Heavy overcast holding through the day, with a light chop building from the S with the glass slipping lower. The fish at Grand Portage Lake are likely to sit near the shallows early and the drop later. One clear peak today: the morning. Fish confidently and change only when the bites stop.
The bites are average now
Night
In Wisconsin, Grand Portage Lake belongs to Iron County. The surface lies 1,581 feet up. Surface area is around 148 acres, which gives you real water without needing a boat. The bank runs about 3.0 miles all the way round, so one visit can cover most of it. Size puts it in the front rank of our Iron County list. Nearest town is Lac du Flambeau, 16 miles off. Hurley lies 20 miles off, Ironwood another 20 miles. It sits well inside its county, with no border complications.
Depth is not on record here, which means reading the ground instead. A soft bed grows weed late into autumn, which keeps fish shallow. Weed, then depth: that is the order to fish a water of this kind. Records held for Iron County cover walleye, northern pike, yellow perch and muskellunge. The county list is broader than any single water. At Grand Portage Lake the first feature you find is worth twenty minutes.
Climate records put July near 65°F and January near 10°F. A solid cap is the normal state through winter. The lid usually sets by midwinter and gives way around mid April. Climate figures give an open season running mid April to late November. The shoulder weeks of the open season are the productive ones. Time your trip to Grand Portage Lake by conditions rather than dates.
Our records carry no access rule either way. This is a natural basin, not a dammed one. You can launch: the ramp is half a mile away. The nearest mapped parking is half a mile away, so the last stretch is on foot. Local rules can differ across the county line, so check where you stand. Some water is controlled locally without a sign saying so. San Domingo Lake sits 0.7 miles off and takes the overflow. Rules at Grand Portage Lake are worth checking on the day.
75%
The bites are average now
| 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 |
| 1.6 | 2 | 1.9 | 2.5 | 2.1 | 2 | 2.6 | 3.7 | 3.9 | 5.2 | 5.9 | 8.6 | 11.2 | 10.9 | 6.8 | 10 | 10.1 | 9.8 | 10.8 | 7.2 | 6.2 | 9.4 | 10.6 | 10.8 |
| 35° | 34° | 34° | 35° | 35° | 36° | 36° | 38° | 42° | 46° | 49° | 52° | 55° | 55° | 54° | 56° | 56° | 56° | 54° | 52° | 52° | 51° | 51° | 51° |
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0.1 | 0.1 | 0.1 |
| 30.29 | 30.29 | 30.28 | 30.28 | 30.28 | 30.28 | 30.28 | 30.26 | 30.25 | 30.23 | 30.22 | 30.19 | 30.16 | 30.13 | 30.11 | 30.09 | 30.06 | 30.03 | 30.01 | 30.01 | 30.02 | 30.01 | 29.98 | 29.97 |
| 89 | 90 | 92 | 93 | 93 | 93 | 92 | 90 | 90 | 81 | 73 | 64 | 59 | 58 | 68 | 64 | 61 | 64 | 68 | 82 | 86 | 89 | 91 | 92 |
Sam
AI Fishing Assistant for Grand Portage Lake
Morning
Afternoon
Evening
Best bite time
Best bite time
Best bite time
Best bite time
Best bite time
Best bite time
Best bite time