Alpine lakes eh?? My favorite lake is up there. Skykomish, Wa, called Big Heart Lake. I don't know the trail #.
From the trail head you hike past Trout Lake and then Copper Lake, then straight up the mountain to (very) Little Heart and then Big Heart. If you feel like bush whacking, there is an old lake called Agatha I think too, but its surrounded by shear cliffs on the North??? side so we couldn't get to it.