Yep, you're there. The river has a name for sure. It's popular with sportsmen and kayakers. It empties into the St. Lawrence.
It's a well known river, not some babbling brook. If you google in the name of the river, you get tons of hits and it's well known as a tourist area, though, not as well known as La Maurice.
But you need that name of that river.
You're almost there though (albeit with about 20 clues.)
GO HERE for the final damn clue I am going to give you all....
http://www.viarail.ca/tourists/en_tour_phot_queb.html