The only current problem with fishing in the park is tourist traffic. Best way to avoid it is to get there early. Yellowstone River above Chittenden Bridge opened to fishing yesterday. We have no reports on fishing there yet, but soon big stoneflies ( already in the canyons below) and then green drakes will bring on activity.
Please avoid fishing the Firehole River below Old Faithful until September. Daytime water temps now get into the seventy degrees F. making playing fish lethal. The Madison and Gibbon ( no salmonids above Virginia Cascade) are also warming up making evenings and early AMs (PMD spinner & caddis life cycle patterns) the best times to fish. The upper Gallatin is shaping up, a bit high but clear, with stoneflies and caddis providing action. Traditional attractor patterns always work well on this stream.
Northeast corner streams are rounding into shape. Slough Creek is a bit high, but clear. Green drakes are beginning with PMDs and yellow sallies providing action there and on other streams. Look for lower section of Soda Butte Creek to become crowded as soon as good fishing arrives. Thunder showers can muddy the Lamar to the point of “you’ll have to wait a day or two.”
Water levels are dropping in all Fall River Basin streams ( Bechler & Fall rivers, Boundary & Mountain Ash Creeks). Terrestrial insect season is around the corner on these streams. PMDs are still around, but in smaller sizes. Beula Lake is offering some of the fastest fishing in the Park. You will need to complete a two and a half mile walk from the Ashton-Flagg Road to enjoy it, but the rewards are Yellowstone cutts with a few up to trophy size. Damselfly life cycle and small leech patterns work well. Soon speckled dun and cinnamon caddis will peak. Pack in a flotation device for best fishing, but wading the inlet and east side gets you into fish.