YNP Report - June 12, 2025

Not much has changed in Yellowstone this week, with the most consistent fishing still found on our western favorites: the Firehole, Madison, and Gibbon Rivers, as well as various stillwaters throughout the Park.
Thanks to slightly cooler and wetter conditions, we’ve been able to extend the window of good fishing on these rivers into another week of June. We're keeping our fingers crossed that the weather continues to cooperate—keeping water temps in check and prolonging the PMD and caddis activity that defines early summer fishing in the Park.
With a chance of clouds in the forecast each day this week, expect the late morning to mid-afternoon window to offer your best shot at PMD hatches and rising fish. On calm, warm mornings, keep an eye out for rusty spinners in sizes #16–20 and egg-laying caddis. Evenings can bring productive fishing with tan caddis (size #16) and the occasional White Miller (size #14) fluttering through riffles and tailouts.
Meanwhile, conditions on the Gardner and Gallatin Rivers are improving steadily. As runoff wraps up, both are becoming increasingly viable for afternoon nymphing or dry fly prospecting with stoneflies or caddis patterns. Things are shaping up quickly here, and the super fun, classic dry fly fishing these rivers are known for is right around the corner.
Up in the northeast corner of the Park, flows on Slough Creek, Soda Butte Creek, and the Lamar River remain high and off-color. These cutthroat classics aren't quite ready yet, but runoff is retreating fast, and we’re optimistic about an earlier-than-usual start to fishing up there this year.
As always, check in with the shop for the latest conditions, fly recs, and river updates—we’re happy to help you stay dialed in.