Dams in Seneca County, Ohio
8Total Dams
2High Hazard
5Significant
Dam Safety in Seneca County, Ohio
Seneca County has 8 dams tracked in the National Inventory of Dams. Of these, 2 are classified as high hazard — meaning failure would probably cause loss of human life. Another 5 carry a significant hazard classification. Currently, 1 dams have a condition assessment of poor or unsatisfactory.
The average dam in Seneca County is 56 years old. The most common purpose is water supply. The tallest dam is Beaver Creek Upground Reservoir at 34 ft.
Explore more: Oldest dams in Ohio · Tallest dams · High risk dams · Largest reservoirs
Data note: Hazard potential describes the consequences if a dam failed; it does not predict the likelihood of failure. Inspection, condition, and emergency-plan fields can be incomplete or delayed. Check state dam-safety officials and local emergency managers for official guidance.
| Dam | Hazard | Condition | Height (ft) | Purpose | Year |
|---|---|---|---|---|---|
| Beaver Creek Upground Reservoir | High | Fair | 34 | Water Supply | 1971 |
| Attica Upground Reservoir #2 | High | Fair | 23 | Water Supply | 2006 |
| Mohawk Lake Dam | Significant | Satisfactory | 18 | Recreation | 1913 |
| Attica Wastewater Treatment Lagoon | Significant | Fair | 16 | Debris Control | 2016 |
| Attica Upground Reservoir | Significant | Poor | 14 | Water Supply | 1955 |
| Republic Wwt Lagoon | Significant | Satisfactory | 12 | Debris Control | 2003 |
| Ella Street Low Head Dam | Significant | Satisfactory | 9 | Water Supply | |
| Bacon Low Head Dam | Undetermined | 8 | Water Supply | 1922 |