Hawthorne Hills Dam

TRIB EAST MOONEY CR· Madison, Illinois· Earth· 21 ft tall
High Hazard Recreation Private

Key Takeaway

Hawthorne Hills Dam is classified as high hazard in Illinois. Its primary use is recreation. High hazard means loss of life is likely if the dam fails — it does not indicate the dam's current condition. Learn more.

Physical Details

Dam Height 21 ft (taller than 32.8% in IL)
Dam Length1,200 ft
Dam TypeEarth
Max Storage48 acre-ft
Normal Storage14 acre-ft
Surface Area4 acres
Drainage Area0 sq mi
Max Discharge514 cfs
NID IDIL50702

Safety Information

High Hazard

Loss of human life is likely if the dam fails.

Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?

Emergency Action Plan: No
Last Inspection: June 8, 2020
State Regulated: Yes
Regulatory Agency: IDNR

Ownership

HAWTHORNE HILLS DEVELOPMENT, LLC

Private

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Lakewood Subdivision Lake 3 Dam

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Lakewood Subdivision Lake 2 Dam

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Lakewood Subdivision Lake 1 Dam

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Ginger Lake Dam

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Gateway Medical Lake Dam

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Schon Park Dam

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Rogenski Lake Dam

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Frequently Asked Questions

What is the hazard classification of Hawthorne Hills Dam?

Hawthorne Hills Dam is classified as High Hazard. Loss of human life is likely if the dam fails. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.

Who owns and operates Hawthorne Hills Dam?

Hawthorne Hills Dam is owned by HAWTHORNE HILLS DEVELOPMENT, LLC (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

What is the primary purpose of Hawthorne Hills Dam?

Hawthorne Hills Dam serves the following purposes: Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.

How tall is Hawthorne Hills Dam?

Hawthorne Hills Dam has a dam height of 21 ft. Dam height is measured from the natural streambed at the downstream toe to the top of the dam, and may differ from the visible height.

When was Hawthorne Hills Dam last inspected?

Hawthorne Hills Dam was last inspected on June 8, 2020. Inspection dates indicate when a formal review occurred, not the results of that inspection.

Data from the National Inventory of Dams (NID) maintained by the US Army Corps of Engineers. Dam conditions may have changed since the last update. This site is not affiliated with USACE. Do not use for emergency planning — contact your local dam safety program.