Dunkle RunDunkle Run is a long 2nd order tributary to Brush Run in Washington County, Pennsylvania, United States.Variant namesAccording to the Geographic Names Information System, it has also been known historically as:Dunkie RunCourseDunkle Run rises about 1 mile northwest of Buffalo, Pennsylvania, in Washington County and then flows southwest to join Brush Run about 0.5 miles northeast of Acheson.WatershedDunkle Run drains of area, receives about 40.0 in/year of precipitation, has a wetness index of 318.15, and is about 45% forested.