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 351–360 of 360
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Anets Woods West Basin Dam Cook County | — | — | Significant | Not Available |
| American Zinc Smelter Company Large Lake Dam Montgomery County | 31 | 1916 | Significant | Not Available |
| Alton Twin Lakes-South Lake Dam Madison County | 32 | 1970 | Significant | Not Available |
| Altamont Reservoir Dam Effingham County | 42 | 1972 | Significant | Not Available |
| Alsey Lake Dam Scott County | 27 | 1969 | Significant | Not Available |
| Alpena/Murdock/Slurry Pond 5 Dam Douglas County | 23 | 1984 | Significant | Not Available |
| Algonquin Dam McHenry County | 9 | 1947 | Significant | Not Available |
| Alexander Pond Dam Bond County | — | 1973 | Significant | Not Available |
| Albers Lake Dam Clinton County | 7 | 2000 | Significant | Not Available |
| A. E. Staley Cooling Lake Dam Macon County | 22 | 1944 | Significant | Not Available |
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Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.