River not going just around the corner (11)
I believe the answer is:
forthcoming
'just around the corner' is the definition.
(thesaurus)
'river not going' is the wordplay.
'river' becomes 'forth' (I've seen this before).
'not going' becomes 'coming' ('come' is the opposite to 'go').
'forth'+'coming'='FORTHCOMING'
(Other definitions for forthcoming that I've seen before include "Approaching" , "Communicative" .)