13Total Dams
0High Hazard
4Significant
Dam Safety in Mercer County, Illinois
Mercer County has 13 dams tracked in the National Inventory of Dams. Another 4 carry a significant hazard classification.
The average dam in Mercer County is 63 years old. The most common purpose is recreation. The tallest dam is Fyre Lake Dam at 53 ft.
Explore more: Oldest dams in Illinois · Tallest dams · High risk dams · Largest reservoirs
| Dam | Hazard | Condition | Height (ft) | Purpose | Year |
|---|---|---|---|---|---|
| Fyre Lake Dam | Significant | Not assessed | 53 | Recreation | 1972 |
| Karl Lake Dam | Significant | Not assessed | 50 | Recreation | 1974 |
| Morrison Lake Dam | Significant | Not assessed | 33 | Recreation | 1965 |
| Matherville Lagoons Dam | Significant | Not assessed | 9 | Other | |
| Swearington Lake Dam | Low | Not assessed | 39 | Other | 1973 |
| Mccaw Pond Dam | Low | Not assessed | 38 | Flood Risk Reduction | 1952 |
| Lake Matherville Dam | Low | Not assessed | 37 | Recreation | 1926 |
| Irwin Lake Dam | Low | Not assessed | 34 | Recreation | 1965 |
| Renee Lake Dam | Low | Not assessed | 32 | Recreation | 1973 |
| Dellitt Lake Dam | Low | Not assessed | 31 | Recreation | 1975 |
| Fools Lake Dam | Low | Not assessed | 28 | Recreation | 1960 |
| Weinmister Pond Dam | Low | Not assessed | 28 | Fish and Wildlife Pond | 1978 |
| Lake Nelson Dam | Low | Not assessed | 14 | Other | 1937 |