Early spring trout fishing near Bozeman is improving week by week as rivers transition out of winter mode. Here’s what’s working right now—best time of day, where trout are holding, and the nymph and streamer setups producing on the Gallatin, Madison (upper/lower), and Yellowstone as of March 9, 2026 (5/5).

Low, steady flows out of Libby Dam (4,000 cfs) and mild weather have the Kootenai River fishing very doable heading into early March. With water temps around 40°F, expect limited dry-fly action—but consistent nymphing and slow, deep streamer presentations can still turn up quality fish, especially in softer 5+ foot holding water.

FWP crews are floating seven Montana rivers over the next several weeks for their annual electrofishing “science tour,” collecting trout data and continuing tagging efforts. If you catch a tagged trout on the Beaverhead, Big Hole, Ruby, or Madison, you can help the research—clip the tag, report it online, and you may even qualify for prizes or cash depending on the tag color.

Winter conditions on the Kootenai River are optimal for fishing, with steady low flows and clear waters. Nymphing is the most effective technique, focusing on deep, slow-moving areas for trout.