Matherville Lagoons Dam

EDWARDS RIVER - OFFSTREAM· Mercer, Illinois· Earth· 9 ft tall
Significant Hazard Other Local Government

Key Takeaway

Matherville Lagoons Dam is classified as significant hazard in Illinois. Its primary use is other. Significant hazard means failure could cause economic or environmental damage. Learn more.

Physical Details

Dam Height 9 ft (taller than 3.9% in IL)
Dam TypeEarth
Max Storage120 acre-ft
Normal Storage100 acre-ft
Year Modified2014
NID IDIL50659

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: Yes
Last Inspection: September 27, 2021
State Regulated: Yes
Regulatory Agency: IDNR

Ownership

VILLAGE OF MATHERVILLE

Local Government

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Matherville Lagoons Dam?

Matherville Lagoons 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 Matherville Lagoons Dam?

Matherville Lagoons Dam is owned by VILLAGE OF MATHERVILLE (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

What is the primary purpose of Matherville Lagoons Dam?

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

How tall is Matherville Lagoons Dam?

Matherville Lagoons Dam has a dam height of 9 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 Matherville Lagoons Dam last inspected?

Matherville Lagoons Dam was last inspected on September 27, 2021. 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.