Course- and topic-based guides to collections, tools, and services.
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Digital showcases for research and teaching.
Geospatial content, including GIS datasets, digitized maps, and census data.
  1. Stack-Unit Mapping of Geologic Materials to a Depth of 15 Meters [Illinois]

    Illinois State Geological Survey

    Stack-Unit mapping of geologic materials to a depth of 15 meters. Stack-unit maps show the distribution of earth materials vertically from the surf...

  2. Coarse-grained Materials Within 50 Feet of the Ground Surface [Illinois]

    Illinois State Geological Survey

    This map shows the distribution of coarse-grained materials and permeable bedrock within 50 feet of ground surface in Illinois.  This includes bedr...

  3. Hazardous Materials Facilities

    Napa County Department of Environmental Management

    Point locations of facilities in Napa County with hazardous material concerns.

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