Pennsylvania Statutes Title 30 Pa.C.S.A. Fish § 7302. Delaware River and Bay defined

(1) The Delaware River includes all that part of the river and its tributaries above a line drawn from the monument on the Delaware shore at or near Listons Point and the corresponding monument at or near the mouth of New Hope Creek on the New Jersey shore, as established by the Commissioners of the States of New Jersey and Delaware under the Compact of 1905 and subsequent enabling legislation of the two states.

(2) The Delaware Bay includes all the waters of the Delaware Bay south of such line and the tributaries emptying therein down to a line connecting the Harbor of Refuge Light at Cape Henlopen, Delaware, with the lighthouse at Cape May, New Jersey.