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 1226–1250 of 1,630
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Roemelin Pond Dam 1 Madison County | 27 | 1975 | Low | Not Available |
| Rogenski Lake Dam Madison County | 7 | — | Significant | Not Available |
| Rohrer Pond Dam 1 Montgomery County | 25 | 1970 | Low | Not Available |
| Roney Lake Dam Warren County | 23 | 1965 | Low | Not Available |
| Roodhouse Lake Dam Greene County | 26 | 1974 | Low | Not Available |
| Rose Estates Dam Peoria County | 47 | 2000 | Low | Not Available |
| Rose Lake Dam Marion County | 23 | 1954 | Low | Not Available |
| Round Grove Sportsman Lake Dam Clark County | 28 | 1947 | Low | Not Available |
| Roundhouse Lake Dam Knox County | 35 | 1934 | Significant | Not Available |
| Round Lake Dam Lake County | 9 | 1945 | Significant | Not Available |
| Rowden Lake Dam Jersey County | 40 | 1971 | Low | Not Available |
| Rowe Lake Dam Morgan County | 27 | 1970 | Significant | Not Available |
| Roy Demanes Pond Dam Peoria County | 44 | 1975 | Low | Not Available |
| Ruppert Pond Dam Montgomery County | — | 1977 | Significant | Not Available |
| Russel Funk Dam St. Clair County | 17 | — | High | Not Available |
| Rustic Acres Lake Dam Henry County | 40 | 1973 | Significant | Not Available |
| Sabic Basins Dam LaSalle County | 10 | 1960 | Significant | Not Available |
| Sacome Pond Dam Christian County | 25 | 1963 | Low | Not Available |
| Saddlewood Estates Dam LaSalle County | 20 | 1991 | Low | Not Available |
| Saganashkee Slough 1 Dam Cook County | 14 | 1948 | Significant | Not Available |
| Saganashkee Slough 2 Dam Cook County | 8 | 1948 | Low | Not Available |
| Saganashkee Slough 6 Dam Cook County | 7 | 1948 | Significant | Not Available |
| Saganashkee Slough 7 Dam Cook County | 9 | 1948 | Low | Not Available |
| Salem Reservoir Dam Marion County | 21 | 1912 | High | Not Available |
| Salem Township Road 343 Dam Knox County | 48 | 1997 | Low | Not Available |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.