The endless streams provide good sensations (7)
I believe the answer is:
thrills
'good sensations' is the definition.
'thrills' can be an answer for 'sensations' (I have seen 'Exciting sensations ' mean 'thrills' so perhaps 'sensations' could also mean 'thrills'). I'm not certain of the 'good' bit.
'the endless streams' is the wordplay.
'endless' means to remove the last letter.
'streams' becomes 'rills' (rill is a kind of stream).
'the' with its last letter taken away is 'th'.
'th'+'rills'='THRILLS'
'provide' is the link.
Can you help me to learn more?
(Other definitions for thrills that I've seen before include "Exciting sensations" , "Hair-raising experiences" , "Excitement" , "Delights" , "Waves of excited feelings" .)