Derived data product DEA Coastlines
Last updated:18 June 2024
See decades of coastal change
DEA Coastlines combines satellite data with tidal modelling to map the changing location of Australia's coastline since 1988. Resulting annual shorelines and detailed rates of change show how beaches, sandspits, river mouths, and tidal flats have grown and eroded over time.
The product draws on nearly 58,000 independent measurements to ensure accuracy, supported by local councils, state governments, citizen scientists and academia.
DEA Coastlines data accurately maps rates of coastal change and hotspots of erosion and growth at every 30 metres along the entire Australian coastline.
DEA Coastlines interactive map
Visit DEA Maps to get the full interactive map with DEA Coastlines and other DEA products.
Why track changing coastlines?
- Provide new insights to scientists, coastal managers, local communities and policymakers
- Model how coastlines respond to drivers of change, including extreme weather events, sea level rise and urban development
- Prioritise and evaluate impacts of local and regional coastal management decisions
- Support research into how and why coastlines have changed over time
![](https://www.ga.gov.au/__data/assets/image/0020/141536/varieties/1000w.jpg)
Imagery for impact The growing sands of Twilight Cove
Get a snapshot of the stories revealed by DEA Coastlines, including how one remote and spectacular Western Australian beach has grown by more than 500 m since 1988.
Related resources
Join our community
Slack for support
Ask questions of the many data and spatial analysts, developers and scientists managing and experimenting with DEA data
Express your interest
Got a project that needs a big picture? We’re open to collaborative projects with government, industry and communities that serve Australia’s future.
Get our newsletter
Stay informed of new products, seminars and learning opportunities from DEA and our partners