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 26–50 of 564
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Werner Lake Dam Columbiana County | 19 | 1955 | Significant | Poor |
| 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 |
| Wauseon Upground Reservoir No. 1 Fulton County | 29 | 1921 | Significant | Poor |
| Waterloo Coal Double-Cell Slurry Dam Jackson County | 34 | 1981 | Significant | Poor |
| Washington Court House Ug No. 2 Dam Fayette County | 19 | 2001 | Significant | Fair |
| Walnut Hills Lake Dam Warren County | 24 | — | Significant | Poor |
| Walden Lake Dam Portage County | 26 | 1975 | Significant | Fair |
| Wakeman Wwt Lagoon Huron County | 13 | 1993 | Significant | Satisfactory |
| Wagon Wheel Lake Dam Brown County | 14 | — | Significant | Poor |
| Wadsworth Sludge Lagoon Medina County | 25 | 1990 | Significant | Fair |
| Wabash Structure No. 1 Dam Darke County | 37 | 1964 | Significant | Satisfactory |
| Village of Amanda Dam Fairfield County | 16 | 1992 | Significant | Satisfactory |
| Veverka Lake Dam Medina County | 22 | 1966 | Significant | Poor |
| Varian Lake No. 2 Dam Stark County | 35 | 1983 | Significant | Satisfactory |
| Varian Lake Dam Stark County | 32 | 1964 | Significant | Satisfactory |
| Van Buren Lake Dam Hancock County | 23 | 1939 | Significant | Poor |
| Uss/Kobe Lake Dam Lorain County | 15 | — | Significant | Satisfactory |
| Upper Woodsfield Reservoir Dam Monroe County | 31 | — | Significant | Poor |
| Upper Sandusky Reservoir Dam Wyandot County | 31 | 1957 | Significant | Poor |
| Upper Sandusky Reservoir #2 Wyandot County | 25 | 2005 | Significant | Satisfactory |
| University School Lake Dam Cuyahoga County | 53 | 1968 | Significant | Poor |
| Uke Ranch Lake Dam Ashland County | 29 | 1968 | Significant | Fair |
| Twin Lakes Upper Dam Franklin County | 25 | 1927 | Significant | Poor |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.