Ohio Power Company Pond Mmv-11 Dam Reservoir Report
Last Updated: December 5, 2025
Ohio Power Company Pond Mmv-11 Dam, located in Unionville, Ohio, is a privately owned structure regulated by the Department of Natural Resources.
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Summary
Completed in 1964, this Earth-type dam stands at a height of 50 feet and has a total length of 1065 feet. Its primary purpose is for tailings storage, with a storage capacity of 614 acre-feet and a surface area of 6.4 acres.
With a significant hazard potential and fair condition assessment, the dam has a scheduled inspection frequency of 5 years. The last inspection took place in October 2018, and the dam is equipped with emergency action plans, although their details are currently unspecified. The dam poses a risk due to its proximity to the tributary of Meigs Creek, with a drainage area of 0.57 square miles and a maximum discharge capacity of 284 cubic feet per second.
For water resource and climate enthusiasts, Ohio Power Company Pond Mmv-11 Dam serves as a critical infrastructure for tailings management in Morgan County. As an Earth-type dam with a long history of operation, its condition and regulatory oversight are essential factors to monitor for ensuring the safety and integrity of the structure. Understanding the role of this dam in water management and the potential risks associated with its operations is crucial in the broader context of sustainable resource utilization in the region.
Year Completed |
1964 |
Dam Length |
1065 |
Dam Height |
50 |
River Or Stream |
TRIBUTARY TO MEIGS CREEK |
Primary Dam Type |
Earth |
Surface Area |
6.4 |
Drainage Area |
0.57 |
Nid Storage |
614 |
Hazard Potential |
Significant |
Nid Height |
50 |
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 Mmv-11 Dam