NY00609 |
| More Info | State Dam Safety Program |