River of North Yorkshire that flows to the Swale to form the Ouse (3)

I believe the answer is:

ure

(Other definitions for ure that I've seen before include "Midge --, singer" , "River of N. Yorkshire" , "Wensleydale river" , "River at Ripon" , "Ripon's river" .)

I've seen this clue in The Mirror.

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