Millwood Plant Dam Reservoir Report
Last Updated: December 5, 2025
The Millwood Plant Dam in Ohio is a privately owned structure regulated by the Department of Natural Resources.
°F
°F
mph
Wind
%
Humidity
Summary
It serves as a crucial water supply source, with a storage capacity of 30.6 million gallons and a normal storage level of 8.7 million gallons. Situated in Knox County, the dam stands at a height of 13.9 feet and spans 455 feet in length, providing water for both domestic and industrial purposes.
The dam's significant hazard potential is matched by its satisfactory condition assessment, ensuring the safety and reliability of the structure. Despite its private ownership, the dam is subject to state regulation, inspection, and enforcement, highlighting the commitment to maintaining high standards of operation and safety. The dam's location, close to the Kokosing River tributary, underscores its importance in water resource management in the region.
Enthusiasts of water resources and climate will find the Millwood Plant Dam a fascinating example of infrastructure designed to meet the water supply needs of a community. Its strategic location, state regulation, and robust storage capacity make it a key player in ensuring water security in the area. As climate change impacts water resources, dams like Millwood Plant Dam play a critical role in managing and distributing water effectively while maintaining a focus on safety and sustainability.
Dam Length |
455 |
Dam Height |
13.9 |
River Or Stream |
TRIBUTARY TO KOKOSING RIVER |
Primary Dam Type |
Earth |
Surface Area |
3.2 |
Drainage Area |
0.41 |
Nid Storage |
30.6 |
Hazard Potential |
Significant |
Nid Height |
14 |
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.
Millwood Plant Dam