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 276–300 of 501
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Lake Wapusun Dam Wayne County | 34 | 1969 | Significant | Poor |
| Lake Wohelo Dam Carroll County | 15 | — | Low | Poor |
| Lakota Lake Dam Butler County | 58 | 1960 | Significant | Poor |
| Lang Lake Dam Fairfield County | 19 | 1965 | Low | Poor |
| Larrick Lake Dam Guernsey County | 35 | 1981 | Low | Poor |
| Laurel Lake Dam Morrow County | 20 | 1955 | Significant | Poor |
| Laycock Farm Pond No. 1 Dam Adams County | 41 | 1945 | Significant | Poor |
| Leeth Lake Dam Ross County | 42 | 1965 | Significant | Poor |
| Liggett Lake No. 1 Dam Union County | 19 | 1968 | Low | Poor |
| Lilley Lake Dam Warren County | 43 | 1954 | High | Poor |
| Lima Upground Reservoir Allen County | 25 | 1903 | Significant | Poor |
| Limpert Lower Lake Dam Ashtabula County | 20 | 1963 | Low | Poor |
| Little Mountain Dam "A" Lake County | 46 | — | Significant | Poor |
| Long'S Retreat Lake Dam Pike County | 28 | 1970 | High | Poor |
| Lost Creek Upground Reservoir Allen County | 38 | 1917 | High | Poor |
| Lower Jeffco Lake Dam Ashtabula County | 17 | 1963 | High | Poor |
| Lower Shaker Lake Dam Cuyahoga County | 17 | 1830 | High | Poor |
| Lower Wallace Lake Dam Columbiana County | 22 | — | Significant | Poor |
| Lower Woodsfield Reservoir Dam Monroe County | 47 | 1901 | Significant | Poor |
| Luehrs Lake Dam Ross County | 17 | — | Significant | Poor |
| Madison Lake Dam Madison County | 26 | 1946 | Significant | Poor |
| Malabu Lake Dam Jefferson County | 29 | 1961 | Low | Poor |
| Malaga Lake Dam Monroe County | 31 | — | Low | Poor |
| Manfull Lake Dam Columbiana County | 18 | 1951 | Significant | Poor |
| Maple Valley Lake Dam Tuscarawas County | 27 | 1970 | Significant | Poor |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.