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 726–750 of 1,630
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Macoupin Energy Recirculation Pond Dam Macoupin County | 43 | 1970 | High | Not Available |
| Maas Dam Fulton County | 60 | 1999 | Low | Not Available |
| Lynnwood Lake Dam Henry County | 24 | 1960 | Low | Not Available |
| Lyle Avenue Dam Kane County | 8 | 1997 | Low | Not Available |
| Lutticken South Pond Dam Tazewell County | 33 | 1962 | Low | Not Available |
| Lutticken Lake Dam Tazewell County | 60 | 1959 | Low | Not Available |
| Lusters Lake Dam Christian County | 22 | 1960 | Low | Not Available |
| Lucinda Lake Dam Adams County | 25 | 2000 | Significant | Not Available |
| Lower Elmhurst Dam Cook County | 15 | 1994 | High | Not Available |
| Lower Columbia Quarry Dam Macoupin County | 30 | — | Low | Not Available |
| Lower Batavia Dam Kane County | 5 | 1916 | Significant | Not Available |
| Lowell Gardner Pond Dam Warren County | 26 | 1975 | Low | Not Available |
| Lost Nation Country Club Lake Dam Ogle County | 30 | 1975 | Low | Not Available |
| Loren See Lake Dam Edgar County | 26 | 1960 | Low | Not Available |
| Longs Lake Dam Cass County | 28 | 1960 | Low | Not Available |
| Long Pond Dam Greene County | 17 | 1965 | Undetermined | Not Available |
| Long Lake Dam Fulton County | 20 | 1965 | High | Not Available |
| Lockport Lock and Controlling Works Will County | 65 | 1933 | High | Not Available |
| Loch Lomond Dam Lake County | 14 | 1958 | Significant | Not Available |
| L & N Reservoir Jefferson County | 25 | 1910 | High | Not Available |
| Living Springs Camp Pond Dam Fulton County | 26 | 1974 | Low | Not Available |
| Little Wabash River Dam Effingham County | 13 | 1900 | Low | Not Available |
| Little Swan Lake Dam Warren County | 49 | 1968 | Low | Not Available |
| Little Sister Lake Dam Fulton County | 38 | 1965 | Low | Not Available |
| Little Rocky Run Lake Dam Hancock County | 64 | 1971 | Significant | Not Available |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.