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 526–550 of 564
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Village of Amanda Dam Fairfield County | 16 | 1992 | Significant | Satisfactory |
| Wabash Structure No. 1 Dam Darke County | 37 | 1964 | Significant | Satisfactory |
| Wadsworth Sludge Lagoon Medina County | 25 | 1990 | Significant | Fair |
| Wagon Wheel Lake Dam Brown County | 14 | — | Significant | Poor |
| Wakeman Wwt Lagoon Huron County | 13 | 1993 | Significant | Satisfactory |
| Walden Lake Dam Portage County | 26 | 1975 | Significant | Fair |
| Walnut Hills Lake Dam Warren County | 24 | — | Significant | Poor |
| Washington Court House Ug No. 2 Dam Fayette County | 19 | 2001 | Significant | Fair |
| Waterloo Coal Double-Cell Slurry Dam Jackson County | 34 | 1981 | Significant | Poor |
| Wauseon Upground Reservoir No. 1 Fulton County | 29 | 1921 | Significant | Poor |
| Wayne Wwt Lagoon Wood County | 9 | 1996 | Significant | Satisfactory |
| Waynoka Wwt Lagoon Brown County | 13 | 1995 | Significant | Satisfactory |
| Wellington Reservoir No. 2 Dam Lorain County | 25 | 1928 | Significant | Poor |
| Werner Lake Dam Columbiana County | 19 | 1955 | Significant | Poor |
| West Mansfield Wwt Lagoon Logan County | 10 | 1997 | Significant | Fair |
| Westville Lake Dam Columbiana County | 29 | 1912 | Significant | Poor |
| Weymouth Valley Lake No. 1 Dam Medina County | 14 | 1968 | Significant | Poor |
| Whispering Hills Recreation Lake Dam Holmes County | 23 | 1968 | Significant | Poor |
| Wiemeyer Lake Dam Clermont County | 51 | 1986 | Significant | Fair |
| Willowdale Lake Dam Stark County | 27 | 1924 | Significant | Fair |
| Willow Lake Dam Medina County | 28 | — | Significant | Fair |
| Winchester Wwt Lagoon No. 2 Adams County | 25 | 2004 | Significant | Satisfactory |
| Winchester Wwt Lagoon No. 3 Adams County | 21 | 2004 | Significant | Satisfactory |
| Wingfoot Lake Dam Portage County | 14 | 1916 | Significant | Fair |
| Winton Woods Golf Course Lake "E" Dam Hamilton County | 50 | 1994 | Significant | Satisfactory |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.