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 1576–1600 of 1,630
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Baker Hill Detention Basin Dam DuPage County | 23 | 1999 | High | Not Available |
| Bails Timberline Lake Dam Fayette County | 33 | 1966 | Low | Not Available |
| Autumn Rose Lake Dam Johnson County | 32 | 1998 | Significant | Not Available |
| Austiff Pond Dam Macoupin County | 34 | 1956 | Low | Not Available |
| Aurora - West Dam Kane County | 7 | 1930 | Low | Not Available |
| Augusta Lake Dam Hancock County | 34 | 1945 | Low | Not Available |
| Atkins Pond Dam Fulton County | 36 | 1975 | Low | Not Available |
| Atkinson Pond Dam Madison County | 13 | 1995 | Significant | Not Available |
| Athey Lake Dam Crawford County | 20 | 1952 | Low | Not Available |
| Arsenal Power Rock Island County | 29 | 1878 | Low | Poor |
| Arrow Wood Lake Dam Madison County | 15 | 2000 | High | Not Available |
| Arrowwood Lake Dam St. Clair County | 28 | 2001 | Low | Not Available |
| Arrowhead Lake Dam Williamson County | 16 | 1963 | Significant | Not Available |
| Arrowhead Country Club Lake Dam Peoria County | 35 | 1959 | Low | Not Available |
| Armstrong Pond Dam 2 Stark County | 22 | 1950 | Low | Not Available |
| Armstrong Pond Dam Bond County | 26 | 1974 | Low | Not Available |
| Armstrong Park Flood Control Reservoir Dam DuPage County | 22 | — | High | Not Available |
| Argyle Lake Dam McDonough County | 58 | 1949 | Significant | Not Available |
| Arentsen Pond Dam Hamilton County | 75 | 1992 | High | Not Available |
| Arentsen Pond 2 Dam Hamilton County | 15 | 1976 | Low | Not Available |
| Arenas Dam St. Clair County | 20 | 1950 | Significant | Not Available |
| Arclar/Willow Lake/Refuse Area 2 Dam Saline County | 108 | — | High | Not Available |
| Arboretum of South Barrington Dam Cook County | 8 | — | Low | Not Available |
| Aquaculture Lake Dam Jackson County | 40 | 1991 | Low | Not Available |
| Apple Canyon Lake Dam Jo Daviess County | 78 | 1978 | High | Not Available |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.