The Susquehanna River encompasses all the waters of the Susquehanna River and its tributaries north of a line beginning at a point, at or near Lat. 39° 32.367' N., Long. 76° 5.0830' W., then running 60° (True) to a point, at or near Lat. 39° 32.850' N., Long. 76° 4.000' W.