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Geographic Information System Analysis of Topographic Change in Philadelphia, Pennsylvania, During the Last Century

U.S. Geological Survey Open-File Report 00-224
Version 1.0

By Peter G. Chirico and Jack B. Epstein


U.S. Geological Survey Open-File Report 00-224 consists of the open-file report document (as an Adobe Acrobat PDF file) and the ArcInfo export files and ArcView shapefiles required to produce a map of geology and topographic change. The original CD, upon which this site is based, also contains U.S. Geological Survey Fact Sheet FS-117-00, which briefly summarizes the topographic change analysis described in the open-file report, and an ArcExplorer GIS project file that can be used to view the GIS data layers that are available on this website.


Open-File Report 00-224

[The file above is the complete report with plates in PDF format, 20 MB]

Because of the large size of the report, it has been broken into three parts for easier downloading.

You must have Adobe Acrobat Reader 4 installed. Acrobat Reader 3 cannot handle the large-format page size of the plates.

If you wish to download the latest version of Acrobat Reader free of charge, click here.

Get Acrobat

GIS Data


GIS Metadata

Geology metadata and Topographic Change metadata

ArcExplorer GIS viewer software

This open-file report will soon be available for purchase on CD from:

USGS Information Services, Box 25286,
Federal Center, Denver, CO 80225
telephone: 303-202-4210; e-mail:


This report is preliminary and has not been reviewed for conformity with U.S. Geological Survey editorial standards or with the North American Stratigraphic code. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Although all data and software released with this open file have been used by the USGS, no warranty, expressed or implied, is made by the USGS as to the accuracy of the data and related materials and (or) the functioning of the software.

For questions about the content of this report, contact Peter Chirico.

URL of this page:
Maintained by: John Watson
Last modified: 11.15.00