Winter made its comeback this week with colder temperatures and snow.  The St. Croix River, which creates the border between northern Wisconsin and Minnesota was showing the results of the weather change.  Just last week the river was flowing freely, cascading southward to join up with the Mississippi River.  This week was another story.  The shoreline was filled with thin and uneven ice pushed up against the banks, yet the river flowed freely in the middle, carrying smaller sections of ice with the current.  If the cold temperatures continue the river will freeze completely and will remain frozen until the warmer temps of spring.