Ohio Power Company Pond Mm-52 Dam Reservoir Report
Last Updated: December 23, 2025
The Ohio Power Company Pond Mm-52 Dam, located in Unionville, Ohio, is a privately owned structure regulated by the Department of Natural Resources.
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Summary
Built in 1962, this earth dam stands at 35 feet tall and stretches 950 feet in length, holding a storage capacity of 591.6 acre-feet. The primary purpose of this dam is for tailings management, with a normal storage capacity of 75.4 acre-feet covering a surface area of 19 acres.
Sitting on the banks of Sugartree Run in Morgan County, Ohio, the Ohio Power Company Pond Mm-52 Dam poses a significant hazard potential, but has been assessed to be in fair condition as of October 2018. With a fairly frequent inspection schedule of every 5 years, this dam is equipped with emergency action plans to ensure the safety of surrounding communities in the event of a breach. Despite its age, the dam continues to serve its intended purpose effectively, highlighting the importance of proper maintenance and monitoring in preserving water resources and mitigating climate-related risks in the region.
As a crucial part of the local water infrastructure, the Ohio Power Company Pond Mm-52 Dam stands as a reminder of the intersection between human activity and environmental stewardship. With a focus on tailings management and regulatory oversight from the state, this dam represents a balance between industrial needs and the protection of natural resources. Climate enthusiasts and water resource advocates can find inspiration in the ongoing maintenance and risk management efforts associated with this significant structure in Ohio's water landscape.
Year Completed |
1962 |
Dam Length |
950 |
Dam Height |
35 |
River Or Stream |
SUGARTREE RUN |
Primary Dam Type |
Earth |
Surface Area |
19 |
Drainage Area |
1.9 |
Nid Storage |
591.6 |
Hazard Potential |
Significant |
Nid Height |
35 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
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.
Ohio Power Company Pond Mm-52 Dam