the delaware river is served by various range lights. reedy island is approximately southwest of the mouth of the salem river. reedy island front light works in conjunction with the reedy island range rear light for navigation of the salem reach of the river. the finns point range light upstream of the salem river was deactivated in 1950. from the delaware river, entrance to the port is guided by the salem river range lights, the salem river directional light (), and 11 other lighted navigational aids.