Gulph Creek is a tributary of the Schuylkill River that is located in southeastern Pennsylvania. Approximately six miles long,[1] it flows in an easterly direction, and is one of four watersheds in Radnor Township, the others being, Ithan Creek, Darby Creek, and Meadowbrook Run.
George Washington and his troops camped in the Gulph Creek valley in December 1777 while en route to Valley Forge.
Gulph Creek originates at an elevation of 410 feet in Strafford and is named after the more than 200-foot-deep "gulph" the creek flows through after taking an abrupt turn north after flowing in an east-northeast direction.
This creek passes through Tredyffrin, Radnor, and Upper Merion Townships and the borough of West Conshohocken. It also passes through the village of Gulph Mills and passes Hanging Rock, alongside Route 320.
It is one of four watersheds in Radnor Township, the others being, Ithan Creek, Darby Creek, and Meadowbrook Run