New Geologic Mapping Published!

We’re pleased to announce the release of two new geologic maps! Geologic map of the Violet Prairie 7.5-minute quadrangle, Thurston and Lewis Counties, Washington Abstract: The Violet Prairie quadrangle straddles Thurston and Lewis counties along western Washington’s economically vital I-5 corridor. This 1:24,000-scale geologic map aims to identify hazards and improve geologic understanding for private […]

Newly Published: Landslide Inventory and Susceptibility of the Columbia Gorge

We are excited to announce the publication of our Landslide Inventory and Susceptibility of the Columbia Gorge. Landslide Inventory and Susceptibility of the Columbia Gorge in Clark, Skamania, and Klickitat Counties, Washington Abstract Landslides are common in the Columbia Gorge due to the geologic setting, high relief, steep slopes, and abundant precipitation. In March 2017, […]

Newly Published: Port Angeles and Port Townsend Tsunami Inundation Hazard Maps

We are pleased to announce the publication of new tsunami hazard maps for Port Angeles and Port Townsend! Tsunami hazard maps of Port Angeles and Port Townsend, Washington—Model Results from a ~2,500-year Cascadia Subduction Zone Earthquake Scenario New tsunami modeling along the Strait of Juan de Fuca within an area surrounding the communities of Port […]

Newly Published: Anacortes–Bellingham Area Tsunami Inundation Hazard Maps

We are pleased to announce the publication of new tsunami hazard maps for the Anacortes–Bellingham region! Tsunami hazard maps of the Anacortes–Bellingham area, Washington—Model Results from a ~2,500-year Cascadia Subduction Zone Earthquake Scenario New finite-difference tsunami inundation modeling in the areas surrounding Anacortes and Bellingham uses a simulated magnitude 9 earthquake event with a maximum […]

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 […]

Newly Published: Southwest Washington Tsunami Inundation Hazard Maps

We are pleased to announce the publication of new tsunami hazard maps for southwest Washington! Tsunami Hazard Maps of Southwest Washington—Model Results from a ~2,500-year Cascadia Subduction Zone Earthquake Scenario New finite-difference modeling along the southern Washington coast in the area surrounding Willapa Bay and Grays Harbor uses a simulated magnitude 9 earthquake event with […]

WGS working to further earthquake understanding 17 years after Nisqually

Earthquake centered under Anderson Island touched off increased attention in earthquake science and emergency preparedness. It’s been a 17 years since Washington felt its last damaging earthquake. At 10:54 a.m. on Feb. 28, 2001 a magnitude 6.8 earthquake struck near Anderson Island. Known as the Nisqually Earthquake, the temblor shook the Pacific Northwest, with shaking […]