Marissa Wwtp Basin Dam

St. Clair, Illinois· Earth·
Significant Hazard Other Local Government

Key Takeaway

Marissa Wwtp Basin 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 TypeEarth
Normal Storage0 acre-ft
NID IDIL50729

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: October 26, 2022
State Regulated: Yes
Regulatory Agency: IDNR

Ownership

VILLAGE OF MARISSA

Local Government

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Marissa Wwtp Basin Dam?

Marissa Wwtp Basin 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 Marissa Wwtp Basin Dam?

Marissa Wwtp Basin Dam is owned by VILLAGE OF MARISSA (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

What is the primary purpose of Marissa Wwtp Basin Dam?

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

When was Marissa Wwtp Basin Dam last inspected?

Marissa Wwtp Basin Dam was last inspected on October 26, 2022. 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.