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 51–75 of 339
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Stoll Lake Dam Wayne County | 26 | 1956 | Low | Poor |
| Stokes Lake Dam Clinton County | 17 | 1974 | Low | Fair |
| St. John Vianney Seminary Lake Dam Jefferson County | 17 | 1942 | Low | Poor |
| Star Lite Lake Dam Fayette County | 25 | — | Low | Poor |
| Squaw Valley Lake Dam Stark County | 18 | 1964 | Low | Fair |
| Springwood Lake Dam Stark County | 24 | 1989 | Low | Fair |
| Spring Valley Lake Dam Columbiana County | 14 | — | Low | Poor |
| Spring Lake Dam Greene County | 29 | 1969 | Low | Fair |
| Spring Haven Lake Dam Carroll County | 26 | — | Low | Poor |
| Spencer Lake - North Dam Medina County | 14 | 1960 | Low | Fair |
| Sparrow Reservoir Dam Harrison County | 33 | 1949 | Low | Poor |
| South Sedimentation Basin Dam Perry County | 22 | 1991 | Low | Fair |
| Snyder'S Horse Farm Pond Dam Tuscarawas County | 25 | 1961 | Low | Poor |
| Slifko Pond Dam Wayne County | 17 | 1999 | Low | Satisfactory |
| Slate Run Metro Park Dam Pickaway County | 15 | 1993 | Low | Satisfactory |
| Simco Sediment Pond E-55 Dam Coshocton County | 34 | 1989 | Low | Satisfactory |
| Sili Lake Dam Ashtabula County | 15 | 1972 | Low | Poor |
| Shilo Lake Dam Lorain County | 29 | 1950 | Low | Satisfactory |
| Sherwood Forrest Campgrounds Lake Dam Medina County | 33 | — | Low | Poor |
| Shelton Lake Dam Perry County | 26 | 1974 | Low | Poor |
| Sharon Golf Club Lake Dam Medina County | 15 | 1960 | Low | Fair |
| Shady Hollow Pond Dam Stark County | 14 | — | Low | Poor |
| Sellers Lake Dam Ashland County | 35 | 1963 | Low | Satisfactory |
| Scioto Hills Baptist Camp Lake Dam Scioto County | 33 | 1950 | Low | Fair |
| Scio Pottery Lake Dam Harrison County | 31 | — | Low | Poor |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.