Workman Lake Dam
Workman Lake Dam is an earth dam located in Knox County, Ohio. It carries a Significant hazard potential classification and has a poor condition assessment.
About Workman Lake Dam
The primary purpose of Workman Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Carol A. Gros (private). It impounds the Tributary To Kokosing River near Walhonding.
The dam stands 30 feet tall and stretches 420 feet across, creates a reservoir covering 6 acres, has a maximum storage capacity of 89 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 poor, meaning the dam has recognized safety deficiencies that require remediation to address risks. 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 | 40.38750, -82.20972 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 30 ft |
| Dam Height | 30 ft |
| Dam Length | 420 ft |
Storage & Hydraulics
| NID Storage | 89 acre-ft |
| Max Storage | 89 acre-ft |
| Normal Storage | 40 acre-ft |
| Surface Area | 6 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 309 cfs |
Ownership & Safety
| Purpose | Recreation |
| Owner | Carol A. Gros |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Poor |
| Last Inspection | 11/12/2024 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | OH01866 |
| Federal ID | OH01866 |
| More Info | State Dam Safety Program |