Glade Run begins in a valley in Lewis Township, Northumberland County. It flows northeast for several tenths of a mile before turning north and exiting Lewis Township and Northumberland County. Upon exiting Northumberland County, the stream enters Muncy Creek Township, Lycoming County. It continues flowing north for several tenths of a mile before receiving an unnamed tributary from the and turning northwest. After a short distance, the stream turns north again for a few tenths of a mile, receiving an unnamed tributary from the before turning west and receiving another unnamed tributary from the right. It then turns west-southwest for several tenths of a mile before turning west for a few tenths of a mile. The stream then receives an unnamed tributary from the left and turns north-northeast for several tenths of a mile. It then turns northwest for a few miles, leaving its valley, crossing Interstate 180, receiving two unnamed tributaries from the left, and entering Muncy. In Muncy, it flows north-northwest for several tenths of a mile before turning northwest and reentering Muncy Creek Township. It then gradually turns south-southwest. After several tenths of a mile, the stream turns northeast before turning west-southwest for a few tenths of a mile. It then reaches its confluence with the West Branch Susquehanna River. Glade Run joins the West BranchSusquehanna River upriver of its mouth.
Hydrology
Glade Run is not designated as an impaired waterbody. The peak annual discharge of Glade Run at its mouth has a 10 percent chance of reaching. It has a 2 percent chance of reaching and a 1 percent chance of reaching. The peak annual discharge has a 0.2 percent chance of reaching.
The watershed of Glade Run has an area of. The mouth of the stream is in the United States Geological Survey quadrangle of Muncy. However, its source is in the quadrangle of Hughesville. The mouth of the stream is located within of Muncy. The designated use for Glade Run is aquatic life. A potential impoundment site on the stream was considered by the Lycoming County Planning Commission in 1969. It would have had an area of if constructed. Pennsylvania State Game Lands Number 325, which has an area of is partially in the watershed of Glade Run, with its northern portion being located near the headwaters of one of the stream's unnamed tributaries.
History
Glade Run was entered into the Geographic Names Information System on August 2, 1979. Its identifier in the Geographic Names Information System is 1175663. Glade Run received its name from the glades through which it flowed along its course. An Indian path known as the Wyoming Path historically ran alongside Glade Run for part of its length. In 1771, shortly after John Scudder settled on Glade Run, his daughter Mary Scudder became the first white child to be born in what is now Lycoming County. In the early 1900s, a 3-million-gallon reservoir in the watershed of Glade Run was used as a water supply by the Muncy Water Supply Company for the borough of Muncy. A concrete tee beam bridge carrying Pennsylvania Route 405 over Glade Run was built in Muncy in 1919. In 1920, a concrete slab bridge carrying Carpenter Street over the stream was built, also in Muncy, as was a concrete stringer/multi-beam or girder bridge carrying Green Street. A concrete slab bridge carrying Mechanic Street over Glade Run was built in 1938, again in Muncy. A concrete tee beam bridge carrying State Route 2061 was constructed across the stream in 1962 near Muncy. A prestressed box beam or girders bridge carrying State Route 2044 across the stream was built in 1974. A two-span concrete culvert bridge carrying State Route 2014 was built over Glade Run in 1978 north of Muncy. In 1980, another concrete culvert bridge was built across the stream, this one southeast of Muncy and carrying State Route 2009.
Biology
The drainage basin of Glade Run is designated as a Warmwater Fishery and a Migratory Fishery.
