Canmore it is
This runs down into the town from the Spray Lakes Resevoir, nestled in the pass between the east end of Mt. Rundle and Ha Ling Peak. There's a great, not too hard, hike up from the Canmore Nordic Centre.
They filmed the plane crash scene for the movie
The Edge, starring Anthony Hopkins and Alec Baldwin, in the resevoir.
Game on Sticky!