We ran it on the 14/7/16 with 50cm at the Pré-Saint-Didier gauge. See comments below.

For the put in after Champex, follow the road on the right side and on the big turn go straight, the road changes side and you can put in wherever you want. The advantage is that you can also scout the river.

Just under the bridge of the put in there is a car or something like this under the water.
After the put in at the end of the first rapid there is a big siphonny boulder take care.
After that, there are many artificial steps, be careful, sometimes it is difficult to take out just before. Also there are some iron bars in the river.