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 1351–1375 of 1,377
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Archbold Upground Reservoir No. 1 Fulton County | 15 | 1957 | High | Poor |
| Apple Valley Lake Dam Knox County | 91 | 1971 | High | Poor |
| Appleseed Ridge Lake No. 1 Dam Logan County | 43 | 1968 | Significant | Fair |
| Appleseed Ridge Lake#2 Dam Logan County | 30 | 1968 | Low | Not Available |
| Appalachian Wildlife Area Pond Mb-165 Dam Morgan County | 31 | 1959 | Significant | Fair |
| Ansonia Sewage Lagoon I Darke County | 12 | 1970 | Significant | Fair |
| Anjecondy Lake Dam Knox County | 29 | 1950 | Significant | Satisfactory |
| Anglers Paradise Lake Dam Fairfield County | 35 | 1951 | Significant | Fair |
| Anderson Lakes Farm Dam No. 1 Warren County | 19 | — | Significant | Fair |
| Anderson Lake Dam Franklin County | 25 | 1961 | Significant | Poor |
| Amick Upground Reservoir Morrow County | 40 | 1968 | High | Poor |
| Amann Reservoir Upper Dam Morrow County | 22 | 1964 | Significant | Poor |
| Amann Reservoir Dam Morrow County | 32 | 1904 | Significant | Poor |
| Alum Creek Upground Reservoir No. 2 Delaware County | 36 | 2004 | High | Fair |
| Alum Creek Upground Reservoir Delaware County | 24 | 1997 | High | Fair |
| Alum Creek Dam Delaware County | 93 | 1974 | High | Not Available |
| Altiers Lake Dam Perry County | 19 | 1949 | High | Poor |
| Alliance Sludge Lagoons Stark County | 12 | 1993 | Significant | Fair |
| Allen No. 2 Dam (Racetrack Dam) Perry County | 35 | 1983 | Low | Fair |
| Allen No. 1 Dam Perry County | 59 | 1981 | High | Fair |
| Allegheny West Conference Cg Lake Dam Fairfield County | 33 | 1950 | Low | Satisfactory |
| Akita Lake Dam Hocking County | 29 | — | Low | Satisfactory |
| Ahrens Lake Dam Richland County | 34 | 1976 | Significant | Satisfactory |
| Adams Lake Dam Adams County | 34 | 1947 | High | Poor |
| Acton Lake Dam Butler County | 62 | 1956 | High | Satisfactory |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.