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 376–400 of 501
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Eramet Fluid Waste Pond 1a Washington County | 35 | 1975 | Significant | Poor |
| Epworth Park Lake Dam Belmont County | 15 | — | Significant | Poor |
| Ellis Lake Dam Wyandot County | 22 | 1961 | Significant | Poor |
| Elks Country Club Lake Dam Scioto County | 28 | 1966 | Significant | Poor |
| Eldon Reservoir Dam Guernsey County | 38 | 1933 | Low | Poor |
| Echo Lake Dam Miami County | 14 | 1876 | High | Poor |
| East Palestine Reservoir Dam Columbiana County | 18 | — | Significant | Poor |
| East Fork Buck Creek Structure I-B Champaign County | 38 | 1966 | Significant | Poor |
| East Candlewood Lake Dam Wood County | 18 | 1962 | Significant | Poor |
| East Branch Reservoir Dam Geauga County | 34 | 1939 | High | Poor |
| East Branch Black River Dam No. 2 Lorain County | 15 | — | Significant | Poor |
| Dush Lake Dam Wayne County | 13 | 1975 | Low | Poor |
| Donta Lake Dam Jackson County | 42 | 1965 | Significant | Poor |
| Di-Or Lake Dam Jackson County | 32 | 1972 | Significant | Poor |
| Diebel Lake Dam Hamilton County | 30 | 1980 | Low | Poor |
| Dickey Lake Dam Columbiana County | 14 | 1945 | Low | Poor |
| Dews Pond Dam Carroll County | 12 | 1972 | Low | Poor |
| Devils Den Park Lake No. 2 Dam Tuscarawas County | 29 | — | Low | Poor |
| Delta Reservoir No. 1 Fulton County | 22 | 1933 | High | Poor |
| Deer Lake Dam Muskingum County | 30 | 1957 | High | Poor |
| Deerfoot Lake Dam Perry County | 28 | — | Significant | Poor |
| Decker Lake Dam Miami County | 16 | 1940 | Significant | Poor |
| Darrow Lake No. 1 Dam (Upper) Guernsey County | 26 | 1960 | Significant | Poor |
| Dale Walborn Reservoir Dam Stark County | 37 | 1971 | High | Poor |
| Csonka Brothers Pond Dam Columbiana County | 24 | 1975 | Significant | Poor |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.