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 1151–1175 of 1,630
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Gebhardt Lake Dam St. Clair County | — | — | High | Not Available |
| Gateway Medical Lake Dam Madison County | 31 | 1939 | High | Not Available |
| Gaskin Lake Dam Clay County | 10 | 1957 | Low | Not Available |
| Galvins Lake Dam Cook County | 10 | 1938 | Significant | Not Available |
| Gahr Pond Dam 3 Macoupin County | 28 | 1975 | Low | Not Available |
| Gahr Pond Dam 2 Macoupin County | 36 | 1975 | Low | Not Available |
| Gahr Pond Dam 1 Macoupin County | 32 | 1976 | Low | Not Available |
| Gaffney Pond Dam 1 Macoupin County | 29 | 1977 | Low | Not Available |
| Gabbert Pond Dam Tazewell County | 20 | 1950 | High | Not Available |
| Fyre Lake Dam Mercer County | 53 | 1972 | Significant | Not Available |
| Fullerton Industrial Park Dam DuPage County | 7 | 1968 | Low | Not Available |
| Fullersburg Dam DuPage County | 7 | 1934 | Low | Not Available |
| Frosty Acres Lake Dam Marion County | 20 | 1964 | Low | Not Available |
| Froghair Lake Dam McDonough County | 27 | 1974 | Low | Not Available |
| Freshwater Lake Dam Fulton County | 17 | 1962 | Low | Not Available |
| Fresh Water Lake Macoupin County | 28 | — | Significant | Not Available |
| Fresh Water Lake Saline County | 26 | — | Significant | Not Available |
| French Pond Dam Whiteside County | 23 | 1965 | Significant | Not Available |
| French Lake Dam Macoupin County | 31 | 1970 | Low | Not Available |
| Freitag Lake Dam Morgan County | 34 | 1970 | Low | Not Available |
| Freesen Lake Dam Scott County | 31 | 1967 | Low | Not Available |
| Freeman United/ /Lake Dam Franklin County | 18 | 1960 | Low | Not Available |
| Freeman United/Industry/Pond 1 Dam McDonough County | 31 | 1983 | Low | Not Available |
| Freeman United/ /Fresh Water Lake Dam Williamson County | 30 | 1964 | Significant | Not Available |
| Freeman United/ /2 Portal Lake Jefferson County | 15 | 1974 | Low | Not Available |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.