The River Blyth begins at its source near Laxfield, flowing through  and it reaches a tidal estuary between Southwold and Walberswick on the North Sea coast.

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The Blyth is the focus on a river restoration project being led by Suffolk Wildlife Trust. There is more information on the project and this beautiful river here. 

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The Blyth sits within the Suffolk Coastal operational catchment area, for which the Environment Agency's Catchment Data Explorer sheet is here.