Moama Major Overland Flood Study

Murray River Council has now finalised work on the Moama Major Overland Flow Flood Study, which is a comprehensive technical investigation of flooding behaviour from local rainfall and runoff in and around Moama. To assist in its development, the team built a rainfall-runoff computer model to better understand areas most at risk from intense storm events, such as those experienced in January 2024 and October 2022.

Unlike flooding from the Murray River, these events involve Major Overland Flow; stormwater runoff making its way through Moama towards the river. Council is responsible for managing this type of flood risk, alongside riverine flood risk.

The study will help guide future flood risk planning, community awareness, emergency management and strategic urban growth.

Your feedback so far

During the Model Development and Validation Stages in late 2025, Council asked residents to provide feedback on the draft model results by comparing them with their recollections and records of past flooding.

Thank you to those who provided input.

June 2026 - Final feedback

Following finalisation of the modelling and community feedback, the final draft Moama Major Overland Flow Flood Study is now on public exhibition.

This final draft document identifies overland flow flood risks and provides updated technical information to support planning and emergency management.

To view the draft document, head to the ‘key documents’ tab on this page.

You can also view the online mapping portal, which shows the following key outputs from the study:

• Overland Flow Peak Flood Depths: The modelled peak flood depths for design events ranging from the 20% Annual Exceedence Probability (AEP) all the way up to the Probable Maximum Flood (PMF). Note that shallow depths of less than 150 mm and isolated inundation areas less than 100 sqm have been removed from the mapped results for clarity.
• Preliminary FPA: The Flood Planning Area (FPA) is the area to which the majority of flood related development controls apply to most types of development. It should be noted that the FPA defined in this study is preliminary and will be subject to review and refinement in a subsequent Flood Risk Management Study and Plan

Make a submission

To make a submission on the draft document or online mapping, head to the submissions tab on this page.

The feedback period closes Sunday 28 June, 2026.

Public information / consultation meeting

There will also be a drop-in session where members of the public can view the documents and mapping and offer any final feedback.

When: Tuesday 16 June 2026 from 5pm to 7pm (drop-in at ay time during this period).

Where: Moama Recreation Reserve Pavilion.

This project is supported by the State Floodplain Management Program, managed by the NSW Department of Climate Change, Energy, Environment and Water (DCCEEW).