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 1201–1225 of 1,630
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Rickmeyer Big Lake Dam McDonough County | 16 | 1981 | Low | Not Available |
| Rickmeyer Small Lake Dam McDonough County | 30 | 1983 | Low | Not Available |
| Ridgeway Lake Dam Crawford County | 21 | 1964 | Low | Not Available |
| Rinaker Lake Dam Macoupin County | 23 | 1900 | Low | Not Available |
| Rinco Instrument Corporation Lake Dam Bond County | 34 | 1968 | Low | Not Available |
| Rising Moon Road Detention Area Dam Sangamon County | 10 | — | Low | Not Available |
| Rising Spring Orchard Lake Dam Pike County | 25 | 1956 | Low | Not Available |
| River Bluffs Girl Scout Council Dam Madison County | 35 | 1950 | Low | Not Available |
| Riverstone Group Dam Henry County | — | — | High | Not Available |
| Riverview Dam Coles County | 29 | 1989 | Significant | Not Available |
| R. Johnson Pond Dam Warren County | 26 | 1970 | Low | Not Available |
| Rlf/Pawnee Mine/Slurry Impoundment 1 Dam Christian County | 30 | 1976 | High | Not Available |
| Rlf/Pawnee Mine/Slurry Impoundment 2 Dam Christian County | 37 | 1985 | High | Not Available |
| Rlf/Pawnee Mine/Slurry Impoundment 3 Dam Christian County | 20 | 1999 | Low | Not Available |
| Roachtown Lake Dam St. Clair County | 21 | 1963 | Low | Not Available |
| Roberts Lake Dam Effingham County | 22 | 1965 | Low | Not Available |
| Rochester-Goodell Reservoir Dam Marion County | 22 | 1959 | Low | Not Available |
| Rockman Pond Dam 1 Union County | 34 | 1973 | Low | Not Available |
| Rock River Water Reclamation District Excess Flow Basin Dam Winnebago County | 8 | 2016 | High | Not Available |
| Rockton Winnebago County | 7 | 1929 | Low | Satisfactory |
| Rocky Ford Pond Dam Clinton County | 28 | 1967 | Low | Not Available |
| Rocky Ford Sportsman Club North Lake Dam Montgomery County | 29 | 1960 | Significant | Not Available |
| Rocky Ford Sportsman Club South Lake Dam Montgomery County | 30 | 1950 | Significant | Not Available |
| Rocky Run Lake Dam Hancock County | 69 | 1971 | Significant | Not Available |
| Roegge Pond Dam Morgan County | 31 | 1978 | Low | Not Available |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.