You’ve come to the right place! It’s still DNR’s website, just more mobile-friendly and accessible.
Washington Geological Survey
Site under construction
Thank you for visiting the website of the Washington Geological Survey. We are in the process of upgrading our website to be more accessible. During the update process, some features and pages you may expect to see on our site might look different or be unavailable.
Contact WGS editor Nikolas Midttun (nikolas.midttun@dnr.wa.gov) with any questions. Thank you for your patience!
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
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.
Report on the 2024 Lake Roosevelt Landslide and Tsunami
On Jul 24 we released a Quick Report on the November 17, 2024, Lake Roosevelt landslide and tsunami. The report consists of a PDF pamphlet that analyzes what happened during the event along with a 2.8 GB data supplement containing GIS data and additional photographs of tsunami impacts.
Groundwater chemistry database for the Columbia basin
On Jul 3 we released a new groundwater chemistry database including 1,537 water samples from wells and other water sources in the Columbia River Basalt Group in the Columbia basin. A pamphlet and a spreadsheet provide an overview, analysis, and data. The data are also available in a new Groundwater Geochemistry geodatabase on our GIS Data and Databases page.
Landslide inventory of Thurston County, Washington
On Apr 30 we released a new landslide inventory for Thurston County. A pamphlet provides an overview, and the geospatial data are available on our Geologic Information Portal or from the Washington State Landslide Inventory Database (WASLID) on our GIS Data and Databases page.
Major update to our Quaternary Active Faults database
On Apr 28 we released a major update of our Quaternary Active Faults database. The new database can be viewed on the Geologic Information Portal or downloaded 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.