20Total Dams
1High Hazard
6Significant
Dam Safety in Clark County, Illinois
Clark County has 20 dams tracked in the National Inventory of Dams. Of these, 1 are classified as high hazard — meaning failure would probably cause loss of human life. Another 6 carry a significant hazard classification.
The average dam in Clark County is 64 years old. The most common purpose is recreation. The tallest dam is Mill Creek Structure 1 Dam at 81 ft.
Explore more: Oldest dams in Illinois · Tallest dams · High risk dams · Largest reservoirs
| Dam | Hazard | Condition | Height (ft) | Purpose | Year |
|---|---|---|---|---|---|
| Lincoln Trail State Park Lake Dam | High | Not assessed | 52 | Recreation | 1956 |
| Mill Creek Structure 1 Dam | Significant | Not assessed | 81 | Flood Risk Reduction | 1980 |
| Marshall Golf Course Lake Dam | Significant | Not assessed | 39 | Recreation | 1940 |
| Mill Creek Structure 3 Dam | Significant | Not assessed | 38 | Flood Risk Reduction | 1976 |
| Twenty One Guns Campground Lake Dam | Significant | Not assessed | 30 | Recreation | 1957 |
| Sherwood Forest Lake Dam | Significant | Not assessed | 21 | Recreation | 1954 |
| Martinsville Pond Dam | Significant | Not assessed | 6 | Fish and Wildlife Pond | 1910 |
| Mill Creek Structure 9 Dam | Low | Not assessed | 46 | Flood Risk Reduction | 1986 |
| Mill Creek Structure 7 Dam | Low | Not assessed | 42 | Flood Risk Reduction | 1976 |
| Lashbrook Pond Dam | Low | Not assessed | 40 | Recreation | 1967 |
| Mill Creek Structure 8 Dam | Low | Not assessed | 40 | Flood Risk Reduction | 1987 |
| Mill Creek Strcture 2 Dam | Low | Not assessed | 38 | Flood Risk Reduction | 1973 |
| Mill Creek Ws Str 4 | Low | Not assessed | 35 | Flood Risk Reduction | 1976 |
| Mill Creek Structure 6 Dam | Low | Not assessed | 34 | Flood Risk Reduction | 1976 |
| Bass Lake Dam | Low | Not assessed | 33 | Recreation | 1952 |
| Sweet Farms Lake Dam | Low | Not assessed | 30 | Recreation | 1960 |
| Round Grove Sportsman Lake Dam | Low | Not assessed | 28 | Recreation | 1947 |
| Newmans Lake Dam | Low | Not assessed | 24 | Recreation | 1954 |
| Martin Tarbel Lake Dam | Low | Not assessed | 23 | Recreation | 1954 |
| Craig Lake Dam | Low | Not assessed | 22 | Recreation | 1956 |