Sandy Creek is a tributary of the Allegheny River in Venango, Mercer and Crawford counties in Pennsylvania in the United States. Sandy Creek is long, flows southeast , then east , and its watershed is in area. See also List of rivers of Pennsylvania List of tributaries of the Allegheny River References Rivers of Venango County, Pennsylvania Rivers of Mercer County, Pennsylvania Rivers of Crawford County, Pennsylvania Rivers of Pennsylvania Tributaries of the Allegheny River