Tannery - Dam "a"
Tannery - Dam "a" is a concrete dam located in Jefferson County, New York, built in 1914. It carries a Significant hazard potential classification and has a satisfactory condition assessment.
About Tannery - Dam "a"
The primary purpose of Tannery - Dam "a" is hydroelectric. The dam generates hydroelectric power by channeling water through turbines, converting the energy of flowing water into electricity. It impounds the Black River near Carthage.
The dam stands 14 feet tall and stretches 215 feet across, creates a reservoir covering 8 acres, has a maximum storage capacity of 68 acre-feet, and collects water from a drainage area of 1,807 square miles. Completed in 1914, 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. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. An emergency action plan is in place for this dam. The most recent inspection on record was 06/17/2022.
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Location
| State | New York |
| County | Jefferson |
| Nearest City | Carthage |
| River/Stream | Black River |
| Coordinates | 43.98170, -75.61580 |
Physical Characteristics
| Dam Type | Concrete |
| NID Height | 14 ft |
| Dam Height | 14 ft |
| Dam Length | 215 ft |
| Year Completed | 1914 (112 years old) |
Storage & Hydraulics
| NID Storage | 68 acre-ft |
| Max Storage | 68 acre-ft |
| Normal Storage | 68 acre-ft |
| Surface Area | 8 acres |
| Drainage Area | 1,807 sq mi |
| Max Discharge | 2,800 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Hydroelectric |
| Owner Type | Not Listed |
| Hazard Classification | Significant |
| Condition Assessment | Satisfactory |
| Last Inspection | 06/17/2022 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | NY00298 |
| Federal ID | NY00298 |
| More Info | State Dam Safety Program |