CLOSE Latest aquatic invasive species (AIS) updates

Treatment for zebra mussels continues at Christmas Lake

A group of organizations has been acting swiftly to stop zebra mussels in Christmas Lake since they were discovered at the public boat launch in August -- and the battle continues. 

In Sept., the Minnesota Department of Natural Resources (DNR) applied Zequanox®, a non-chemical treatment for zebra mussels, in a 3,000 square foot containment area around the public launch. After some zebra mussels were discovered just outside the containment area, the barrier was expanded to cover 3/4 of an acre.  

As an additional component of the treatment, the DNR is currently treating the area with a new copper-based treatment called EarthTec QZ, as the water has become too cold for Zeqaunox to be fully effective. Copper is commonly used to kill algae, and EarthTec QZ is a new product aimed specifically at zebra and quagga mussels.

The MCWD's monitoring staff have not found any live mussels since the treatment. The organizations involved include the state Department of Natural Resources (DNR), state Department of Agriculture, MCWD, and City of Shorewood. 

The DNR and Minnesota Department of Agriculture are also working with the federal Environmental Protection Agency to get permission to treat the area with potash (potassium chloride), which is also effective in killing zebra mussels.

OPEN Report an aquatic invasive species

OPEN About the Aquatic Invasive Species (AIS) program

Subscribe to RSS - Aquatic Invasive Species (AIS)