Northkill Creek is a stream primarily located in Berks County, Pennsylvania. It feeds into Tulpehocken Creek and covers part of the Schuylkill River and Delaware River watersheds. Northkill Creek and its tributaries are high quality trout streams. Northkill Creek begins in the Northkill Gap on Blue Mountain near Shartlesville. The creek flows nearly 11 miles (18 km) roughly south to its Confluence with Tulpehocken Creek just south of Bernville.