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 26–50 of 564
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Baptist Foundation Lake Dam Clinton County | 36 | 1972 | Significant | Fair |
| Barhorst Lake Dam Shelby County | 33 | 1970 | Significant | Satisfactory |
| Basin `A' Hamilton County | 50 | 1976 | Significant | Poor |
| Basin `B' Hamilton County | 50 | 1981 | Significant | Poor |
| Bass Lake Dam Lake County | 20 | 1966 | Significant | Poor |
| Bates Pond Dam Jefferson County | 41 | 1960 | Significant | Poor |
| Bayberry Cove Development Dam Greene County | 15 | 1979 | Significant | Poor |
| Beaver Lake Dam Columbiana County | 18 | 1917 | Significant | Fair |
| Beckjord Ash Pond B Clermont County | 46 | — | Significant | Satisfactory |
| Beckjord Ash Pond C Dam Clermont County | 50 | — | Significant | Satisfactory |
| Beckjord Ash Pond C Ext. Dam Clermont County | 40 | 1985 | Significant | Fair |
| Beck Pond Dam Stark County | 25 | 2000 | Significant | Satisfactory |
| Bella Luna Lake Dam No. 1 Geauga County | 22 | — | Significant | Poor |
| Bellevue Upground Reservoir No. 5 Huron County | 28 | 1946 | Significant | Fair |
| Bellwood Lake Dam Geauga County | 27 | 1960 | Significant | Poor |
| Bel-Wood Country Club Lake No. 2 Dam Warren County | 47 | 1965 | Significant | Fair |
| Bethel Upground Reservoir No. 2 Clermont County | 23 | 1991 | Significant | Poor |
| Bidwell/Porter Wwt Lagoon Gallia County | 18 | 1999 | Significant | Satisfactory |
| Big Island Wetland Dam Marion County | 9 | 1995 | Significant | Poor |
| Bilinovich Lake Dam Guernsey County | 57 | 1992 | Significant | Poor |
| Blacklidge Lake Dam Logan County | 27 | 1972 | Significant | Fair |
| Blanchester Reservoir No. 5 Dam Clinton County | 14 | 1970 | Significant | Fair |
| Blanchester Reservoirs No. 1 & 2 Dam Clinton County | 10 | 1924 | Significant | Fair |
| Blend Lake Dam Stark County | 23 | — | Significant | Fair |
| Bloomingdale North Lake Dam Jefferson County | 33 | 1975 | Significant | Poor |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.