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 126–150 of 360
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Omaha Township Civic Center Dam Gallatin County | 18 | 1980 | Significant | Not Available |
| Olmsted Locks and Dam Ballard County | 67 | 2018 | Significant | Not Available |
| Old Tom Creek WS Str 29 Henderson County | 22 | 1956 | Significant | Not Available |
| Old Mt. Olive City Lake Dam Macoupin County | 37 | 1900 | Significant | Not Available |
| Oakwood Drive Dam Tazewell County | 23 | 1950 | Significant | Not Available |
| Oakwood Country Club Lake Dam Henry County | 25 | 1964 | Significant | Not Available |
| Oakland Lake Dam Coles County | 18 | 1937 | Significant | Not Available |
| North Aurora Dam Kane County | 6 | 1974 | Significant | Not Available |
| Norris Lake Dam Henderson County | 21 | 1948 | Significant | Not Available |
| Nokomis Sportsmans Club Lake Dam Montgomery County | 23 | 1970 | Significant | Not Available |
| Newton Station Ash Pond Jasper County | 22 | — | Significant | Not Available |
| Newton Power Station Lake Dam Jasper County | 54 | 1975 | Significant | Not Available |
| New Harrisburg Reservoir Dam Saline County | 38 | 1955 | Significant | Not Available |
| New Gillespie Lake Dam Macoupin County | 41 | 1956 | Significant | Not Available |
| New Cherry Lake Dam Perry County | 22 | 1969 | Significant | Not Available |
| National Petroleum Chemical Plant Lake Dam Douglas County | 21 | 1952 | Significant | Not Available |
| Myers Ranch Farms Pond Dam Union County | 38 | 1997 | Significant | Not Available |
| Murrayville Woodson Lake Dam Morgan County | 28 | 1963 | Significant | Not Available |
| Msdgc Sludge Pond 1-3a Dam Fulton County | 39 | 1973 | Significant | Not Available |
| Morrison Wwtp Excess Flow Storage Pond Dam Whiteside County | 8 | — | Significant | Not Available |
| Morrison Lake Dam Mercer County | 33 | 1965 | Significant | Not Available |
| Mooseheart Lake Dam Kane County | 15 | 1914 | Significant | Not Available |
| Montgomery Dam Kane County | 7 | 1969 | Significant | Not Available |
| Monee Reservoir Dam Will County | 29 | 1900 | Significant | Not Available |
| Mississippi River Lock and Dam 19 Lee County | 63 | 1913 | Significant | Not Available |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.