Lake trout hold steady on Superior as salmon fill out North Shore trolls

What's biting

What's next

Over the next 2-3 days, look for surface temperatures on Lake Superior to keep the same wide spread the DNR has logged all summer — cooler pockets near Two Harbors in the 40s and upper-50s near Duluth, shifting with wind direction. Southwest winds have repeatedly pushed warm surface water offshore and pulled cooler water up along the Duluth shoreline (noted in the DNR's July 16 report), so a wind shift this week could again move the thermocline and change where trollers mark fish. Anglers working spoons, stick baits, and flasher flies 30-80 feet down in 100-150 feet of water should keep finding lake trout and coho in that band; if the pattern from late July holds, chinook will likely stay a bonus catch rather than a target — the DNR's reports have consistently logged them as "a few" fish per outing versus steadier numbers of trout and coho.

On the inland lakes around the Twin Cities and North Woods, early August typically means fish are fully post-spawn and pushed toward their deepest summer positions of the year. Fishing the Midwest notes that forward-facing sonar has upended the old assumption that walleye sit tight to bottom or structure, with more anglers now finding suspended fish well off classic spots — that technique shift should keep paying off through the next few weeks as water temperatures peak. Tactical Bassin's national August notes (not MN-specific, but consistent with typical late-summer bass behavior here) point to bass sitting as deep as they get all year during this stretch.

The Last Quarter moon favors low-light feeding windows, so early morning and dusk trips should outproduce the middle of the day as August heat builds. Weekend anglers heading to the North Shore should watch for the DNR's next weekly update before choosing how deep to run lines, since the spread between Duluth and Two Harbors has been shifting week to week. Inland, plan trips around early and late light rather than midday until temperatures ease, and check for any wildfire-smoke air quality advisories like the one the DNR flagged in mid-July before running open water on the lake.

Context

By early August, MN DNR's North Shore reporting has already shifted seasons — the spring stream series covering steelhead spawning, the smelt run, and creel-clerk reports on rivers like the Knife wrapped up as flows dropped through May, and North Shore coverage moved onto Lake Superior itself, where DNR reports have run weekly since. That handoff is typical for the region: steelhead and smelt are a spring window, and by summer the lake's troll fishery for lake trout, coho, and chinook becomes the headline offshore fishery.

One spring event is worth noting as background rather than current news: the DNR's April 30 report described the Knife River jumping from 370 to 4,690 CFS in about seven hours after roughly 2 inches of rain on April 23, a sharp but short-lived spike the DNR treated as a normal post-rain recovery pattern for lower-shore rivers rather than an unusual season overall.

Through July, the pattern the DNR logged on Lake Superior — trout and coho showing consistently, chinook only in small numbers — reads as a fairly typical mid-to-late-summer distribution for the North Shore trolling fishery, though this feed doesn't include prior-year DNR data, so we can't say whether this year's numbers are running ahead of or behind a longer-term average. For inland Twin Cities and North Woods lakes specifically, none of today's sources include a direct current report, so this update leans on the Lake Superior data and general seasonal knowledge rather than a fresh inland read.