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 1351–1375 of 1,630
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Springfield Coal/Industry/Pond 33 Dam McDonough County | 30 | — | Low | Not Available |
| Springfield Coal/Industry/Pond 4 Dam McDonough County | 47 | 1983 | Low | Not Available |
| Springfield Coal/Industry/Pond 9 Dam Schuyler County | 40 | 1987 | Low | Not Available |
| Springfield Coal/Orient 3/Clar Pond Saddle Dam Jefferson County | 11 | 1985 | Low | Not Available |
| Springfield Coal/Orient 3/Fine Refuse Impoundment Jefferson County | 26 | 1981 | Low | Not Available |
| Springfield Coal/Orient 4/Aux Slurry Pond Williamson County | 47 | 1986 | Low | Not Available |
| Springfield Coal/Orient 4/East Slurry Imp Williamson County | 66 | 1985 | High | Not Available |
| Springfield Coal/Orient 6 /South Slurry Cell Dam Jefferson County | 54 | 1985 | Significant | Not Available |
| Springfield Lakeside Ash Disposal Pond Dam Sangamon County | 28 | 1987 | Low | Not Available |
| Spring Lake Dam Winnebago County | 10 | 1965 | Significant | Not Available |
| Spring Lake Dam Champaign County | 28 | 1964 | Low | Not Available |
| Spring Lake Dam McDonough County | 46 | 1927 | Significant | Not Available |
| Spring Lake Road Dam St. Clair County | 21 | 1968 | Significant | Not Available |
| Spring Lake Wetland Unit 1 Tazewell County | 8 | — | Low | Not Available |
| Spring Lake Wetland Unit 2 Tazewell County | 10 | — | Low | Not Available |
| Spring Lake Wetland Unit 3 Tazewell County | 10 | — | Low | Not Available |
| Spring Valley Estates Lake Dam Jersey County | 26 | 1970 | Low | Not Available |
| Spring Valley Lake Dam Kane County | 19 | 1973 | Low | Not Available |
| Spring Valley WWTP Lagoon Dam Bureau County | 17 | — | Significant | Not Available |
| Staab Pond Dam Peoria County | 30 | 1952 | Low | Not Available |
| Stanbery Lake Dam Fayette County | 20 | 1946 | Low | Not Available |
| Standard City Lake Dam Macoupin County | 33 | 1920 | Low | Not Available |
| Stanrick Dam Rock Island County | 32 | 1988 | Low | Not Available |
| Stark Farm Dam DuPage County | 10 | 1992 | Low | Not Available |
| Stark Pond Dam Woodford County | 33 | 1952 | Low | Not Available |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.