U.S. Geological Survey

Open-File Report 2005-1252

Version 1.0

Prepared in cooperation with the City of Seattle and the Pacific Northwest Center for Geologic Mapping Studies at the Department of Earth and Space Sciences, University of Washington

The Geologic Map of Seattle—A Progress Report

By Kathy Goetz Troost, Derek B. Booth, Aaron P. Wisher, and Scott A. Shimel

2005

A new geologic map of Seattle, Washington is nearing completion. This report, prepared for the 2005 Washington Hydrogeology Symposium, describes the status of mapping. The new map is the result of field mapping and compilation of subsurface geologic data during the years 1999-2004 and was funded by the City of Seattle and the U.S. Geological Survey. Data from more than 36,000 exploration points, geotechnical borings, monitoring wells, excavations, and outcrops were used in making the map.

Download the geologic map as a 36"x60" PDF document (of2005-1252.pdf; 42.6 MB)

See also Geologic Map of Northwestern Seattle (Part of the Seattle North 7.5' X 15' Quadrangle), King County, Washington (USGS Scientific Investigations Map 2903). This map shows greater detail of part of this study area.

The authors welcome comments; please send to Kathy Goetz Troost .

USGS contacts: Ray Wells or Karen Wheeler .

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