The Riverdale Ridge of The Bronx is composed of part of Riverdale, Spuyten Duyvil and Fieldston. This ridge contains steep slopes, rock outcrops, ponds, brooks, swampy areas and mature trees.
The western foot of the ridge contains marshes, feeding areas for water fowl. The shore line of the Hudson River estuary contains the aquatic food web necessary to sustain marine life.
The marshes and most of the Hudson River shore line are included in Riverdale Park. Much of the Riverdale Ridge and Riverdale Park are in their natural state. The purpose of this #Special Natural Area District# is to preserve and protect the aforementioned #natural features# pursuant to the provisions of this Chapter.