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 651–675 of 1,377
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Lake Hope Dam Vinton County | 34 | 1939 | Significant | Fair |
| Lake-In-The-Woods Dam Geauga County | 26 | 1985 | High | Fair |
| Lake Katharine Dam Jackson County | 27 | 1945 | High | Poor |
| Lake Kayla Dam Stark County | 31 | 1968 | Low | Fair |
| Lake Kenisee Dam Ashtabula County | 13 | 1974 | Significant | Fair |
| Lake Klein Dam Ashtabula County | 26 | 1965 | Undetermined | Not Rated |
| Lake Lakengren Dam Preble County | 74 | 1970 | High | Poor |
| Lake Lamberjack Upground Reservoir Hancock County | 19 | 1919 | High | Poor |
| Lake La Su An Dam Williams County | 19 | 1959 | Significant | Fair |
| Lake Lavere Dam Williams County | 11 | — | Significant | Fair |
| Lake Legendary Dam Muskingum County | 45 | 1968 | Significant | Satisfactory |
| Lake Litchfield Dam Summit County | 69 | 1975 | High | Satisfactory |
| Lake Logan Dam Hocking County | 43 | 1954 | High | Poor |
| Lake Loramie Dam Shelby County | 23 | 1844 | High | Poor |
| Lake Lorelei Dam Brown County | 42 | 1968 | Significant | Satisfactory |
| Lake Loretta Dam Fairfield County | 35 | — | Significant | Poor |
| Lake Louise Dam Stark County | 25 | 1983 | Low | Fair |
| Lake Louise Dam Geauga County | 25 | — | Significant | Poor |
| Lake Lucern Dam Stark County | 10 | 1927 | Significant | Poor |
| Lake Lucerne Dam Geauga County | 30 | 1922 | High | Poor |
| Lake Margaret Dam Scioto County | 35 | 1953 | Significant | Satisfactory |
| Lake Maria Dam Richland County | 40 | 1958 | Significant | Poor |
| Lake Marie Dam Wayne County | 23 | 1996 | Undetermined | Not Rated |
| Lake Marinole Dam Montgomery County | 29 | 1966 | High | Satisfactory |
| Lake Medina Dam Medina County | 40 | 1966 | High | Fair |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.