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Zebra Mussel Larvae Detected in Kabetogama, Namakan, and Crane Lake

▸ This article was created with AI assistance

AI Model: Claude Opus 4 by Anthropic

Sources:

View on Minnesota DNR →

AI-generated content may contain errors. Community members are encouraged to verify important details independently.

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Waters close to home are now on the state’s radar. The Minnesota Department of Natural Resources announced in September 2025 that water sampling has turned up small but measurable numbers of zebra mussel larvae (veligers) in Lake Kabetogama, Crane Lake, and Namakan Lake — all waters that border or sit within Voyageurs National Park. Sand Point Lake, connected to Namakan by a wide channel, will also be added to the list.

As a result, all four lakes will be officially designated as infested waters for zebra mussels under Minnesota law. The DNR has not yet confirmed adult zebra mussels in any of these lakes — only the larvae — but their presence suggests reproducing populations are established.

This isn’t entirely new territory for the region. The DNR confirmed zebra mussel veligers in Rainy Lake back in 2021, and adult mussels have not been confirmed there either. The DNR says it’s not unusual for large lakes to show confirmed veligers without adults turning up yet — but once veligers are found, monitoring intensifies.

What This Means for Boaters and Anglers

Whether a lake is listed as infested or not, Minnesota law requires all boaters and anglers to follow these steps every time they leave a water body:

  • Clean watercraft and trailers of aquatic plants and prohibited invasive species
  • Drain all water by removing drain plugs and keeping them out during transport
  • Dispose of unwanted bait in the trash — never dump it in the water

Because zebra mussels and other invasive species can be tiny and hard to spot, the DNR recommends taking extra precautions before moving a boat to another lake:

  • Spray with high-pressure water
  • Rinse with very hot water — 120°F for at least two minutes, or 140°F for at least 10 seconds
  • Dry the boat and trailer for at least five days

Why It Matters

Zebra mussels aren’t just a nuisance — they can cause real harm. They compete with native fish and wildlife for food, their sharp shells can cut the feet of swimmers, and they can clog water intake pipes and damage boat motors.

If you think you’ve spotted zebra mussels or another aquatic invasive species somewhere they haven’t been reported, note the exact location, take a photo or collect a specimen, and contact a Minnesota DNR aquatic invasive species specialist at 888-646-6367.

View on MN DNR Website →

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Lake Kabetogama

Lake Kabetogama covers about 25,760 acres on the south side of Voyageurs National Park, among the Midwest's best walleye fisheries.

About Lake Kabetogama

  • About 25,760 acres on the south side of the Kabetogama Peninsula
  • Among the Midwest’s best walleye fisheries
  • Part of the 65-mile interconnecting Voyageur waterway
  • Gateway community of Kabetogama on the south shore
  • International Dark Sky Park

Tucked along the south side of the Kabetogama Peninsula, Lake Kabetogama is one of the four big lakes that make up the heart of Voyageurs National Park. Covering about 25,760 acres of open water, bays, and pine-studded islands, it draws anglers, paddlers, and houseboaters who want a slower kind of north-country day.

The gateway community of... Read more

Location

Location Marker
Lake Kabetogama — Voyageurs National Park
48.4394, -93.0200
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Crane Lake

Crane Lake is the eastern gateway to Voyageurs National Park, linked by the 65-mile Voyageur waterway to Namakan, Sand Point, and Lake Kabetogama.

About Crane Lake

  • Eastern gateway to Voyageurs National Park (located in St. Louis County)
  • Connects via the 65-mile Voyageur waterway to Namakan, Sand Point, and Kabetogama
  • Crane Lake Voyageur Monument honors the French-Canadian voyageurs
  • Snowmobile trails link to the Ash River and Kabetogama areas in winter

Crane Lake sits at the eastern edge of the region this guide covers, serving as a gateway to Voyageurs National Park. Although the lake lies in St. Louis County, just outside Koochiching County, it has long functioned as a key access point to the waters of Voyageurs and the... Read more

Location

Location Marker
Crane Lake — eastern gateway to Voyageurs National Park
48.2360, -92.4765
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