Area close to bungalow remains flooded (5)
I believe the answer is:
awash
'flooded' is the definition.
('awash' can be a synonym of 'flooded')
'area close to bungalow remains' is the wordplay.
'area' becomes 'a' (maths abbreviation).
'close to' indicates one should take the final letters (the close/ending of).
'remains' becomes 'ash' (I've seen this before).
The last letter of 'bungalow' is 'w'.
'a'+'w'+'ash'='AWASH'
(Other definitions for awash that I've seen before include "becomes flooded" , "Overflowing" , "Deluged" , "Partly under water" , "Flooded; about to sink" .)