Crossword Genius

Get up river on river (5)

Ross

I believe the answer is:

rouse

'get up' is the definition.
(thesaurus)

'river on river' is the wordplay.
'river' becomes 'r'.
'on' is a charade indicator (letters next to each other).
'river' becomes 'ouse' (Yorkshire river**).
'r'+'ouse'='ROUSE'

(Other definitions for rouse that I've seen before include "Cause to wake up and come alert" , "Disturb" , "Activate, wake up" , "Stir from inactivity" , "cause to wake or to become active" .)

I've seen this clue in The Telegraph.
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