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 324
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| City of Hudson Upper Lake Dam Summit County | 21 | — | Significant | Satisfactory |
| City of Shaker Heights Dam Cuyahoga County | 24 | — | Significant | Satisfactory |
| Clague Park Lake Dam Cuyahoga County | 20 | 1994 | Low | Satisfactory |
| Clinton County Tributary No. 1 Dam Clinton County | 15 | 1976 | High | Satisfactory |
| Clinton County Tributary No. 4 Dam Clinton County | 20 | 1976 | High | Satisfactory |
| Clinton County Wwt Lagoon Clinton County | 10 | 2007 | Significant | Satisfactory |
| Coldwater Wastewater Treatment Dam Mercer County | 26 | 1991 | Significant | Satisfactory |
| Collins Park Wtp Sludge Lagoon A Lucas County | 12 | 1954 | Significant | Satisfactory |
| Collins Park Wtp Sludge Lagoon E Lucas County | 33 | 1987 | Significant | Satisfactory |
| Coppedge Lake Dam Trumbull County | 30 | — | Low | Satisfactory |
| Corning Lake Dam Lake County | 12 | — | Low | Satisfactory |
| Crum Lake Dam Fairfield County | 21 | 2006 | Low | Satisfactory |
| Cygnet Wwt Lagoon Wood County | 9 | 1994 | Significant | Satisfactory |
| Darty Stowe Lake Dam Noble County | 37 | 1987 | Significant | Satisfactory |
| Davlin Lynch LLC Dam Washington County | 23 | — | Significant | Satisfactory |
| Dawes Arboretum Lake Dam Licking County | 22 | 1954 | High | Satisfactory |
| Dayton Airport Detention Pond Dam Montgomery County | 13 | 1981 | Low | Satisfactory |
| Decker Lake Dam Licking County | 23 | 1993 | Significant | Satisfactory |
| Del-Co Upland Storage Reservoir No. 2 Delaware County | 43 | 1989 | High | Satisfactory |
| Delphos Reservoir Dam Van Wert County | 29 | 2007 | High | Satisfactory |
| Delta Upground Reservoir No. 2 Fulton County | 42 | 1984 | High | Satisfactory |
| Dogwood Lake Dam Fairfield County | 36 | 1960 | Low | Satisfactory |
| Dogwood Lake Dam Licking County | 38 | 1968 | Low | Satisfactory |
| Dunn Lake Dam Carroll County | 25 | 1963 | Low | Satisfactory |
| Eagles Lake Dam Hamilton County | 30 | 1988 | Significant | Satisfactory |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.