Lake In The Hills Dam 1

McHenry County, Illinois (near LAKE IN THE HILLS)

River/Stream: WOODS CREEK

High Hazard

Failure would likely cause loss of life

Key Facts

Dam Type
Earth
Height
40 ft
Dam Length
780 ft
Reservoir Storage
969 acre-ft
Year Completed
1926
Primary Purpose
Recreation
Owner Type
Local Government
Max Discharge
14,000 cfs

Condition Assessment

Not AvailableLast inspected: 2025-10-30

Hazard Classification: High — This describes the potential consequences of dam failure, not the likelihood of failure.

Condition Assessment: Not Available — This describes the current physical condition of the dam based on the most recent inspection.

Location

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Data sourced from the National Inventory of Dams (NID). Information may not reflect the most current status of this dam. Hazard classification reflects potential consequences of failure, not the likelihood of failure or the current condition.