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 1,377
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Whispering Hills Recreation Lake Dam Holmes County | 23 | 1968 | Significant | Poor |
| Weymouth Valley Lake No. 1 Dam Medina County | 14 | 1968 | Significant | Poor |
| Wetherall Lake Dam Fairfield County | 25 | 1956 | Low | Fair |
| Westwood Lake Dam Trumbull County | 18 | 1949 | Undetermined | Not Rated |
| Westville Lake Dam Columbiana County | 29 | 1912 | Significant | Poor |
| West Reservoir Dam Summit County | 22 | 1840 | High | Satisfactory |
| West Mansfield Wwt Lagoon Logan County | 10 | 1997 | Significant | Fair |
| West Fork of Mill Creek Dam Hamilton County | 106 | 1952 | High | Not Available |
| Westerville Reservoir Dam Delaware County | 47 | 1960 | High | Satisfactory |
| West Branch Channel Dam Trumbull County | 16 | — | Low | Poor |
| Werrmann Lake Dam Warren County | 26 | — | Low | Poor |
| Werner Lake Dam Columbiana County | 19 | 1955 | Significant | Poor |
| Wellston Reservoir Dam Jackson County | 41 | 1920 | High | Poor |
| Wellington Upground Reservoir Lorain County | 35 | 1972 | High | Fair |
| Wellington Reservoir No. 2 Dam Lorain County | 25 | 1928 | Significant | Poor |
| Waynoka Wwt Lagoon Brown County | 13 | 1995 | Significant | Satisfactory |
| Wayne Wwt Lagoon Wood County | 9 | 1996 | Significant | Satisfactory |
| Waynedale Stock Farm Lake Dam Wayne County | 10 | — | Undetermined | Not Rated |
| Wauseon Upground Reservoir No. 2 Fulton County | 26 | 1934 | High | Fair |
| Wauseon Upground Reservoir No. 1 Fulton County | 29 | 1921 | Significant | Poor |
| Water'S Edge Dam Warren County | 23 | 1994 | Low | Fair |
| Waterloo Coal Double-Cell Slurry Dam Jackson County | 34 | 1981 | Significant | Poor |
| Waterloo Coal Company Dam Jackson County | 19 | — | Low | Poor |
| Wasmer Lake Dam Medina County | 20 | 1960 | Low | Satisfactory |
| Wasmer Lake Dam Hamilton County | 27 | 1960 | Low | Fair |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.