River tours arranged (5)

I believe the answer is:

stour

'river' is the definition.
(East Anglian river)

'tours arranged' is the wordplay.
'arranged' is an anagram indicator.
'tours' is an anagram of 'STOUR'.

(Other definitions for stour that I've seen before include "Essex/Sussex border river" , "River Constable painted" , "River - roust (anag)" , "English river" , "Constable country river" .)

I've seen this clue in the Evening Standard.

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