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 326–350 of 421
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| East Fork Buck Creek Structure Ii-B Champaign County | 26 | 1966 | Significant | Fair |
| Eastern Ag Research Station Dam Noble County | 32 | 1965 | Low | Fair |
| Eagles Lake Dam Williams County | 16 | 1966 | Low | Fair |
| Dow Lake Dam Athens County | 66 | 1959 | High | Fair |
| Dorothy Mine Pond Dam Jefferson County | 48 | 1950 | Significant | Fair |
| Donley Lake Dam Fairfield County | 19 | 1967 | Low | Fair |
| Dominick Lofino Park Lake Dam Greene County | 30 | 1990 | High | Fair |
| Dillon Wetland Mitigation Dam Muskingum County | 7 | 2000 | Low | Fair |
| Del-Co Upland Storage Reservoir No. 5 Delaware County | 45 | 2004 | High | Fair |
| Del-Co Upland Storage Reservoir No. 4 Delaware County | 53 | 1995 | High | Fair |
| Del-Co Upland Storage Reservoir No. 3 Delaware County | 51 | 1994 | High | Fair |
| Defiance Upground Reservoir Defiance County | 24 | 2007 | High | Fair |
| Deer Lake Estates Dam Geauga County | 20 | 1992 | Low | Fair |
| Deer Creek Reservoir Dam Stark County | 34 | 1954 | Significant | Fair |
| Crystal Lake Dam Summit County | 14 | 1936 | Significant | Fair |
| Cross Pond Dam Preble County | 31 | 1970 | Significant | Fair |
| Crossings of Springdale Lake No. 1 Dam Hamilton County | 29 | 1979 | Significant | Fair |
| Crooksville Reservoir No. 3 Dam Perry County | 36 | 1956 | Low | Fair |
| Collins Park Wtp Sludge Lagoons B & C Lucas County | 21 | 1987 | High | Fair |
| Colebrook Lake No. 1 Dam Portage County | 17 | 1966 | Low | Fair |
| Coldstream Country Club Dam No. 1 Hamilton County | 33 | 1971 | Low | Fair |
| Cloverdale Lake Dam Lake County | 13 | — | Significant | Fair |
| Clouse Lake Dam Perry County | 29 | 1946 | Significant | Fair |
| Cline Lake Dam Knox County | 19 | 1958 | Significant | Fair |
| Cline Lake Dam Noble County | 47 | 2003 | High | Fair |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.