Edwards Lake Dam

TRIB MINERAL CREEK,GREEN CREEK· Henry, Illinois· Built 1974· Earth· 34 ft tall
Significant Hazard Recreation Private

Key Takeaway

Edwards Lake Dam is classified as significant hazard in Illinois. It was completed in 1974 and is 52 years old. Its primary use is recreation. Significant hazard means failure could cause economic or environmental damage. Learn more.

Physical Details

Dam Height 34 ft (taller than 73.9% in IL)
Dam Length225 ft
Dam TypeEarth
Max Storage85 acre-ft
Normal Storage61 acre-ft
Year Completed1974 (52 years old)
NID IDIL01144

Safety Information

Significant Hazard

No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities.

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

Emergency Action Plan: No
Last Inspection: June 1, 2018
State Regulated: Yes
Regulatory Agency: IDNR

Ownership

EDWARDS READY MIX COMPANY

Private

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Edwards Lake Dam?

Edwards Lake Dam is classified as Significant Hazard. No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.

Who owns and operates Edwards Lake Dam?

Edwards Lake Dam is owned by EDWARDS READY MIX COMPANY (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Edwards Lake Dam built?

Edwards Lake Dam was completed in 1974, making it 52 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 Edwards Lake Dam?

Edwards Lake 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 Edwards Lake Dam?

Edwards Lake Dam has a dam height of 34 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 Edwards Lake Dam last inspected?

Edwards Lake Dam was last inspected on June 1, 2018. 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.