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 576–600 of 1,630
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Hennepin Station East Ash Pond Putnam County | 26 | 1996 | Low | Not Available |
| Hennepin Station West Ash Pond Dam Putnam County | — | — | Significant | Not Available |
| Heritage Lake Dam Tazewell County | 56 | 1968 | Significant | Not Available |
| Herrin Reservoir 1 Dam Williamson County | 6 | 1915 | Significant | Not Available |
| Herrin Reservoir 2 Dam Williamson County | 27 | 1926 | Significant | Not Available |
| Hess Pond Dam Morgan County | 28 | 1969 | Low | Not Available |
| Heuerman Pond Dam Peoria County | — | 1974 | Significant | Not Available |
| Heyen Lake Dam Montgomery County | 32 | 1966 | Low | Not Available |
| Hickory Hills Lake Dam Sangamon County | 29 | 1995 | Low | Not Available |
| Hickory Lake Dam Washington County | 24 | 1971 | Low | Not Available |
| Hickory Lake Dam Grundy County | 12 | 2002 | Low | Not Available |
| Hickory Lake Dam Logan County | 41 | 1972 | Low | Not Available |
| Hidden Point Dam Peoria County | 39 | — | High | Not Available |
| Hidden Valley Lake Dam Ogle County | 16 | 1968 | Significant | Not Available |
| High Hill Farms Dam McHenry County | 23 | 1977 | High | Not Available |
| Highland Community College Lake Dam Stephenson County | 20 | 1970 | High | Not Available |
| Highland Old City Reservoir Dam Madison County | 15 | 1912 | Low | Not Available |
| Highland Sportsman Club Lake Dam Madison County | 34 | 1952 | Low | Not Available |
| Hiland Lake Dam Hancock County | 29 | 1965 | Low | Not Available |
| Hillboro Energy/Deer Run/Crd 2 Dam Montgomery County | 77 | — | High | Not Available |
| Hillcrest Dairy Wastwater Lagoon Dam Peoria County | 20 | 2001 | Low | Not Available |
| Hillcrest Farms Pond 1 Bond County | 29 | 1968 | Low | Not Available |
| Hill Lake Dam Monroe County | 30 | 1968 | High | Not Available |
| Hillsboro Energy/Deer Run/CRD 1 Dam Montgomery County | 80 | — | High | Not Available |
| Hinz Pond Dam Union County | 26 | 1966 | Low | Not Available |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.