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 451–475 of 501
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Thompson Lake Dam Mahoning County | 14 | — | Significant | Poor |
| Thompson Lake Dam Ashland County | 16 | 1972 | Significant | Poor |
| Timken Lake Dam Stark County | 17 | 1962 | Significant | Poor |
| Torok Pond Dam Medina County | 35 | 1958 | Low | Poor |
| Trail Lake Dam Portage County | 12 | — | Low | Poor |
| Tubaugh Lake Dam Monroe County | 27 | 1965 | Low | Poor |
| Turkey Creek Lake Dam Scioto County | 54 | 1966 | High | Poor |
| Turon Lake Dam Trumbull County | 19 | 1954 | Significant | Poor |
| Twelve Pack Lake Dam Tuscarawas County | 28 | 1985 | Low | Poor |
| Twin Lakes Upper Dam Franklin County | 25 | 1927 | Significant | Poor |
| Tycoon Lake Dam Gallia County | 29 | 1961 | High | Poor |
| Ukrainian American Youth Lake Dam Lorain County | 29 | 1965 | Low | Poor |
| University School Lake Dam Cuyahoga County | 53 | 1968 | Significant | Poor |
| Upper Girard Lake Dam Trumbull County | 55 | 1929 | High | Poor |
| Upper Sandusky Reservoir Dam Wyandot County | 31 | 1957 | Significant | Poor |
| Upper Woodsfield Reservoir Dam Monroe County | 31 | — | Significant | Poor |
| Van Buren Lake Dam Hancock County | 23 | 1939 | Significant | Poor |
| Varkony Pond Dam Harrison County | 49 | — | High | Poor |
| Veverka Lake Dam Medina County | 22 | 1966 | Significant | Poor |
| Villa Lago Dam Summit County | 27 | — | Low | Poor |
| Vo-Ash Lake Dam Carroll County | 33 | 1956 | Low | Poor |
| Von Gunten Pond Dam Summit County | 30 | 1965 | Low | Poor |
| Wagon Wheel Lake Dam Brown County | 14 | — | Significant | Poor |
| Walden Lake Dam Fairfield County | 17 | 1958 | Low | Poor |
| Waller Lake Dam Lawrence County | 24 | 1955 | High | Poor |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.