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 901–925 of 1,630
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Lutticken South Pond Dam Tazewell County | 33 | 1962 | Low | Not Available |
| Lyle Avenue Dam Kane County | 8 | 1997 | Low | Not Available |
| Lynnwood Lake Dam Henry County | 24 | 1960 | Low | Not Available |
| Maas Dam Fulton County | 60 | 1999 | Low | Not Available |
| Macoupin Energy Recirculation Pond Dam Macoupin County | 43 | 1970 | High | Not Available |
| Macoupin Energy/Refuse Disposal Area 5 Macoupin County | 95 | 1987 | High | Not Available |
| Macoupin Energy Refuse Disposal Area 6 Macoupin County | 117 | 1991 | High | Not Available |
| Macoupin Energy Smith Reservoir Dam Macoupin County | 58 | 1969 | High | Not Available |
| Madison Lake Dam Williamson County | 19 | 1919 | Low | Not Available |
| Magin Lake Dam Madison County | 37 | 1968 | Low | Not Available |
| Main Lake Dam Hamilton County | 28 | 1976 | Low | Not Available |
| Main Street Triangle Dam Cook County | 9 | — | Significant | Not Available |
| Mann Lake Dam Massac County | 24 | 1960 | Low | Not Available |
| Manson Heights Dams Knox County | 25 | 1950 | Low | Not Available |
| Maple Brook Estates Dam Will County | 7 | 1997 | Low | Not Available |
| Maple Lake Dam Cook County | 25 | 1918 | Significant | Not Available |
| Marian Lake Dam Adams County | 26 | — | High | Not Available |
| Marine Lake Dam Madison County | 22 | — | Significant | Not Available |
| Marion Country Club Lake Dam Williamson County | 17 | 1914 | Low | Not Available |
| Marion Prison Lake Dam Williamson County | 26 | 1991 | Significant | Not Available |
| Marion Reservoir Dam Williamson County | 25 | 1971 | Significant | Not Available |
| Marissa Recreation Association North Lake Dam St. Clair County | 27 | 1954 | Significant | Not Available |
| Marissa Recreation Association South Lake Dam St. Clair County | 32 | 1954 | Significant | Not Available |
| Marissa Reservoir Dam St. Clair County | 22 | 1938 | Significant | Not Available |
| Marissa WWTP Basin Dam St. Clair County | — | — | Significant | Not Available |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.