22Total Dams
4High Hazard
9Significant
Dam Safety in Monroe County, Illinois
Monroe County has 22 dams tracked in the National Inventory of Dams. Of these, 4 are classified as high hazard — meaning failure would probably cause loss of human life. Another 9 carry a significant hazard classification.
The average dam in Monroe County is 59 years old. The most common purpose is recreation. The tallest dam is Village of Valmeyer Dam at 68 ft.
Explore more: Oldest dams in Illinois · Tallest dams · High risk dams · Largest reservoirs
| Dam | Hazard | Condition | Height (ft) | Purpose | Year |
|---|---|---|---|---|---|
| Hill Lake Dam | High | Not assessed | 30 | Recreation | 1968 |
| Columbia Lakes South Lake Dam | High | Not assessed | 25 | Recreation | 1990 |
| Stonegate Lake Dam | High | Not assessed | 23 | Flood Risk Reduction | 1960 |
| Lake of the Woods 2 Dam | High | Not assessed | 0 | Recreation | |
| Waterloo New Reservoir Dam | Significant | Not assessed | 42 | Water Supply | 1961 |
| West Lake Estates Dam | Significant | Not assessed | 33 | Recreation | 1986 |
| Waterloo Reservoir 1 Dam | Significant | Not assessed | 31 | Water Supply | 1924 |
| Westview Acres Lake Dam | Significant | Not assessed | 29 | Recreation | 1999 |
| Waterloo Sportsman Club Lake 1 Dam | Significant | Not assessed | 29 | Recreation | 1948 |
| Keeven Lake Dam | Significant | Not assessed | 25 | Irrigation | 1998 |
| Finn's Lake Dam | Significant | Not assessed | 23 | Irrigation | |
| Ylsa Lake Dam | Significant | Not assessed | 20 | Recreation | 1995 |
| Waterloo Reservoir 2 Dam | Significant | Not assessed | 19 | Water Supply | 1950 |
| Village of Valmeyer Dam | Low | Not assessed | 68 | Flood Risk Reduction | 1995 |
| Waterloo Sportsman Club Lake 2 Dam | Low | Not assessed | 32 | Recreation | 1950 |
| Lake Loudel Dam | Low | Not assessed | 28 | Recreation | 1928 |
| Fisher Lake Dam | Low | Not assessed | 28 | Recreation | 1952 |
| Lake Emmett Dam | Low | Not assessed | 23 | Recreation | 1949 |
| Lake of the Woods 1 Dam | Low | Not assessed | 21 | Recreation | 1974 |
| Lake Mildred Dam | Low | Not assessed | 19 | Recreation | 1950 |
| Willow Lake Estates Dam | Low | Not assessed | 17 | Recreation | 1996 |
| Lake Ronnie Dam | Low | Not assessed | 17 | Recreation | 1952 |