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 851–875 of 1,377
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Huber Lake Dam Stark County | 23 | 1966 | Significant | Poor |
| Hoyek Lake Dam Ashland County | 26 | 1969 | Low | Fair |
| Howison Lake Dam Vinton County | 32 | 1975 | Low | Satisfactory |
| Howard Farm Dam Lucas County | 18 | 2018 | High | Satisfactory |
| Howard Farm Cell 2 Dam Lucas County | 14 | — | Significant | Satisfactory |
| Houston Upground Reservoir Clinton County | 13 | 1935 | Significant | Poor |
| Hosterman Lake Dam Clark County | 28 | 1938 | Low | Fair |
| Horse Run No. 3 Dam Mb-40 Morgan County | 42 | 1961 | Significant | Fair |
| Horse Run No. 1 Dam Mb-42 Morgan County | 60 | 1952 | Significant | Fair |
| Horace Troop Pond Dam Delaware County | 21 | 1956 | High | Poor |
| Hoover Dam Franklin County | 86 | 1956 | High | Fair |
| Hoose Road Retention Dam Lake County | 22 | 1993 | High | Satisfactory |
| Homestead Neighbors Lake Dam Delaware County | 14 | 1949 | Significant | Fair |
| Hollenbeck Lake Dam Cuyahoga County | 22 | 1953 | High | Poor |
| Holland Lake Dam Logan County | 34 | — | Significant | Poor |
| Holiday Lake Dam Huron County | 40 | 1965 | High | Satisfactory |
| Holiday Haven Lake Dam Ii Hocking County | 27 | 1965 | Significant | Poor |
| Holiday Haven Lake Dam I Hocking County | 38 | 1961 | High | Satisfactory |
| Holiday Camplands Lake Dam Ashtabula County | 10 | 1975 | High | Fair |
| Hoar Pond Dam Licking County | 26 | 1953 | Low | Poor |
| Hintz Lake Dam Fairfield County | 26 | 1964 | Low | Fair |
| Hinckley Lake Dam Medina County | 40 | 1928 | High | Poor |
| Hills Pond Dam Summit County | 15 | 1938 | Significant | Fair |
| Hills of Eden Lake Dam Harrison County | 16 | 1970 | Low | Fair |
| Hillsboro Upground Reservoir Highland County | 48 | 1991 | Significant | Poor |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.