Zebra mussels confirmed in three metro-area lakes

(Photo by Brian Peterson)

The Minnesota DNR has confirmed reports of zebra mussels in Bald Eagle Lake and Lake Johanna in Ramsey County and Lake Isabelle in Dakota County.

As part of the lake association’s zebra mussel monitoring program, one juvenile zebra mussel was found on a settlement sampler on the south side of Bald Eagle Lake. Settlement samplers are solid surfaces placed in the water that people can regularly check for attached zebra mussels.

An early detection survey by a county consultant on Lake Johanna revealed one large adult zebra mussel near the public access.

During Saturday’s University of Minnesota Extension “Starry Trek” search day, a trained detector found three zebra mussels attached to the fishing pier on Lake Isabelle.

The DNR is conducting follow-up surveys of all three lakes to determine whether zebra mussels are distributed more broadly and assess whether there are treatment options. Early detection increases the potential for treatment and helps to prevent spread to other lakes.

Zebra mussels can compete with native species for food and habitat, cut the feet of swimmers, reduce the performance of boat motors, and cause expensive damage to water intake pipes.

People should contact an area DNR aquatic invasive species specialist if they think they have found zebra mussels or any other invasive species.

More information is available at mndnr.gov/ais.

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