Canadian clan travelling with Leo in waterway (10,5)

I believe the answer is:

caledonian canal

'waterway' is the definition.
(I've seen this before)

'canadian clan travelling with leo' is the wordplay.
'travelling with' indicates anagramming the letters.
'canadian'+'clan'='canadianclan'
'canadianclan' with its letters anagrammed with 'leo' can make 'CALEDONIAN CANAL'.

'in' is the link.

(Another definition for caledonian canal that I've seen is " Scottish waterway".)

I've seen this clue in The Telegraph.

Want a hint initially instead of a full solution? Install my app