Dams in Williamson, Illinois
30
Total Dams
6
High Hazard
9
Significant
67.0 yrs
Avg Age
| Dam Name | Hazard | Height | Built | Type | State |
|---|---|---|---|---|---|
| Williamson Energy/Pond Creek Mine/Refuse Disposal Facility Williamson | High Hazard | 88 ft | — | Rockfill | Illinois |
| Devil`S Kitchen Dam Williamson | High Hazard | 83 ft | 1959 | Gravity | Illinois |
| Lake of Egypt Dam Williamson | High Hazard | 55 ft | 1962 | Earth | Illinois |
| Springfield Coal/Orient 4/East Slurry Imp Williamson | High Hazard | 66 ft | 1985 | Earth | Illinois |
| Crab Orchard Dam Williamson | High Hazard | 57 ft | 1939 | Earth | Illinois |
| Little Grassy Dam Williamson | High Hazard | 88 ft | 1942 | Earth | Illinois |
| Marion Prison Lake Dam Williamson | Significant Hazard | 26 ft | 1991 | Earth | Illinois |
| Johnston City Lake Dam Williamson | Significant Hazard | 14 ft | 1921 | Earth | Illinois |
| Marion Reservoir Dam Williamson | Significant Hazard | 25 ft | 1971 | Earth | Illinois |
| Herrin Reservoir 2 Dam Williamson | Significant Hazard | 27 ft | 1926 | Earth | Illinois |
| Herrin Reservoir 1 Dam Williamson | Significant Hazard | 6 ft | 1915 | Earth | Illinois |
| Johnston City Sewage Lagoon Dam Williamson | Significant Hazard | 12 ft | 1963 | Earth | Illinois |
| Arrowhead Lake Dam Williamson | Significant Hazard | 16 ft | 1963 | Earth | Illinois |
| Freeman United/ /Fresh Water Lake Dam Williamson | Significant Hazard | 30 ft | 1964 | Earth | Illinois |
| Zeigler Coal Lake 5 Dam Williamson | Significant Hazard | 18 ft | 1963 | Earth | Illinois |
| Pleasant Valley Lake Dam Williamson | Low Hazard | 21 ft | 1958 | Earth | Illinois |
| Martel Lake Dam Williamson | Low Hazard | 20 ft | 1974 | Earth | Illinois |
| Marion Country Club Lake Dam Williamson | Low Hazard | 17 ft | 1914 | Earth | Illinois |
| A16 Pond Dam Williamson | Low Hazard | 13 ft | 1970 | Earth | Illinois |
| Madison Lake Dam Williamson | Low Hazard | 19 ft | 1919 | Earth | Illinois |
| Springfield Coal/Orient 4/Aux Slurry Pond Williamson | Low Hazard | 47 ft | 1986 | Earth | Illinois |
| Southern Il Power South Fly Ash Pond Dam Williamson | Low Hazard | 29 ft | 1989 | Earth | Illinois |
| Dam A-41 Williamson | Low Hazard | 24 ft | 1965 | Earth | Illinois |
| Knights of Pythias Lake Dam Williamson | Low Hazard | 14 ft | 1928 | Earth | Illinois |
| Belford Lake Dam Williamson | Low Hazard | 26 ft | 1966 | Earth | Illinois |
| Durst Lake Dam Williamson | Low Hazard | 13 ft | 1942 | Earth | Illinois |
| Bleyar Lake Dam Williamson | Low Hazard | 20 ft | 1974 | Earth | Illinois |
| Teal Lake Dam Williamson | Low Hazard | 12 ft | 1966 | Earth | Illinois |
| Visitor Center Dam Williamson | Low Hazard | 21 ft | 2009 | Earth | Illinois |
| Southern Il Power Fly Ash Disp Pond B-3 Dam Williamson | Low Hazard | 36 ft | 1986 | Earth | Illinois |