Welty Run is a long 3rd order tributary to Sewickley Creek in Westmoreland County, Pennsylvania. This is the only stream of this name in the United States.
Variant names According to the Geographic Names Information System, it has also been known historically as: Welly Run
Course Welty Run rises about 3 miles southeast of Weltytown, Pennsylvania, and then flows west to join Sewickley Creek at Norvelt, Pennsylvania.
Watershed Welty Run drains of area, receives about 44.4 in/year of precipitation, has a wetness index of 393.98, and is about 52% forested.
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