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 1001–1025 of 1,630
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Montgomery Dam Kane County | 7 | 1969 | Significant | Not Available |
| Montrose City Lake Dam Cumberland County | 16 | 1954 | Low | Not Available |
| Moorman Park Dam Adams County | 27 | 1987 | Low | Not Available |
| Mooseheart Lake Dam Kane County | 15 | 1914 | Significant | Not Available |
| Moraine View Dam McLean County | 42 | 1963 | High | Not Available |
| Moran Pond Dam 1 Montgomery County | 32 | 1977 | Low | Not Available |
| Morrison Lake Dam Mercer County | 33 | 1965 | Significant | Not Available |
| Morrison Rockwood Siltation Pond Dam Whiteside County | 29 | 1981 | Low | Not Available |
| Morrison Wwtp Excess Flow Storage Pond Dam Whiteside County | 8 | — | Significant | Not Available |
| Msdgc Sludge Pond 1-3a Dam Fulton County | 39 | 1973 | Significant | Not Available |
| Mt. Olive City Lake Dam Macoupin County | 31 | 1938 | Low | Not Available |
| Mueth Lake Dam St. Clair County | 30 | 1997 | Low | Not Available |
| Mulvaney Pond Dam Peoria County | 38 | 1978 | Low | Not Available |
| Murrayville Woodson Lake Dam Morgan County | 28 | 1963 | Significant | Not Available |
| Musick Pond Dam Hancock County | 20 | 1965 | Low | Not Available |
| MWRDGC Acid Lake Dam Fulton County | 28 | 1950 | Low | Not Available |
| MWRDGC Eagle Lake Dam Fulton County | 19 | 1974 | Low | Not Available |
| MWRDGC Edsall Lake Dam Fulton County | 22 | 1952 | Low | Not Available |
| MWRDGC Kay Lake Dam Fulton County | 15 | 1958 | Low | Not Available |
| MWRDGC Land Fill Lake Dam Fulton County | 17 | 1958 | Low | Not Available |
| MWRDGC Lower Wood Lake Dam Fulton County | 26 | 1958 | Low | Not Available |
| MWRDGC Picinic Lake Dam Fulton County | 35 | 1940 | Low | Not Available |
| MWRDGC Road Fill Lake Dam Fulton County | 37 | 1965 | Low | Not Available |
| MWRDGC Upper Acid Lake Dam Fulton County | 35 | 1958 | Low | Not Available |
| MWRDGC Upper Wood Lake Dam Fulton County | 20 | 1958 | Low | Not Available |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.