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 401–425 of 1,008
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Jennifer Creek Reservoir Dam Hancock County | 62 | 1971 | Low | Not Available |
| Johnson Lake Dam Wayne County | 20 | 2002 | Low | Not Available |
| Johnson Pond Dam 1 Montgomery County | 30 | 1966 | Low | Not Available |
| Johnson Sauk Trail Lake Dam Henry County | 38 | 1956 | Low | Not Available |
| John Surgeon Pond Dam Jersey County | 25 | 1970 | Low | Not Available |
| Joliet West Side Wastewater Treatment Plant Dam Will County | 25 | — | Low | Not Available |
| Jones Pond Dam Jersey County | 25 | 1975 | Low | Not Available |
| Joyces Lake Dam Madison County | 24 | 1969 | Low | Not Available |
| Jug Lake Dam Adams County | 31 | 1951 | Low | Not Available |
| Jurgens Brothers Lake Dam Morgan County | 28 | 1968 | Low | Not Available |
| Justamir Association Lake Dam St. Clair County | 11 | 1931 | Low | Not Available |
| Kaibab Partners Dam Jackson County | 26 | — | Low | Not Available |
| Kankakee Kankakee County | 15 | 1915 | Low | Satisfactory |
| Kaskaskia Island Wildlife Area Lake Dam St. Clair County | 24 | 1990 | Low | Not Available |
| Kays Lake Dam Pulaski County | 16 | 1954 | Low | Not Available |
| Keene Lake Dam Cook County | 8 | 1944 | Low | Not Available |
| Keeven Lake Dam Madison County | 30 | 1970 | Low | Not Available |
| Kellart Lake Dam Iroquois County | 10 | 1965 | Low | Not Available |
| Kempton Farm Dam Livingston County | 18 | 2002 | Low | Not Available |
| Kennel Lake Dam Tazewell County | 27 | 1948 | Low | Not Available |
| Kepler Lake Dam Stark County | 25 | 1965 | Low | Not Available |
| Keystone Anglers Club Lake Dam Fulton County | 47 | 1941 | Low | Not Available |
| Kiel Pond Dam Jersey County | 29 | 1971 | Low | Not Available |
| Kilton Lake Dam Montgomery County | 19 | 1960 | Low | Not Available |
| Kilton Pond Dam 2 Montgomery County | 28 | 1963 | Low | Not Available |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.