You can find color in about any river if you pick the right places. I've panned some out of the Old Man and Little Bow just for fun for a bit flour, generally it's a lot of work for very little in AB. A old acquaintance used to run demo's of his equipment on the NorthSask River, and there always seemd to be more up your way. It you really want to get your feet wet and have some fun head out to Fort Steel, it's a great place, lots of history, it great for the family and you're bound to find some gold. Here's a couple hrs hand work from around there
it's always fun looking, I'd do it for a living if I could.