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 276–300 of 324
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Steeplechase Lake Dam Summit County | 21 | 1989 | High | Satisfactory |
| St. Henry Wwt Lagoon Mercer County | 27 | 1988 | Significant | Satisfactory |
| Stingy Run Fly Ash Dam Gallia County | 93 | 1974 | High | Satisfactory |
| St. Marys Lime Sludge Lagoons Auglaize County | 13 | 1988 | Significant | Satisfactory |
| Stockport Mill Country Inn Water Power Project Morgan County | 20 | 1891 | High | Satisfactory |
| Strimple Creek Dam Hamilton County | 30 | 1995 | Low | Satisfactory |
| Stroman Lake Dam Champaign County | 38 | 1958 | Significant | Satisfactory |
| Sunrise Lake Dam Warren County | 54 | 1931 | High | Satisfactory |
| Sunset Lake Dam Medina County | 17 | — | Significant | Satisfactory |
| Sunset Lake Dam Coshocton County | 27 | 1947 | High | Satisfactory |
| Swan Lake Dam Butler County | 18 | 1953 | High | Satisfactory |
| Taylor Lake Dam Lorain County | 20 | 1968 | Low | Satisfactory |
| The Wilderness Lower Lake Dam Stark County | 22 | 1966 | Low | Satisfactory |
| Thoreau Pond Dam Franklin County | 25 | 1964 | High | Satisfactory |
| Timberlake No. 1 Dam Franklin County | 48 | — | Significant | Satisfactory |
| Traska Fwi Dam Noble County | 27 | — | Low | Satisfactory |
| Troy Low Head Dam Miami County | 10 | — | Significant | Satisfactory |
| Turner-Jordan Lake Dam Stark County | 8 | 1980 | Low | Satisfactory |
| Tuscarawas River Diversion Dam Summit County | 26 | 1956 | High | Satisfactory |
| Upper Sandusky Reservoir #2 Wyandot County | 25 | 2005 | Significant | Satisfactory |
| Upper Wabash Structure No. 3 Dam Mercer County | 28 | 1963 | High | Satisfactory |
| Uss/Kobe Lake Dam Lorain County | 15 | — | Significant | Satisfactory |
| Van Wert Upground Reservoir No. 3 Van Wert County | 26 | 2007 | High | Satisfactory |
| Varian Lake Dam Stark County | 32 | 1964 | Significant | Satisfactory |
| Varian Lake No. 2 Dam Stark County | 35 | 1983 | Significant | Satisfactory |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.