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 1026–1050 of 1,630
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Myers Ranch Farms Pond Dam Union County | 38 | 1997 | Significant | Not Available |
| Nashville City Reservoir 2 Dam Washington County | 18 | 1935 | Low | Not Available |
| Nashville City Reservoir Dam Washington County | 26 | 1935 | High | Not Available |
| National Petroleum Chemical Plant Lake Dam Douglas County | 21 | 1952 | Significant | Not Available |
| Neffs Lake Dam Marion County | 22 | 1963 | Low | Not Available |
| New Cherry Lake Dam Perry County | 22 | 1969 | Significant | Not Available |
| Newell Dam Iroquois County | 30 | 1951 | Low | Not Available |
| New Gillespie Lake Dam Macoupin County | 41 | 1956 | Significant | Not Available |
| New Harrisburg Reservoir Dam Saline County | 38 | 1955 | Significant | Not Available |
| Newlin Lake Dam Crawford County | 10 | 1966 | Low | Not Available |
| Newmans Lake Dam Clark County | 24 | 1954 | Low | Not Available |
| New Pittsfield Lake 1 Dam Pike County | 48 | 1961 | Low | Not Available |
| New Thompson Lake Dam Jackson County | 16 | 1957 | Low | Not Available |
| Newton-Hager Lake Dam Bureau County | 29 | 1971 | Low | Not Available |
| Newton Lake Dam Marshall County | 31 | 1965 | Low | Not Available |
| Newton Power Station Lake Dam Jasper County | 54 | 1975 | Significant | Not Available |
| Newton Power Station Supplemental Cooling Pond Dam Jasper County | 17 | 2003 | Low | Not Available |
| Newton Station Ash Pond Jasper County | 22 | — | Significant | Not Available |
| New West Fork Club Lake Dam St. Clair County | 15 | 1955 | Low | Not Available |
| Nickel's Pond Dam Morgan County | 30 | 1972 | Low | Not Available |
| Nix Lake Dam Richland County | 23 | 1953 | Low | Not Available |
| Nixon Pond Dam 1 Macoupin County | 22 | 1977 | Low | Not Available |
| Nokomis Sportsmans Club Lake Dam Montgomery County | 23 | 1970 | Significant | Not Available |
| Norris City Reservoir Dam White County | 20 | 1937 | High | Not Available |
| Norris Lake Dam Henderson County | 21 | 1948 | Significant | Not Available |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.