Geology & Earth Sciences 

• How Do I Report an Earthquake?

• How Do I Find Reported Landslides

• How Do I Report a Landslide?

• How Do I Perform Research on State Trust Lands?

• How Do I Find Information About Upcoming Forest Practices Training Events

  Information Circular 90: Flood Basalts and Glacier Floods: Roadside Geology of Parts of Walla Walla, Franklin, and Columbia Counties, Washington (1996)  (12.43 MB  PDF)
A road guide describing flood basalts and glacier flood geology of Walla Walla, Franklin, and Columbia Counties, southeastern Washington

  Open File Report 2009-2: Bibliography and Index of Geothermal Resources and Development in Washington State, with Selected General Works  (5.26 MB  PDF)
The intent of this work is to be a comprehensive compilation of references to publications about low- and moderate-temperature geothermal resources and potential development areas in Washington State

  Open File Report 94-11: Low-temperature Geothermal Resources of Washington  (9.50 MB  ZIP)
A report presenting information on the location, physical characteristics, and water chemistry of low-temperature geothermal resources in Washington

  Open File Report 2009-1: Landslide Field Trip to Morton, Glenoma, and Randle, Lewis County, Washington  (6.91 MB  PDF)
A guide for a Jan. 31, 2009 field trip focusing on typical landslides for storm events, how areas with well-known instability fared in the Jan. 7-8, 2009 storm, how logging may have affected landslides, and the impact landslides cause to the community

  Information Circular 109: Inactive and Abandoned Mine Lands--Bonanza Mine, Bossburg Mining District, Stevens County, Washington (2008)  (14.96 MB  PDF)
Characterization of the Bonanza mine site, including physical characteristics, hazards, and water-related issues

  Geologic Map GM-75: Geologic Map of the Snoqualmie 7.5-minute Quadrangle, King County, Washington (2009)  (22.76 MB  ZIP)
A 1:24,000-scale geologic map of the Snoqualmie area, Washington

  Open File Report 2009-9: Tsunami Hazard Map of Tacoma, Washington—Model Results for Seattle Fault and Tacoma Fault Earthquake Tsunamis  (3.84 MB  PDF)
A map of the Tacoma area showing areas susceptible to tsunami inundation during earthquakes on the Seattle and Tacoma faults. This map aids local governments in designing evacuation plans for areas at risk from potentially damaging tsunamis

  Open File Report 2009-8: Geologic Map of the Burley 7.5-minute Quadrangle, Kitsap and Pierce Counties  (17.52 MB  PDF)
1:24,000-scale geologic map of the Burley area, Kitsap Peninsula, Washington

  Open File Report 2009-7: Geologic Map of the Belfair 7.5-minute Quadrangle, Mason, Kitsap, and Pierce Counties  (22.44 MB  PDF)
1:24,000-scale geologic map of the Belfair area, Kitsap Peninsula, Washington

  Open File Report 2009-6: Geologic Map of the Mason Lake 7.5-minute Quadrangle, Mason County, Washington  (17.84 MB  PDF)
1:24,000-scale geologic map of the Mason Lake area, Hood Canal, Washington

  Marine Shore Landslides and Landforms of Thurston Co., Version 1.0  (4.40 MB  ZIP)
Dataset showing marine shore landslides and landforms of Thurston County. The data are in ESRI shapefile format.

  Open File Report 2009-4: Geochemistry, Geochronology, and Sand Point Count Data for the Snoqualmie 7.5-minute Quadrangle, King County, Washington  (13.60 MB  ZIP)
A data supplement to the 1:24,000-scale geologic map of the Snoqualmie area, Washington (Geologic Map GM-75)

  Open File Report 2009-3: Data Supplement to Geologic Map GM-74, Geologic Map of the Meeks Table and Western Two-thirds of the Nile 7.5-minute Quadrangles, Yakima County, Washington  (4.29 MB  XLS)
A data supplement to the 1:24,000-scale geologic map of the Meeks Table / Nile area on the eastern slope of the Cascade Range, Washington (Geologic Map GM-74)

  Quaternary Faults of Washington State, Version 1.0  (397.5 KB  ZIP)
Dataset showing Quaternary faults in Washington State. The data are in ESRI shapefile format

  Open File Report 2008-4: Geochemical Sample Analyses of Tertiary and Pre-Tertiary Volcanic Rocks in and around the North Bend 7.5-minute Quadrangle, King County, Washington  (5.22 MB  ZIP)
A geochemical data supplement to the 1:24,000-scale geologic map of the North Bend area, Puget Sound area, Washington (Geologic Map GM-73)