Tri-States Rock in the Delaware River. The rock on which the man stands is at the intersection of New Jersey, Pennsylvania, and New York boundaries
New Jersey lies between 73° 55′ and 75° 32′ west longitude and between 38° 56′ and 41° 21′ north latitude. Its northernmost point is marked by a rock on the shore of the Delaware River just south of Port Jervis, New York, known as Tri-States Rock. From this point to Cape May the length of the state is 166 miles. Its narrowest part, between Trenton and Raritan Bay, is 335 miles wide. Its widest part, measured on a line extending northwest from Great Egg Inlet, is 57 miles wide.
It is the smallest of the Middle Atlantic states and has an area of 8224 square miles, of which 7514 square miles are land surface and 710 square miles are water surface. It is the forty-fifth of the states in size.
RELIEF
Topographic provinces of New Jersey
In a general way the surface of New Jersey may be described as mountainous in the northern part, undulating in the middle part, and low and sandy in the southern part. The state is divided into four provinces or zones; namely, the Appalachian zone, the Highlands, the Piedmont Plateau, and the Coastal Plain. These zones extend from southwest to northeast.
The Appalachian zone, which consists of Kittatinny Mountain and Kittatinny Valley, extends across the northwestern part of the state from the Delaware River in the vicinity of the Delaware Water Gap to the New York state line. The width of this belt varies from twelve to fourteen miles. The Kittatinny Mountain extends along the Delaware River for thirty miles in the northwestern corner of the state. It extends into Pennsylvania, where it is known as Blue Mountain. The height of this range varies from 1500 feet to 1800 feet. Its highest point and the highest in the state is High Point, which has an elevation of 1804 feet. The Kittatinny Valley is on the southeast side of Kittatinny Mountain and runs parallel with it.
The Appalachian zone, with its rugged surface, extensive forests, and many lakes, is noted for its beautiful scenery, which attracts many summer visitors. The Delaware Water Gap is particularly noted on this account. This is a break in the Kittatinny Mountain through which the Delaware River flows. Because of the rough surface this section of the state is not adapted to agriculture, although on the bottom lands bordering on the streams and in the Kittatinny Valley there are many farms devoted to the raising of crops and to grazing.