Ohio Dams
1,377 dams tracked by the National Inventory of Dams
Total Dams
1,377
High Hazard
397
28.8%
Poor / Unsatisfactory
509
Average Age
65 yrs
Hazard Classification
High397 (28.8%)
Significant564 (41.0%)
Low339 (24.6%)
Condition Assessment
Satisfactory324 (23.5%)
Fair421 (30.6%)
Poor / Unsatisfactory509 (37.0%)
Not Rated123 (8.9%)
Federal
39
State
115
Local
356
Private
753
Tallest Dams
High Hazard Dams
Poor Condition Dams
All Dams in Ohio
Showing 51–75 of 324
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| St. Clairsville Reservoir No. 1 Dam Belmont County | 36 | 1929 | High | Satisfactory |
| South Montgomery County Low Dam Montgomery County | 11 | 1988 | Significant | Satisfactory |
| South Central Wwt Lagoon Williams County | 18 | 2011 | Significant | Satisfactory |
| Snortin Ridge Farm Lake Dam Fairfield County | 57 | 1964 | Significant | Satisfactory |
| Slifko Pond Dam Wayne County | 17 | 1999 | Low | Satisfactory |
| Slate Run Metro Park Dam Pickaway County | 15 | 1993 | Low | Satisfactory |
| Simco Sediment Pond E-55 Dam Coshocton County | 34 | 1989 | Low | Satisfactory |
| Silver Creek Lake Dam Summit County | 25 | 1990 | High | Satisfactory |
| Silver Creek Dam Madison County | 44 | 1968 | Significant | Satisfactory |
| Shugert Lane Dam Guernsey County | 25 | — | Significant | Satisfactory |
| Shilo Lake Dam Lorain County | 29 | 1950 | Low | Satisfactory |
| Shadow Hill Lake Dam Geauga County | 21 | 1973 | High | Satisfactory |
| Sellers Lake Dam Ashland County | 35 | 1963 | Low | Satisfactory |
| Schoonover Lake Dam Allen County | 17 | 1890 | Low | Satisfactory |
| Savannah Wwtp Lagoons Ashland County | 44 | 1996 | Significant | Satisfactory |
| Sammis Station North Bottom Ash Pond Dam Jefferson County | 21 | — | Significant | Satisfactory |
| Salem Regional Campus Lake Dam Columbiana County | 26 | 1977 | Significant | Satisfactory |
| Rustic Lake Dam Lorain County | 21 | 1964 | Low | Satisfactory |
| Rustic Hills Lake Dam Medina County | 30 | 1961 | High | Satisfactory |
| Rushcreek Structure No. Vii-C Fairfield County | 36 | 1976 | Significant | Satisfactory |
| Rushcreek Structure No. Vii-A Fairfield County | 41 | 1985 | High | Satisfactory |
| Rushcreek Structure No. Vi-F Fairfield County | 33 | 1987 | Significant | Satisfactory |
| Rushcreek Structure No. Vi-D Fairfield County | 52 | 1975 | High | Satisfactory |
| Rushcreek Structure No. V-B Fairfield County | 32 | 1971 | Significant | Satisfactory |
| Rushcreek Structure No. Iv-E Perry County | 29 | 1979 | Significant | Satisfactory |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.