Union City Reservoir
Union City Reservoir is an earth dam located in Erie County, Pennsylvania, built in 1935. It carries a High hazard potential classification and has a poor condition assessment.
About Union City Reservoir
The primary purpose of Union City Reservoir 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 Union City Municipal Authority (local government). It impounds the Bentley Run.
The dam stands 36 feet tall and stretches 250 feet across, creates a reservoir covering 32 acres, has a maximum storage capacity of 632 acre-feet, and collects water from a drainage area of 2 square miles. Completed in 1935, the structure is well-established, with more than 75 years 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 poor, meaning the dam has recognized safety deficiencies that require remediation to address risks. An emergency action plan is in place for this dam. The most recent inspection on record was 12/03/2020.
At 36 feet, this dam is taller than 83% 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 | Erie |
| River/Stream | Bentley Run |
| Coordinates | 41.91278, -79.81500 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 36 ft |
| Dam Height | 36 ft |
| Dam Length | 250 ft |
| Year Completed | 1935 (91 years old) |
Storage & Hydraulics
| NID Storage | 632 acre-ft |
| Max Storage | 632 acre-ft |
| Normal Storage | 320 acre-ft |
| Surface Area | 32 acres |
| Drainage Area | 2 sq mi |
Ownership & Safety
| Purpose | Water Supply |
| Owner | UNION CITY MUNICIPAL AUTHORITY |
| Owner Type | Local Government |
| Hazard Classification | High |
| Condition Assessment | Poor |
| Last Inspection | 12/03/2020 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | PA00019 |
| Federal ID | PA00019 |
| More Info | State Dam Safety Program |