Natural Features & Ecosystems
GEOLOGY and LANDFORMS
Four geologic provinces running in a generally east-west direction shape the Lower Delaware River corridor's varied landscapes. The topography of the northern end of the corridor is broken by rocky and mountainous terrain. The middle river corridor is comprised of hills and clay soils, which contrast markedly with the southernmost province - the flat, marshy coastal plain.
Did You Know?
... Prickly pear cactus, the only cactus found widely in the eastern United States, grows along the Delaware River's cliffs. Its yellow flowers and red fruit bloom June through August, and are found as far north as Massachusetts. More...