Keystone Station
Keystone Station is an earth dam located in Armstrong County, Pennsylvania, built in 1965. It carries a High hazard potential classification and has a satisfactory condition assessment.
About Keystone Station
The primary purpose of Keystone Station is grade stabilization. Grade stabilization dams prevent erosion by reducing the slope and velocity of water flowing through a channel. They're commonly used to stop gullies from deepening and to protect downstream land and infrastructure. The dam is owned by Genon Ne Management Company (private). It impounds the Plum Creek.
The dam stands 100 feet tall and stretches 1,200 feet across, creates a reservoir covering 880 acres, has a maximum storage capacity of 43,150 acre-feet, and collects water from a drainage area of 20 square miles. Completed in 1965, the structure is well into its service life at over 50 years 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 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 10/01/2020.
At 100 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 | Armstrong |
| River/Stream | Plum Creek |
| Coordinates | 40.72722, -79.30722 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 100 ft |
| Dam Height | 100 ft |
| Dam Length | 1,200 ft |
| Year Completed | 1965 (61 years old) |
Storage & Hydraulics
| NID Storage | 43,150 acre-ft |
| Max Storage | 43,150 acre-ft |
| Normal Storage | 27,000 acre-ft |
| Surface Area | 880 acres |
| Drainage Area | 20 sq mi |
Ownership & Safety
| Purpose | Grade Stabilization |
| Owner | GENON NE MANAGEMENT COMPANY |
| Owner Type | Private |
| Hazard Classification | High |
| Condition Assessment | Satisfactory |
| Last Inspection | 10/01/2020 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | PA00275 |
| Federal ID | PA00275 |
| More Info | State Dam Safety Program |