Octoraro Creek
Octoraro Creek is a 22.1-mile-long (35.6 km)tributary of the Susquehanna River, joining it 9 miles (14 km) above the Susquehanna's mouth at Chesapeake Bay. The Octoraro rises as an East and West Branch in Pennsylvania. The East Branch and Octoraro Creek form the southern half of the border between Lancaster and Chester counties until the creek crosses the Mason-Dixon line. It winds through northwestern Cecil County, Maryland before joining the Susquehanna.
Each of the branches is less than 20 miles (32 km) long. The entire creek drains 208 square miles (540 km2) of watershed.
Octoraro Creek was designated a Pennsylvania Scenic River by Legislative Act 1983-43, managed by the Octoraro Creek Watershed Association. A brick tunnel leading to Octoraro Creek was built by Charles Spotts and used by slaves travelling the Underground Railway through Lancaster County, Pennsylvania.
The East Branch Octoraro Creek, 18.1 miles (29.1 km) long, starts at Christiana, Pennsylvania, created by the confluence of Williams Run and Pine Creek, which carries the Lancaster - Chester County border for about a mile. The East Branch continues the border with Lancaster County to the west and Chester County on the east bank. The branch enters a steep wooded valley and passes under the Mercer's Mill Covered Bridge at Bailey Crossroads Road. The branch continues through the valley which widens out near Steelville. The branch loops through another steep valley north of Homeville, which widens out before the creek passes under PA Route 896 at Andrews Bridge. Muddy Run joins the East Branch from the east out of its own set of steep valleys. The East Branch widens out into the eastern part of Lake Octoraro about 3 miles (5 km) northwest of Oxford, Pennsylvania. Along the east branch of the lake is the Girl Scouts' Camp Tweedale.
...
Wikipedia