Union City Reservoir Reservoir Report
Nearby: Union City Dam Clear Lake
Last Updated: December 15, 2025
Union City Reservoir, located in Erie, Pennsylvania, is a vital water supply reservoir owned by the local government and regulated by the Pennsylvania Department of Environmental Protection.
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Summary
Built in 1935 on Bentley Run, this Earth-type dam stands at 36 feet high and has a storage capacity of 632 acre-feet, serving as a crucial source of water for the surrounding area. With a surface area of 32 acres and a normal storage capacity of 320 acre-feet, the reservoir plays a significant role in meeting the water needs of Union Township.
Despite its importance, Union City Reservoir faces challenges in terms of its condition assessment, as it has been rated as poor with a high hazard potential. The dam's last inspection in December 2020 highlighted the need for improvements and maintenance to ensure its safety and functionality. With a designated inspection frequency of once per year, efforts are ongoing to address the dam's structural issues and mitigate potential risks. As water resource and climate enthusiasts, it is crucial to monitor the reservoir's condition and support initiatives that promote its long-term sustainability and resilience in the face of changing environmental conditions.
Year Completed |
1935 |
Dam Length |
250 |
Dam Height |
36 |
River Or Stream |
BENTLEY RUN |
Primary Dam Type |
Earth |
Surface Area |
32 |
Drainage Area |
2.6 |
Nid Storage |
632 |
Hazard Potential |
High |
Foundations |
Unlisted/Unknown |
Nid Height |
36 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
French Creek Near Union City
|
468cfs |
French Creek Near Wattsburg
|
137cfs |
Woodcock Creek At Blooming Valley
|
17cfs |
Woodcock Creek At Woodcock Creek Dam
|
61cfs |
Walnut Creek Upstream Pool
|
57cfs |
Brandy Run Near Girard
|
16cfs |
Dam Data Reference
Condition Assessment
SatisfactoryNo existing or potential dam safety deficiencies are recognized. Acceptable performance is expected under all loading conditions (static, hydrologic, seismic) in accordance with the minimum applicable state or federal regulatory criteria or tolerable risk guidelines.
Fair
No existing dam safety deficiencies are recognized for normal operating conditions. Rare or extreme hydrologic and/or seismic events may result in a dam safety deficiency. Risk may be in the range to take further action. Note: Rare or extreme event is defined by the regulatory agency based on their minimum
Poor A dam safety deficiency is recognized for normal operating conditions which may realistically occur. Remedial action is necessary. POOR may also be used when uncertainties exist as to critical analysis parameters which identify a potential dam safety deficiency. Investigations and studies are necessary.
Unsatisfactory
A dam safety deficiency is recognized that requires immediate or emergency remedial action for problem resolution.
Not Rated
The dam has not been inspected, is not under state or federal jurisdiction, or has been inspected but, for whatever reason, has not been rated.
Not Available
Dams for which the condition assessment is restricted to approved government users.
Hazard Potential Classification
HighDams assigned the high hazard potential classification are those where failure or mis-operation will probably cause loss of human life.
Significant
Dams assigned the significant hazard potential classification are those dams where failure or mis-operation results in no probable loss of human life but can cause economic loss, environment damage, disruption of lifeline facilities, or impact other concerns. Significant hazard potential classification dams are often located in predominantly rural or agricultural areas but could be in areas with population and significant infrastructure.
Low
Dams assigned the low hazard potential classification are those where failure or mis-operation results in no probable loss of human life and low economic and/or environmental losses. Losses are principally limited to the owner's property.
Undetermined
Dams for which a downstream hazard potential has not been designated or is not provided.
Not Available
Dams for which the downstream hazard potential is restricted to approved government users.
Union City Reservoir