Welcome to Crater Lake Data Clearinghouse!!!

The Crater Lake Data Clearinghouse website, created and maintained by the footer image. U.S. Geological Survey (USGS), is a gateway to information and data on Crater Lake. This website is designed to ensure that all interested users -- scientists, engineers, resource managers, developers, and the public -- have quick and easy access to a wide range of data and GIS products. The primary goal of this clearinghouse is to facilitate the coordination of research, monitoring, and environmental management activities in Crater Lake, and to ensure the widest possible access to data and information resulting from such activities.

Users of this data clearinghouse have access to a wide range of digital data and Geographic Information System (GIS) products. Examples include high-quality digital maps of digital elevation models, digital orthophoto quadrangles, digital line graphs, and digital raster graphics for the Crater Lake area. Some of the data resides on the USGS server at the footer image. Western Geographic Science Center, Menlo Park, California. The bulk of the data and information, located in databases maintained by the partnering agencies, is accessible from this clearinghouse via links.

The site is organized into different sections for the variety of users -- scientists, engineers, resource managers, developers, and the public -- to have quick and easy access according to their interest.

Click here to find out who is involved in making this website a success: Web Team.

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Digital Data

This section allow users to have easy access to a wide range of data and GIS products specific to Crater Lake. Data include high quality digital maps of geographic and geologic information.

The USGS provides two free downloadable software tools (Dem3d and Dlgv32 viewers) for viewing digital data. For more information and downloads of the viewers, please visit the Dem3d Viewer and Dlgv32 Viewer pages.

USGS provides four digital cartographic products (the 4 D's):
1. Digital Elevation Model (DEM).
2. Digital Orthophoto Quadrangle (DOQ).
3. Digital Line Graph (DLG).
4. Digital Raster Graphic (DRG).

Topics Covered:

  • Data Downloads -- GIS data depot for all available data downloads and metadata are linked from here.
  • DEM -- Cartographic/geographic data of elevations in xyz coordinates (view data in 3-D).
  • DLG -- Cartographic data in vector format (geographic data in points, lines, and polygons).
  • DOQ -- Digital, uniform-scale image created from aerial photos (a photographic map).
  • DRG -- A scanned version of the USGS 7.5-minute topographic map.
  • Bathymetry -- Relief map and data of the lake floor of Crater Lake.
  • National Atlas -- Geographic overview of the area around Crater Lake National Park, Oregon.


This section is focused toward the in-depth studies of Crater Lake. Topics can become technical.

Topics Covered:

  • Geologic History -- Geologic history of Crater Lake.
  • Formation -- General overview of the formation of Crater Lake.
  • Ecology -- Life beneath the surface of Crater Lake.
  • Lake Facts -- Facts concerning Crater Lake and its depth.
  • Space -- View Crater Lake from outer space.
  • Glossary -- Definitions and landform features that range from easy to technical terms.


This section is focused for the general public who are more interested in the leisure readings about Crater Lake.

Topics Covered:

  • Photos -- A tour of the volcano with beautiful scenic views.
  • Cultural History -- Cultural History about Crater Lake.
  • Maps -- General Maps.
  • Life -- Plants and wildlife living at Crater Lake National Park and vacinity.
  • FAQs -- Questions and Answers regarding the Crater Lake.
  • Sources -- A list of references and sources.

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All information provided is deemed reliable but is not guaranteed and should be independently verified.

Highlighted and (or) underlined terms are clickable and will take you to a new page. The footer symbol (footer image.) marks links to external web sites and selected pages that will open in a new window, with a few exceptions. Exceptions include but are not limited to the following: no footer symbol (footer image.) is placed before images and the signatures that have links to external web sites.

Thank You

Thank you for visiting the Crater Lake Data Clearinghouse website. The USGS and its partners designed this website for ease of use. Your feedback is encouraged. Please send your comments to Connie Hoong at, or click on Feedback at the bottom of the page.