Coho Salmon Firing Near Duluth as MN Lakes Shift to Summer Mode

What's Biting

What's Next

With Coho Salmon running "very hot" near Duluth per the MN DNR Lake Superior Summer Fishing June 4 report, the North Shore deserves priority this weekend. Surface water temps along the Lower Shore from Duluth to Two Harbors were ranging 35-50°F — cold conditions that keep baitfish suspended relatively high in the water column. The proven stick-bait-at-5-10-feet pattern in 80-140 feet of water should hold as long as surface temps remain cool. Watch for warming surface conditions as air temperatures climb through mid-June; if the Lower Shore pushes above 50°F consistently, the trolling depth will likely need adjustment to follow fish deeper.

Lake Trout action was described as "good" that same week, with bright spoons trolled 40-80 feet down in 70-140 feet of water producing steady results. Jigging plastics near offshore structure is the alternative presentation worth having rigged. Today's last quarter moon creates lower-light conditions at dawn and dusk that typically sharpen predator bite windows on clear, open water like Lake Superior. Early morning starts — pre-sunrise to 9 AM — are the priority window for both coho and lake trout before midday boat traffic picks up.

For North Woods inland lakes, walleye are settling into their post-spawn pattern. Fishing the Midwest's current "Work the Weedline" piece highlights outside weed edges as the primary summer structure to key on — find the first hard breaks of emerging vegetation in 8-15 feet of water and work them with a jig tipped with a minnow or a live-crawler Lindy rig. Last quarter moon conditions favor evening through early-morning walleye feeds along those structural transitions.

Twin Cities river anglers are working around elevated conditions. The Mississippi at St. Paul is at 10,900 cfs (USGS gauge 05331000) and the Rum River near St. Francis is at 5,090 cfs (USGS gauge 05288500) — high enough to displace fish from main-channel feeding lanes. Productive water right now is the quiet stuff: eddy pockets below wingdams, inside bends, and deep holes just downstream of bridge pilings where walleye and smallmouth concentrate away from the current push. As runoff tapers into the back half of June, expect clarity to improve and fish to spread into standard structure — a better picture likely heading into late June.

Context

Early June in Minnesota is a classic transition month. The spring spawning rush — walleye in late April, northern pike and crappie through May — has concluded, and fish are dispersing from spawning shallows into summer holding areas. The MN DNR North Shore Fishing Report's "Final Streams Report for Spring 2026" on May 21 noted steelhead spawning was still underway but angling pressure had already shifted to inland lakes, a pattern consistent with typical Minnesota timing. Earlier reports in that series documented water temperatures near 41°F on North Shore tributaries in mid-May, suggesting a cool, drawn-out spring in 2026 that likely pushed the steelhead run later than average.

For Lake Superior, Coho Salmon action described as "very hot" in the first week of June is a strong result on the historical calendar. The surface temperature range of 35-50°F along the Lower Shore is cold even for early June on a Great Lake, which may be extending the near-surface trolling window by keeping fish from pushing to deeper, warmer thermal layers. Historically, the Lake Superior coho bite near Duluth peaks from May into early July — we're squarely in that productive window right now.

On the river gauges, the Mississippi at St. Paul at 10,900 cfs and the Rum River at 5,090 cfs reflect late-spring discharge levels consistent with normal snowmelt and June rain patterns in Minnesota. No historical gauge benchmarks are available in this data set for direct year-over-year comparison. As a general seasonal reference, Twin Cities river fishing typically improves noticeably once the Mississippi recedes below roughly 8,000-9,000 cfs and clarity returns — a threshold the river may approach by late June if the wet pattern eases.