River Blyth, Northumberland

The River Blyth flows eastwards through southern Northumberland into the North Sea at the town of Blyth. It flows through Plessey Woods Country Park. The River Pont is a tributary. The Blyth is 44 km long and the Pont is 28 km.

The tidal limit of the river is at Bebside. The estuary widens from this point eastwards and with the addition of a burn that enters on the northern side (Sleek Burn), it covers an area of 168 hectare.

Ecologists have suggested that a dam on the river at Humford Country Park in Bedlington could be removed to allow for fish migration. The local community have expressed a desire to keep the dam as it is a local beauty spot; they have suggested that a fish passage be built alongside instead.