there are alot of lakes in that area you have targeted, depending upon what species of fish you are after; you can get walleye, pike, perch, whitefish, goldeye, burbot, or rainbow trout. as for lodges that stay open all year i don't know; however there are outfitters in the area that i'm sure you can find by doing some research through "travel alberta". and yes there is some pretty good fishing for big walleye on the athabasca river as well. hope this helps.