Lower Wallace Lake Dam
Lower Wallace Lake Dam is an earth dam located in Columbiana County, Ohio. It carries a Significant hazard potential classification and has a poor condition assessment.
About Lower Wallace Lake Dam
The primary purpose of Lower Wallace Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Dennis Scott Wallace (private). It impounds the Tributary To Leslie Run near Negley.
The dam stands 22 feet tall and stretches 450 feet across, creates a reservoir covering 3 acres, has a maximum storage capacity of 62 acre-feet, and collects water from a drainage area of 1 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. The most recent inspection on record was 05/30/2024.
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Location
| State | Ohio |
| County | Columbiana |
| Nearest City | Negley |
| River/Stream | Tributary To Leslie Run |
| Coordinates | 40.80667, -80.55500 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 22 ft |
| Dam Height | 22 ft |
| Dam Length | 450 ft |
Storage & Hydraulics
| NID Storage | 62 acre-ft |
| Max Storage | 62 acre-ft |
| Normal Storage | 12 acre-ft |
| Surface Area | 3 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 592 cfs |
Ownership & Safety
| Purpose | Recreation |
| Owner | Dennis Scott Wallace |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Poor |
| Last Inspection | 05/30/2024 |
| Emergency Action Plan | No |
Identifiers
| NID ID | OH01425 |
| Federal ID | OH01425 |
| More Info | State Dam Safety Program |