Illinois Dams
1,630 dams tracked by the National Inventory of Dams
Total Dams
1,630
High Hazard
251
15.4%
Poor / Unsatisfactory
6
Average Age
61 yrs
Hazard Classification
High251 (15.4%)
Significant360 (22.1%)
Low1,008 (61.8%)
Condition Assessment
Satisfactory8 (0.5%)
Fair6 (0.4%)
Poor / Unsatisfactory6 (0.4%)
Not Rated1,610 (98.8%)
Federal
48
State
68
Local
286
Private
1,153
Tallest Dams
- Refuse Disposal Area175 ft
- Shelbyville Dam138 ft
- Duck Creek Station Dams123 ft
- Devil`s Kitchen Dam121 ft
- Macoupin Energy Refuse Disposal Area 6117 ft
High Hazard Dams
Poor Condition Dams
- Whoopie CatPoor
- Arsenal Power Poor
- Dam A-41Poor
- Lake Chautauqua Upper DamPoor
- Lake Chautauqua Lower DamPoor
All Dams in Illinois
Showing 1351–1375 of 1,630
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Crab Orchard Dam Williamson County | 65 | 1939 | High | Fair |
| Crabill Pond Dam Coles County | 35 | 1974 | Low | Not Available |
| Cox Lake Dam Wayne County | 18 | 1959 | Significant | Not Available |
| Cowen Pond Dam Peoria County | 40 | 1970 | Low | Not Available |
| Courtoise Lane Dam Macoupin County | 34 | — | Low | Not Available |
| Countryside Landfill Dam Lake County | 13 | 1997 | Low | Not Available |
| Countryside Lake Dam Lake County | 9 | 1928 | High | Not Available |
| Country Lake Dam Menard County | 39 | 1975 | Low | Not Available |
| Country Commons Park Basin Dam DuPage County | 8 | 2004 | High | Not Available |
| Coulterville Coal/Gateway Mine/Slurry Cell 4 Dam Randolph County | 34 | 2006 | Low | Not Available |
| Coulterville Coal/Gateway Mine/Slurry Cell 3 Dam Randolph County | 41 | 1990 | High | Not Available |
| Coulterville Coal/Gateway Mine/Slurry Cell 2 Dam Randolph County | 35 | 1986 | Significant | Not Available |
| Coulterville Coal/Gateway Mine/Slurry Cell 1 Dam Randolph County | 33 | 1977 | Low | Not Available |
| Coulterville City Reservoir Dam Randolph County | 15 | 1939 | Low | Not Available |
| Cortland Water Reclamation Facility Cell 4 Dam DeKalb County | 17 | 2008 | High | Not Available |
| Cortland Water Reclamation Facility Cell 3 Dam DeKalb County | 17 | 2008 | High | Not Available |
| Cortland Water Reclamation Facility Cell 2 Dam DeKalb County | 17 | 2008 | Low | Not Available |
| Cortland Water Reclamation Facility Cell 1 Dam DeKalb County | 17 | 2008 | Low | Not Available |
| Corner Stone Lakes Dam DuPage County | 7 | 2000 | Low | Not Available |
| Cornell Avenue Dam Cook County | 9 | 1977 | High | Not Available |
| Coopers Farm Sediment Storage Dam Lake County | 13 | — | High | Not Available |
| Coolidge Creek Dam Winnebago County | 22 | 1998 | Low | Not Available |
| Conway Farm Subdivision Lake Dam Champaign County | 15 | 2004 | Significant | Not Available |
| Consol/Rend Lake/Sed Pond 008 Dam Jefferson County | 18 | 1995 | Low | Not Available |
| Consol/Rend Lake Mine/Slurry Impoundment 1 Jefferson County | 75 | 1993 | High | Not Available |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.