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Reducing the Impacts of Flooding in the MacDonald River, Colo River, Webbs Creek and Green Creek Catchments

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Have your say on Reducing the Impacts of Flooding in the MacDonald River, Colo River, Webbs Creek and Green Creek Catchments

As part of the Council’s floodplain management program, Council is committed to finding solutions to reduce the risk to life and the social and economic damages of flooding.

Council applied for and received a grant through the NSW Governments’ Floodplain Management Program to undertake a flood study and floodplain risk management study and plan for the Macdonald River, Colo River, Webbs Creek and Greens Creek.

With the completion of this investigation, and the finalisation of the draft Macdonald River, Colo River, Webbs Creek and Greens Creek Flood Study and Floodplain Risk Management Study and Plan, Council is inviting the community and other stakeholders to comment on the draft Study and Plan.

The draft Flood Study has investigated the nature of flooding in the Macdonald River, Colo River, Webbs Creek and Greens Creek catchments, including flood frequency, extent, depth, velocity and hazards.

The draft Floodplain Risk Management Study and Plan has investigated the consequences of flooding on the community and several measures to mitigate flood risks and impacts and provides a discussion in relation to the merits of each option. The measures recommended for inclusion in the Draft Floodplain Risk Management Plan are:

Property Modification Measures
Emergency Response Modification Measures
Land Use Planning and Building Controls
Data Handover to NSW SES
Voluntary Purchase/Voluntary House Raising Scoping Study
Update of Emergency Response Documentation

Flood Warning System Scoping Study

Emergency Response Plan

Flood Warning Signs

Flood Evacuation

Campground Education Campaign

Data Collection Following Flood Events

Improve Flood Immunity of Crossings


The draft Macdonald River, Colo River, Webbs Creek and Greens Creek Flood Study and Floodplain Risk Management Study and Plan and other supporting documentation is on public exhibition for the period Monday 31 March 2025 to Monday 26 May 2025.

A public meeting is being held to answer questions in relation to the draft Flood Study and draft Floodplain Risk Management Study and Plan:

Date: Wednesday 9 April, 2025
Time: 4:00pm to 5:30pm
Location: St Albans School of Arts

Please email council@hawkesbury.nsw.gov.au or call (02) 4560 4564 to register your interest in attending the public meeting.

The draft Flood Study, draft Floodplain Risk Management Study and Plan and other supporting documentation can be viewed during the exhibition period on Council’s online community engagement site www.yourhawkesbury-yoursay.com.au, or between 9:00am to 4:00pm Monday to Friday at Council’s Administration Office, 366 George Street, Windsor.

Written submissions in relation to the draft Flood Study and draft Floodplain Risk Management Study and Plan can be posted to Hawkesbury City Council, PO Box 146, WINDSOR NSW 2756 or emailed to council@hawkesbury.nsw.gov.au.

The last day for the receipt of submissions is Monday 26 May 2025.

Have your say on Reducing the Impacts of Flooding in the MacDonald River, Colo River, Webbs Creek and Green Creek Catchments

As part of the Council’s floodplain management program, Council is committed to finding solutions to reduce the risk to life and the social and economic damages of flooding.

Council applied for and received a grant through the NSW Governments’ Floodplain Management Program to undertake a flood study and floodplain risk management study and plan for the Macdonald River, Colo River, Webbs Creek and Greens Creek.

With the completion of this investigation, and the finalisation of the draft Macdonald River, Colo River, Webbs Creek and Greens Creek Flood Study and Floodplain Risk Management Study and Plan, Council is inviting the community and other stakeholders to comment on the draft Study and Plan.

The draft Flood Study has investigated the nature of flooding in the Macdonald River, Colo River, Webbs Creek and Greens Creek catchments, including flood frequency, extent, depth, velocity and hazards.

The draft Floodplain Risk Management Study and Plan has investigated the consequences of flooding on the community and several measures to mitigate flood risks and impacts and provides a discussion in relation to the merits of each option. The measures recommended for inclusion in the Draft Floodplain Risk Management Plan are:

Property Modification Measures
Emergency Response Modification Measures
Land Use Planning and Building Controls
Data Handover to NSW SES
Voluntary Purchase/Voluntary House Raising Scoping Study
Update of Emergency Response Documentation

Flood Warning System Scoping Study

Emergency Response Plan

Flood Warning Signs

Flood Evacuation

Campground Education Campaign

Data Collection Following Flood Events

Improve Flood Immunity of Crossings


The draft Macdonald River, Colo River, Webbs Creek and Greens Creek Flood Study and Floodplain Risk Management Study and Plan and other supporting documentation is on public exhibition for the period Monday 31 March 2025 to Monday 26 May 2025.

A public meeting is being held to answer questions in relation to the draft Flood Study and draft Floodplain Risk Management Study and Plan:

Date: Wednesday 9 April, 2025
Time: 4:00pm to 5:30pm
Location: St Albans School of Arts

Please email council@hawkesbury.nsw.gov.au or call (02) 4560 4564 to register your interest in attending the public meeting.

The draft Flood Study, draft Floodplain Risk Management Study and Plan and other supporting documentation can be viewed during the exhibition period on Council’s online community engagement site www.yourhawkesbury-yoursay.com.au, or between 9:00am to 4:00pm Monday to Friday at Council’s Administration Office, 366 George Street, Windsor.

Written submissions in relation to the draft Flood Study and draft Floodplain Risk Management Study and Plan can be posted to Hawkesbury City Council, PO Box 146, WINDSOR NSW 2756 or emailed to council@hawkesbury.nsw.gov.au.

The last day for the receipt of submissions is Monday 26 May 2025.

  • Exhibition of draft Macdonald River, Colo River, Webbs Creek and Greens Creek Flood Study and floodplain Risk Management Study and Plan

    Submission Form
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Page last updated: 02 Apr 2025, 12:08 PM