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1:100,000-scale topographic contours derived from digital elevation models, San Francisco Bay region, California: a digital database

Open-File Report 2001-101
By:  and 
https://doi.org/10.3133/ofr01101

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Abstract

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.

Suggested Citation

Wright, H.M., and Wentworth, C.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 2001-101, Report: 15 p.; Description of database: .TXT and PS file; 11 Map PS.GZ files; 11 Map PDF files; 1 Map TAR.Z files; 1 Map TAR files; 11 Data e00.GZ files; 13 Data TAR.GZ files, https://doi.org/10.3133/ofr01101.

ISSN: 2331-1258 (online)

Study Area

Publication type Report
Publication Subtype USGS Numbered Series
Title 1:100,000-scale topographic contours derived from digital elevation models, San Francisco Bay region, California: a digital database
Series title Open-File Report
Series number 2001-101
DOI 10.3133/ofr01101
Year Published 2001
Language English
Publisher U.S. Geological Survey
Publisher location Reston, VA
Contributing office(s) Western Geographic Science Center, Geology, Geophysics, and Geochemistry Science Center
Description Report: 15 p.; Description of database: .TXT and PS file; 11 Map PS.GZ files; 11 Map PDF files; 1 Map TAR.Z files; 1 Map TAR files; 11 Data e00.GZ files; 13 Data TAR.GZ files
Country United States
State California
Other Geospatial San Francisco Bay Region
Additional publication details