Interactive Map Themes
Washington Interactive Geologic Map
This map theme provides the ability to view geologic mapping at three scales, geologic hazards mapping, and their relationship to each other. It allows the user be able to choose which geoscience layers to overlay (for example, to compare hazard zones with the underlying geology). It includes a full complement of base map information to assist in locating areas of interest.
Landslides of Washington State
This theme is a guide to mapped landslides in Washington State. The landslide layers represent mapping from several sources, including published 1:100,000- and 1:24,000-scale geologic mapping as well as digital landslide databases compiled and maintained by the Washington State Department of Natural Resources and various other organizations. The polygons represent landslides, which can include landslide deposits and scarp areas.
This theme consists of detailed base information, overlain by mapped tsunami hazard zones, predetermined evacuation routes, and assembly areas. This mapping has information only for areas at risk of tsunami inundation—namely, areas with a salt-water shoreline (coast and Puget Sound). If you live in a tsunami hazard area, you can find evacuation routes and assembly areas near your home or work address by using the address locator tool.
Mount Rainier Lahar (Volcanic Mudflow) Hazards - Property at Risk
This theme shows hazard zones for lahars coming from Mount Rainier, as determined by the U.S. Geological Survey. Lahars are volcanic mudflows or debris flows emanating from a volcano, typically flowing along river valleys. Lahars are of similar consistency to concrete, and can be extremely destructive. This map theme shows land parcels at risk of being affected by lahars, providing information on the value of the land, structures, and contents of each parcel. This theme also shows areas that could be affected by lava flows and pyroclastic flows, as well as areas at risk for post-eruption erosion, sedimentation, and flooding.
Geothermal Resources of Washington
This map theme is a guide to potential geothermal resources of Washington. It displays locations where geothermal data have been collected, as well as areas of potential high- and low-temperature geothermal resource. These data can be viewed in conjunction with surface geology, geologic hazard mapping, and detailed base map information to help identify potential targets for geothermal energy exploration.
Subsurface Geology Information System
This theme presents a database of subsurface geologic information, mainly in the Puget Lowland region. It is built upon the work of Kathy Troost and Aaron Wisher of the Pacific Northwest Center for Geologic Mapping Studies (GeoMapNW) at the University of Washington. The data in the GeoMapNW database were funded by grants from the U.S. Geological Survey and from agreements with the following jurisdictions: the Cities of Bainbridge Island, Bellevue, Kirkland, Mercer Island, Redmond, and Seattle; many departments in King County; Washington State Department of Transportation; and the Division of Geology and Earth Resources in the Washington State Department of Natural Resources. Many consulting firms voluntarily contributed large volumes of subsurface data including Associated Earth Sciences Inc., Creative Engineering Options, GeoEngineers, and Yonemitsu Geological Services.
Most of the information is from geotechnical boring logs. The map consists of points indicating where subsurface information is available; clicking on one of the points with the 'Identify' tool provides a host of information about the available data for that point, including a link to a PDF of the associated geotechnical report. Complete base map information aids in locating areas of interest.
Earth Resource Permit Locations
This theme allows the user to view the locations and descriptions of regulatory permit sites – specifically, active surface mines and oil and gas exploration wells. Both of these data sets consist of point data, and can be viewed in relation to surface geology and base map information.
Washington State Coal Mine Map Collection
This theme provides access, through a geographic index map, to scanned maps from the Washington State Coal Mine Map Collection. Rather than displaying the actual outlines of available maps (since the maps generally cannot be located accurately enough to provide a reliable geographic footprint), it displays the Public Land Survey sections that contain coal mines with maps in the collection. A user clicking on one of the sections will receive a list of mines in that area, and clicking on a mine name results in a list of maps associated with that mine. Each item in the map list is linked to a PDF file containing a scan of the map itself.