Powdermill Run (White Oak Run tributary)
# Powdermill Run (White Oak Run tributary)

Powdermill Run is a 4.36 mi (7.02 km) long 2nd order tributary to White Oak Run in Westmoreland County, Pennsylvania. This stream passes through the Powdermill Nature Preserve of the Carnegie Museum.

## Variant names

According to the Geographic Names Information System, it has also been known historically as:

* Powder Mill Creek
* Powder Mill Run
* Powdermill Creek
* Tributary No.1 to White Oak Run

## Course

Powdermill Run rises on the Linn Run/Clear Run divide about 1 mile west of Bald Knob in Westmoreland County. Powdermill Run then flows northwest to meet White Oak Run about 0.25 miles southwest of Weaver Mill, Pennsylvania.

## Watershed

Powdermill Run drains 4.22 square miles (10.9 $km^2)$ of area, receives about 52.1 in/year of precipitation, has a topographic wetness index of 359.94, and has an average water temperature of 8.58 °C. The watershed is 99% forested.

