Greg (fishfreak911) and I are heading up to Idaho and Montana in August of this year. We plan on staying for 3 weeks. The Lamar valley in Yellowstone Park is one place we will hit hard. It looks like it will be a great year up there for fishing. The snow pack is way above normal. Here is a link to the amount of snow in the mountains; most of it has not even started to melt yet. In some of the drainages the snow pack is over 300% of normal.
http://www.wcc.nrcs.usda.gov/cgibin/sno ... l?state=MT
Mark