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 301–325 of 360
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Crescent Lake Dam Henry County | 31 | 1900 | Significant | Not Available |
| Cox Lake Dam Wayne County | 18 | 1959 | Significant | Not Available |
| Coulterville Coal/Gateway Mine/Slurry Cell 2 Dam Randolph County | 35 | 1986 | Significant | Not Available |
| Conway Farm Subdivision Lake Dam Champaign County | 15 | 2004 | Significant | Not Available |
| Conservation Club 100 Lake Dam Marion County | 30 | 1953 | Significant | Not Available |
| Collins Station Cooling Lake Dam Grundy County | 27 | 1975 | Significant | 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 Power Sta. Supplemental Cooling Lake Dam Montgomery County | 21 | 2000 | Significant | Not Available |
| Coffeen Lake Dam Montgomery County | 70 | 1964 | Significant | Not Available |
| Clay City Side Channel Reservoir Dam Clay County | 11 | 1998 | Significant | Not Available |
| Clarified Water Pond Macoupin County | 15 | — | Significant | Not Available |
| Christopher Old Reservoir Dam Franklin County | 15 | 1900 | Significant | Not Available |
| Charter Oak North Lake Dam Peoria County | 39 | 1978 | Significant | Not Available |
| Charley Brown Park Lake Dam Clay County | 19 | 1936 | Significant | Not Available |
| Charlevoix Drive Dam Will County | 7 | 2008 | Significant | Not Available |
| Central Illinois Public Service Company Lake Dam Effingham County | 35 | 1930 | Significant | Not Available |
| Cedar Lake Dam Johnson County | 24 | 1973 | Significant | Not Available |
| Carthage Lake 1 Dam Hancock County | 38 | 1924 | Significant | Not Available |
| Carlinville Lake II Dam Macoupin County | 50 | 1981 | Significant | Not Available |
| Carbon Lake Dam Jackson County | 14 | — | Significant | Not Available |
| Caraness Lake Dam Hardin County | 37 | 1959 | Significant | Not Available |
| Cantrell Lake Dam White County | 27 | 1990 | Significant | Not Available |
| Campus Lake Dam Jackson County | 20 | 1869 | Significant | Not Available |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.