New Washington lidar data and screensaver images!

New lidar data The Washington Geological Survey (WGS) has just released new lidar data for several areas in Washington. Since 2016 we have been involved in collecting over 6,400 square miles of lidar and have added many additional lidar datasets from our partners for public use. Lidar is a technology that uses light pulses to collect elevation […]

New Lidar Story Map for GIS Day!

To celebrate GIS Day, the Washington Geological Survey has released a new story map titled: The Bare Earth—How lidar in Washington state exposes geology and natural hazards. Geologists in Washington State use lidar to map landslides and faults, to study volcanoes, glaciers and rivers, and to model tsunami inundation. This narrative features over 50 intriguing […]

Portal Update

We’ve updated some of the data on our Geologic Portal including: tsunami evacuation maps and surface geology at 1:24,000 and 1:100,000 scales. For tsunami evacuation, we’ve fixed some wonky data and more importantly, added the evacuation zones and routes for the area surrounding the Port of Tacoma. We’ve also updated our 24k geologic mapping data with […]

Coolest Interpretive Sign in Olympia

Last week, we celebrated the addition of a new interpretive sign at Kettle View Park, here in Olympia. The Geology Division worked closely with the City of Olympia to produce an innovative explanation of the area’s glacial history for visitors. Why the Sign? Located within the Budd Inlet kettle train, Kettle View Park offers proximity to several large […]

Newly Published: San Juan Tsunami Inundation Hazard Maps

Tsunami Hazard Maps of the San Juan Islands, WA —Model Results from a Cascadia Subduction Zone Earthquake Scenario This new publication is part of a collaborative effort to show areas at risk of inundation by tsunamis that are generated from large earthquakes. See other reports and maps on our Tsunami Inundation webpage. For more on […]

Peering into the earth: Geophysical techniques can find rock for forest roads — Ear to the Ground

Fresh off the stump and replete with water, fresh-cut timber is heavy stuff. A fully loaded logging truck can tip the scales at 68,000 pounds, which is the weight equivalent of approximately 17 average-size cars. To support this kind of weight, forest roads must be built strong with good, hard rock. How hard? Generally, the […] […]

New Map Poster Available-The Cheney-Palouse Tract of Washington’s Channeled Scablands

A new map poster is available titled The Cheney–Palouse Tract of Washington’s Channeled Scablands. Using elevation data, it highlights a remote portion of the Eastern Washington landscape shaped by catastrophic ice-age floods. During the last ice age, a lobe of the Cordilleran Ice Sheet formed an ice dam that blocked a major valley in what […]

Landslides and Landforms Database and Portal Update

The Landslides and Landforms database has been updated in order to fix some attribution issues and its appearance on the Geology Portal  has been given a minor make-over. Updated Citation: Washington Division of Geology and Earth Resources, 2016, Landslides and landforms–GIS data, July 2016: Washington Division of Geology and Earth Resources Digital Data Series 12, […]