United States Geological Survey (USGS), United States Geological Survey (USGS)
This database contains an extensive selection of digital data and imagery of the San Francisco Bay Area. Products include Digital Elevation Models (DEMs), Digital Line Graphs (DLGs), Digital Raster Graphics (DRGs), Digital Orthophotos (DOQs), and historical maps. Most of these items are available at a scale of 1:24,000; other scales are available for some. Metadata and links to documents outlining mapping standards for each category of digital product are provided.
This description of a site outside SERC has not been vetted by SERC staff and may be incomplete or incorrect. If you
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Subject: Geoscience:Geology Resource Type: Audio/Visual:Images/Illustrations Grade Level: College Upper (15-16), Graduate/Professional, College Lower (13-14), High School (9-12) Data Derived: Data Derived Topics: Human Dimensions/Resources, Earth surface
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