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 126–150 of 324
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Mount Gilead Lower Lake Dam Morrow County | 33 | 2018 | High | Satisfactory |
| Mohawk Lake Dam Seneca County | 18 | 1913 | Significant | Satisfactory |
| Moe Pond Dam Fairfield County | 19 | 1975 | Significant | Satisfactory |
| Minerva Park Lake Dam Franklin County | 19 | 1890 | Low | Satisfactory |
| Miami-Whitewater Forest Lake Dam Hamilton County | 35 | 1967 | Significant | Satisfactory |
| Metamora Upground Reservoir Fulton County | 11 | 1986 | Low | Satisfactory |
| Meadow Lake Dam Stark County | 19 | — | Significant | Satisfactory |
| Mcmillan Lake Dam Muskingum County | 27 | 1963 | Low | Satisfactory |
| Mcclure Wwt Lagoon Henry County | 9 | 1997 | Significant | Satisfactory |
| Mcclain Lake Dam Licking County | 40 | 2018 | Low | Satisfactory |
| Marysville Upground Reservoir Union County | 48 | 2009 | High | Satisfactory |
| Marge Schott Lake Dam Clermont County | 140 | 2000 | High | Satisfactory |
| Margaret Creek Structure No. 5 Athens County | 29 | 1970 | Significant | Satisfactory |
| Margaret Creek Structure No. 1 Athens County | 32 | 1972 | High | Satisfactory |
| Marathon Brine Pond Dam Stark County | 23 | 2008 | High | Satisfactory |
| Lyons Wwt Lagoon Fulton County | 8 | 2003 | Significant | Satisfactory |
| Luczek Lake Dam Cuyahoga County | 41 | 1992 | Significant | Satisfactory |
| Luburgh Lake Dam No. 11 Muskingum County | 48 | 1963 | Significant | Satisfactory |
| Luburgh Lake Dam Guernsey County | 51 | 1963 | High | Satisfactory |
| Loyal Oak Lake Dam Summit County | 31 | 1930 | High | Satisfactory |
| Lower East Fork Equalization Basin Clermont County | 20 | 1992 | Significant | Satisfactory |
| Lower Carter Lake Dam Summit County | 30 | — | Significant | Satisfactory |
| Lords Lake Dam Stark County | 22 | 1985 | High | Satisfactory |
| Long Lake Dam Summit County | 12 | 1936 | Significant | Satisfactory |
| Loecy Pond Dam Geauga County | 23 | — | High | Satisfactory |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.