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 1601–1625 of 1,630
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Wilmington Dam Will County | 12 | 1920 | Low | Not Available |
| Wilmor Sportsman Club East Lake Dam Tazewell County | 31 | 1954 | Low | Not Available |
| Wilmor Sportsman Club West Lake Dam Tazewell County | 31 | 1954 | Low | Not Available |
| Windfall Lake Dam Vermilion County | 14 | 1964 | Low | Not Available |
| Wold Lake Dam McHenry County | 11 | 1965 | Low | Not Available |
| Wolf Creek Golf Course Dam Livingston County | 13 | 1997 | Low | Not Available |
| Wolf Pond Dam Fulton County | 30 | 1969 | Low | Not Available |
| Wonder Lake Dam McHenry County | 27 | 1929 | High | Not Available |
| Wonder Lake Sediment Dewatering Facility Dam McHenry County | 22 | 2014 | High | Not Available |
| Woodbine Country Club Lake Dam Greene County | 27 | 1926 | Low | Not Available |
| Woodfield Lake Estates Dam St. Clair County | 15 | 2006 | High | Not Available |
| Woodfield Lakes Dam Cook County | 8 | 1977 | Low | Not Available |
| Woodhaven Lake Dam Lee County | 33 | 1975 | Low | Not Available |
| Woodlake Estates Dam Sangamon County | 26 | — | High | Not Available |
| Woodland Lake Dam Macoupin County | 27 | — | Significant | Not Available |
| Woodscreek Detention Dam McHenry County | 13 | 1991 | Low | Not Available |
| Woods Lake Dam Fulton County | 21 | 1953 | Low | Not Available |
| Wynstone Boulevard Dam Will County | 8 | — | Low | Not Available |
| Yates Lake Dam Madison County | 25 | 1968 | Low | Not Available |
| Yellow Head Marsh Dam McHenry County | 7 | 1990 | Low | Not Available |
| Ylsa Lake Dam Monroe County | 20 | 1995 | Significant | Not Available |
| York Pond Dam Crawford County | 15 | — | Significant | Not Available |
| Yorkville Dam Kendall County | 12 | 1961 | Significant | Not Available |
| Young-Gibson Lake Dam Henderson County | 32 | 1955 | Low | Not Available |
| Youngs Lake Dam Warren County | 37 | 1956 | Low | Not Available |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.