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 651–675 of 1,008
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Hennepin Station East Ash Pond Putnam County | 26 | 1996 | Low | Not Available |
| Heller Lake Dam Fulton County | 22 | 1965 | Low | Not Available |
| Heild Pond Dam Jersey County | 19 | 1975 | Low | Not Available |
| Heenren Pond Dam Montgomery County | 23 | 1970 | Low | Not Available |
| Heartland Oaks 2 Dam St. Clair County | 15 | — | Low | Not Available |
| Heartland Oaks 1 Dam St. Clair County | 29 | — | Low | Not Available |
| Hayes Pond Dam Coles County | 26 | 1968 | Low | Not Available |
| Hawthorn Woods Country Club Wwtp Dam Lake County | 17 | 2006 | Low | Not Available |
| Hatchery Lake Dam Kane County | 25 | 1938 | Low | Not Available |
| Hastie Mining//Tailings Pond 2-3 Dam Hardin County | 41 | — | Low | Not Available |
| Hastie Mining//Pond 1-Clarification Pond Dam Hardin County | 49 | 2000 | Low | Not Available |
| Hartsook Pond Dam 1 Macoupin County | 30 | 1977 | Low | Not Available |
| Harry Mullens Pond Dam 1 Macoupin County | 32 | 1977 | Low | Not Available |
| Harrison Lake Dam Edwards County | 17 | 1956 | Low | Not Available |
| Harrisburg Reservoir Dam Saline County | 25 | 1920 | Low | Not Available |
| Harrell Lake South Dam Adams County | 24 | 1965 | Low | Not Available |
| Harrell Lake North Dam Adams County | 22 | 1965 | Low | Not Available |
| Harold Redfern Pond Dam Macoupin County | 26 | 1978 | Low | Not Available |
| Hardiman Pond Dam Fayette County | 25 | 1977 | Low | Not Available |
| Hamilton County Coal/Hamilton County/Coal Refuse 1 Dam Hamilton County | 50 | — | Low | Not Available |
| Hambaugh- Martin WS Str 8 Brown County | 31 | 1961 | Low | Not Available |
| Hambaugh- Martin WS Str 7 Brown County | 27 | 1961 | Low | Not Available |
| Hambaugh- Martin WS Str 4 Brown County | 26 | 1961 | Low | Not Available |
| Hambaugh-Martin 6 Dam Brown County | 25 | 1959 | Low | Not Available |
| Hambaugh-Martin 5 Dam Brown County | 23 | 1960 | Low | Not Available |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.