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 851–875 of 1,630
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Lake Marie Dam Fulton County | 27 | 1965 | Low | Not Available |
| Lake Lynnhurst Dam Peoria County | 44 | 1940 | Low | Not Available |
| Lake Lou Yaeger Dam Montgomery County | 54 | 1966 | High | Not Available |
| Lake Louise Dam Cumberland County | 23 | 1944 | Low | Not Available |
| Lake Loudel Dam Monroe County | 28 | 1928 | Low | Not Available |
| Lake Lorraine Dam St. Clair County | 19 | 1900 | High | Not Available |
| Lake Long Bow Dam Peoria County | 12 | 1964 | High | Not Available |
| Lake Linden Dam Lake County | 10 | 1955 | Low | Not Available |
| Lake Linda Dam Hancock County | 12 | 1964 | Low | Not Available |
| Lake Le-Aqua-Na Dam Stephenson County | 44 | 1955 | Significant | Not Available |
| Lake Law Dam DuPage County | 20 | 1971 | Significant | Not Available |
| Lakeland Lake Dam Peoria County | 29 | 1949 | Low | Not Available |
| Lakeland Estates Dam Lake County | 9 | 1956 | Low | Not Available |
| Lake Lancelot Dam Peoria County | 54 | 1971 | High | Not Available |
| Lake Kevin Dam Fulton County | 20 | 1965 | Low | Not Available |
| Lake Kakusha Dam LaSalle County | 29 | 1981 | High | Not Available |
| Lake Ka-Ho 2 Dam Macoupin County | 36 | 1955 | Significant | Not Available |
| Lake Ka-Ho 1 Dam Macoupin County | 32 | 1955 | Low | Not Available |
| Lake Kadijah Dam DuPage County | 15 | 1924 | Significant | Not Available |
| Lake Joy Dam Clinton County | 23 | 1946 | Low | Not Available |
| Lake Jaycee Dam Jefferson County | 30 | 1905 | Significant | Not Available |
| Lake Jasper Dam Jasper County | 18 | 1945 | Low | Not Available |
| Lake Jacksonville Dam Morgan County | 54 | 1939 | Significant | Not Available |
| Lake Iroquois Iroquois County | 16 | 1969 | Low | Not Available |
| Lake Irene Dam Schuyler County | 33 | — | Low | Not Available |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.