Fawn Mine #91 Refuse Impoundment
Fawn Mine #91 Refuse Impoundment is an earth dam located in Butler County, Pennsylvania. It carries a High hazard potential classification and has a fair condition assessment.
About Fawn Mine #91 Refuse Impoundment
Fawn Mine #91 Refuse Impoundment is a dam in Butler, Pennsylvania. The dam is owned by Greenspace Land, Inc. (private). It impounds the Tr Lardintown Run.
The dam stands 120 feet tall and stretches 1,250 feet across, creates a reservoir covering 24 acres, has a maximum storage capacity of 985 acre-feet, and collects water from a drainage area of 0 square miles.
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. Notably, no emergency action plan is currently on file for this high-hazard dam. The most recent inspection on record was 10/09/2018. That was 7 years ago, which is on the longer end for a high-hazard structure.
At 120 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 | Butler |
| River/Stream | Tr Lardintown Run |
| Coordinates | 40.69556, -79.81861 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 120 ft |
| Dam Height | 120 ft |
| Dam Length | 1,250 ft |
Storage & Hydraulics
| NID Storage | 985 acre-ft |
| Max Storage | 985 acre-ft |
| Normal Storage | 760 acre-ft |
| Surface Area | 24 acres |
| Drainage Area | 0 sq mi |
Ownership & Safety
| Purpose | Other |
| Owner | GREENSPACE LAND, INC. |
| Owner Type | Private |
| Hazard Classification | High |
| Condition Assessment | Fair |
| Last Inspection | 10/09/2018 |
| Emergency Action Plan | No |
Identifiers
| NID ID | PA01527 |
| Federal ID | PA01527 |
| More Info | State Dam Safety Program |