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 339
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Zupan Lake Dam Ashland County | 29 | 2000 | Low | Satisfactory |
| Zoldan Pond Dam Mahoning County | 31 | 2003 | Low | Satisfactory |
| Zion Lake Dam Harrison County | 37 | 1963 | Low | Fair |
| Work Lake No. 2 Dam Erie County | 29 | 1966 | Low | Poor |
| Wolf Lakes Dams Medina County | 29 | 1958 | Low | Satisfactory |
| Winchester Lake Dam Adams County | 28 | 1953 | Low | Poor |
| Willis Lake Dam Highland County | 31 | 1995 | Low | Fair |
| Williams Lake Dam Champaign County | 26 | 1964 | Low | Poor |
| Willard Lake Dam Huron County | 22 | 1955 | Low | Fair |
| Wieser Lake Dam Allen County | 15 | 1870 | Low | Fair |
| White Lake Dam Clermont County | 26 | — | Low | Fair |
| Wetherall Lake Dam Fairfield County | 25 | 1956 | Low | Fair |
| West Branch Channel Dam Trumbull County | 16 | — | Low | Poor |
| Werrmann Lake Dam Warren County | 26 | — | Low | Poor |
| Water'S Edge Dam Warren County | 23 | 1994 | Low | Fair |
| Waterloo Coal Company Dam Jackson County | 19 | — | Low | Poor |
| Wasmer Lake Dam Hamilton County | 27 | 1960 | Low | Fair |
| Wasmer Lake Dam Medina County | 20 | 1960 | Low | Satisfactory |
| Washington Co. Fish & Game Club Lake Dam Washington County | 18 | 1959 | Low | Poor |
| Walter C. Best Lake Dam Geauga County | 15 | — | Low | Satisfactory |
| Walden Lake Dam Fairfield County | 17 | 1958 | Low | Poor |
| Von Gunten Pond Dam Summit County | 30 | 1965 | Low | Poor |
| Vo-Ash Lake Dam Carroll County | 33 | 1956 | Low | Poor |
| Villa Lago Dam Summit County | 27 | — | Low | Poor |
| Valley Vista Golf Course Lake Dam Ross County | 27 | 1966 | Low | 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.