Aquatic Invasive Species (AIS) are introduced to lakes in a variety of ways by humans, animals, waterways and air. AIS are both plant and animal.

MNCOLA, The Minnesota Coalition of Lake Associations, has this to say about AIS. CLICK HERE. 

The DNR gives the following on Invasive Animal. CLICK HERE. 

The DNR gives the following on Invasive Plants. CLICK HERE.

Following are known to Schutz Lake or a significant threat due to surrounding lakes contamination.


Managing Milfoil When you kill off milfoil whether that be by chemical, mechanical devices or ‘scuba weeding’, it is very important to remove the dead and decaying matter so as not to increase the phosphorus levels which encourages algae blooms. Mechanical devices or weeding are desired over chemical treatment for the health of the lake and native plants.


Carp are an invasive species that can harm a lake by stirring up the bottom of the lake, disturbing the settled nutrients which then in turn encourage algae blooms.

Zebra Muscles

Zebra mussels are small, fingernail-sized animals that attach to solid surfaces in water. Adults are 1/4 to 1-1/2 inches long and have D-shaped shells, often with alternating yellow and brownish colored stripes. Female zebra mussels can produce 100,000 to 500,000 eggs per year. These develop into microscopic, free-living larvae (called “veligers”) that begin to form shells.

To avoid contamination of Schutz Lake, do not purchase docks or lifts from invested lakes to be installed in Schutz Lake. If you are unsure of the origin of a used dock or lift, have a service such as Lake Shore Services decontaminate your purchase before you install it into Schutz.

Do not launch a trailer or boat of any sort into Schutz if it has been in a contaminated lake without decontaminating it first at a DNR approved decontamination center.