I did 2 summers (4 month stints) at Camp Chief Hector near Canmore, Alberta in the Rockies. I was leading 5 day hiking expeditions with groups of 8 14-15 year old boys 1 year, and leading 5 day white water canoe expeditions the following year. Those were 2 of he best (and fittest) summers of my life and I will always remember that time fondly.
Now I imagine that most of the staff have changed since '97 when I was last there but I'd still recommend the place highly.
http://www.ymcacalgary.org/web/Default.aspx?cid=2952&lang=1
I wish I had taken more photos of my time there but here are a few to whet your appetite.
One of my groups on a hiking expedition:
Working the bank with a throw bag at the end of a small rapid on the North Sask river.
Couple of kids running the wave set at the same spot
Quite a big camp as can be seen by the all-staff photo from the 97 season
Any questions, I'd be glad to help where I can.