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 Quick Links sidebar at right for frequently visited pages, and navigate the rest of the website using the menu to the left.
Read more about the Survey on our about page.
Submit nominations for our Surface Mine Reclamation Awards by December 31, 2026!
DNR recognizes excellence in reclamation and reclamation-related research by offering annual surface mine reclamation awards. These awards are intended to honor individuals, miners, operators, companies, or government agencies performing exemplary surface mining reclamation or related research in Washington State. Read our flyer to learn more!
What's New
WALERT Report for the Little Giant Fire
On October 13 we released a new Wildfire-Associated Landslide Emergency Response Team report for the Little Giant Fire in Chelan County. Click here to download the report.
WALERT Report for the Sinlahekin Fire
On October 8 we released a new Wildfire-Associated Landslide Emergency Response Team report for the Sinlahekin Fire in Okanogan County. Click here to download the report.
New Tsunami Evacuation Walk Time Maps
On October 6 we released two new tsunami evacuation walk time maps for the communities of Clallam Bay and Chinook. Click here to access all of our tsunami evacuation products.
Reports from the School Seismic Safety Program
On October 1 the School Seismic Safety Program released four new district-level reports for the Blaine, Evaline, Green Mountain, and Quillayute School Districts. See the new reports and read more about the program on the School Seismic Safety webpage.
WALERT Report for the Autumn Lane, Old Trails, and Fairview Fires
On September 28 we released a new Wildfire-Associated Landslide Emergency Response Team report for the Autumn Lane, Old Trails, and Fairview Fires in Spokane and Stevens Counties. Click here to download the report.
WALERT Report for the Chelan Hills Fire
On August 24 we released a new Wildfire-Associated Landslide Emergency Response Team report for the Chelan Hills Fire in Douglas County. Click here to download the report.
Tsunami Modeling for an Alaska Earthquake
On August 4 we released a new report on tsunami inundation from an Mw 9.2 Alaska-Aleutian subduction zone earthquake (15.2 MB PDF), accompanied by a video simulating tsunami wave movement. You can explore the data from the report on our Geologic Information Portal.
Aggregate Resource Inventory of Grays Harbor County, Washington
On July 10 we released a new aggregate resource map for Grays Harbor County at a scale of 1:100,000. Click to download the Aggregate Resource Inventory of Grays Harbor County (12 MB zip file).
Reports from the School Seismic Safety Program
On June 25 the School Seismic Safety Program released two new district-level reports for the Index and Toutle Lake School Districts. See the new reports and read more about the program on the School Seismic Safety webpage.
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.
