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?
... that by the time the Delaware River reaches its estuary, nearly 10% of the nation's population has tapped into it. Tinicum Creek has such high water quality that it is home to several rare species of plants and animals. Sections of the Delaware actually exceed federal standards for clean water. More...