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 201–225 of 397
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Lake Mosier Upground Reservoir Hancock County | 25 | 1941 | High | Poor |
| Lake Mottram Upground Reservoir Hancock County | 20 | 1891 | High | Fair |
| Lake of The Four Seasons Dam Hocking County | 49 | 1966 | High | Satisfactory |
| Lake Rockwell Dam Portage County | 35 | 1913 | High | Poor |
| Lake Rupert Dam Vinton County | 40 | 1968 | High | Poor |
| Lake Seneca Dam Williams County | 36 | 1966 | High | Poor |
| Lake Shawnee Dam Greene County | 45 | 1963 | High | Fair |
| Lake Tomahawk Dam Columbiana County | 62 | 1966 | High | Poor |
| Lake Viering Dam Knox County | 47 | 1964 | High | Poor |
| Lakeview Cemetery Flood Control Dam Cuyahoga County | 89 | 1978 | High | Fair |
| Lake Waynoka Dam Brown County | 53 | 1973 | High | Satisfactory |
| Lake White Dam Pike County | 39 | 1935 | High | Fair |
| Landen Farm Lake Dam Warren County | 40 | 1975 | High | Satisfactory |
| Leesville Dam Carroll County | 74 | 1937 | High | Not Available |
| Lexington Glen Dam Delaware County | 23 | 1990 | High | Satisfactory |
| Lilley Lake Dam Warren County | 43 | 1954 | High | Poor |
| Lincoln Heights Upground Reservoir Hamilton County | 30 | 1942 | High | Fair |
| Lockington Dam Shelby County | 78 | 1922 | High | Fair |
| Loecy Pond Dam Geauga County | 23 | — | High | Satisfactory |
| Long'S Retreat Lake Dam Pike County | 28 | 1970 | High | Poor |
| Lords Lake Dam Stark County | 22 | 1985 | High | Satisfactory |
| 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 |
| Loyal Oak Lake Dam Summit County | 31 | 1930 | High | Satisfactory |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.