Black River is a concrete dam located in Jefferson County, New York, built in 1919. It carries a Low hazard potential classification and has a satisfactory condition assessment.
Dam profile
NID height · 25 ft25 ft tall and 457 ft long, taller than 50% 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 concrete gravity section and the water level is illustrative.
About Black River
The primary purpose of Black River is hydroelectric. The dam generates hydroelectric power by channeling water through turbines, converting the energy of flowing water into electricity. The dam is owned by Erie Boulevard Hydropower, L.p. (private). It impounds the Black River near Black River.
The dam stands 25 feet tall and stretches 457 feet across, creates a reservoir covering 25 acres, has a maximum storage capacity of 123 acre-feet, and collects water from a drainage area of 1,856 square miles. Completed in 1919, the structure is over a century old.
This dam has a low hazard potential classification, meaning that failure would cause minimal damage, limited primarily to the dam owner's property, with no expected loss of life. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. The most recent inspection on record was 08/09/2019.
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Location
| State | New York |
| County | Jefferson |
| Nearest City | Black River |
| River/Stream | Black River |
| Coordinates | 44.00420, -75.80690 |
Physical Characteristics
| Dam Type | Concrete |
| NID Height | 25 ft |
| Dam Height | 25 ft |
| Dam Length | 457.5 ft |
| Year Completed | 1919 (107 years old) |
Storage & Hydraulics
| NID Storage | 123 acre-ft |
| Max Storage | 123 acre-ft |
| Normal Storage | 123 acre-ft |
| Surface Area | 25 acres |
| Drainage Area | 1,856 sq mi |
| Max Discharge | 33,000 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Hydroelectric |
| Owner | Erie Boulevard Hydropower, L.p. |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 08/09/2019 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | NY00635 |
| Federal ID | NY00635 |
| More Info | State Dam Safety Program |