Bighorn Bliss: Trout Awaken to Epic Spring Fishing on the Steady and Clear Big Horn River

Good morning from Fort Smith, this is Artificial Lure giving you the fishing scoop for April 20, 2025, here on the Big Horn River and the surrounding area. The river’s in fine spring shape today. Flows are running a steady 2240 cfs and the water is nice and clear, with afternoon temps sitting around 48 degrees. We’ve had a stretch of cool nights lately that’s kept the river clean, though there’s still a bit of grass breaking off in spots, so keep that in mind—it should stick around for a couple more weeks. The weather’s finally settled after a breezy patch, with the sun peeking through and comfortable springtime highs expected, making for a great day to be out on the water. Daylight’s getting longer, with sunrise just past 6:15 this morning and sunset a little before 8:10 tonight, so you’ve got plenty of time on the water. Of course, no tidal reports for us inlanders, but that sun’s warmth in the afternoons has been bringing the fish up and getting the bugs hatching. Now, the fish: the Bighorn is living up to its reputation. The trout are waking up hungry after winter. Anglers are reporting “epic” fishing this week, especially in the afternoons, with plenty of healthy browns and rainbows brought to hand. Most folks are picking up numbers on nymph rigs—think scuds, sowbugs, and midges, especially cream or red in sizes 20 to 22, rigged tandem under a strike indicator. The blue-winged olives have started hatching more reliably, and you’ll see some fish taking dries in the softer runs if you keep your eyes peeled. Streamer fans are in luck—white belly sculpins, black and olive matukas, and articulated patterns in size 4 to 6 are pulling fish, especially working the deeper slots and seams. With water this clear, a subtle retrieve is working best. If you’re fishing late, try a Woolly Bugger or a Zonker. For those looking to fish dries, midges and BWOs are the ticket. Look for heads in the afternoons in the back eddies and quieter water. Hot spots right now include the stretch just below Afterbay Dam, where the fish are stacking up in the deep runs, and Three Mile Access, which has been particularly productive for both nymphs and streamers. The lower river is clearing up nicely too, so don’t be afraid to explore down towards Bighorn Access or Mallard’s Landing. In summary: nymphs and streamers lead the charge, with some dry fly action picking up. Scuds, sowbugs, midge larva, and olive or black streamers are the baits of choice right now. Fish are active and the river’s in great shape, so grab your gear and get out there—the bite’s on. Stay safe and tight lines. This is Artificial Lure, signing off from the Bighorn. This content was created in partnership and with the help of Artificial Intelligence AI.