Donegal
Donegal is an earth dam located in Westmoreland County, Pennsylvania, built in 1967. It carries a High hazard potential classification and has a satisfactory condition assessment.
About Donegal
The primary purpose of Donegal is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Pa Fish & Boat Commission (state). It impounds the Fourmile Run.
The dam stands 32 feet tall and stretches 520 feet across, creates a reservoir covering 90 acres, has a maximum storage capacity of 1,650 acre-feet, and collects water from a drainage area of 5 square miles. Completed in 1967, 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 06/11/2020.
At 32 feet, this dam is taller than 76% of dams nationwide.
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 | Westmoreland |
| River/Stream | Fourmile Run |
| Coordinates | 40.14556, -79.37056 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 32 ft |
| Dam Height | 32 ft |
| Dam Length | 520 ft |
| Year Completed | 1967 (59 years old) |
Storage & Hydraulics
| NID Storage | 1,650 acre-ft |
| Max Storage | 1,650 acre-ft |
| Normal Storage | 900 acre-ft |
| Surface Area | 90 acres |
| Drainage Area | 5 sq mi |
Ownership & Safety
| Purpose | Recreation |
| Owner | PA FISH & BOAT COMMISSION |
| Owner Type | State |
| Hazard Classification | High |
| Condition Assessment | Satisfactory |
| Last Inspection | 06/11/2020 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | PA00457 |
| Federal ID | PA00457 |
| More Info | State Dam Safety Program |