USGS

Open-File Report 97-500

A DIGITAL VERSION OF THE 1970 U.S. GEOLOGICAL SURVEY TOPOGRAPHIC MAP OF THE SAN FRANCISCO BAY REGION, THREE SHEETS, 1:125,000

By: Douglas S. Aitken

1997


Notes:


1. Documentation files

Download the documentation file:

README sftopo.txt
Documentation file describing content and formats of this publication in ascii text format (24 KB)
README sftopo.ps
Documentation file describing content and formats of this publication in postscript format (864 KB)

2. Topographic map database (spatial and attribute GIS) files:

A. Download all the topographic map database layers and supporting materials in ARC/INFO 7.x ASCII EXPORT format, by sheet, packaged in a single UNIX tar file, compressed with gzip:

Sheet 1 - sht1.tar.gz
Includes all the topographic map database layers for sheet 1. (9 MB compressed download size, 38 MB when uncompressed)
Sheet 2 - sht2.tar.gz
Includes all the topographic map database layers for sheet 2. (18.3 MB compressed download size, 86.2 MB when uncompressed)
Sheet 3 - sht3.tar.gz
Includes all the topographic map database layers for sheet 3. (24.3 MB compressed download size, 110.4 MB when uncompressed)

- OR -

B. Download one database layer in ARC/INFO 7.x ASCII EXPORT format, for all three sheets packaged in a single UNIX tar file, compressed with gzip

Index Contours - sfix.tar.gz
Index contour base map layer (contours or hypsography) (2.8 MB compressed download size, 9.2 MB when uncompressed)
Intermediate Contours - sfir.tar.gz
Intermediate contour base map layer (contours or hypsography) (19.2 MB compressed download size, 77.8 MB when uncompressed)
Drainage - sfdr.tar.gz
Drainage base map layer (10.8 MB compressed download size, 39.8 MB when uncompressed)
Culture - sfcu.tar.gz
Culture base map layer (16.6 MB compressed download size, 63.2 MB when uncompressed)
Roads - sfrd.tar.gz
Roads base map layer (8.1 MB compressed download size, 41.5 MB when uncompressed)

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The URL for this page is: https://pubs.usgs.gov/of/1997/of97-500/
Please send comments and suggestions, or report problems, to Michael Diggles
Updated: October 17, 2006 (mfd)