18Total Dams
7High Hazard
4Significant
Dam Safety in LaSalle County, Illinois
LaSalle County has 18 dams tracked in the National Inventory of Dams. Of these, 7 are classified as high hazard — meaning failure would probably cause loss of human life. Another 4 carry a significant hazard classification.
The average dam in LaSalle County is 66 years old. The most common purpose is recreation. The tallest dam is Bazzoni Lake Dam at 65 ft.
Explore more: Oldest dams in Illinois · Tallest dams · High risk dams · Largest reservoirs
| Dam | Hazard | Condition | Height (ft) | Purpose | Year |
|---|---|---|---|---|---|
| Lasalle Co. Nuclear Station Cooling Lake Dam | High | Not assessed | 43 | Other | 1977 |
| Holiday Lake Dam | High | Not assessed | 41 | Recreation | 1965 |
| Lake Kakusha Dam | High | Not assessed | 29 | Flood Risk Reduction | 1981 |
| Northern White Sands Dam | High | Not assessed | 28 | Other | |
| Northeast Recreation Area Dam | High | Not assessed | 27 | Flood Risk Reduction | 1988 |
| Lake Mendota Dam | High | Not assessed | 17 | Recreation | 1890 |
| Dayton Estates Dam | High | Not assessed | 15 | Recreation | 1965 |
| Marseilles Lock and Dam | Significant | Not assessed | 58 | Navigation | 1933 |
| Deer Park Lake Dam | Significant | Not assessed | 55 | Recreation | 1910 |
| Starved Rock Lock and Dam | Significant | Not assessed | 35 | Navigation | 1933 |
| Sabic Basins Dam | Significant | Not assessed | 10 | Other | 1960 |
| Bazzoni Lake Dam | Low | Not assessed | 65 | Recreation | 1989 |
| Unimin Tailings Pond O Dam | Low | Not assessed | 56 | Tailings | 2010 |
| Dayton | Low | Satisfactory | 26 | Navigation | 1925 |
| Alleman Lake Dam | Low | Not assessed | 26 | Recreation | 1975 |
| Saddlewood Estates Dam | Low | Not assessed | 20 | Recreation | 1991 |
| Mendota Agri-products Storage Lagoon 5 Dam | Low | Not assessed | 16 | Other | 2012 |
| Marseilles Power Canal Dam | Low | Not assessed | 15 | Hydroelectric | 1911 |