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Map and data for Quaternary faults and folds in Washington State

By David J. Lidke, Samuel Y. Johnson, Patricia A. McCrory, Stephen F. Personius, Alan R. Nelson, Richard L. Dart, Lee-Ann Bradley, Kathleen M. Haller, and Michael N. Machette

U.S. Geological Survey Open-File Report 03-428
thumbnail image of map

Version 1.0
Published 2003
The map shows faults and folds in the state of Washington that exhibit evidence of Quaternary deformation, and includes data on timing of most recent movement, sense of movement, slip rate, and continuity of surface expression. The primary purpose of this compilation is for use in earthquake-hazard evaluations. Paleoseismic studies, which evaluate the history of surface faulting or deformation along structures with evidence of Quaternary movement, provide a long-term perspective that augments the short historic records of seismicity in many regions. Published or publicly available data are the primary sources of data used to compile this report.

The text of this report is presented here in Portable Document Format. The latest version of Adobe Acrobat Reader or similar software is required to view it. If you wish to download the latest version of Acrobat Reader free of charge, click here .

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Map PDF file (13.34 MB)
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For viewing and printing.

Pamphlet PDF file (423 KB)

This sixteen-page pamphlet describes and discusses data and other information shown on the map. (This version of the report is accessible as defined in Section 508.)
Metadata file (22 KB)
A catalog of referenced data, which includes a variety of geographic, geologic, and paleoseismic parameters for the faults and folds shown on this map, is available in the “Quaternary fault and fold database of the United States” ( The pamphlet of this Open-File Report (03-428) discusses relations of this Washington State map to the Quaternary fault and fold database of the United States. logo  Take Pride in America button