Clyde River Floodplain Risk Management Study & Plan

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Council received grant funding from the Australian Government's Preparing Australian Communities Program – Local Stream to undertake the Clyde River Flood Study and Floodplain Risk Management Study and Plan to investigate the flood risk within the catchment.

The primary study area is the 50km reach of the Clyde River from upstream of the Yadboro River confluence through the localities of Yadboro, Mogood, Morton, Brooman and Currowan to the southern boundary of the Shoalhaven City Council LGA at the confluence with the Currowan River.

This stretch of the Clyde River comprises of large areas of land owned by the NSW National Parks and Wildlife Service (NPWS) and State Forests of NSW, but with private land tenures along the river length. The focus of the flood study is predominantly privately owned land and public roads but investigating the full 50km reach length is necessary to better understand flow times and discharge relationships between different waterway crossings over the Clyde River. The catchment includes properties that quickly, for an extended period, become isolated due to inundation of existing low-level waterway crossings.

This project is being undertaken in accordance with the NSW Flood Prone Land Policy, the NSW Flood Risk Management Manual (2023) and in close collaboration with the NSW State Emergency Services (SES), the NSW Department of Climate Change, Energy, the Environment and Water (DCCEEW), and other agencies and stakeholders as required.

Council has engaged a consultant, Rhelm, to assist with the preparation of the Clyde River Flood Study and Floodplain Risk Management Study and Plan. This study will improve Council’s understanding of flood behaviour and impacts on the community, and better inform management of flood risk in the study area.


Project Objectives

The objective of this study is to improve understanding of flood behaviour and impacts, and better inform management of flood risk in the study area in consideration of the available information, and relevant standards and guidelines. It aims to provide an understanding of flood behaviour and consequences in the study area across the full range of potential flood events from frequent to extreme. It involves the consideration of the local flood history, available collected flood data, and the development of hydrologic and hydraulic models.

The project also allows testing and investigating practical, feasible and economic management measures to treat existing, future and residual flood risk. The Floodplain Risk Management Study will provide a basis for informing the development of a Floodplain Risk Management Plan. The plan will document the decisions on the management of flood risk into the future. The plan will also outline a range of measures to manage existing, future and residual risk effectively and efficiently, using the investigations undertaken as part of the Floodplain Risk Management Study. This includes a prioritised implementation strategy, that details how and when measures can be implemented.



Council received grant funding from the Australian Government's Preparing Australian Communities Program – Local Stream to undertake the Clyde River Flood Study and Floodplain Risk Management Study and Plan to investigate the flood risk within the catchment.

The primary study area is the 50km reach of the Clyde River from upstream of the Yadboro River confluence through the localities of Yadboro, Mogood, Morton, Brooman and Currowan to the southern boundary of the Shoalhaven City Council LGA at the confluence with the Currowan River.

This stretch of the Clyde River comprises of large areas of land owned by the NSW National Parks and Wildlife Service (NPWS) and State Forests of NSW, but with private land tenures along the river length. The focus of the flood study is predominantly privately owned land and public roads but investigating the full 50km reach length is necessary to better understand flow times and discharge relationships between different waterway crossings over the Clyde River. The catchment includes properties that quickly, for an extended period, become isolated due to inundation of existing low-level waterway crossings.

This project is being undertaken in accordance with the NSW Flood Prone Land Policy, the NSW Flood Risk Management Manual (2023) and in close collaboration with the NSW State Emergency Services (SES), the NSW Department of Climate Change, Energy, the Environment and Water (DCCEEW), and other agencies and stakeholders as required.

Council has engaged a consultant, Rhelm, to assist with the preparation of the Clyde River Flood Study and Floodplain Risk Management Study and Plan. This study will improve Council’s understanding of flood behaviour and impacts on the community, and better inform management of flood risk in the study area.


Project Objectives

The objective of this study is to improve understanding of flood behaviour and impacts, and better inform management of flood risk in the study area in consideration of the available information, and relevant standards and guidelines. It aims to provide an understanding of flood behaviour and consequences in the study area across the full range of potential flood events from frequent to extreme. It involves the consideration of the local flood history, available collected flood data, and the development of hydrologic and hydraulic models.

The project also allows testing and investigating practical, feasible and economic management measures to treat existing, future and residual flood risk. The Floodplain Risk Management Study will provide a basis for informing the development of a Floodplain Risk Management Plan. The plan will document the decisions on the management of flood risk into the future. The plan will also outline a range of measures to manage existing, future and residual risk effectively and efficiently, using the investigations undertaken as part of the Floodplain Risk Management Study. This includes a prioritised implementation strategy, that details how and when measures can be implemented.



  • Clyde River Flood Study and Floodplain Risk Management Study & Plan Complete

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    The Clyde River Flood Study and Floodplain Risk Management Study & Plan has been successfully completed.

    Council will seek endorsement from the Shoalhaven Southern Floodplain Risk Management Committee for these reports to be adopted by Council. Following Council adoption, the final Clyde River Flood Study and Floodplain Risk Management Study and Plan reports and associated flood mapping will be made publicly available on Council’s website.

    After these reports have been adopted by Council, Council staff are able to request grant funding from the NSW Government Floodplain Management Program to implement flood risk mitigation measures included in the Plan.

  • Have your say on flood warning improvements.

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    The Wollongong Coast, Shoalhaven and Clyde River flood warning improvement project is underway, and the community is requested to provide feedback.

    The project is led by the NSW Department of Climate Change Energy the Environment and Water in consultation with the Bureau of Meteorology, NSW State Emergency Service, and in consultation with councils within the study area.

    The project scope includes consideration on a priority basis of upgrades to existing gauges, new gauges, and new flood warning service locations where these support the riverine flood warning network. It will also support community awareness of any changes to the flood warning service.

    Initial draft recommendations for improvements to the flood warning network have been developed in the Wollongong Coast, Shoalhaven and Clyde River valleys.

    The community is invited to provide feedback on these draft recommendations. Submissions close Sunday 20th April 2025

    Have your say https://www.mhl.nsw.gov.au/floodstudies/DCCEEWBCD-SouthCoastHome

  • Clyde River Floodplain Risk Management Study & Plan - Update

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    Public exhibition for the draft Clyde River Flood Study and Flood Risk Management Study and Plan has recently closed. Council would like to thank all community members for their contributions to this project.

    Next Steps:

    • The flood investigations will now be finalised based on community feedback.
    • Following endorsement from the Southern Floodplain Risk Management Committee, these documents will be reported to Council for adoption.
    • Council can then work towards the implementation of adopted flood risk mitigation measures included in the Plan.

  • Have Your Say – Clyde River Flood Study and Floodplain Risk Management Plan

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    The Draft Clyde River Flood Study and Floodplain Risk Management Study and Plan (FRMSP) is now on public exhibition until 24 February 2025.

    The study area is a 50km reach of the Clyde River from upstream of the Yadboro River confluence through the localities of Yadboro, Mogood, Morton, Brooman and Currowan to the southern boundary of the Shoalhaven local government area at the confluence with the Currowan River.

    The aim of the upcoming public exhibition and community consultation phase is for Council to seek feedback from the community via an online survey regarding the Draft Clyde River Flood Study and FRMSP so that these comments can be considered prior to finalisation of the study. Importantly, community feedback will be considered when finalising the Clyde River Floodplain Risk Management Plan which will outline adopted flood risk management strategies into the future.

    The following documents can be viewed in the Document Library on this webpage:

    A community drop-in session will be held from 3pm to 6:30pm on Wednesday 12 February at the Ulladulla Civic Centre where the community can meet Council staff, local SES volunteers and consultants working on this project. There are no scheduled presentations, so the community can simply call in at a time that suits them to ask questions and provide feedback.

    Alternatively, should you have any questions on the draft study, or would like to provide further feedback via email, please contact the Floodplain Management Unit floodplain.management@shoalhaven.nsw.gov.au, or call Council on 1300 293 111

    For information on the Hazards Near Me app click here

  • Initial Community Consultation Completed

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    The initial community consultation for the Clyde River Flood Study and Floodplain Risk Management Study and Plan closed on 25 August 2023. Council received a number of completed surveys. This community feedback will now be utilised to complete the draft Clyde River Flood Study and draft Clyde River Floodplain Risk Management Study and Plan.

    Thank you to everyone who participated and shared your local knowledge to improve Council’s understanding of flood behaviour and impacts on the community, and also for providing feedback on potential mitigation options to be considered as part of the Clyde River Floodplain Risk Management Study and Plan.

    We will continue to publish updates here as this project progresses, so keep an eye out for new information this web page. You can subscribe to receive project updates by providing your email address in the ‘Stay Informed’ box (located in the top-right corner of this screen).

  • Have Your Say - Clyde River Flood Study

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    CLOSED: This discussion has concluded.
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    Council has engaged a consultant to undertake a Flood Study and Floodplain Risk Management Study & Plan for the Clyde River catchment.

    This survey seeks to gather your personal experiences and information on historical flood events to help us complete the flood study. Your survey responses will also assist in identifying solutions which are effective for the management of flood risk and are appropriate for the local community and environment.

    Please provide your feedback by completing the Online Survey by 5pm, Sunday 25 August 2023.

    You can also complete the survey, in person, at the drop-in session on Tuesday 8 August 2023 between 3pm and 7pm at the Ulladulla Civic Centre, where you can meet Council staff, local SES volunteers and our consultants working on this project.

Page last updated: 09 Apr 2025, 11:55 AM