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 1101–1125 of 1,377
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Scioto County Sludge Lagoon Scioto County | 46 | 1980 | Significant | Fair |
| Scioto Hills Baptist Camp Lake Dam Scioto County | 33 | 1950 | Low | Fair |
| Sedimentation Pond No. 1 Dam Clermont County | 28 | 2000 | Significant | Poor |
| Seleski Lake No. 2 Dam Harrison County | 39 | 1963 | Significant | Poor |
| Sellers Lake Dam Ashland County | 35 | 1963 | Low | Satisfactory |
| Seneca Lake Peninsula Dmra Pond Dam Noble County | 40 | 2020 | Undetermined | Not Rated |
| Senecaville Dam Guernsey County | 45 | 1937 | High | Not Available |
| Sevakeen Country Club Lake Dam Columbiana County | 17 | 1925 | Significant | Poor |
| Seven Springs Lake Dam Medina County | 40 | 1961 | High | Poor |
| Shadow Hill Lake Dam Geauga County | 21 | 1973 | High | Satisfactory |
| Shadow Lake Dam Monroe County | 27 | — | Significant | Poor |
| Shady Grove Dam Jackson County | 16 | 1962 | Significant | Fair |
| Shady Hollow Pond Dam Stark County | 14 | — | Low | Poor |
| Shaker Run Dam Warren County | 90 | 1973 | High | Fair |
| Shangri-La Ski Club Lake Dam Geauga County | 25 | 1956 | Significant | Poor |
| Sharon Golf Club Lake Dam Medina County | 15 | 1960 | Low | Fair |
| Sharonville Retention Dam Hamilton County | 46 | 1967 | High | Fair |
| Shegog Lake Dam Guernsey County | 25 | — | Undetermined | Not Rated |
| Shelby Upground Reservoir No. 2 Richland County | 48 | 1955 | High | Fair |
| Shelby Upground Reservoir No. 3 Richland County | 28 | 1993 | High | Fair |
| Shelton Lake Dam Perry County | 26 | 1974 | Low | Poor |
| Sherwood Forrest Campgrounds Lake Dam Medina County | 33 | — | Low | Poor |
| Shilo Lake Dam Lorain County | 29 | 1950 | Low | Satisfactory |
| Shore Lake Dam Champaign County | 18 | 1964 | Significant | Poor |
| Shreve Lake Dam Wayne County | 25 | 1962 | High | Unsatisfactory |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.