Washington Geological Survey
Welcome to the official website of the Washington Geological Survey. Our team works to understand and share Washington’s geology. We study hazards including tsunamis, earthquakes, landslides, and debris flows; produce maps of geology and aggregate resources; maintain databases of geologic data; and so much more.
Use the sidebar at right for our most visited pages, and navigate the survey's website using the menu to the left.
Read more about the survey on our about page.
What's New
WALERT report for the Western Pines Fire
On October 16 we released a new Wildfire-Associated Landslide Emergency Response Team report for the Western Pines Fire in Lincoln County. Click here to download the report.
WALERT report for the Lake Spokane Fire
On October 16 we released a new Wildfire-Associated Landslide Emergency Response Team report for the Lake Spokane Fire in Stevens County. Click here to download the report.
WALERT report for the Burdoin Fire
On September 30 we released a new Wildfire-Associated Landslide Emergency Response Team report for the Burdoin Fire in Klickitat County. Click here to download the report.
WALERT report for the Apple Acres Fire
On September 30 we released a new Wildfire-Associated Landslide Emergency Response Team report for the Apple Acres Fire in Chelan and Okanogan Counties. Click here to download the report.
Aggregate resource inventory for Grant County
On September 30 we released a new aggregate resource map for Grant County at a scale of 1:100,000. Download the map and pamphlet (17.9 MB zip file).
Reports from the School Seismic Safety Program
On September 25 we released nine new district-level reports for the School Seismic Safety Program. See the new reports and read more about the program on the School Seismic Safety webpage.
WALERT report for the Bear Gulch Fire
On September 24 we released a new Wildfire-Associated Landslide Emergency Response Team report for the Bear Gulch Fire in Mason County. Click here to download the report.
WALERT report for the Hope Fire
On September 18 we released a new Wildfire-Associated Landslide Emergency Response Team report for the Hope Fire in Stevens County. Click here to download the report.
Metal mines collection
On August 27 we released a new collection of materials from metal mines across Washington on our Data Preservation Website. The new metal mines collection consists of reports, maps, and more.
Update to Subsurface Database
On August 7 we released an update to our popular Subsurface Database, adding more than 10,000 new boreholes. You can check out the update on our Geologic Information Portal and download the new database from our website.
Visit the Washington Geology News blog to see more announcements and updates.
Visit the past releases page to see publications released more than three months ago.
