6Total Dams
2High Hazard
1Significant
Dam Safety in Cass County, Illinois
Cass County has 6 dams tracked in the National Inventory of Dams. Of these, 2 are classified as high hazard — meaning failure would probably cause loss of human life. Another 1 carry a significant hazard classification.
The average dam in Cass County is 49 years old. The most common purpose is recreation. The tallest dam is Prairie Lake Dam at 68 ft.
Explore more: Oldest dams in Illinois · Tallest dams · High risk dams · Largest reservoirs
| Dam | Hazard | Condition | Height (ft) | Purpose | Year |
|---|---|---|---|---|---|
| Prairie Lake Dam | High | Not assessed | 68 | Recreation | 1999 |
| Drake Lake Dam | High | Not assessed | 44 | Fish and Wildlife Pond | 2003 |
| Virginia Lake Dam | Significant | Not assessed | 42 | Recreation | 1933 |
| Gridley Dam | Low | Not assessed | 51 | Recreation | 1998 |
| Longs Lake Dam | Low | Not assessed | 28 | Recreation | 1960 |
| Finger Lake Dam | Low | Not assessed | 27 | Fire Protection, Stock, Or Small Fish Pond | 1968 |