Another way to get there if you cross from Chaudi?re bridge or Du Portage bridge:
Go on Alexandre-T?ch? BLV in Hull, go west towards Aylmer. After you pass the University of l'Outouais, go down the hill, still on Alexandre-T?ch?, at the Subway along the way, turn immediately left and go straight to the end of the road, where you will have to stop at the river. There is a statue in front of the river and the wave is just below where yuo can see it.
Hope this helps too,
Paul