Lyons Falls - Mill 3
Lyons Falls - Mill 3 is a concrete dam located in Lewis County, New York, built in 1922. It carries a Low hazard potential classification and has a satisfactory condition assessment.
About Lyons Falls - Mill 3
The primary purpose of Lyons Falls - Mill 3 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 Northbrook Lyons Falls, Llc (private). It impounds the Black River near Lyons Falls.
The dam stands 10 feet tall and stretches 430 feet across, creates a reservoir covering 130 acres, has a maximum storage capacity of 730 acre-feet, and collects water from a drainage area of 870 square miles. Completed in 1922, 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 09/24/2019.
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Location
| State | New York |
| County | Lewis |
| Nearest City | Lyons Falls |
| River/Stream | Black River |
| Coordinates | 43.61790, -75.35790 |
Physical Characteristics
| Dam Type | Concrete |
| NID Height | 10 ft |
| Dam Height | 10 ft |
| Dam Length | 430 ft |
| Year Completed | 1922 (104 years old) |
Storage & Hydraulics
| NID Storage | 730 acre-ft |
| Max Storage | 730 acre-ft |
| Normal Storage | 730 acre-ft |
| Surface Area | 130 acres |
| Drainage Area | 870 sq mi |
| Max Discharge | 35,513 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Hydroelectric |
| Owner | Northbrook Lyons Falls, LLC |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 09/24/2019 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | NY01503 |
| Federal ID | NY01503 |
| More Info | State Dam Safety Program |