On September 1, 2026, rain transformed the Yellowstone River, causing muddy conditions but expected clearing later. Flows are at 2,080 CFS, with effective fishing focused on deeper runs and seams. Paradise Valley creeks are productive with small bugs, while Slough Creek offers excellent conditions. Terrestrials remain the most effective bait.

Spring fishing in Yellowstone Valley is thriving as river temperatures approach 50°F, awakening trout. Anglers can target rainbows with nymphs and dry flies, especially in mid-afternoon.