These days needing backing to keep daughter in comfort in depressed area (4,3)
I believe the answer is:
dead sea
'depressed area' is the definition.
I don't understand the rest of the clue.
(Other definitions for dead sea that I've seen before include "At 400 m below seal level, the world's lowest point" , "Didn't win; TV series" , "Disappearing lake" , "Saltwater lake in the Jordan valley" , "Hypersaline lake" .)