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 1526–1550 of 1,630
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Blandinsville City Reservoir Dam McDonough County | 20 | 1940 | High | Not Available |
| Black Tern Marsh Dam McHenry County | 7 | 1992 | Low | Not Available |
| Birkey Lake Dam Tazewell County | 28 | 1965 | Low | Not Available |
| Birchlers Lake Dam Randolph County | 22 | 1950 | Low | Not Available |
| Billingsley Pond Dam 3 Schuyler County | 33 | 1979 | Low | Not Available |
| Big Timber Lake Dam Peoria County | 46 | 1952 | Low | Not Available |
| Big Four Reservoir Dam Madison County | 27 | 1906 | Low | Not Available |
| Biebell Lake Dam St. Clair County | 9 | 1968 | Low | Not Available |
| Beyers Lake Dam Shelby County | 45 | — | Low | Not Available |
| Bethany Road Detention Pond Dam DeKalb County | 11 | — | High | Not Available |
| Bests Pond Dam Greene County | 37 | 1971 | Low | Not Available |
| Bessler Lake Dam Tazewell County | 29 | 1965 | Low | Not Available |
| Bertinettis Lake Dam Christian County | 29 | 1956 | Significant | Not Available |
| Bernard Conrady Pond Dam 1 Macoupin County | 27 | 1976 | Low | Not Available |
| Bernadotte Dam Fulton County | 12 | 1900 | Low | Not Available |
| Benson Pond Dam 1 Sangamon County | 29 | 1978 | Low | Not Available |
| Belvidere Dam Boone County | 10 | 1865 | Low | Not Available |
| Bell Pond Dam 1 Montgomery County | 27 | 1964 | Low | Not Available |
| Bellm Pond Dam Macoupin County | 30 | 1960 | Low | Not Available |
| Bellm Pond 2 Dam Macoupin County | 28 | 1968 | Low | Not Available |
| Belford Lake Dam Williamson County | 26 | 1966 | Significant | Not Available |
| Beil Lake 2 Dam St. Clair County | 29 | 1954 | Low | Not Available |
| Beil Lake 1 South Dam St. Clair County | 31 | 1942 | Low | Not Available |
| Beil Lake 1 East Dam St. Clair County | 31 | 1942 | Low | Not Available |
| Behnken Lake Dam Randolph County | 24 | 1975 | Low | Not Available |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.