Coldwater Wastewater Treatment Dam Reservoir Report
Last Updated: December 19, 2025
The Coldwater Wastewater Treatment Dam, located in Mercer County, Ohio, serves as a crucial infrastructure for managing tailings and regulating the flow of Hardin Creek.
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Summary
Constructed in 1991, this earth dam stands at a height of 25.3 feet and has a storage capacity of 674 acre-feet. Despite its primary purpose of tailings management, the dam also plays a significant role in protecting the surrounding area from potential hazards.
Owned and regulated by the local government, the Coldwater Wastewater Treatment Dam undergoes regular inspections to ensure its structural integrity and operational efficiency. With a hazard potential rated as significant, the dam has been assessed to be in satisfactory condition as of the most recent evaluation in October 2019. In the event of an emergency, the dam is equipped with protocols in place, although details on emergency action planning and risk management measures are currently not provided.
Situated within the Chicago District of the US Army Corps of Engineers, the Coldwater Wastewater Treatment Dam stands as a vital piece of water resource infrastructure in Ohio. With its important role in wastewater treatment and flood control along Hardin Creek, this dam serves as a key asset in safeguarding the local environment and community from potential risks and hazards.
Year Completed |
1991 |
Dam Length |
5400 |
Dam Height |
25.3 |
River Or Stream |
HARDIN CREEK |
Primary Dam Type |
Earth |
Drainage Area |
0.05 |
Nid Storage |
674 |
Hazard Potential |
Significant |
Nid Height |
25 |
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.
Coldwater Wastewater Treatment Dam