New Publications Released

We’re pleased to announce the release of two new publications. Geologic map of the Littlerock 7.5-minute quadrangle, Thurston County Washington Suggested Citation: Polenz, Michael; Vermeer, J. L.; Legorreta Paulín, Gabriel; Tepper, J. H.; Mahan, S. A.; Cakir, Recep, 2017, Geologic map of the Littlerock 7.5-minute quadrangle, Thurston County, Washington: Washington Geological Survey Map Series 2017-01, […]

Pierce County Landslide Inventory Released

The Washington Geological Survey is pleased to announce the publication of a detailed landslide inventory, susceptibility analysis, and exposure analysis of Pierce County, WA. Landslide data was generated using high-quality lidar data, the landslide inventory protocol published earlier this year (Bulletin 82),  as well as methods used by Oregon Department of Geology and Mineral Industries to […]

Going to GSA in October?

This is a friendly reminder that the Geological Society of America Annual Meeting in Seattle is coming up (October 22nd to 25th) and the abstract deadline is fast approaching (August 1st). The Washington Geological Survey (WGS) is hosting a number of sessions that we’d love for local geologists and science enthusiasts to attend. See you […]

New WGS Glacial Geology Webpage and Ice Age Floods Story Map

We at the Washington Geological Survey just released an ESRI Story Map about the ice age floods in Washington.  The Story Map, entitled Washington’s Ice Age Floods, is included on our new glacial geology webpage. Check them out! Glaciers Webpage We’ve built lots of new interactive content about glaciers on our new webpage. Learn about glacial […]

Lidar Imagery Now Available for Viewing on the Washington Geologic Information Portal

It’s finally here!  You can now view lidar imagery in our Geology Portal. We’ve added mosaics of both bare-earth and top surface lidar hillshades to the list of available base layers. What’s a Lidar Hillshade? Lidar hillshades are renderings of the lidar elevation model using simulated illumination. Bare-earth lidar shows only the ground surface (trees, vegetation, […]

Statewide Protocol for Landslide Mapping from Lidar Data Released

The Washington Geological Survey is pleased to announce a new publication that explains the detailed protocol that Survey geologists are using to systematically map landslides using lidar. This protocol closely follows the methods used by Oregon Department of Geology and Mineral Industries to map landslides in Oregon. The objective of the protocol is to establish standardized methods for […]

New guide helps homeowners identify landslide hazards

The Washington Geological Survey, in partnership with the Oregon Department of Geology and Mineral industries, has published a Homeowners’ Guide to Landslides. It is available on the Washington Geological Survey’s webpage at for download. Landslides do not have to be large-scale events to cause lots of damage. When homes or infrastructure are built on landslides […]