The Christina River is a tributary of the Delaware River, approximately 35 miles (56 km) long, in northern Delaware. It also flows through small areas of southeastern Pennsylvania and northeastern Maryland. Near its mouth, the river flows past downtown Wilmington, Delaware, forming the city's harbor for traffic on the Delaware River. The Port of Wilmington, opened in 1923 at the river's mouth, handles international cargo and trade.
The river rises in southeastern Pennsylvania in Franklin Township in southern Chester County, and initially flows southeastwardly, passing through the northeastern extremity of Maryland in northeastern Cecil County, into New Castle County in Delaware, where it flows through western and southern areas of the city of Newark and then turns northeastwardly, passing the town of Newport and approaching Wilmington from the southwest. It receives White Clay Creek from the west near Newport, and Brandywine Creek in Wilmington, approximately 2 miles (3 km) upstream of its mouth.
