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 351–375 of 1,008
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Oak Lake Estates Dam Tazewell County | 30 | 1978 | Low | Not Available |
| Nystrom Lake Dam Henry County | 28 | 1950 | Low | Not Available |
| Nugent-Shapanski 3 Jersey County | 28 | 1955 | Low | Not Available |
| Nugent-Shapanski 2 Jersey County | 30 | 1953 | Low | Not Available |
| Nugent-Shapanski 1 Jersey County | 30 | 1954 | Low | Not Available |
| Nugent-Schpanski 6 Lake Dam Jersey County | 40 | 1956 | Low | Not Available |
| Nugent-Schpanski 4 Lake Dam Jersey County | 31 | 1954 | Low | Not Available |
| North Lake Dam Kane County | 26 | 1948 | Low | Not Available |
| Northern Oaks Lake Dam Tazewell County | 50 | 1969 | Low | Not Available |
| Northbridge Subdivision Lake Dam McLean County | 11 | 1999 | Low | Not Available |
| North Aurora Towne Centre Basin D Dam Kane County | 9 | — | Low | Not Available |
| North Aurora Towne Centre Basin C Dam Kane County | 15 | — | Low | Not Available |
| North Aurora Towne Centre Basin B Dam Kane County | 10 | — | Low | Not Available |
| Nixon Pond Dam 1 Macoupin County | 22 | 1977 | Low | Not Available |
| Nix Lake Dam Richland County | 23 | 1953 | Low | Not Available |
| Nickel's Pond Dam Morgan County | 30 | 1972 | Low | Not Available |
| New West Fork Club Lake Dam St. Clair County | 15 | 1955 | Low | Not Available |
| Newton Power Station Supplemental Cooling Pond Dam Jasper County | 17 | 2003 | Low | Not Available |
| Newton Lake Dam Marshall County | 31 | 1965 | Low | Not Available |
| Newton-Hager Lake Dam Bureau County | 29 | 1971 | Low | Not Available |
| New Thompson Lake Dam Jackson County | 16 | 1957 | Low | Not Available |
| New Pittsfield Lake 1 Dam Pike County | 48 | 1961 | Low | Not Available |
| Newmans Lake Dam Clark County | 24 | 1954 | Low | Not Available |
| Newlin Lake Dam Crawford County | 10 | 1966 | Low | Not Available |
| Newell Dam Iroquois County | 30 | 1951 | Low | Not Available |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.