Help reduce flood risk in the Hawkesbury-Nepean Valley.

The Hawkesbury-Nepean Valley (the Valley) is one of the highest-risk floodplains in Australia, flooding 8 times since 2020.

The NSW Reconstruction Authority is working alongside other NSW Government agencies, local councils and the community to develop a high-priority Disaster Adaptation Plan (DAP) to reduce flood risk in the Valley. We’re giving everyone working or living in the floodplain the opportunity to be involved in this important work.

There is no single solution to reduce the impact of floods so the Hawkesbury-Nepean Valley DAP will include a range of measures to reduce risk where we can and, importantly, adapt where we can’t. Options being investigated include mitigation infrastructure such as levees, improvements to evacuation roads, and ways to better prepare the community.

We recently completed a new Flood Study for the Hawkesbury-Nepean River which provides the most reliable information on how riverine floods impact the Valley between Wallacia in the south and Brooklyn in the north.

The Study is a key input for the DAP and supports decision-making on emergency management, risk reduction and mitigation, land use planning, and infrastructure investment such as road upgrades in one of Australia’s highest flood risk areas.