With the close of the Yellowstone River drainage waters in Montana, there is a chance that the same could happen to the river in the Park. The Park is extremely protective of its natural resources, and rightfully so. We will watch this situation, and you can do the same by going to the Yellowstone Park web site. Presenting terrestrial patterns brings the best chance for action on almost all Park streams this time of year. The fastest action on still waters will be enjoyed the most on such as Beula and Riddle Lakes where gulpers work until the wind comes up. Then switching to small bead head nymph or leech patterns takes over as being most effective.