What Aronson Island offers and how to fish it

Aronson Island sits in the Menominee River between Michigan's Upper Peninsula and Wisconsin, roughly 20 miles south of Iron Mountain. The island and its surrounding waters hold smallmouth bass, walleye, and northern pike, with seasonal runs of steelhead in the spring. Access is by boat only — there is no bridge or ferry service — and the river here moves slowly enough that a modest outboard or canoe works well. The island itself is undeveloped and open to public use, though the Menominee River is jointly managed by Michigan and Wisconsin, which means regulations from both states apply depending on where you are fishing.

The river bottom around Aronson Island is a mix of sand, gravel, and rock, with deeper holes and current breaks that hold fish year-round. Spring (April through May) brings the best steelhead fishing, when fish move upriver from Lake Michigan. Summer smallmouth fishing peaks in June and July, particularly around the rocky shoreline on the island's east side. Fall walleye fishing can be excellent from September through October, especially at dawn and dusk. Winter ice fishing is possible when the river freezes solid enough, though ice conditions vary and should be checked locally before heading out.

Key Takeaways

  • Aronson Island is accessible only by boat, and you will need a valid Michigan fishing license plus a Wisconsin license if you fish Wisconsin waters of the Menominee River.
  • Smallmouth bass, walleye, and northern pike are the primary species, with steelhead present in spring and early summer.
  • The island's rocky eastern shoreline and the deeper holes south of the island are the most productive fishing areas.
  • Spring steelhead runs (April–May) and fall walleye fishing (September–October) are the peak seasons for this location.
  • Launch sites are limited; the nearest public boat ramps are at Kingsford and Niagara, Wisconsin, both roughly 15 to 20 minutes by water.

Boat access and launch locations

You must launch from either the Michigan or Wisconsin side of the Menominee River. On the Michigan side, the Kingsford area has limited public access; your best option is to check with the Menominee River Outfitters or local marinas in Kingsford for current launch information, as public ramps in the immediate area are not always maintained. On the Wisconsin side, Niagara has a public boat launch on the Menominee River that is more reliably maintained and is the most commonly used access point for fishing around Aronson Island.

The run from Niagara to Aronson Island is roughly 15 to 20 minutes by boat, depending on water level and current. The river is generally slow-moving in this section, but current can pick up after heavy rain or during spring snowmelt. A 15 to 25 horsepower outboard is adequate; many anglers use smaller boats or canoes when the water is calm. Fuel up before leaving the launch — there are no services on the island or in the immediate surrounding area.

Fishing regulations and licensing

Michigan and Wisconsin both issue fishing licenses, and the Menominee River is jointly managed. If you fish from the Michigan side of the river or from Aronson Island itself, you need a Michigan license. If you fish from the Wisconsin side or Wisconsin waters, you need a Wisconsin license. Many anglers carry both to avoid confusion about which side of the river they are on. Daily bag limits, size restrictions, and season dates differ between the two states, so check both the Michigan Department of Natural Resources and Wisconsin Department of Natural Resources websites before your trip.

Steelhead have special regulations on the Menominee River. Michigan allows steelhead fishing year-round in some sections, but the Menominee River has specific seasonal closures and slot limits that change. Wisconsin's steelhead regulations are separate. Contact the Michigan DNR's Iron Mountain office or the Wisconsin DNR's Marinette office for current rules before you fish, especially if you plan to target steelhead in spring.

Smallmouth bass fishing around the island

The rocky shoreline on Aronson Island's east side is the most consistent smallmouth water. Fish hold tight to the rocks in 4 to 12 feet of water, particularly where boulders create shade and current breaks. Casting small crankbaits (2 to 3 inches), soft plastics, and topwater lures in early morning or late evening produces the most strikes. June and July are peak months, when water temperatures are warm and fish are actively feeding.

The deeper holes south of the island, where the river bottom drops to 15 to 20 feet, also hold smallmouth, especially in mid-summer when shallower water warms up. Fish these holes with jigging spoons or drop-shot rigs. Early morning and overcast days are more productive than bright midday sun. Expect fish in the 12 to 18-inch range; larger fish are present but less common.

Walleye and northern pike in fall and winter

Fall walleye fishing (September through October) is strong around Aronson Island, particularly in the deeper holes and along the island's north side where current is slightly faster. Walleye are most active at dawn and dusk; fishing from one hour before sunrise to two hours after is standard practice. Live shiners or minnows under a slip bobber, or jigging with live bait in 12 to 18 feet of water, are the most reliable methods. Expect fish in the 15 to 22-inch range.

Northern pike are present year-round but are most actively fished in fall and early winter. They hunt in shallower water (6 to 10 feet) around weed beds and rocky structure. Larger lures and live bait attract pike; expect fish from 24 to 36 inches. Winter ice fishing for both walleye and pike is possible when ice is at least 4 inches thick, but ice conditions on the Menominee River vary and should be verified with local bait shops or the Wisconsin DNR before heading out.

Spring steelhead runs and timing

Steelhead move into the Menominee River from Lake Michigan starting in March and continuing through May, with peak activity in April and early May. Fish are most concentrated in the lower river sections and around Aronson Island during the first two weeks of April. Spawn-sac presentations, small spoons, and egg-pattern flies are the standard methods. Early morning and low-light conditions are most productive.

Water temperature and flow are the primary factors controlling steelhead activity. Steelhead move upriver most actively when water temperatures are between 38 and 48 degrees Fahrenheit and after a rise in water level from rain or snowmelt. Check the USGS water gauge for the Menominee River at Kingsford before your trip to see if flows are rising or stable. Stable or slightly rising water is ideal; dropping water slows the run.

Weather, water conditions, and seasonal timing

Spring (April–May) is the most reliable season for consistent fishing, with steelhead and early smallmouth activity. Water temperatures range from 45 to 55 degrees Fahrenheit. Summer (June–August) brings warm water and good smallmouth and pike fishing, but afternoon thunderstorms are common and can make the river choppy. Fall (September–October) offers excellent walleye fishing and cooler, more stable weather. Winter ice fishing is possible but requires careful attention to ice thickness and local conditions.

The Menominee River can rise quickly after heavy rain, making boat handling more difficult and changing fish behavior. Check the USGS water gauge before launching. Wind is a factor year-round; the river is relatively sheltered, but strong winds can still make small-boat fishing uncomfortable. Dress in layers regardless of season — water temperatures are cold even in summer, and hypothermia is a real risk if you end up in the water.

Frequently Asked Questions

Do I need both a Michigan and Wisconsin license to fish around Aronson Island?

You need a Michigan license if you fish from Michigan waters or from Aronson Island itself. You need a Wisconsin license if you fish from Wisconsin waters. Many anglers carry both to avoid confusion about which side of the river they are on. Check the current boundary maps on both state DNR websites before your trip.

What is the best time of year to fish Aronson Island?

Spring (April–May) for steelhead, summer (June–July) for smallmouth bass, and fall (September–October) for walleye are the peak seasons. Each offers different species and fishing methods. Winter ice fishing is possible but depends on ice conditions, which vary year to year.

Can I fish from shore on Aronson Island?

Yes, the island is open to public use and shore fishing is allowed. The rocky east side is the most productive area. However, most anglers fish from boats because the deeper holes and current breaks that hold walleye and pike are not accessible from shore.

What size fish can I expect to catch?

Smallmouth bass typically run 12 to 18 inches, with larger fish present but less common. Walleye average 15 to 22 inches. Northern pike range from 24 to 36 inches. Steelhead in spring are usually 24 to 32 inches. These are typical ranges; individual fish vary.

Where is the nearest place to buy bait and tackle?

Kingsford and Niagara both have bait and tackle shops within a few miles of the boat launches. Call ahead to confirm hours and current stock, especially if you are planning a trip outside normal business hours or in winter.