Vasse Diversion Drain Upgrade

The drain will be widened to hold more water for flood protection.

Water Corporation is planning to upgrade the Vasse Diversion Drain to increase flood protection in Busselton. Floods have continued to affect the Busselton community since the drain was built in the 1920’s, and although we have been making smaller modifications to the Busselton drainage system to mitigate flooding, these options have now run out.

The Vasse Diversion Drain starts just North of the Busselton Golf Course (refer to map under Document Library) and extends for around 6.3 km north to the ocean at Geographe Bay. It diverts water from the Vasse & Sabina rivers to prevent them overflowing and flooding Busselton.

In November 2000, State Cabinet accepted a proposal from the Busselton Flood Management Steering Committee to ensure the Busselton community be protected from 1 in 100 year rainfall events. This plan included the construction of large compensating basins and reconstructing the banks of the Vasse Diversion Drain.

Since then, we have been working towards this goal, having completed the construction of three compensating basins and reviews of local drainage needs. We have now determined the essential next step is to increase the capacity of the Vasse Diversion Drain while reconstructing the levee banks.


Have your say

In December, we set up pop-up project information booths. We spoke to over 100 residents to better understand how people use the drain and any concerns they had about construction or eventual changes to the drain, before finalising our design and construction plan.

We listened to this community feedback and now have solutions and strategies to share with you. These can be found under the Document Library .

We shared this plan at our our pop-up project information booths on 22 -23 February 2020 and continued speaking with the community. We will be back with an update on our environmental management plans and the outcomes of our environmental approvals when they are finalised later this year.

Please take a look through the information on this page and use the tabs below to fill out our survey, ask us a question or interact with our map.

Water Corporation is planning to upgrade the Vasse Diversion Drain to increase flood protection in Busselton. Floods have continued to affect the Busselton community since the drain was built in the 1920’s, and although we have been making smaller modifications to the Busselton drainage system to mitigate flooding, these options have now run out.

The Vasse Diversion Drain starts just North of the Busselton Golf Course (refer to map under Document Library) and extends for around 6.3 km north to the ocean at Geographe Bay. It diverts water from the Vasse & Sabina rivers to prevent them overflowing and flooding Busselton.

In November 2000, State Cabinet accepted a proposal from the Busselton Flood Management Steering Committee to ensure the Busselton community be protected from 1 in 100 year rainfall events. This plan included the construction of large compensating basins and reconstructing the banks of the Vasse Diversion Drain.

Since then, we have been working towards this goal, having completed the construction of three compensating basins and reviews of local drainage needs. We have now determined the essential next step is to increase the capacity of the Vasse Diversion Drain while reconstructing the levee banks.


Have your say

In December, we set up pop-up project information booths. We spoke to over 100 residents to better understand how people use the drain and any concerns they had about construction or eventual changes to the drain, before finalising our design and construction plan.

We listened to this community feedback and now have solutions and strategies to share with you. These can be found under the Document Library .

We shared this plan at our our pop-up project information booths on 22 -23 February 2020 and continued speaking with the community. We will be back with an update on our environmental management plans and the outcomes of our environmental approvals when they are finalised later this year.

Please take a look through the information on this page and use the tabs below to fill out our survey, ask us a question or interact with our map.

Vasse Diversion Drain

4 months

This map shows the section of the drain that needs upgrading and does not indicate the full construction footprint, which is yet to be finalised.


You can use this tool to place a pin on the map to show which parts of the drain you use or are meaningful to you (ie, bird-watching, bike riding, favourite place to sit, crossing for school). Do this by clicking the '+' icon on the left. 

This map shows the section of the drain that needs upgrading and does not indicate the full construction footprint, which is yet to be finalised.


You can use this tool to place a pin on the map to show which parts of the drain you use or are meaningful to you (ie, bird-watching, bike riding, favourite place to sit, crossing for school). Do this by clicking the '+' icon on the left.