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 251–275 of 564
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Malek Lake Dam Medina County | 17 | 1967 | Significant | Fair |
| Madison Lake Dam Madison County | 26 | 1946 | Significant | Poor |
| Lyons Wwt Lagoon Fulton County | 8 | 2003 | Significant | Satisfactory |
| Luehrs Lake Dam Ross County | 17 | — | Significant | Poor |
| Luczek Lake Dam Cuyahoga County | 41 | 1992 | Significant | Satisfactory |
| Luburgh Lake Dam No. 12 Muskingum County | 43 | 1963 | Significant | Fair |
| Luburgh Lake Dam No. 11 Muskingum County | 48 | 1963 | Significant | Satisfactory |
| Lower Woodsfield Reservoir Dam Monroe County | 47 | 1901 | Significant | Poor |
| Lower Wallace Lake Dam Columbiana County | 22 | — | Significant | Poor |
| Lower East Fork Equalization Basin Clermont County | 20 | 1992 | Significant | Satisfactory |
| Lower Carter Lake Dam Summit County | 30 | — | Significant | Satisfactory |
| Long Lake Dam Summit County | 12 | 1936 | Significant | Satisfactory |
| Little Mountain Dam "A" Lake County | 46 | — | Significant | Poor |
| Lindenwood Lake Dam Medina County | 30 | 1958 | Significant | Satisfactory |
| Lincoln Estates Lake Dam Medina County | 17 | — | Significant | Satisfactory |
| Lima Upground Reservoir Allen County | 25 | 1903 | Significant | Poor |
| Libertyvale Lake Dam Delaware County | 14 | — | Significant | Fair |
| Letha House Lake Dam Medina County | 24 | 2001 | Significant | Fair |
| Lenox Lakes Dam Ashtabula County | 28 | 1969 | Significant | Fair |
| Leeth Lake Dam Ross County | 42 | 1965 | Significant | Poor |
| Leatherwood Lake Dam Guernsey County | 12 | 1972 | Significant | Satisfactory |
| Laycock Farm Pond No. 1 Dam Adams County | 41 | 1945 | Significant | Poor |
| Laurel Lake Dam Morrow County | 20 | 1955 | Significant | Poor |
| Larue Wastewater Treatment Lagoon Marion County | 10 | 2001 | Significant | Satisfactory |
| Lamping Dam Monroe County | 27 | 1967 | Significant | Not Rated |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.