Neutralized Water Impoundment 2
Neutralized Water Impoundment 2 is an earth dam located in Knox County, Ohio, built in 1989. It carries a Significant hazard potential classification and has a fair condition assessment.
About Neutralized Water Impoundment 2
The primary purpose of Neutralized Water Impoundment 2 is tailings. Tailings dams contain waste material from mining operations — typically a slurry of finely ground rock left over after valuable minerals have been extracted. These structures require ongoing monitoring because tailings can contain heavy metals and other contaminants. The dam is owned by Leister Limited. It impounds the Kokosing River near Walhonding.
The dam stands 22 feet tall and stretches 1,515 feet across, creates a reservoir covering 1 acres, and has a maximum storage capacity of 54 acre-feet. Completed in 1989, the structure is 37 years old.
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 | Kokosing River |
| Coordinates | 40.39000, -82.26500 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 22 ft |
| Dam Height | 22 ft |
| Dam Length | 1,515 ft |
| Year Completed | 1989 (37 years old) |
Storage & Hydraulics
| NID Storage | 54 acre-ft |
| Max Storage | 54 acre-ft |
| Surface Area | 1 acres |
| Max Discharge | 15 cfs |
Ownership & Safety
| Purpose | Tailings |
| 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 | OH02742 |
| Federal ID | OH02742 |
| More Info | State Dam Safety Program |