Cobbs Creek

Cobbs Creek is an 11.8-mile-long tributary of Darby Creek in Delaware County, Pennsylvania, in the United States. It forms an approximate border between Montgomery County and Delaware County. After Cobbs Creek passes underneath Township Line Road , it forms the border between Philadelphia County and Delaware County. It runs directly through the two sides of Mount Moriah Cemetery which spans the border of Southwest Philadelphia and Yeadon, Pennsylvania. It later joins Darby Creek before flowing into the Delaware River.
Cobbs Creek used to be called "Karakung" by Native Americans. This was the site of the historic Old Swede's Mill on the Karakong Kill which Governor Johan Printz, governor of New Sweden had built during 1645. It was the first water mill built within the limits of Pennsylvania. Its site may still be seen at the rocks on the east bank of the stream near the Blue Bell Inn on the road from Philadelphia to Darby. There were a few mills established around the portion of the river located along Karakung Drive in Haverford Township. Nitre Hall Powder Mills were built in the early 19th century along Cobb’s Creek on Karakung Drive. It was a center for manufacture for almost 200 years.

Wikipedia