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 421
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Iroquois Lake Dam Cuyahoga County | 9 | 1960 | Significant | Fair |
| International Animal Preserve Pond Dam #10 Muskingum County | 68 | 1976 | High | Fair |
| Hutchison Lake Dam Ross County | 42 | 1961 | Significant | Fair |
| Hunters Run Structure R-61 Fairfield County | 26 | 1959 | Low | Fair |
| Hunters Run Structure No. R-65 Fairfield County | 28 | 1961 | Low | Fair |
| Hunters Run Structure No. R-13 Fairfield County | 30 | 1956 | Low | Fair |
| Hunters Run Structure No. 9 Fairfield County | 76 | 1959 | High | Fair |
| Hunters Run Structure No. 6 Fairfield County | 25 | 1961 | High | Fair |
| Hunters Run Structure No. 5 Fairfield County | 41 | 1961 | Significant | Fair |
| Hunters Run Structure No. 4 Fairfield County | 51 | 1960 | High | Fair |
| Hunters Run Structure No. 1 Fairfield County | 41 | 1955 | High | Fair |
| Huffman Dam Greene County | 73 | 1922 | High | Fair |
| Hoyek Lake Dam Ashland County | 26 | 1969 | Low | Fair |
| 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 |
| Hoover Dam Franklin County | 86 | 1956 | High | Fair |
| Homestead Neighbors Lake Dam Delaware County | 14 | 1949 | Significant | Fair |
| Holiday Camplands Lake Dam Ashtabula County | 10 | 1975 | High | Fair |
| Hintz Lake Dam Fairfield County | 26 | 1964 | Low | Fair |
| Hills Pond Dam Summit County | 15 | 1938 | Significant | Fair |
| Hills of Eden Lake Dam Harrison County | 16 | 1970 | Low | Fair |
| Hillsboro Reservoir No. 1 Dam Highland County | 42 | 1945 | Significant | Fair |
| Hidden Haven Lake Dam Guernsey County | 44 | 1961 | Significant | Fair |
| Hickory Lake Dam Holmes County | 39 | 1967 | Low | Fair |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.