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 1–25 of 397
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Acton Lake Dam Butler County | 62 | 1956 | High | Satisfactory |
| Adams Lake Dam Adams County | 34 | 1947 | High | Poor |
| Allen No. 1 Dam Perry County | 59 | 1981 | High | Fair |
| Altiers Lake Dam Perry County | 19 | 1949 | High | Poor |
| Alum Creek Dam Delaware County | 93 | 1974 | High | Not Available |
| Alum Creek Upground Reservoir Delaware County | 24 | 1997 | High | Fair |
| Alum Creek Upground Reservoir No. 2 Delaware County | 36 | 2004 | High | Fair |
| Amick Upground Reservoir Morrow County | 40 | 1968 | High | Poor |
| Apple Valley Lake Dam Knox County | 91 | 1971 | High | Poor |
| Archbold Upground Reservoir No. 1 Fulton County | 15 | 1957 | High | Poor |
| Archbold Upground Reservoir No. 2 Fulton County | 22 | 1961 | High | Poor |
| Arnett Lake Dam Pike County | 22 | 1973 | High | Fair |
| Artesian Lake Dam Ashland County | 18 | — | High | Poor |
| Ashtabula County Outdoor Club Lake Dam Ashtabula County | 22 | 1928 | High | Poor |
| Aston Oaks Lake Dam Hamilton County | 66 | 2000 | High | Fair |
| Attica Upground Reservoir #2 Seneca County | 23 | 2006 | High | Fair |
| Atwood Dam Tuscarawas County | 65 | 1936 | High | Not Available |
| Barnesville Lake Dam Belmont County | 32 | 1969 | High | Poor |
| Barnesville Reservoir No. 1 Dam Belmont County | 42 | 1904 | High | Fair |
| Barnesville Reservoir No. 2 Dam Belmont County | 48 | 1936 | High | Poor |
| Barnesville Reservoir No. 3 Dam Belmont County | 77 | 1965 | High | Poor |
| Basich Lake Dam Jefferson County | 38 | 1963 | High | Satisfactory |
| Beach City Dam Tuscarawas County | 68 | 1936 | High | Not Available |
| Bear Creek Lake Dam Scioto County | 26 | 1935 | High | Fair |
| Beaver Creek Upground Reservoir Seneca County | 34 | 1971 | 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.