Pyrites Intake
Pyrites Intake is a concrete dam located in St. Lawrence County, New York, built in 1908. It carries a Low hazard potential classification and has a satisfactory condition assessment.
About Pyrites Intake
The primary purpose of Pyrites Intake 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 Pyrites Hydro, Llc (private). It impounds the Grass River near Canton.
The dam stands 27 feet tall and stretches 385 feet across, creates a reservoir covering 5 acres, has a maximum storage capacity of 27 acre-feet, and collects water from a drainage area of 333 square miles. Completed in 1908, 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 06/15/2022.
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Location
| State | New York |
| County | St. Lawrence |
| Nearest City | Canton |
| River/Stream | Grass River |
| Coordinates | 44.51650, -75.18770 |
Physical Characteristics
| Dam Type | Concrete |
| NID Height | 27 ft |
| Dam Height | 27 ft |
| Dam Length | 385 ft |
| Year Completed | 1908 (118 years old) |
Storage & Hydraulics
| NID Storage | 27 acre-ft |
| Max Storage | 27 acre-ft |
| Normal Storage | 27 acre-ft |
| Surface Area | 5 acres |
| Drainage Area | 333 sq mi |
| Spillway Type | None |
Ownership & Safety
| Purpose | Hydroelectric |
| Owner | Pyrites Hydro, LLC |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 06/15/2022 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | NY00015 |
| Federal ID | NY00015 |
| More Info | State Dam Safety Program |