Sludge Bed No 4
Sludge Bed No 4 is an earth dam located in Butler County, Pennsylvania, built in 1984. It carries a High hazard potential classification and has a fair condition assessment.
About Sludge Bed No 4
Sludge Bed No 4 is a dam in Butler, Pennsylvania. The dam is owned by A K Steel Corporation (private). It impounds the Connoquenessing Creek.
The dam stands 30 feet tall and stretches 2,000 feet across, creates a reservoir covering 11 acres, has a maximum storage capacity of 210 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1984, the structure is 42 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 11/24/2020.
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 | Connoquenessing Creek |
| Coordinates | 40.84139, -79.92750 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 30 ft |
| Dam Height | 30 ft |
| Dam Length | 2,000 ft |
| Year Completed | 1984 (42 years old) |
Storage & Hydraulics
| NID Storage | 210 acre-ft |
| Max Storage | 210 acre-ft |
| Normal Storage | 186 acre-ft |
| Surface Area | 11 acres |
| Drainage Area | 0 sq mi |
Ownership & Safety
| Purpose | Other |
| Owner | A K STEEL CORPORATION |
| Owner Type | Private |
| Hazard Classification | High |
| Condition Assessment | Fair |
| Last Inspection | 11/24/2020 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | PA01230 |
| Federal ID | PA01230 |
| More Info | State Dam Safety Program |