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 2650 of 1,630

Dam NameHeight (ft)YearHazardCondition
Wold Lake Dam

McHenry County

111965LowNot Available
Windfall Lake Dam

Vermilion County

141964LowNot Available
Wilmor Sportsman Club West Lake Dam

Tazewell County

311954LowNot Available
Wilmor Sportsman Club East Lake Dam

Tazewell County

311954LowNot Available
Wilmington Dam

Will County

121920LowNot Available
Willow Wood Lake Dam

St. Clair County

362003LowNot Available
Willow Lake Estates Dam

Monroe County

171996LowNot Available
Willow Lake Dam

Stephenson County

251974HighNot Available
Willow Higgins Reservoir Dam

Cook County

12SignificantNot Available
Williamsville Lake Dam 1

Sangamon County

231971LowNot Available
Williamson Energy/Pond Creek Mine/Refuse Disposal Facility

Williamson County

88HighNot Available
Williams Lake Dam

Washington County

291968LowNot Available
Willaredt Lake Dam 1

Madison County

261968LowNot Available
Wilkinson Pond Dam

Madison County

371968LowNot Available
Wildwood Lake Estates Dam

St. Clair County

351982SignificantNot Available
Wildwood Lake Dam

Tazewell County

271962LowNot Available
Wildwood Lake Dam

Marshall County

841969HighNot Available
Wildlife Lake Dam

Washington County

301941SignificantNot Available
Wiemers Pond Dam 1

Madison County

251970LowNot Available
Widner Lake Dam

Iroquois County

191965LowNot Available
Wick Pond Dam 1

Madison County

261977UndeterminedNot Available
Whoopie Cat

Hardin County

441977SignificantPoor
Whitley Dam

Schuyler County

30LowNot Available
Whitfield Pond Dam 3

Macoupin County

301956LowNot Available
Whitfield Pond Dam 2

Macoupin County

281954LowNot 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.