Minor river that burst no dam in Amsterdam (6)

I believe the answer is:

stream

I'm a little stuck... Click here to teach me more about this clue!

'minor river' is the definition.
'stream' can be an answer for 'river' (I've seen this in another clue). I am not certain of the 'minor' bit.

I cannot understand how the rest of the clue works.

Can you help me to learn more?

(Other definitions for stream that I've seen before include "Brook, burn" , "divide pupils into ability groups" , "Flow from master" , "comprising a load of drips?" , "Current - file" .)

I've seen this clue in the Evening Standard.

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