Lake Storey Dam

TRIB SOUTH HENDERSON CREEK· Knox, Illinois· Built 1942· Earth· 53 ft tall
High Hazard Recreation Local Government

Key Takeaway

Lake Storey Dam is classified as high hazard in Illinois. It was completed in 1942 and is 84 years old. 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 53 ft (taller than 93% in IL)
Dam Length770 ft
Dam TypeEarth
Max Storage3.0K acre-ft
Normal Storage1.3K acre-ft
Surface Area109 acres
Drainage Area7 sq mi
Max Discharge33,710 cfs
Year Completed1942 (84 years old)
NID IDIL00420

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: Yes
Last Inspection: September 18, 2020
State Regulated: Yes
Regulatory Agency: IDNR

Ownership

CITY OF GALESBURG

Local Government

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Lake Storey Dam?

Lake Storey 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 Lake Storey Dam?

Lake Storey Dam is owned by CITY OF GALESBURG (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Lake Storey Dam built?

Lake Storey Dam was completed in 1942, making it 84 years old. Many U.S. dams were built between the 1930s and 1970s during a period of major infrastructure investment.

What is the primary purpose of Lake Storey Dam?

Lake Storey 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 Lake Storey Dam?

Lake Storey Dam has a dam height of 53 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 Lake Storey Dam last inspected?

Lake Storey Dam was last inspected on September 18, 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.