Geothermal Resources in Washington State ( www.dnr.wa.gov )
This is the DNR’s take on this question:...
Washington Sate Faultlines | WA - DNR ( www.dnr.wa.gov )
This map shows areas of seismic risk from high (red) to low (grayish-green). The map is from a 2007 report (click here to download) on seismic design categories in Washington. The map also shows potentially active faults from a separate 2014 report (click here to download). Earthquakes occur nearly every day in Washington. Most...
Geologic Provinces of Washington | WA - DNR ( www.dnr.wa.gov )
Click here to access our page-size geologic map of Washington state, which includes a brief explanation of Washington's geologic history.