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 1026–1050 of 1,377
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Evergreen Lake Dam Lucas County | 20 | 1955 | Significant | Fair |
| Evans Lake Dam Mahoning County | 49 | 1948 | High | Fair |
| Essington Lake Dam Perry County | 20 | 1945 | High | Fair |
| Erdos Lake Dam Wayne County | 15 | 1983 | Low | Poor |
| Eramet Waste Retention Dam Washington County | 118 | 1982 | High | Satisfactory |
| Eramet Slag Tailings Pond Washington County | 25 | 1975 | Significant | Poor |
| Eramet Fluid Waste Pond 1a Washington County | 35 | 1975 | Significant | Poor |
| Equinus (Legendary Run) Lake Dam Clermont County | 45 | 2001 | High | Satisfactory |
| Epworth Park Lake Dam Belmont County | 15 | — | Significant | Poor |
| Eppley Lake Dam Lorain County | 33 | 1955 | Undetermined | Not Rated |
| Englewood Dam Montgomery County | 121 | 1922 | High | Fair |
| Elyria Country Club Low Head Dam Lorain County | 8 | — | Undetermined | Not Rated |
| Ellis Lake No. 2 Dam Wyandot County | 25 | 1955 | Significant | Fair |
| Ellis Lake Dam Wyandot County | 22 | 1961 | Significant | Poor |
| Ellis Lake Dam Clinton County | 31 | 1986 | Low | Fair |
| Ella Street Low Head Dam Seneca County | 9 | — | Significant | Satisfactory |
| Elks Country Club Lake Dam Scioto County | 28 | 1966 | Significant | Poor |
| Elk Lake Dam Warren County | 20 | 1964 | Low | Fair |
| Elkem Sludge Holding Pond 5c Dam Ashtabula County | 20 | 1988 | Significant | Fair |
| Elkem Fluid Waste Pond 3a Ashtabula County | 40 | 1967 | Significant | Fair |
| Elk Creek Meadow Ridge Pond #2 Dam Butler County | 23 | 1970 | Significant | Fair |
| Elk Creek Meadow Ridge Pond #1 Dam Butler County | 26 | 1970 | Significant | Fair |
| Eldon Reservoir Dam Guernsey County | 38 | 1933 | Low | Poor |
| Edison Wwt Lagoon Morrow County | 10 | 2000 | Significant | Satisfactory |
| Echo Valley Lake Dam Lorain County | 39 | 1999 | Low | Satisfactory |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.