The Minnesota Department of Natural Resources has confirmed the presence of zebra mussels in Eagle Lake, near the City of Big Lake in Sherburne County.
A dead zebra mussel was found at the Eagle Lake public water access in 2021, but no live specimens were found at that time. The DNR continued to annually monitor Eagle Lake for zebra mussels by conducting shoreline searches and water sampling for larvae. Last week, a DNR invasive species specialist found live adult and juvenile zebra mussels attached to the wheel of the Eagle Lake public access dock as it was being removed for the season.
In recent years several of the new zebra mussel populations in Minnesota lakes were first reported by property owners and lake service providers removing docks, boats and boat lifts at the end of the season. The DNR reminds 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.