Dams in Clinton County, Ohio
20Total Dams
8High Hazard
10Significant
Dam Safety in Clinton County, Ohio
Clinton County has 20 dams tracked in the National Inventory of Dams. Of these, 8 are classified as high hazard — meaning failure would probably cause loss of human life. Another 10 carry a significant hazard classification. Currently, 6 dams have a condition assessment of poor or unsatisfactory.
The average dam in Clinton County is 60 years old. The most common purpose is water supply. The tallest dam is Cowan Lake Dam at 63 ft.
Explore more: Oldest dams in Ohio · Tallest dams · High risk dams · Largest reservoirs
| Dam | Hazard | Condition | Height (ft) | Purpose | Year |
|---|---|---|---|---|---|
| Cowan Lake Dam | High | Poor | 63 | Recreation | 1947 |
| Wilmington Upground Reservoir No. 2 | High | Satisfactory | 31 | Water Supply | 1963 |
| Blanchester Res No. 6 Dam | High | Fair | 24 | Water Supply | 2003 |
| Clinton County Tributary No. 4 Dam | High | Satisfactory | 20 | Flood Risk Reduction | 1976 |
| Wilmington Upground Reservoir No. 1 | High | Satisfactory | 19 | Water Supply | 1945 |
| Blanchester Reservoir No. 4 Dam | High | Unsatisfactory | 16 | Water Supply | 1950 |
| Blanchester Reservoir No. 3 Dam | High | Poor | 15 | Water Supply | 1934 |
| Clinton County Tributary No. 1 Dam | High | Satisfactory | 15 | Flood Risk Reduction | 1976 |
| Baptist Foundation Lake Dam | Significant | Fair | 36 | Recreation | 1972 |
| Burtonville Lake Dam | Significant | Fair | 25 | Recreation | 1972 |
| Snow Hill Inc. Lake Dam | Significant | Fair | 24 | Water Supply | 1969 |
| Roberts Lake Dam | Significant | Poor | 19 | Recreation | |
| Clarksville Upground Reservoir | Significant | Unsatisfactory | 18 | 1949 | |
| Blanchester Reservoir No. 5 Dam | Significant | Fair | 14 | Water Supply | 1970 |
| New Vienna Wastewater Treatment Lagoons | Significant | Fair | 14 | Tailings | 1987 |
| Houston Upground Reservoir | Significant | Poor | 13 | Water Supply | 1935 |
| Blanchester Reservoirs No. 1 & 2 Dam | Significant | Fair | 10 | Water Supply | 1924 |
| Clinton County Wwt Lagoon | Significant | Satisfactory | 10 | Debris Control | 2007 |
| Ellis Lake Dam | Low | Fair | 31 | Recreation | 1986 |
| Stokes Lake Dam | Low | Fair | 17 | Recreation | 1974 |