Poole Harbour

Old maps show us a snap shot of what the coast used to look like

A different coastline from the 1500s

1586 ‘Survey of the Isle of Purbeck’ Ralph Treswell

  • When the last periodof glaciation came to an end the sea levels rose at rates of up to 1.5 metres per year, flooding an ancient river valley to create Poole Harbour.

A diagram of the development of Poole Harbour 10-18,000 BC

This video shows how changes in sea level have shaped the south coast of England over long periods of time


  • Old images and postcards can provide us with historical records of natural and man-made changes to the coast.

    Looking across to present day Sandbanks residents


Sandbanks before present day development