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 776–800 of 1,377
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Kittredge Arboretum Lake Dam Geauga County | 26 | 1965 | Significant | Poor |
| Kiser Lake Dam Champaign County | 25 | 1939 | High | Fair |
| Kirila Pond Dam Trumbull County | 46 | 1950 | Significant | Poor |
| Kirby Lake Dam Summit County | 20 | 1929 | Low | Satisfactory |
| Kinskey Lake Dam Scioto County | 35 | 1969 | High | Satisfactory |
| King'S Lake Dam Mahoning County | 14 | 1957 | Low | Poor |
| Killen Station Ash Disposal Dike Adams County | 84 | 1982 | High | Fair |
| Killdeer Wildlife Pond 27 Southwest Cell Wyandot County | 9 | — | Significant | Poor |
| Kettenring Hills Lake Dam Defiance County | 30 | 1976 | Low | Fair |
| Kerruish Stormwater Control Facility Dam Cuyahoga County | 40 | 1954 | High | Satisfactory |
| Kenton Dam Gallia County | 30 | 1967 | Low | Not Rated |
| Kenridge Lake Dam Hamilton County | 20 | — | Significant | Satisfactory |
| Kemper Meadow Dam Hamilton County | 36 | 1997 | Undetermined | Not Rated |
| Karr Lake Dam Meigs County | 33 | 1974 | Low | Fair |
| Julian Griggs Dam Franklin County | 52 | 1905 | High | Fair |
| Johnson Lake Dam Guernsey County | 12 | 1976 | Low | Fair |
| John R. Doutt Upground Reservoir Delaware County | 46 | 2014 | High | Fair |
| Jm Stuart Station Ash Pond No. 7 Adams County | 39 | — | Significant | Poor |
| Jm Stuart Station Ash Pond No. 6 Adams County | 31 | — | Significant | Poor |
| Jm Stuart Station Ash Pond No. 5 Adams County | 41 | — | Significant | Poor |
| Jisco Lake Dam Jackson County | 56 | 1952 | High | Poor |
| Jewett Wwt Lagoon Harrison County | 12 | 1999 | Significant | Satisfactory |
| Jefferson Sportsman'S Lake No. 1 Dam Jefferson County | 39 | 1966 | Low | Satisfactory |
| Jefferson Lake Dam Jefferson County | 26 | 1934 | High | Satisfactory |
| Jeffco Pond Dam No. 21 Harrison County | 41 | — | Significant | Poor |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.