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 301–325 of 501
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Hunters Run Structure No. R-21 Fairfield County | 28 | 1961 | Low | Poor |
| Hunters Run Structure No. 3 Fairfield County | 27 | 1960 | High | Poor |
| Huber Lake Dam Stark County | 23 | 1966 | Significant | Poor |
| Houston Upground Reservoir Clinton County | 13 | 1935 | Significant | Poor |
| Horace Troop Pond Dam Delaware County | 21 | 1956 | High | Poor |
| Hollenbeck Lake Dam Cuyahoga County | 22 | 1953 | High | Poor |
| Holland Lake Dam Logan County | 34 | — | Significant | Poor |
| Holiday Haven Lake Dam Ii Hocking County | 27 | 1965 | Significant | Poor |
| Hoar Pond Dam Licking County | 26 | 1953 | Low | Poor |
| Hinckley Lake Dam Medina County | 40 | 1928 | High | Poor |
| Hillsboro Upground Reservoir Highland County | 48 | 1991 | Significant | Poor |
| Highlandtown Lake Dam Columbiana County | 44 | 1966 | High | Poor |
| High Lands Golf Club Dam Licking County | 31 | 1988 | Low | Poor |
| Hidden Valley Acres Dam Holmes County | 30 | 1958 | Significant | Poor |
| Hidden Lakes Upper Dam Meigs County | 26 | — | Significant | Poor |
| Hidden Lakes Dam Geauga County | 22 | 1954 | Significant | Poor |
| Hidden Lake Dam Miami County | 21 | 1977 | Significant | Poor |
| Hidden Hill Lake Dam Clermont County | 32 | 1943 | Low | Poor |
| Hickory Nut Golf Course Lake Dam Lorain County | 17 | 1963 | Significant | Poor |
| Hickory Lake Dam Defiance County | 26 | 1964 | Significant | Poor |
| Hickory Hills Park Lake Dam Portage County | 12 | 1958 | High | Poor |
| Harvey'S Lake Dam Geauga County | 19 | 1952 | Significant | Poor |
| Harrison Lake Dam Fulton County | 35 | 1941 | Significant | Poor |
| Hargus Lake Dam Pickaway County | 66 | 1956 | High | Poor |
| Harding Area Council Bsa Dam Morrow County | 31 | 1973 | Low | Poor |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.