Fishing Report Updated October 15, 2022

This report is valid from mid-October through October.

Upper Big Spring Creek near Lewistown is pumping up some good hatches of BWO, midges, and very strange late-year PMD. We aren’t 100% sure these are PMD, but they might as well be: #16 creamy olive-yellow mayflies with grayish wings. The rise has been best on cloudy days, but we saw some risers even in the sunshine on Thursday. No hatch, nymph with mayfly-style attractors. Downstream of Lewistown, throw streamers for browns. Watch out for redds everywhere!

The Gallatin River is a good bet now, particularly in the Gallatin Canyon where deeper, turbulent water and lots of shade will help counteract the heat and bright sunshine.