Water map of Great Britain unveiled in bid to understand natural environment

A nationally consistent map of all of Great Britain’s watercourses has been developed in a bid to protect communities from flooding and to improve habitats for wildlife.

The collaboration between the Ordnance Survey (OS), the Environment Agency (EA) and the Scottish Environment Protection Agency (SEPA) has resulted in a new dataset called OS MasterMap Water Network.

The dataset was initially launched in 2015 and as a result, the group says it has made 850,000 improvements to the data which focuses on watercourse connectivity, flow direction, contiguous naming and identified primary flow path.

Now the EA has agreed to start migrating its existing dataset - known as the Detailed River Network - to the OS MasterMap Water Network, which will replace the old dataset that had only covered England.

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