Dams in Mercer County, Ohio
7Total Dams
2High Hazard
4Significant
| Dam | Hazard | Condition | Height (ft) | Purpose | Year |
|---|---|---|---|---|---|
| Upper Wabash Structure No. 3 Dam | High | Satisfactory | 28 | Flood Risk Reduction | 1963 |
| Grand Lake St. Marys - West Embankment | High | Poor | 20 | Recreation | 1841 |
| St. Henry Wwt Lagoon | Significant | Satisfactory | 27 | Tailings | 1988 |
| Coldwater Wastewater Treatment Dam | Significant | Satisfactory | 26 | Tailings | 1991 |
| Montezuma Club Island Wwt Lagoon Cell 4 | Significant | Fair | 17 | Debris Control | 2012 |
| Montezuma/club Island Wwt Lagoons | Significant | Fair | 17 | Tailings | 1985 |
| Upper Wabash Structure No. 2 | Low | Fair | 17 | Flood Risk Reduction | 1963 |