We found excellent hardware stores between Edmonton and the mountains. They even had my rare (at the time)
propane/butane fuel canisters for the camping stove.
As you drive from Edmonton to Jasper you will see the mountains:
Medicine Lake. Water flows into this lake; but no surface water flows out;
ie all of the water leaves the lake thru cracks in the rock underneath the
lake.
Here is the view from the campground we stayed in (south of Jasper)