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Access keys

Access keys are a navigation device enabling you to get around this web site using your keyboard.

Available access keys

This site uses a setup that closely matches most international recommendations on access keys. These are:

  • 1 — Home Page
  • 2 — Skip to content
  • 3 — Site Map
  • 4 — Search field focus
  • 5 — Advanced Search
  • 6 — Site navigation tree
  • 9 — Contact information
  • 0 — Access Key details

Accessibility Policy

The USGS is committed to and is making every possible effort to ensure that all electronic and information technology developed, procured, maintained, or used by the USGS is accessible to people with disabilities, including both our employees and the customers we serve.

If you cannot fully access the information on a particular page, please contact the USGS Section 508 Coordinator (see Contact information below) or the owner of the Web site. To enable us to respond in a manner that will be of most help to you, please indicate the nature of the accessibility problem, your preferred format (electronic format, for example ASCII, standard print, large print, and so on), the Web address of the requested material, and complete contact information so we can reach you if questions arise while fulfilling your request. We may provide the information to you in an alternate format.

If you have questions on a particular Web site, contact the person or group named in the footer information at the bottom of the page.

If you have questions on accessibility of Department of the Interior Web sites, see DOI Accessibility.

Accessibility Aids: Plug-ins and File Viewers

Applets, plug-ins, or other applications required by USGS web pages that are not included on the specific page are found as links from this page.

These links are to non-government sources. USGS does not endorse any of these products; they are listed below for the convenience of our visitors. Address questions about the particular plug-in or file viewer to the respective vendor.

  • Adobe Reader
    Use Adobe Acrobat to read Portable Document Format (PDF) files.
    Download Adobe Reader
  • Flash Player
    Use Adobe Flash player to view Flash applications and videos.
    Download Adobe Flash Player
  • Microsoft Word
    Microsoft offers Word file viewer and converter programs to enable those who do not have MS Word to open and view MS Word files.
    Download Word Viewer
  • Microsoft Excel
    Microsoft offers Excel file viewer and converter programs to enable those who do not have MS Excel to view MS Excel files.
    Download Excel Viewer
  • Microsoft PowerPoint
    Microsoft offers PowerPoint file viewer and converter programs to enable those who do not have MS PowerPoint to view MS PowerPoint files
    Download PowerPoint Viewer


For relevant USGS policy on Section 508, refer to the Survey Manual chapter entitled, “Implementation and Administration of Section 508 of the Rehabilitation Act.”

For further information and to learn more about the regulations governing the accessibility of electronic Federal information products, visit the following sites:

Relay Services


If you have questions on accessibility of USGS Web sites, contact:

USGS Section 508 Coordinator
Mail Stop 807
National Center
Reston, VA 20192

Last Updated: Oct 04, 2005 02:57 PM
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