Dams in Union County, Illinois
8Total Dams
3High Hazard
1Significant
| Dam | Hazard | Condition | Height (ft) | Purpose | Year |
|---|---|---|---|---|---|
| Alto Pass Reservoir Dam | High | Not Available | 45 | Recreation | 1964 |
| Dongola Lake Dam | High | Not Available | 34 | Recreation | 1970 |
| Choate Lake Dam | High | Not Available | 25 | Recreation | 1907 |
| Myers Ranch Farms Pond Dam | Significant | Not Available | 38 | Recreation | 1997 |
| Rockman Pond Dam 1 | Low | Not Available | 34 | Fish and Wildlife Pond | 1973 |
| Flamms Lake Dam | Low | Not Available | 29 | Recreation | |
| Hinz Pond Dam | Low | Not Available | 26 | Recreation | 1966 |
| Dennys Pond Dam | Low | Not Available | 25 | Fire Protection, Stock, Or Small Fish Pond | 1966 |