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 301–325 of 397
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Del-Co Upland Storage Reservoir No. 4 Delaware County | 53 | 1995 | High | Fair |
| Del-Co Upland Storage Reservoir No. 3 Delaware County | 51 | 1994 | High | Fair |
| Del-Co Upland Storage Reservoir No. 2 Delaware County | 43 | 1989 | High | Satisfactory |
| Delaware Dam Delaware County | 92 | 1951 | High | Not Available |
| Defiance Upground Reservoir Defiance County | 24 | 2007 | High | Fair |
| Deer Lake Dam Muskingum County | 30 | 1957 | High | Poor |
| Deer Creek Dam Pickaway County | 93 | 1968 | High | Not Available |
| Dawes Arboretum Lake Dam Licking County | 22 | 1954 | High | Satisfactory |
| Dale Walborn Reservoir Dam Stark County | 37 | 1971 | High | Poor |
| Cowan Lake Dam Clinton County | 63 | 1947 | High | Poor |
| Comet Lake Dam Summit County | 26 | 1922 | High | Poor |
| Collins Park Wtp Sludge Lagoons B & C Lucas County | 21 | 1987 | High | Fair |
| Coalburg Lake Dam Trumbull County | 24 | 1916 | High | Poor |
| Clinton County Tributary No. 4 Dam Clinton County | 20 | 1976 | High | Satisfactory |
| Clinton County Tributary No. 1 Dam Clinton County | 15 | 1976 | High | Satisfactory |
| Cline Lake Dam Noble County | 47 | 2003 | High | Fair |
| Clermont Golf Limited Lake Dam Clermont County | 37 | 1997 | High | Fair |
| Clendening Dam Harrison County | 64 | 1936 | High | Not Available |
| Clear Fork Reservoir Dam Richland County | 44 | 1949 | High | Poor |
| Classicway Farm Lake Dam Warren County | 24 | 1965 | High | Poor |
| Clark Lake Dam Clark County | 23 | 1957 | High | Poor |
| Clarence J. Brown Dam Clark County | 98 | 1973 | High | Not Available |
| Cinnamon Lake Dam Ashland County | 45 | 1970 | High | Fair |
| Chippewa Creek Structure Viii-C Medina County | 25 | 1976 | High | Satisfactory |
| Chippewa Creek Structure Vii-C Wayne County | 27 | 1974 | High | Fair |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.