Millwood Plant Dam
Millwood Plant Dam is an earth dam located in Knox County, Ohio. It carries a Significant hazard potential classification and has a fair condition assessment.
About Millwood Plant Dam
The primary purpose of Millwood Plant Dam is water supply. The dam stores water for municipal, industrial, or agricultural use, helping ensure a reliable supply for the surrounding area. The dam is owned by Leister Limited. It impounds the Tributary To Kokosing River near Walhonding.
The dam stands 14 feet tall and stretches 455 feet across, creates a reservoir covering 3 acres, has a maximum storage capacity of 30 acre-feet, and collects water from a drainage area of 0 square miles.
This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in loss of life. Its condition is rated fair — the dam has minor deficiencies that are being addressed or do not pose an immediate safety threat. An emergency action plan is in place for this dam. The most recent inspection on record was 11/12/2024.
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Location
| State | Ohio |
| County | Knox |
| Nearest City | Walhonding |
| River/Stream | Tributary To Kokosing River |
| Coordinates | 40.38778, -82.26444 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 14 ft |
| Dam Height | 14 ft |
| Dam Length | 455 ft |
Storage & Hydraulics
| NID Storage | 30 acre-ft |
| Max Storage | 30 acre-ft |
| Normal Storage | 8 acre-ft |
| Surface Area | 3 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 49 cfs |
Ownership & Safety
| Purpose | Water Supply |
| Owner | Leister Limited |
| Owner Type | Not Listed |
| Hazard Classification | Significant |
| Condition Assessment | Fair |
| Last Inspection | 11/12/2024 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | OH01860 |
| Federal ID | OH01860 |
| More Info | State Dam Safety Program |