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 51–75 of 251
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Salem Reservoir Dam Marion County | 21 | 1912 | High | Not Available |
| Russel Funk Dam St. Clair County | 17 | — | High | Not Available |
| Rock River Water Reclamation District Excess Flow Basin Dam Winnebago County | 8 | 2016 | High | Not Available |
| Rlf/Pawnee Mine/Slurry Impoundment 2 Dam Christian County | 37 | 1985 | High | Not Available |
| Rlf/Pawnee Mine/Slurry Impoundment 1 Dam Christian County | 30 | 1976 | High | Not Available |
| Riverstone Group Dam Henry County | — | — | High | Not Available |
| Richton Crossing Dam Cook County | 16 | 1976 | High | Not Available |
| Rice Lake Dam DuPage County | 13 | 1991 | High | Not Available |
| Renee Drive Detention Dam Kane County | 7 | 2011 | High | Not Available |
| Rend Dam Franklin County | 54 | 1971 | High | Not Available |
| Ravenel Lake Dam St. Clair County | 14 | 2003 | High | Not Available |
| Raccoon Lake Dam Marion County | 29 | 1943 | High | Not Available |
| Prairie State Energy Raw Water Dam Washington County | 40 | 2010 | High | Not Available |
| Prairie Lake Dam Cass County | 68 | 1999 | High | Not Available |
| Pin Oak Drive Pond Dam Madison County | 14 | — | High | Not Available |
| Pine Lake Dam Pike County | 25 | 1924 | High | Not Available |
| Pine Lake Dam Kane County | 14 | 1940 | High | Not Available |
| Pierce Lake Dam Winnebago County | 46 | 1960 | High | Not Available |
| Pebble Creek Dam Winnebago County | 21 | 1984 | High | Not Available |
| Patriot Parkway Dam Kane County | 15 | 2005 | High | Not Available |
| Paradise Lake Dam Coles County | 46 | 1929 | High | Not Available |
| Paradise Lake Dam Madison County | 20 | — | High | Not Available |
| Pana Lake Dam Shelby County | 53 | 1920 | High | Not Available |
| Page Park Dam Winnebago County | 41 | 1980 | High | Not Available |
| Owens Lake Dam Macoupin County | 33 | — | High | Not Available |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.