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 201–225 of 324
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Hunters Run Structure No. 2 Fairfield County | 56 | 1955 | Significant | Satisfactory |
| Hudson Springs Lake Dam Summit County | 18 | 1948 | Significant | Satisfactory |
| Howison Lake Dam Vinton County | 32 | 1975 | Low | Satisfactory |
| Howard Farm Dam Lucas County | 18 | 2018 | High | Satisfactory |
| Howard Farm Cell 2 Dam Lucas County | 14 | — | Significant | Satisfactory |
| Hoose Road Retention Dam Lake County | 22 | 1993 | High | Satisfactory |
| Holiday Lake Dam Huron County | 40 | 1965 | High | Satisfactory |
| Holiday Haven Lake Dam I Hocking County | 38 | 1961 | High | Satisfactory |
| Hidden Lake Dam Hocking County | 28 | 1957 | Significant | Satisfactory |
| Hickory Hills Lake Dam Highland County | 44 | 1971 | Significant | Satisfactory |
| Hetrick Lake Dam Muskingum County | 29 | — | Low | Satisfactory |
| Hap Cremean Lowhead Dam Franklin County | 14 | 1953 | Significant | Satisfactory |
| Hap Cremean Lagoon #2 Franklin County | 12 | 2010 | Significant | Satisfactory |
| Hap Cremean Lagoon #1 Franklin County | 14 | 2011 | Significant | Satisfactory |
| Hankins Lake Dam Morrow County | 23 | 1966 | Low | Satisfactory |
| Hammerhead Lake Dam Warren County | 14 | 1955 | Low | Satisfactory |
| Hamilton Small Diversion Butler County | 8 | 1920 | Low | Satisfactory |
| Hamilton County Anglers Lake Dam Clermont County | 34 | 1950 | Significant | Satisfactory |
| Gross Lake Dam Wayne County | 50 | 1977 | Significant | Satisfactory |
| Greenlawn Avenue Low Head Dam Franklin County | 11 | 1929 | Significant | Satisfactory |
| Green Lake Dam Logan County | 25 | 2002 | Low | Satisfactory |
| Goose Creek Dam Preble County | 29 | 1993 | Low | Satisfactory |
| Goodrich Lake Dam Warren County | 22 | 1994 | Significant | Satisfactory |
| Genon Energy South Pond Dam Trumbull County | 14 | — | Significant | Satisfactory |
| Genon Energy North Pond Dam Trumbull County | 20 | 1955 | Significant | Satisfactory |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.