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  1. Project sections
  2. Hydrology and flood management

Hydrology and flood management

We have been assessing the Woolgoolga to Ballina Pacific Highway upgrade’s impact on flood behaviour since 2012.

The Woolgoolga to Ballina upgrade travels through both the Clarence River and Richmond River regional floodplains. There are also several local catchment floodplains in these regions.

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Chatsworth
Contraflow arrangement, Chatsworth

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Read more about hydrology and flooding for the Woolgoolga to Ballina upgrade

2022

  • Hydrological Mitigation Report summary brochure - Glenugie to Devils Pulpit (Clarence River catchment)
  • Hydrological Mitigation Report summary brochure - Devils Pulpit to Richmond River (Richmond River catchment)
  • Hydrological Mitigation Report Glenugie to Devils Pulpit – Clarence River catchment -September 2022
  • Hydrological Mitigation Report Devils Pulpit to Ballina – Richmond River catchment - September 2022

2021

  • Water management community update
  • Video

2017

  • Hydrological Mitigation Report: Glenugie to Devils Pulpit – Clarence River catchment
  • Hydrological Mitigation Report: Devils Pulpit to Ballina – Richmond River catchment

2013

  • Submissions - Preferred Infrastructure Report 

2012

  • Environmental Impact Statement Main Volume 1A: 1-8: Hydrology and Flooding
  • Environmental Impact Statement Working Papers: Parts 1-25: Hydrology and Flooding

 

MAPS

Extent of the Clarence River regional model and local catchment models

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Clarence River regional model and local catchment models
Clarence River regional model and local catchment models

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The local Clarence River catchment floodplains include the Coldstream River and Pillar Valley, Pheasant, Chaffin, Champion, Mororo and Tabbimoble creeks.

Extent of the Richmond River regional model and local catchment models

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Richmond River regional model
Richmond River regional model and local catchment models

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The local Richmond River catchment floodplains include Oakey, Norton’s Gully, Bingal Creek and Randles Creek.

W2B hydrology video

Flood management video:


View video
Richmond River bridge

Community Survey: Pacific Highway 2022 floods - Survey now closed.

Want to discuss? Contact the project team on 1800 778 900 or email pacific.highway@transport.nsw.gov.au

Closed.

Updates & announcements

Hydrological Mitigation Report summary - Glenugie to Devils Pulpit (Clarence catchment) September 2022
Hydrological Mitigation Report summary - Devils Pulpit to Ballina (Richmond Catchment) September 2022
Woolgoolga to Ballina Pacific Highway upgrade Hydrological Mitigation Report Glenugie to Devils Pulpit (Clarence River catchment)
Woolgoolga to Ballina Pacific Highway upgrade Hydrological Mitigation Report Devils Pulpit to Ballina (Richmond River catchment)
Document library

Phone or email us

For further information about this project contact us on
1800 778 900
pacific.highway@transport.nsw.gov.au
PO Box 546 Grafton NSW 2460
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