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 26–50 of 360
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Waterloo Reservoir 2 Dam Monroe County | 19 | 1950 | Significant | Not Available |
| Waterloo Reservoir 1 Dam Monroe County | 31 | 1924 | Significant | Not Available |
| Waterloo New Reservoir Dam Monroe County | 42 | 1961 | Significant | Not Available |
| Warren Levis Dam Madison County | 33 | 1947 | Significant | Not Available |
| Wanboro Lake Dam Edwards County | 28 | 1977 | Significant | Not Available |
| Virginia Lake Dam Cass County | 42 | 1933 | Significant | Not Available |
| Vernor Lake Dam Richland County | 42 | 1924 | Significant | Not Available |
| Vermont City Reservoir Dam McDonough County | 36 | 1940 | Significant | Not Available |
| Venice Station Old Ash Pond Madison County | 15 | — | Significant | Not Available |
| Venice Station New Ash Pond St. Clair County | 15 | — | Significant | Not Available |
| Venado Pequeno Lake Dam Tazewell County | 44 | 1975 | Significant | Not Available |
| Venado Grande Lake Dam Tazewell County | 44 | 1975 | Significant | Not Available |
| Valevue Lake Dam Morgan County | 20 | 1970 | Significant | Not Available |
| Twin Lakes Drive Dam Madison County | — | 1980 | Significant | Not Available |
| Twin Lake Dam St. Clair County | 15 | — | Significant | Not Available |
| Twenty One Guns Campground Lake Dam Clark County | 30 | 1957 | Significant | Not Available |
| Tower Lake Dam Madison County | 61 | 1964 | Significant | Not Available |
| Touhy Avenue Reservoir Dam Cook County | 10 | 2004 | Significant | Not Available |
| Tompkins Pond Dam Fulton County | 28 | 1974 | Significant | Not Available |
| Timber Lake Dam Madison County | 20 | 1970 | Significant | Not Available |
| Timber Lake Dam Carroll County | 25 | 1960 | Significant | Not Available |
| Timber Lake Dam St. Clair County | 20 | — | Significant | Not Available |
| Thirteen Club Dam Peoria County | 30 | — | Significant | Not Available |
| Third Lake Dam Edgar County | 39 | 1961 | Significant | Not Available |
| Techny Reservoir Dam Cook County | 11 | 1979 | Significant | Not Available |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.