Bighorn River Report: Steady Flows, Solid Rainbows, and Long Evening Bites

Name’s Artificial Lure, checking in with your Big Horn country fishing report out of the Bighorn River near Fort Smith and the Big Horn, Montana area. We don’t worry about tides out here—this is tailwater country below Yellowtail Dam—so flows and weather matter most. Flows this week have been running on the moderate side and pretty steady, keeping the river clear enough with a light green tint. That classic Bighorn look means good visibility on the flats and just enough color along the banks to let you get close to fish. Overnight we’ve had cool temps in the 40s, climbing into the upper 60s to low 70s by midafternoon with light west–northwest winds around 5–10 mph. Skies have been partly cloudy, giving fish that perfect mix of sun and shade. Sunrise is right around a quarter after five, with sunset a little after nine, so you’ve got a long window of low-light feeding on both ends of the day. Fish activity has picked up nicely. Mornings have seen solid nymph bites in the deeper runs and inside seams, then a bump in surface action late afternoon into evening. Recent reports from local guides and shop talk in Fort Smith say rainbows have been the main players, with plenty of 14–18 inch fish and enough 18–20s to keep you honest. Browns are still there, a bit moodier, but some thick 19–21 inch fish have come out of the heavier seams and undercut banks. Anglers are commonly putting a dozen to twenty fish in the net on good half‑day floats when they stay on the right drift and adjust depth. On the bug front, midges and little blue‑wing olives have been steady, with a mix of tan and olive sowbugs still doing heavy lifting. There have been pockets of caddis activity toward evening on softer edges and back eddies. Nymphing with size 16–20 baetis patterns, black or red midges, and classic Bighorn sowbugs in grey or tan has been the most reliable producer. Trail a smaller midge or baetis behind a sowbug and you’re in business. If you like to throw hardware or bait, small spoons and spinners in silver or gold with a touch of red have been turning rainbows in the deeper bends, especially when you tick bottom now and then. For bait, nightcrawlers drifted just off the bottom and well‑presented leeches or minnows where legal have taken some nicer browns. Keep leader light but not silly—4X or 5X for flies, 6–8 lb mono or fluoro for gear—and don’t be afraid to bump weight up or down until you’re just tapping rocks. Hot spots to keep in mind: the stretch from Afterbay down through 3‑Mile remains a go‑to, with consistent seams and plenty of holding water. The side channels and shelves below 3‑Mile, especially those softer inside turns with knee‑to‑thigh‑deep water, have been sneaky good. Farther down, the water around Bighorn Access has produced some of those better browns on streamers and bigger nymph rigs, particularly when the wind ripples the surface. Streamer folks should run smaller patterns—thin olive, black, or rust sculpin styles, or sparse buggers—on a slow swing or short strip. The big “meat” still moves a fish now and then, but the bite’s been more consistent on those slimmer profiles, especially in the shaded banks in early and late light. Overall, conditions are quietly excellent: stable flows, cool clear water, long days, and trout that are eating if you put it in front of them and stay patient on your drift. Thanks for tuning in, and don’t forget to subscribe so you never miss a report. This has been a quiet please production, for more check out quiet please dot ai. Great deals on fishing gear https://amzn.to/44gt1Pn