Paris RunParis Run is a long 1st order tributary to Harmon Creek in Washington County, Pennsylvania. This is the only stream of this names in the United States.CourseParis Run rises at Paris, Pennsylvania, and then flows south, straddling the West Virginia-Pennsylvania Stateline to join Harmon Creek about 2 miles east of Colliers, West Virginia.WatershedParis Run drains of area, receives about 40.1 in/year of precipitation, has a wetness index of 330.65, and is about 60% forested.