Windfall Run begins in a wetland on a plateau in Noxen Township. It flows north-northeast for several tenths of a mile and enters a deep valley before turning east-southeast. The stream flows in this direction for more than a mile before reaching its confluence with Baker Run.[1]
Windfall Run joins Baker Run, which is itself only 1.1 miles (1.8 km) long, 0.66 miles (1.06 km) upstream of its mouth.[1][3]
Hydrology
The concentration of alkalinity in Windfall Run is 4 milligrams per liter (0.0040 oz/cu ft).[4]
Geography and geology
The elevation near the mouth of Windfall Run is 1,365 feet (416 m) above sea level.[5] The elevation near the source of the stream is between 2,200 and 2,220 feet (671 and 677 m) above sea level.[1]
The surficial geology along Windfall Run in the Dutch Mountain quadrangle, where most of the stream is situated, consists of a till known as Wisconsinan Till. However, bedrock consisting of sandstone and shale occurs on the sides of the stream's valley.[6]
For much of its length, Noxen Township flows through a deep valley cut into a plateau.[7]
Watershed
The watershed of Windfall Run has an area of 1.68 square miles (4.4 km2).[3] The mouth of the stream is in the United States Geological Survey quadrangle of Noxen. However, its source is in the quadrangle of Dutch Mountain.[5]
Windfall Run was entered into the Geographic Names Information System on August 2, 1979. Its identifier in the Geographic Names Information System is 1199800.[5]
Biology
Wild trout naturally reproduce in Windfall Run from its headwaters downstream to its mouth.[2] The stream is designated by the Pennsylvania Fish and Boat Commission as Class A Wild Trout Waters for brook trout from its headwaters downstream to its mouth.[4]