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 1376–1400 of 1,630
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Consol/Rend Lake Mine/Slurry Cell 2 Dam Jefferson County | 100 | 1998 | High | Not Available |
| Consol/Rend Lake Mine/Sediment Pond 009 Dam Jefferson County | 16 | 1999 | Low | Not Available |
| Consol/Burning Star 5/Slurry Impoundment Jackson County | 30 | 1989 | Low | Not Available |
| Conservation Club 100 Lake Dam Marion County | 30 | 1953 | Significant | Not Available |
| Condit Dam 1 Putnam County | 32 | 1977 | Low | Not Available |
| Concord Reservoir Dam Morgan County | 26 | 1910 | Low | Not Available |
| Comlara Park Pond Dam McLean County | 15 | 1996 | Low | Not Available |
| Columbus Dry Gulch Club Lake Dam Adams County | 39 | 1953 | Low | Not Available |
| Columbia Lakes South Lake Dam Monroe County | 25 | 1990 | High | Not Available |
| Columbia Farm Pond Dam Pike County | 31 | 1965 | Low | Not Available |
| Collins Station Cooling Lake Dam Grundy County | 27 | 1975 | Significant | Not Available |
| Colette Highlands Dam Cook County | 10 | — | Low | Not Available |
| Coles Lake Dam Greene County | 22 | 1923 | Low | Not Available |
| Coffeen Station Coal Yard Pond Dam Montgomery County | 20 | 1979 | Significant | Not Available |
| Coffeen Station Ash Pond 2 Dam Montgomery County | — | — | Significant | Not Available |
| Coffeen Station Ash Pond 1 Dam Montgomery County | — | — | Significant | Not Available |
| Coffeen Southwest Detention Pond Dam Montgomery County | 23 | 2010 | Low | Not Available |
| Coffeen Power Sta. Supplemental Cooling Lake Dam Montgomery County | 21 | 2000 | Significant | Not Available |
| Coffeen Lake Dam Montgomery County | 70 | 1964 | Significant | Not Available |
| Coffeen Gmf Recycle Pond Dam Montgomery County | 16 | — | Low | Not Available |
| Coffeen Gmf Gypsum Stack Dam Montgomery County | 108 | — | High | Not Available |
| Coffeen East Fork Shoal Creek Gate Dam Montgomery County | 12 | 2010 | Low | Not Available |
| Coens Pond Dam Richland County | 18 | 1974 | Low | Not Available |
| Cobblestone Lake Dam Peoria County | 64 | 1993 | Low | Not Available |
| Coal & Crane Creek Structure 5 Schuyler County | 47 | 1975 | High | Not Available |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.