County Line Branch

County Line Branch
County Line Branch in Northumberland County
Physical characteristics
Source
• location	Muncy Hills in Anthony Township, Montour County, Pennsylvania/Lewis Township, Northumberland County, Pennsylvania
Mouth
• location	West Branch Chillisquaque Creek in Anthony Township, Montour County, Pennsylvania
• coordinates	41°04′46″N 76°41′10″W / 41.0794°N 76.6861°W / 41.0794; -76.6861
• elevation	518 ft (158 m)
Length	8.9 mi (14.3 km)
Basin size	8.97 sq mi (23.2 km2)
Basin features
Progression	West Branch Chillisquaque Creek → Chillisquaque Creek → West Branch Susquehanna River → Susquehanna River → Chesapeake Bay
Tributaries
• left	McKee Run
• right	Beaver Run

County Line Branch (also known as the County Line Branch of Chillisquaque Creek^[1]) is a tributary of West Branch Chillisquaque Creek in Northumberland County and Montour County, in Pennsylvania, in the United States. It is approximately 8.9 miles (14.3 km) long and flows through Lewis Township in Northumberland County and Anthony and Limestone Townships in Montour County.^[2] The stream's watershed has an area of 8.97 square miles. Its tributaries include Beaver Run and McKee Run.

The main rock formations in the watershed of County Line Branch are the Hamilton Group, the Onondaga and Old Port Formation, the Trimmers Rock Formation, and the Keyser and Tonoloway Formation. The soil series in the watershed include the Chenango-Pope-Holly series, the Berks-Weikert-Beddington series, the Hagerstown-Edom-Washington series, and the Watson-Berks-Alvira series. Industries in the watershed include agriculture and timbering. The Mountour County Natural Heritage Inventory lists the headwaters of County Line Branch as a "locally significant" site.