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 401–421 of 421
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Bainbridge Quarry Lake Dam Geauga County | 13 | 1989 | Low | Fair |
| Badger Pond Dam Washington County | 28 | — | Low | Fair |
| Attica Wastewater Treatment Lagoon Seneca County | 16 | 2016 | Significant | Fair |
| Attica Upground Reservoir #2 Seneca County | 23 | 2006 | High | Fair |
| Aston Oaks Lake Dam Hamilton County | 66 | 2000 | High | Fair |
| Ashley Lake Dam Knox County | 25 | 1971 | Significant | Fair |
| Arrowhead Lake Dam No. 1 Mahoning County | 30 | 1952 | Significant | Fair |
| Arnold Lake Dam Tuscarawas County | 35 | — | Low | Fair |
| Arnett Lake No. 2 Dam Warren County | 13 | 1967 | Significant | Fair |
| Arnett Lake No. 1 Dam Warren County | 26 | 1967 | Significant | Fair |
| Arnett Lake Dam Pike County | 22 | 1973 | High | Fair |
| Appleseed Ridge Lake No. 1 Dam Logan County | 43 | 1968 | Significant | Fair |
| Appalachian Wildlife Area Pond Mb-165 Dam Morgan County | 31 | 1959 | Significant | Fair |
| Ansonia Sewage Lagoon I Darke County | 12 | 1970 | Significant | Fair |
| Anglers Paradise Lake Dam Fairfield County | 35 | 1951 | Significant | Fair |
| Anderson Lakes Farm Dam No. 1 Warren County | 19 | — | Significant | Fair |
| Alum Creek Upground Reservoir No. 2 Delaware County | 36 | 2004 | High | Fair |
| Alum Creek Upground Reservoir Delaware County | 24 | 1997 | High | Fair |
| Alliance Sludge Lagoons Stark County | 12 | 1993 | Significant | Fair |
| Allen No. 2 Dam (Racetrack Dam) Perry County | 35 | 1983 | Low | Fair |
| Allen No. 1 Dam Perry County | 59 | 1981 | High | Fair |
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Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.