Ohio Power Company Pond Nb-90 Dam Reservoir Report
Last Updated: December 23, 2025
Ohio Power Company Pond Nb-90 Dam, located in Noble County, Ohio, is a privately owned structure regulated by the Department of Natural Resources.
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Summary
Built in 1974, this earth dam stands at a height of 50.8 feet and has a storage capacity of 1114 acre-feet, serving primarily for tailings disposal. The dam's purpose is to control water flow along Tiltons Run, with a drainage area of 2.81 square miles and a surface area of 5.5 acres.
With a significant hazard potential and fair condition assessment as of October 2018, Ohio Power Company Pond Nb-90 Dam is subject to regular inspections every 5 years. Despite its age, the dam has a maximum discharge capacity of 21,781 cubic feet per second, ensuring effective management of water levels in the area. It is important for water resource and climate enthusiasts to monitor the dam's maintenance and emergency preparedness measures to prevent any potential risks to the surrounding community and environment.
Year Completed |
1974 |
Dam Length |
605 |
Dam Height |
50.8 |
River Or Stream |
TILTONS RUN |
Primary Dam Type |
Earth |
Surface Area |
5.5 |
Drainage Area |
2.81 |
Nid Storage |
1114 |
Hazard Potential |
Significant |
Nid Height |
51 |
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 Nb-90 Dam