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 526–550 of 564
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Bellevue Upground Reservoir No. 5 Huron County | 28 | 1946 | Significant | Fair |
| Bella Luna Lake Dam No. 1 Geauga County | 22 | — | Significant | Poor |
| Beck Pond Dam Stark County | 25 | 2000 | Significant | Satisfactory |
| Beckjord Ash Pond C Ext. Dam Clermont County | 40 | 1985 | Significant | Fair |
| Beckjord Ash Pond C Dam Clermont County | 50 | — | Significant | Satisfactory |
| Beckjord Ash Pond B Clermont County | 46 | — | Significant | Satisfactory |
| Beaver Lake Dam Columbiana County | 18 | 1917 | Significant | Fair |
| Bayberry Cove Development Dam Greene County | 15 | 1979 | Significant | Poor |
| Bates Pond Dam Jefferson County | 41 | 1960 | Significant | Poor |
| Bass Lake Dam Lake County | 20 | 1966 | Significant | Poor |
| Basin `B' Hamilton County | 50 | 1981 | Significant | Poor |
| Basin `A' Hamilton County | 50 | 1976 | Significant | Poor |
| Barhorst Lake Dam Shelby County | 33 | 1970 | Significant | Satisfactory |
| Baptist Foundation Lake Dam Clinton County | 36 | 1972 | Significant | Fair |
| Baker Pond Dam Monroe County | 25 | — | Significant | Poor |
| Baker Lake Dam Monroe County | 37 | — | Significant | Poor |
| Bailey Lake Dam Ashland County | 15 | — | Significant | Satisfactory |
| Bader Lake Dam Licking County | 22 | 1961 | Significant | Poor |
| Auglaize River Wwt Lagoon Defiance County | 12 | 2011 | Significant | Satisfactory |
| Attica Wastewater Treatment Lagoon Seneca County | 16 | 2016 | Significant | Fair |
| Attica Upground Reservoir Seneca County | 14 | 1955 | Significant | Poor |
| Ashley Waterworks Reservoir Delaware County | 12 | 1954 | Significant | Poor |
| Ashley Lake Dam Knox County | 25 | 1971 | Significant | Fair |
| Arrowhead Lake Dam No. 1 Mahoning County | 30 | 1952 | Significant | Fair |
| Arnett Lake No. 2 Dam Warren County | 13 | 1967 | Significant | Fair |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.