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 326350 of 1,008

Dam NameHeight (ft)YearHazardCondition
Patrick Lake Dam

McDonough County

191946LowNot Available
Parks Pond Dam 1

McDonough County

311976LowNot Available
Paragon Lake Dam

Christian County

201949LowNot Available
Panhandle Eastern Waverly Lake Dam

Morgan County

191966LowNot Available
Panama Lake Dam

Montgomery County

181928LowNot Available
Ozee Pond Dam

Gallatin County

161966LowNot Available
Overby Pond Dam 1

Macoupin County

311977LowNot Available
Otter Lake Low Flow Dam

Macoupin County

62008LowNot Available
Ostermeir Pond Dam

Christian County

221970LowNot Available
Orr Pond Dam

Brown County

261971LowNot Available
Orland Park Basin Dam

Cook County

71992LowNot Available
Orchard Lake Galena Boulevard Dam

Kane County

11LowNot Available
Omaha City Reservoir Dam

Gallatin County

221965LowNot Available
Olson Lake Dam

Winnebago County

241991LowNot Available
Old Tom Creek WS Str 25

Henderson County

251956LowNot Available
Old Tom Creek WS Str 24

Henderson County

251955LowNot Available
Old Reservoir Dam

Marion County

171943LowNot Available
Old Plank Park Basin Dam

DuPage County

10LowNot Available
Old Gillespie Lake Dam

Macoupin County

351923LowNot Available
Old Five Lake Dam

Knox County

351945LowNot Available
Old Ben/Mine 24/Sediment and Slurry Dam

Franklin County

301982LowNot Available
Old Altamont Reservoir Dam

Effingham County

241934LowNot Available
O'Daniel Lodge Lake Dam

Jefferson County

191973LowNot Available
O'Daniel Lodge Lake 2 Dam

Jefferson County

321973LowNot Available
Oak Terrrace Golf Course Lake Dam

Shelby County

40LowNot 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.