(Washington County, OR)  --  An eight-year-old boy is back home with his parents after being rescued from a frigid creek in Washington County.  The sheriff's office received a report of a missing autistic boy in the Cedar Hills neighborhood around 5:42 yesterday evening.  Deputy Daniel DiPietro and his K-9, Maverick, were able to locate the boy in Ward Creek, which was running high because of recent rains.  The boy was reported to be wet and shivering but suffered no serious injuries.