Geologic Information Portal

Important Announcement!

We're releasing a new application soon that will work on desktop machines and mobile devices and will replace our current portal. If you'd like to give the new beta site a test run, click on the image to the left. Note that we are still making the final touches to the site and features may change at any time. We plan to fully replace the portal with the new version in mid-September. After that point, the URL to the application will change.

Need help navigating the new site? Here's our Help Page for the new portal.

Tell us what you think of the new site:

The Washington State Geologic Information Portal

The Washington State Geologic Information Portal contains interactive earth science mapping, data, and related information on several topics. Each theme map below contains related layers. You can switch between theme maps from inside the application.

Subscribe to our blog to receive announcements of new additions to the portal and notification of our publication releases.

Citation information and direct downloads for GIS data layers can be found on our GIS Data and Databases page. Layer descriptions and citation information can also be found within the interactive map by clicking the green question mark in the Map Contents box next to the name of the data layer of interest. If you are unable to locate the citation for a data layer, please contact the Portal Manager.

On a mobile device? Use our new mobile app!


  Washington Interactive Geologic Map
Geologic mapping interactive map, with mapping data at multiple scales and other geologic layers
Layers include: 
  • 1:24,000, 1:100,000, 1:250,000, and 1:500,000-scale geologic map layers
  • seismogenic features 
  • ground response
  • landslides and landforms
  • tsunami inundation
  • geophysical data
  • volcanic vents
  • geochronology
  • rock geochemistry
  • minerals databases
  Seismic Scenarios Catalog
Interactive map provides loss estimates for a suite of earthquake scenarios on various faults. Each of the twenty scenarios has additional Hazus and Summary reports for viewing or download.
Layers generally include: 
  • projected damage to buildings and infrastructure
  • injuries and fatalities
  • displaced households
  • building economic loss
  • statistical population information
  Natural Hazards
Natural hazards interactive map showing information relating to faults, landslides, earthquakes, tsunamis, and volcanoes
Layers include: 
  • seismogenic features (faults and earthquakes)
  • landslides and landforms 
  • ground response 
  • tsunami evacuation 
  • tsunami inundation
  • Mount Rainier lahar hazards
  Tsunami Evacuation Map
Tsunami evacuation information for areas along the Pacific Coast, Strait of Juan de Fuca, and northern Puget Sound communities. Data was developed from tsunami evacuation brochures developed with the cooperation of coastal communities, counties, and the Department of Emergency Management
Layers include: 
  • evacuation routes and zones
  • assembly areas
  • local landmarks
  • evacuation brochure boundaries
  Geothermal Resources of Washington
Geothermal resource interactive map, with temperature, chemistry, geophysical, and fault data along with statewide geothermal favorability modeling.
Layers include: 
  • thermal and mineral springs
  • geothermal wells
  • geothermal direct-use data
  • geochronology 
  • rock geochemistry
  • geothermal favorability modeling
  • seismogenic features (faults and earthquakes
  • landslides and landforms
  • geophysical data
  • volcanic vents
  • geologic map layers
  Subsurface Geology Information System
Digital inventory and interactive map of subsurface data, including geotechnical boring logs, test pit logs, and water well records, with lithology information and links to original source documentation.
Layers include: 
  • geotechnical borings 
  • water wells
  • shear wave data
  • geologic map layers
  Earth Resource Permit Locations
Interactive map of active surface mines permitted by DNR and oil and gas exploration wells, with links to scanned geophysical logs and other well permit documents.
Layers include: 
  • active surface mine permit sites
  • dry oil and gas holes (with scanned documents)
  • geologic map layers
  Washington State Coal Mine Map Collection
Interactive catalog of coal mine maps, showing mine areas and lists of available maps for each mine. Maps can be downloaded in PDF format.
Layers include: 
  • abandoned coal mine map locations

Help Using the Interactive Map Portal

We offer user guides in both written and video formats:

Other Earth Science Interactive Maps

The National Geologic Map Database (NGMDB) is a congressionally mandated project led by the U.S. Geological Survey and Association of American State Geologists. The purpose is to build a national archive of maps and related data about geology, hazards, earth resources, geophysics, geochemistry, geochronology, paleontology, and marine geology. You can access it through a searchable catalog that contains information on over 88,000 geoscience maps and reports dating back to the 1800s, with links to hundreds of publishers.
U.S. Geological Suvey National Map Viewer A U.S. Geological Survey site that allows you to interactively view "The National Map" data as a map, customize the view, and print a map 
U.S Geological Survey Earth Explorer Allows you to search, download, and order U.S. Geological Survey products from many datasets
USGS 3D Hydrogeologic Framework Model of the Columbia Plateau Regional Aquifer System Web interface allows users to explore a 3-D geologic framework model developed for the Columbia Plateau regional aquifer system as part of a USGS assessment of groundwater availability
Washington Department of Ecology GIS Applications Access to GIS applications that the Department of Ecology uses in accomplishing its mission of protecting the land, air, and waters of the state. Topics include shoreline aerial photos, regulated facilities, coastal atlas, well log viewer, environmental data, and water quality information