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 1,008
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Mclaughlin Pond Dam Rock Island County | 43 | 1972 | Low | Not Available |
| Mcmann Lake Dam Menard County | 19 | 1970 | Low | Not Available |
| Mcwilliams Pond Dam 1 Montgomery County | 30 | 1970 | Low | Not Available |
| Medina Country Club Meacham Creek Dam DuPage County | 9 | — | Low | Not Available |
| Meisenheimer Pond Dam 1 Macoupin County | 26 | 1977 | Low | Not Available |
| Meisenheimer Pond Dam 2 Macoupin County | 26 | 1979 | Low | Not Available |
| Memorial East Campus Lake Dam St. Clair County | 28 | 1958 | Low | Not Available |
| Mendota Agri-Products Storage Lagoon 5 Dam LaSalle County | 16 | 2012 | Low | Not Available |
| Meridian Campus Lake 7 Dam DuPage County | 9 | 1993 | Low | Not Available |
| Meridian Campus Liberty Road Dam DuPage County | 9 | 1993 | Low | Not Available |
| Meridian Campus Meridian Parkway Dam DuPage County | 9 | 1993 | Low | Not Available |
| Mermet Dam Massac County | 10 | 1950 | Low | Not Available |
| Meshach Lake Dam Macoupin County | 25 | 1970 | Low | Not Available |
| Micks Lake Dam Madison County | 25 | 1964 | Low | Not Available |
| Midland/Elm Mine/Fresh Water Lake Dam Peoria County | 41 | 1967 | Low | Not Available |
| Midland/Elm Mine/ Slurry Lake 1 Dam Peoria County | 28 | 1967 | Low | Not Available |
| Mike Mckee Pond Dam Macoupin County | 34 | 1978 | Low | Not Available |
| Milhurst Lake Dam Kendall County | 20 | 1927 | Low | Not Available |
| Mill Creek Strcture 2 Dam Clark County | 38 | 1973 | Low | Not Available |
| Mill Creek Structure 6 Dam Clark County | 34 | 1976 | Low | Not Available |
| Mill Creek Structure 7 Dam Clark County | 42 | 1976 | Low | Not Available |
| Mill Creek Structure 8 Dam Clark County | 40 | 1987 | Low | Not Available |
| Mill Creek Structure 9 Dam Clark County | 46 | 1986 | Low | Not Available |
| Mill Creek WS Str 4 Clark County | 35 | 1976 | Low | Not Available |
| Millenium Parkway Dam Will County | 10 | 2003 | Low | Not Available |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.