Waterway constructed from angelica-tree? Get lost! (4,5)

I believe the answer is:

erie canal

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'waterway' is the definition.
(I know that Erie Canal is a canal)

'from angelica-tree? get lost' is the wordplay.
'from' is an anagram indicator (from the letters).
'lost' suggests deleting specific letters.
'angelica'+'tree'='angelicatree'
'angelicatree' with 'get' removed is 'anlicaree'.
'anlicaree' with letters rearranged gives 'ERIE CANAL'.

'constructed' acts as a link.
This may not be correct. It may belong to another bit of the clue.

Can you help me to learn more?

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

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