Dams in LaSalle County, Illinois

18Total Dams
7High Hazard
4Significant

Dam Safety in LaSalle County, Illinois

LaSalle County has 18 dams tracked in the National Inventory of Dams. Of these, 7 are classified as high hazard — meaning failure would probably cause loss of human life. Another 4 carry a significant hazard classification.

The average dam in LaSalle County is 66 years old. The most common purpose is recreation. The tallest dam is Bazzoni Lake Dam at 65 ft.

DamHazardConditionHeight (ft)PurposeYear
Lasalle Co. Nuclear Station Cooling Lake DamHighNot Available43Other1977
Holiday Lake DamHighNot Available41Recreation1965
Lake Kakusha DamHighNot Available29Flood Risk Reduction1981
Northern White Sands DamHighNot Available28Other
Northeast Recreation Area DamHighNot Available27Flood Risk Reduction1988
Lake Mendota DamHighNot Available17Recreation1890
Dayton Estates DamHighNot Available15Recreation1965
Marseilles Lock And DamSignificantNot Available58Navigation1933
Deer Park Lake DamSignificantNot Available55Recreation1910
Starved Rock Lock And DamSignificantNot Available35Navigation1933
Sabic Basins DamSignificantNot Available10Other1960
Bazzoni Lake DamLowNot Available65Recreation1989
Unimin Tailings Pond O DamLowNot Available56Tailings2010
DaytonLowSatisfactory26Navigation1925
Alleman Lake DamLowNot Available26Recreation1975
Saddlewood Estates DamLowNot Available20Recreation1991
Mendota Agri-products Storage Lagoon 5 DamLowNot Available16Other2012
Marseilles Power Canal DamLowNot Available15Hydroelectric1911