Minersville No 3
Minersville No 3 is an earth dam located in Schuylkill County, Pennsylvania, built in 1856. It carries a High hazard potential classification and has a satisfactory condition assessment.
About Minersville No 3
The primary purpose of Minersville No 3 is water supply. The dam stores water for municipal, industrial, or agricultural use, helping ensure a reliable supply for the surrounding area. The dam is owned by Municipal Authority Of The Borough Of Minersville (local government). It impounds the Dyer Run.
The dam stands 31 feet tall and stretches 230 feet across, creates a reservoir covering 2 acres, has a maximum storage capacity of 29 acre-feet, and collects water from a drainage area of 4 square miles. Completed in 1856, the structure is one of the older dams in the region, with over a century and a half of service.
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 11/10/2020.
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 | Schuylkill |
| River/Stream | Dyer Run |
| Coordinates | 40.72564, -76.26981 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 31 ft |
| Dam Height | 31 ft |
| Dam Length | 230 ft |
| Year Completed | 1856 (170 years old) |
Storage & Hydraulics
| NID Storage | 29 acre-ft |
| Max Storage | 29 acre-ft |
| Normal Storage | 17 acre-ft |
| Surface Area | 2 acres |
| Drainage Area | 4 sq mi |
Ownership & Safety
| Purpose | Water Supply |
| Owner | MUNICIPAL AUTHORITY OF THE BOROUGH OF MINERSVILLE |
| Owner Type | Local Government |
| Hazard Classification | High |
| Condition Assessment | Satisfactory |
| Last Inspection | 11/10/2020 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | PA00676 |
| Federal ID | PA00676 |
| More Info | State Dam Safety Program |