Course
Two branches of the creek rise between Malvern and Frazer in Chester County, and then join about a mile south in Frazer. The creek flows south, then southeast to enter Delaware County and Ridley Creek State Park. Leaving the park, it passes the Tyler Arboretum and the town of Media, while entering a deep gorge. It passes local parks in Rose Vallley and the Taylor Memorial Arboretum in Wallingford. Before flowing into the tidal Delaware River, it forms the border between the city of Chester and the borough of Eddystone.
The length from the confluence of the two branches to the mouth is about 22 miles (35 km); including the longer Northeast branch gives a length of about 23 miles (37 km).
Read more about this topic: Ridley Creek