You’ve come to the right place! It’s still DNR’s website, just more mobile-friendly and accessible.
Washington Geological Survey
Welcome to our new website!
During June 2025 our website was upgraded to be more accessible. You may notice that the pages look different than they did in the past. If you are having trouble finding anything on the new site or notice any errors on any of the pages, don’t hesitate to reach out and let us know. You can contact WGS editor Nikolas Midttun (nikolas.midttun@dnr.wa.gov) with any questions or comments.
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
Update to Subsurface Database released
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.
New geothermal experience released
On Jul 28 we released a new interactive experience that combines maps, images, and videos to tell the story of geothermal energy in Washington. Check out our Geothermal Resources webpage for more information.
New tsunami evacuation walk time maps
On Jul 28 we released two new Tsunami Evacuation Walk Time maps for the communities of Raymond and South Bend. The walk time maps show the amount of time it would take to evacuate on foot from the tsunami inundation zone.
2024 Lake Roosevelt landslide and tsunami report
On Jul 24 we released a Quick Report on the November 17, 2024, Lake Roosevelt landslide and tsunami. The report consists of a pamphlet analyzing the event along with a 2.8 GB data supplement containing GIS data and photographs.
Columbia basin groundwater chemistry database
On Jul 3 we released a new database of 1,537 water samples from the Columbia basin. A pamphlet and spreadsheet provide an overview, analysis, and data. The data are also available for download from our GIS Data and Databases page.
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.
