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 776–800 of 1,008
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Eilers Lake Dam Adams County | 25 | 1965 | Low | Not Available |
| Eddy Lake Dam McHenry County | 14 | 1965 | Low | Not Available |
| Eaton Lake Dam 1 Jasper County | 28 | 1965 | Low | Not Available |
| East Lake Estates 2 Dam Brown County | 55 | 2001 | Low | Not Available |
| Eagle Ridge West Pond Dam Jo Daviess County | 66 | 1997 | Low | Not Available |
| Eagle Ridge East Pond Dam Jo Daviess County | 25 | 1996 | Low | Not Available |
| Eagle Creek East Dam McLean County | 11 | 1998 | Low | Not Available |
| Eagle Creek Dam McLean County | 11 | 1994 | Low | Not Available |
| Dynegy /Wood River West Ash Disposal Pond Dam Madison County | 32 | 1995 | Low | Not Available |
| Dynegy/Vermilion Station/Fly Ash Disposal Pond Dam Vermilion County | 40 | 1991 | Low | Not Available |
| Durst Lake Dam Williamson County | 13 | 1942 | Low | Not Available |
| Dupage Airport Upper Dam DuPage County | 15 | 1993 | Low | Not Available |
| Dupage Airport Lower Dam DuPage County | 15 | 1992 | Low | Not Available |
| Duck Valley Dam Kane County | 40 | 1940 | Low | Not Available |
| Duck Creek Recycle Pond Dam Fulton County | 41 | — | Low | Not Available |
| Duck Creek Gypsum Stack Dam Fulton County | 45 | — | Low | Not Available |
| Duck Creek Ash Pond 2 Dam Fulton County | 50 | 1984 | Low | Not Available |
| Drumm Farm Weir Dam Will County | 7 | — | Low | Not Available |
| Doyle Lake Dam Will County | 14 | 1973 | Low | Not Available |
| Downing Pond Dam Madison County | 32 | 1967 | Low | Not Available |
| Donoho Pond Dam 1 Jefferson County | 27 | 1979 | Low | Not Available |
| Donnelly Pond Dam Rock Island County | 28 | 1965 | Low | Not Available |
| Don Johnson Pond Dam Peoria County | 29 | 1974 | Low | Not Available |
| Dixon Pond Dam Brown County | 25 | 1966 | Low | Not Available |
| Dixon Lee County | 17 | 1924 | Low | Satisfactory |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.