Demolish inlet's dam after storm (9)
I believe the answer is:
dismantle
'demolish' is the definition.
(I've seen this before)
'inlet's dam after storm' is the wordplay.
'after storm' indicates anagramming the letters.
'inlets'+'dam'='inletsdam'
'inletsdam' is an anagram of 'DISMANTLE'.
(Other definitions for dismantle that I've seen before include "Strip down" , "Take to pieces" , "Take apart" , "Undo" , "To demolish" .)