Willmar (Learfield)- The Minnesota Department of Natural Resources is confirming a report of zebra mussels in Long Lake near Willmar in Kandiyohi County.  A lake property owner contacted the D-N-R after his daughter found a zebra mussel attached to a rock while swimming in the lake.  D-N-R invasive species specialists conducted a snorkel search of two areas of the 1,568-acre lake. They found a single zebra mussel at each location.