Crossword Genius

Which river can make rain go red? (3,6)

Ross

I believe the answer is:

rio grande

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'which river' is the definition.
I can't judge whether this defines the answer.

'make rain go red?' is the wordplay.
'make' is an anagram indicator.
'rain'+'go'+'red'='raingored'
'raingored' anagrammed gives 'RIO GRANDE'.

'can' acts as a link.

Can you help me to learn more?

(Other definitions for rio grande that I've seen before include "US-Mexico border river" , "Waterway rising in Colorado" , "River boundary between the US and Mexico" , "Mexico-USA border" , "River flowing between USA and Mexico" .)

I've seen this clue in the Sydney Morning Herald.
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