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Open-File Report 01-101

1:100,000-Scale Topographic Contours Derived from Digital Elevation Models, San Francisco Bay Region, California: A Digital Database

By Heather M. Wright and Carl M. Wentworth

Image of generic USGS publication coverIntroduction

This report presents a consistent set of 1:100,000-scale vector topographic contours for all eleven 30x60-minute quadrangles in the San Francisco Bay region for use in visualizing the topography and preparing maps of the region. The contours were prepared by contouring an areally continuous 30-m altitude grid (National Elevation Dataset, Jan., 1999), and differ from USGS hypsographic DLG's (available for only part of the region). The report consists of 26 numbered parts, which represent text, spatial data, and 1:100,000-scale map graphics. Most of the files are provided in two or three different digital formats. All files are available for download here.

First posted March 30, 2001

Explanatory Text Files

Map Files For Plotting and Viewing

Data Files

For additional information, contact:
Western Geographic Science Center
U.S. Geological Survey
Mail Stop 531
345 Middlefield Road
Menlo Park, CA 94025-3561

Part or all of this report is presented in Portable Document Format (PDF). For best results viewing and printing PDF documents, it is recommended that you download the documents to your computer and open them with Adobe Reader. PDF documents opened from your browser may not display or print as intended. Download the latest version of Adobe Reader, free of charge.


Suggested citation:

Wright, Heather M., and Wentworth, Carl M., 2001, 1:100,000-Scale Topographic Contours Derived from Digital Elevation Models, San Francisco Bay Region, California: A Digital Database: U.S. Geological Survey Open-File Report 01-101, https://pubs.usgs.gov/of/2001/0101/.



 


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