Spring Run is a tributary of Flaugherty Run in Allegheny County, Pennsylvania, in the United States. It is approximately long and flows through Crescent, Pennsylvania. The watershed of the stream has an area of .
Course
Spring Run begins in Crescent, near Brodhead Road. It flows northeast and reaches its confluence with Flaugherty Run.
Spring Run joins Flaugherty Run upstream of its mouth.
Tributaries
Spring Run has no named tributaries. However, it does have an unnamed tributary which joins Spring Run about halfway down its length.
Geography and geology
The elevation near the mouth of Spring Run is above sea level. The elevation of the stream's source is between above sea level.
Watershed
The watershed of Spring Run has an area of .
History
Spring Run was entered into the Geographic Names Information System on August 2, 1979. Its identifier in the Geographic Names Information System is 1188258.