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 |
|---|---|---|---|---|
| Mt. Victory Sewage Lagoon Hardin County | 13 | 1996 | Significant | Satisfactory |
| Muskingum River Middle Fly Ash Dam Washington County | 100 | 1968 | High | Satisfactory |
| Naco Lake Dam Jefferson County | 40 | 1958 | Significant | Satisfactory |
| Nesbitt Pond Dam Athens County | 29 | 1953 | High | Satisfactory |
| Nettle Lake Wwtp Lagoons Williams County | 11 | 1996 | Significant | Satisfactory |
| New London Reservoir Huron County | 39 | 1975 | High | Satisfactory |
| Newport Lake Dam Mahoning County | 28 | 1928 | Significant | Satisfactory |
| North Baltimore Ug Res No. 1 & 2 Wood County | 24 | 1969 | High | Satisfactory |
| North Park Cdf Facility Berm 2-3 Lake County | 33 | 2021 | Low | Satisfactory |
| Norwalk Lower Reservoir Huron County | 34 | 1896 | High | Satisfactory |
| Norwalk Upper Reservoir Huron County | 39 | 1896 | High | Satisfactory |
| Oeder Lake No. 3 Dam Warren County | 39 | 1953 | Significant | Satisfactory |
| Osage Lake Dam Medina County | 28 | 1955 | Significant | Satisfactory |
| O'Shaughnessy Delaware County | 79 | 1924 | High | Satisfactory |
| Paradise Lake Dam Columbiana County | 30 | 1962 | Significant | Satisfactory |
| Parker Pond Dam Belmont County | 32 | 2014 | Low | Satisfactory |
| Parsons Avenue Sludge Lagoons Franklin County | 28 | 1978 | Significant | Satisfactory |
| Peter Lake Dam Hamilton County | 50 | 1936 | Significant | Satisfactory |
| Pierce-Ruhland Pond Dam Ashtabula County | 34 | 1969 | Significant | Satisfactory |
| Pike Lake Dam Pike County | 31 | 1937 | High | Satisfactory |
| Pine Hill Lake Dam Warren County | 31 | — | High | Satisfactory |
| Pine Lake Dam Ross County | 34 | 1938 | Significant | Satisfactory |
| Pine Lake Dam Mahoning County | 16 | 1911 | High | Satisfactory |
| Plymouth Wastewater Lagoon Huron County | 10 | 1966 | Significant | Satisfactory |
| Pond Lick Lake Dam Scioto County | 21 | 1938 | High | Satisfactory |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.