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Zebra mussels, an invasive species that continue to threaten Minnesota lakes, are pictured next a U.S. quarter in this undated photo. Tribune photo

Citizen discovers what is thought to be zebra mussel in Lake Minnewaska

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news Willmar, 56201
Willmar Minnesota 2208 Trott Ave. SW / P.O. Box 839 56201

GLENWOOD -- The Minnesota Department of Natural Resources is investigating a report that a zebra mussel was found in Lake Minnewaska in Pope County near Glenwood.

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A citizen reported finding what appears to be an adult zebra mussel. It was attached to the metal portion of a boat seat mount that was submerged in 4 feet of water. The man was removing trash blown into the lake from a severe storm last summer.

A DNR snorkeling team conducted a shoreline survey Wednesday but did not find any additional zebra mussels around the site where the boat seat mount was found.

Additional searches are underway reaching outward from the site, according to the DNR.

If confirmed, it would represent the first zebra mussel infestation in Pope County.

It also increases concerns in Kandiyohi County about the risks of infestation due to its proximity and a shared watershed.

Lake Minnewaska is part of the Chippewa River watershed. Other lakes in the watershed include the Norway, Florida, Games and Andrew chain of lakes in Kandiyohi County; Emily and Reno Lakes in Pope County; and Chippewa Lake in Douglas County.

Lake Minnewaska is one of west central Minnesota's most popular lakes for boating and fishing.

The DNR will continue to look for zebra mussels by working outward from "ground zero,'' according to Nathan Olson, aquatic invasive species specialist with the department in Fergus Falls.

If zebra mussels are not immediately confirmed, more thorough surveys will be conducted this fall when boat lifts and docks, which sit in the water for extended periods and give adult zebra mussels a greater opportunity to attach themselves, are pulled from the water.

If confirmed, the DNR will designate Minnewaska as an infested water and educational and enforcement efforts to limit the spread of invasive species will increase at the lake. Boaters can also expect an increased presence of decontamination units and crews.

Minnesota law prohibits the possession or transport of any aquatic invasive species in the state. Invasives include, but are not limited to, zebra mussels, Eurasian watermilfoil and spiny waterfleas. Boaters and anglers need to continue to take extra precautions when using this popular lake as zebra mussels could pose risks for other waters.

Boaters are reminded that they are required by law to:

Remove aquatic plants, zebra mussels and other prohibited species from boats, trailers and equipment before transporting from any water access.

Drain all water from bilge, livewell, motor, ballast tanks, and portable bait containers before leaving water accesses or shoreline property.

Remove the drain plug, open water draining devises, and drain bilges and live wells; the drain plug must be removed or open when transporting a boat on public roads.

It is also recommended that people spray or rinse boats with high pressure and/or hot water, or let them dry thoroughly for five days before transporting to another body of water.

Boaters are also reminded of the new law that went into effect July 1 regarding boat lifts and docks: A boat lift, dock, swim raft, or associated equipment that has been removed from any water body may not be placed in another water body until a minimum of 21 days have passed.

More information about aquatic invasive species is available on DNR website at: www.dnr.state.mn.us/invasives/index_aquatic.html.

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