Disruption with sands engulfing river (6)
I believe the answer is:
breach
'disruption' is the definition.
(thesaurus)
'sands engulfing river' is the wordplay.
'sands' becomes 'beach' (I've seen this before).
'engulfing' means one lot of letters goes inside another.
'river' becomes 'r' (abbreviation for river).
'beach' placed around 'r' is 'BREACH'.
'with' is the link.
(Other definitions for breach that I've seen before include "Break, an agreement say" , "Violation, maybe of the peace" , "Opening - quarrel" , "Severance" , "Break (in a wall, etc)" .)