Two Mile Run
Two Mile Run is an earth dam located in Venango County, Pennsylvania, built in 1971. It carries a High hazard potential classification and has a fair condition assessment.
About Two Mile Run
The primary purpose of Two Mile Run is flood risk reduction. The dam is designed to control downstream flooding by temporarily storing excess water during storms and releasing it at a controlled rate. The dam is owned by Venango County (local government). It impounds the Two Mile Run.
The dam stands 85 feet tall and stretches 1,000 feet across, creates a reservoir covering 144 acres, has a maximum storage capacity of 6,300 acre-feet, and collects water from a drainage area of 8 square miles. Completed in 1971, 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 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 10/13/2020.
At 85 feet, this dam is taller than 97% 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 | Venango |
| River/Stream | Two Mile Run |
| Coordinates | 41.46611, -79.77139 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 85 ft |
| Dam Height | 85 ft |
| Dam Length | 1,000 ft |
| Year Completed | 1971 (55 years old) |
Storage & Hydraulics
| NID Storage | 6,300 acre-ft |
| Max Storage | 6,300 acre-ft |
| Normal Storage | 3,270 acre-ft |
| Surface Area | 144 acres |
| Drainage Area | 8 sq mi |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | VENANGO COUNTY |
| Owner Type | Local Government |
| Hazard Classification | High |
| Condition Assessment | Fair |
| Last Inspection | 10/13/2020 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | PA00254 |
| Federal ID | PA00254 |
| More Info | State Dam Safety Program |