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 926–950 of 1,377
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Orrville Farmer'S & Sportsmen'S League Dam Wayne County | 16 | — | Low | Poor |
| Osage Lake Dam Medina County | 28 | 1955 | Significant | Satisfactory |
| O'Shaughnessy Delaware County | 79 | 1924 | High | Satisfactory |
| Osu Golf Course Lake Dam Franklin County | 17 | 1936 | Significant | Fair |
| Ottawa Upground Reservoir Putnam County | 22 | 1972 | High | Fair |
| Owens Corning Science & Tech Lake Dam Licking County | 24 | 1958 | Significant | Fair |
| Owensville Lake Dam Clermont County | 24 | 1951 | Significant | Poor |
| Oxbow Lake Dam Defiance County | 18 | 1953 | Low | Poor |
| Paint Creek Dam - Greenfield Levee Ross County | 43 | 1973 | High | Not Available |
| Paint Creek Dam - Little Pond Dam Highland County | 30 | 1973 | Low | Not Available |
| Palmetto Lake Dam Ashtabula County | 12 | — | Significant | Poor |
| Pancake Lake Dam Summit County | 20 | 1965 | Low | Fair |
| P and J Lake Dam Carroll County | 21 | 1965 | Significant | Poor |
| Panorama Farms Lake Dam Portage County | 25 | 1968 | Undetermined | Not Rated |
| Paradise Lake Dam Columbiana County | 30 | 1962 | Significant | Satisfactory |
| Paradise Lakes Campground Lake Dam Trumbull County | 22 | 1958 | Low | Poor |
| Paradise Lakes - North Lake Dam Preble County | 32 | 1946 | High | Fair |
| Paradise Lakes - South Lake Dam Preble County | 40 | 1946 | High | Poor |
| Parec Lake Dam Pike County | 14 | 1991 | Undetermined | Not Rated |
| Parker Lakes Lower Dam Clark County | 19 | 2004 | Low | Poor |
| Parker Lakes Upper Dam Clark County | 15 | 1994 | Significant | Poor |
| Parker Pond Dam Belmont County | 32 | 2014 | Low | Satisfactory |
| Parsons Avenue Sludge Lagoons Franklin County | 28 | 1978 | Significant | Satisfactory |
| Paulding Upground Reservoir Paulding County | 24 | 1966 | High | Fair |
| Paulmeadows Lake Dam Hamilton County | 32 | 1965 | Low | Fair |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.