All streams have rounded into shape. The Slough Creek-Lamar River-Soda Butte waters are offering action during brown and gray drake activity with good PMD hatches. Drake hatches are over on Fall River Basin streams, but PMD, ant and beetle patterns will bring action. So will attractor patterns in medium sizes. The Firehole River has warmed to levels where larger fish are moving into spring-fed tribs. Likewise, the Madison River within the Park has warmed to offer best fishing in the mornings and evenings. Caddis, spinner falls, ants and beetle patterns work best. The Gallatin River and Grayling Creek are good choices for attractors and sally patterns during the day and caddis patterns late afternoons and evenings.