Baldwin Plant Cooling Lake Dikes

LITTLE DOZA CREEK· St. Clair, Illinois· Built 1968· Earth· 55 ft tall
High Hazard Other Recreation Public Utility

Key Takeaway

Baldwin Plant Cooling Lake Dikes is classified as high hazard in Illinois. It was completed in 1968 and is 58 years old. Its primary use is other. 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 55 ft (taller than 93.6% in IL)
Dam Length38,280 ft
Dam TypeEarth
Max Storage36.3K acre-ft
Normal Storage26.0K acre-ft
Surface Area203 acres
Drainage Area5 sq mi
Max Discharge748 cfs
Year Completed1968 (58 years old)
NID IDIL01086

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: November 17, 2020
State Regulated: Yes
Regulatory Agency: IDNR

Ownership

DYNEGY MIDWEST GENERATION, LLC

Public Utility

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Baldwin Plant Cooling Lake Dikes?

Baldwin Plant Cooling Lake Dikes 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 Baldwin Plant Cooling Lake Dikes?

Baldwin Plant Cooling Lake Dikes is owned by DYNEGY MIDWEST GENERATION, LLC (Public Utility). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Baldwin Plant Cooling Lake Dikes built?

Baldwin Plant Cooling Lake Dikes was completed in 1968, making it 58 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 Baldwin Plant Cooling Lake Dikes?

Baldwin Plant Cooling Lake Dikes serves the following purposes: Other, Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.

How tall is Baldwin Plant Cooling Lake Dikes?

Baldwin Plant Cooling Lake Dikes has a dam height of 55 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 Baldwin Plant Cooling Lake Dikes last inspected?

Baldwin Plant Cooling Lake Dikes was last inspected on November 17, 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.