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 1126–1150 of 1,630
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Grand Tower Station Ash Pond Jackson County | 15 | — | Significant | Not Available |
| Grand Oaks Lake Dam Tazewell County | 22 | 1978 | Significant | Not Available |
| Grande Park Subdivision Detention As-7 Dam Kendall County | 8 | 2004 | Low | Not Available |
| Grahams Lake Dam Peoria County | 32 | 1950 | Low | Not Available |
| Gower Pond Dam 1 Livingston County | 23 | 1975 | Low | Not Available |
| Gotter Pond Dam Jersey County | 38 | 1969 | Low | Not Available |
| Gordon F. Moore Park Dam Madison County | 27 | 1988 | Significant | Not Available |
| Gold Hills Dam McDonough County | 33 | 2001 | Low | Not Available |
| Goin Lake Dam Hamilton County | 20 | 1975 | Significant | Not Available |
| Godfrey Pond Dam Madison County | 20 | 1900 | High | Not Available |
| Gnawbone Campground Dam Bond County | 27 | 1961 | Low | Not Available |
| Glenwood Lake Dam Coles County | 28 | 1970 | Low | Not Available |
| Glenview Farms Lake Dam Peoria County | 35 | 1970 | Low | Not Available |
| Glen O. Jones Lake Dam Saline County | 42 | 1963 | Significant | Not Available |
| Glenn Circle West Dam Will County | 7 | 2003 | Low | Not Available |
| Glenn Circle East Dam Will County | 7 | 2003 | Low | Not Available |
| Glendale Gardens Detention Pond Dam Madison County | 18 | 1998 | High | Not Available |
| Girard Sunset Lake Dam Macoupin County | 47 | 1955 | Low | Not Available |
| Ginger Lake Dam Madison County | 24 | 2002 | Significant | Not Available |
| Gill Lake Dam Schuyler County | 30 | 1974 | Significant | Not Available |
| Gillespie Country Club Lake Dam Macoupin County | 20 | 1921 | Low | Not Available |
| Giberson Pond Dam Greene County | 29 | 1970 | Low | Not Available |
| Georgetown Dam Vermilion County | 14 | 1937 | Significant | Not Available |
| George Gaskill Jr. Pond Dam Warren County | 26 | 1972 | Low | Not Available |
| Geneva Dam Kane County | 13 | 1910 | Low | Not Available |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.