The floods had little effect on the Highline trail above Canmore on the slopes of Mt Lawrence Grassi. I hiked it today starting at the east connector in the Peaks of Grassi, going west across the top, and down the west connector.
The only evidence I could find of flooding was a minor bit of reconstruction where Stones canyon creek crosses the trail. I didn’t venture over to the east Highline, but I understand the bridge over Three Sisters creek is damaged but still passable.
You could easily spend an entire day exploring all the features which can be accessed from the Highline. At the west end, you could make a small detour and visit the beautiful Grassi lakes.
There’s a spectacular cascading waterfall just off the west connector although it’s difficult to find. What a wonderful way to cool off on a hot day, standing in the spray of the rushing water. On the eastern end of the trail, there’s Three sisters creek and the old quarry and dam. A little further up the creek is the Three sisters waterfall.
Grassi Knob would not be accessible at this time from the north, where you are required to walk in the bed of Ship’s prow creek. The water is flowing too strong to be safe, but it would most likely be do-able from the east Highline.
One feature of this trail which you could appreciate for the next few days while it’s scorching hot, is that the Highline will give you shade for about 90% of the time.