Piney
Piney is a concrete dam located in Clarion County, Pennsylvania, built in 1924. It carries a High hazard potential classification and has a fair condition assessment.
About Piney
The primary purpose of Piney 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 Brookfield Renewable Power Llc Nyro (private). It impounds the Clarion River near Piney.
The dam stands 129 feet tall and stretches 784 feet across, creates a reservoir covering 653 acres, has a maximum storage capacity of 26,600 acre-feet, and collects water from a drainage area of 951 square miles. Completed in 1924, the structure is over a century old.
This dam carries a high hazard potential classification, which means that a failure or uncontrolled release of water would likely cause loss of human life. This classification reflects the consequences of failure, not the likelihood — it indicates that people live or work in the area downstream. Its condition is rated fair — the dam has minor deficiencies that are being addressed or do not pose an immediate safety threat. An emergency action plan is in place for this dam. The most recent inspection on record was 08/31/2022.
At 129 feet, this dam is taller than 98% of all dams in the United States.
Living Downstream
If you live or work downstream of this dam, consider taking these steps: learn your local evacuation routes, check whether your county emergency management office has a dam failure inundation map, and sign up for local emergency alerts. The Pennsylvania dam safety program can provide more specific information about emergency planning for this structure.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Pennsylvania |
| County | Clarion |
| Nearest City | Piney |
| River/Stream | Clarion River |
| Coordinates | 41.19190, -79.43360 |
Physical Characteristics
| Dam Type | Concrete |
| NID Height | 129 ft |
| Dam Height | 125 ft |
| Dam Length | 784 ft |
| Year Completed | 1924 (102 years old) |
Storage & Hydraulics
| NID Storage | 26,600 acre-ft |
| Max Storage | 26,600 acre-ft |
| Normal Storage | 26,600 acre-ft |
| Surface Area | 653 acres |
| Drainage Area | 951 sq mi |
| Max Discharge | 153,300 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Hydroelectric |
| Owner | Brookfield Renewable Power LLC NYRO |
| Owner Type | Private |
| Hazard Classification | High |
| Condition Assessment | Fair |
| Last Inspection | 08/31/2022 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | PA00514 |
| Federal ID | PA00514 |
| More Info | State Dam Safety Program |