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 101–125 of 397
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Delta Upground Reservoir No. 2 Fulton County | 42 | 1984 | High | Satisfactory |
| Dillon Dam Muskingum County | 118 | 1960 | High | Not Available |
| Dominick Lofino Park Lake Dam Greene County | 30 | 1990 | High | Fair |
| Dover Dam Tuscarawas County | 83 | 1938 | High | Not Available |
| Dow Lake Dam Athens County | 66 | 1959 | High | Fair |
| East Branch Reservoir Dam Geauga County | 34 | 1939 | High | Poor |
| East Reservoir Dam Summit County | 25 | 1840 | High | Satisfactory |
| Echo Lake Dam Miami County | 14 | 1876 | High | Poor |
| Englewood Dam Montgomery County | 121 | 1922 | High | Fair |
| Equinus (Legendary Run) Lake Dam Clermont County | 45 | 2001 | High | Satisfactory |
| Eramet Waste Retention Dam Washington County | 118 | 1982 | High | Satisfactory |
| Essington Lake Dam Perry County | 20 | 1945 | High | Fair |
| Evans Lake Dam Mahoning County | 49 | 1948 | High | Fair |
| Fairfield Detention "A" Dam Butler County | 24 | 1997 | High | Satisfactory |
| Fairfield Detention "C" Dam Butler County | 31 | 1998 | High | Satisfactory |
| Fayetteville High School Lake Dam Brown County | 15 | — | High | Poor |
| Ferguson Upground Reservoir Allen County | 49 | 1959 | High | Fair |
| Findlay Upground Reservoir No. 1 Hancock County | 28 | 1950 | High | Fair |
| Findlay Upground Reservoir No. 2 Hancock County | 32 | 1971 | High | Fair |
| Findley Lake Dam Lorain County | 33 | 1956 | High | Poor |
| Forest Hill Park Dam No. 2 Cuyahoga County | 37 | 1963 | High | Poor |
| Forked Run Lake Dam Meigs County | 56 | 1952 | High | Poor |
| Fostoria Upground Reservoir No. 5 Hancock County | 36 | 1958 | High | Fair |
| Four Eagles Lake Dam Preble County | 45 | 1959 | High | Satisfactory |
| Franz Pond Dam Miami County | 21 | 1876 | High | Poor |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.