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

All Dams in Illinois

Showing 351375 of 1,630

Dam NameHeight (ft)YearHazardCondition
Duck Creek Ash Pond 1 Dam

Fulton County

28SignificantNot Available
Duck Creek Ash Pond 2 Dam

Fulton County

501984LowNot Available
Duck Creek Bottom Ash Pond Dam

Fulton County

10SignificantNot Available
Duck Creek Gypsum Stack Dam

Fulton County

45LowNot Available
Duck Creek Recycle Pond Dam

Fulton County

41LowNot Available
Duck Creek Station Dams

Fulton County

1231975HighNot Available
Duck Valley Dam

Kane County

401940LowNot Available
Dunlap Lake Dam

Madison County

451941HighNot Available
Dupage Airport Lower Dam

DuPage County

151992LowNot Available
Dupage Airport Upper Dam

DuPage County

151993LowNot Available
Durst Lake Dam

Williamson County

131942LowNot Available
Dynegy/Havana Sta/East Ash Pond Dam

Mason County

36HighNot Available
Dynegy/Havana Sta/East Ash Pond System

Mason County

381999HighNot Available
Dynegy/Havana Sta/South Ash Pond Dam

Mason County

SignificantNot Available
Dynegy/Havana Station/Cell 1, Polishing P

Mason County

261993HighNot Available
Dynegy/Vermilion Station/Fly Ash Disposal Pond Dam

Vermilion County

401991LowNot Available
Dynegy/ Wood River East Ash Disposal Pond Dam

Madison County

332005HighNot Available
Dynegy /Wood River West Ash Disposal Pond Dam

Madison County

321995LowNot Available
Eads Lake Dam

Edgar County

151956SignificantNot Available
Eagle Creek Dam

McLean County

111994LowNot Available
Eagle Creek East Dam

McLean County

111998LowNot Available
Eagle Ridge East Pond Dam

Jo Daviess County

251996LowNot Available
Eagle Ridge West Pond Dam

Jo Daviess County

661997LowNot Available
East Branch Fargo Creek Dam

Lee County

311997HighNot Available
East Fork Lake Dam

Richland County

841972HighNot Available
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Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.