The Minnesota Department of Natural Resources has confirmed the presence of zebra mussels in Rice Lake, located partially in Maple Grove, Hennepin County. A Rice Lake property owner contacted the DNR after finding zebra mussels attached to a settlement sampler fixed to their dock. Another lake resident in a different location also reported zebra mussels on a settlement sampler. DNR staff found zebra mussels on rocks in the water near these properties.
The Minnesota Department of Natural Resources has confirmed the presence of zebra mussels in Clear Lake, near Forest Lake in Washington County. Rice Creek Watershed District staff contacted the DNR after a lake resident reported a zebra mussel on their dock on the west side of the lake. Another resident in the same area subsequently reported a zebra mussel on their dock. More zebra mussels were found by the DNR during shoreline searches in the same area as the two residents’ docks.
The Minnesota Department of Natural Resources has confirmed the presence of zebra mussels in Potato Lake, near Park Rapids in Hubbard County. A lake property owner contacted the DNR after a lake service provider found a zebra mussel on a boat lift they were removing for the season from Potato Lake. DNR and Hubbard County staff and Potato Lake Association members found five additional zebra mussels at the location of the initial report and two more at another location about 2.5 miles away.
The Minnesota Department of Natural Resources has confirmed the presence of zebra mussels in Bass Lake, near Annandale in Wright County. Bass Lake residents contacted the DNR after finding zebra mussels attached to their docks. DNR invasive species specialists was able to confirm one of these reports, finding a live zebra mussel on a dock in the lake.
Settlement samplers aid in detection and are solid surfaces temporarily placed in the water so people can regularly check for attached zebra mussels.
Several new zebra mussel confirmations in Minnesota lakes in recent years were initially reported by property owners and lake service providers removing docks, boats, and boat lifts at the end of the season. The DNR asks people to carefully check boats and trailers, docks and lifts, and all other water-related equipment for invasive species when removing equipment for seasonal storage.
Remember to also keep docks and boat lifts out of the water for at least 21 days before putting them into another body of water. This is state law.
Whether or not a lake has any invasive species, Minnesota law requires people to:
- Clean watercraft, trailers and equipment to remove aquatic plants and prohibited invasive species.
- Drain all water and leave drain plugs out during transport.
- Dispose of unwanted bait in the trash.
- Never release bait, plants or aquarium pets into Minnesota waters.
- Dry docks, lifts and rafts for 21 days before moving them from one water body to another.
These additional steps reduce the risk of spreading aquatic invasive species:
- Decontaminate watercraft and equipment – find free stations on the courtesy decontamination page of the DNR website
- Spray watercraft and equipment with high-pressure water or rinse with water if high-pressure water is not available.
- Dry watercraft and equipment for at least five days before using in another water body.
People should contact a Minnesota DNR aquatic invasive species specialist if they think they have found zebra mussels or any other invasive species that was not already known to be in the water body.
More information is available on the aquatic invasive species page of the DNR website.
