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Philadelphia and Delaware Bay in Northeastern USA

39.9N 75.1W

January 18th, 2012 Category: Rivers, Wetlands

USA - January 5th, 2012

The bright white area in the upper part of this orthorectified wide-swath ASAR image is Philadelphia, the largest city in the Commonwealth of Pennsylvania. The city is located in the Northeastern United States along the Delaware and Schuylkill rivers. It is the fifth-most-populous city in the United States, with a population of 1,526,006 as of the 2010 U.S. Census.

According to the United States Census Bureau, the city has a total area of 142.6 square miles (369.3 km2), of which 135.1 square miles (349.9 km2) is land and 7.6 square miles (19.7 km2), or 5.29%, is water. Bodies of water include the Delaware and Schuylkill Rivers, and Cobbs, Wissahickon, and Pennypack Creeks. The lowest point is sea level, while the highest point is in Chestnut Hill, at approximately 445 feet (136 m) above sea level (near the intersection of Germantown Avenue and Bethlehem Pike).

Visible to the south of the city is Delaware Bay, a major estuary outlet of the Delaware River on the Northeast seaboard of the United States whose fresh water mixes for many miles with the waters of the Atlantic Ocean. It has an area of 782 square miles. The bay is bordered by the State of New Jersey and the State of Delaware. The shores of the bay are largely composed of salt marshes and mud flats, which appear white in this image, with only small communities inhabiting the shore of the lower bay.

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