A Kent woman was killed in a collision on Route 7 with a dump truck.  New Milford Police say 24-year old Christina Walters was driving a sedan in the area of Cedar Hill.  Police say it's unclear what happened to cause the two vehicles to collide and the investigation is ongoing.  The dump truck ended up down an embankment and in the Housatonic River.  That driver, 56-year old Jeff Griener of Poughquag, New York, sustained non-life threatening injuries.  He was able to reach shore on his own.  Walters was pronounced dead at the scene.  Route 7 was closed for several hours as police investigated.