Wanboro Lake Dam

TRIB BUTTER CREEK· Edwards, Illinois· Built 1977· Earth· 28 ft tall
Significant Hazard Recreation Private

Key Takeaway

Wanboro Lake Dam is classified as significant hazard in Illinois. It was completed in 1977 and is 49 years old. Its primary use is recreation. Significant hazard means failure could cause economic or environmental damage. Learn more.

Physical Details

Dam Height 28 ft (taller than 54.6% in IL)
Dam Length500 ft
Dam TypeEarth
Max Storage183 acre-ft
Normal Storage0 acre-ft
Year Completed1977 (49 years old)
NID IDIL50645

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 7, 2019
State Regulated: Yes
Regulatory Agency: IDNR

Ownership

WANBORO LAKE HOMEOWNERS ASSOCIATION

Private

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Wanboro Lake Dam?

Wanboro 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 Wanboro Lake Dam?

Wanboro Lake Dam is owned by WANBORO LAKE HOMEOWNERS ASSOCIATION (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Wanboro Lake Dam built?

Wanboro Lake Dam was completed in 1977, making it 49 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 Wanboro Lake Dam?

Wanboro 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 Wanboro Lake Dam?

Wanboro Lake Dam has a dam height of 28 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 Wanboro Lake Dam last inspected?

Wanboro Lake Dam was last inspected on June 7, 2019. 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.