Watrous RunWatrous Run is a long first-order tributary to East [Branch Tunungwant Creek]. This is the only stream of this name in the United States.CourseWatrous Run rises about northwest of Lewis Run, Pennsylvania, and then flows southeast to meet East Branch Tunungwant Creek at Lewis Run.WatershedWatrous Run drains of area, receives about of precipitation, and is about 91.36% forested.