Jm Stuart Station Ash Pond No. 3a Reservoir Report
Last Updated: December 5, 2025
Jm Stuart Station Ash Pond No.
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Summary
3a, located in Adams County, Ohio, is a significant earth dam structure completed in 1978 with a primary purpose of tailings storage. Owned by the public utility Dayton Power and Light Co. in collaboration with Bowser-Morner, this dam stands at a height of 25.6 feet and has a storage capacity of 1257 acre-feet, serving as a crucial component of water resource management in the region. The dam, situated along the Ohio River - off stream, is regulated and permitted by the Ohio Department of Natural Resources, ensuring its compliance with state laws and regulations.
With a surface area of 50.7 acres and a drainage area of 0.09 square miles, Jm Stuart Station Ash Pond No. 3a plays a vital role in managing tailings and maintaining environmental safety. The dam has been inspected regularly, with the last assessment conducted in June 2018, revealing a satisfactory condition and a significant hazard potential. Despite its age, the dam continues to meet safety guidelines and poses no immediate risk to surrounding communities. With proper risk management measures in place, including emergency action plans and regular inspections, the dam remains a crucial infrastructure for water resource and climate enthusiasts in the area.
As water resource and climate enthusiasts observe the operations of Jm Stuart Station Ash Pond No. 3a, they can appreciate the engineering efforts put into creating a safe and efficient structure for tailings management. With a focus on compliance with state regulations and a commitment to safety measures, this earth dam stands as a testament to responsible water resource management. As the dam continues to serve its purpose effectively, it remains a key component of the region's infrastructure, ensuring the sustainable utilization of water resources and the protection of surrounding ecosystems for years to come.
Year Completed |
1978 |
Dam Length |
6140 |
Dam Height |
25.6 |
River Or Stream |
OHIO RIVER - OFF STREAM |
Primary Dam Type |
Earth |
Surface Area |
50.7 |
Drainage Area |
0.09 |
Nid Storage |
1257 |
Hazard Potential |
Significant |
Nid Height |
26 |
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.
Jm Stuart Station Ash Pond No. 3a