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Neither the U.S. Government, the Department of the Interior, nor the USGS, nor any of their employees, contractors, or subcontractors, make any warranty, express or implied, nor assume any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, nor represent that its use would not infringe on privately owned rights.

Links to non-USGS sites - Links and pointers to non-USGS sites are provided for information only and do not constitute endorsement by the USGS, U.S. Department of the Interior, or U.S. Government, of the referenced organizations, their suitability, content, products, or services, whether they are governmental, educational, or commercial. Some of the documents on this server may contain live references (or pointers) to information created and maintained by other organizations. Please note that the USGS does not control and cannot guarantee the relevance, timeliness, or accuracy of these outside materials.

Non-endorsement of non-USGS products and services - Hypertext links and other references to non-USGS products and services are provided for information only and do not constitute endorsement or warranty by the USGS, U.S. Department of the Interior, or U.S. Government, as to their suitability, content, usefulness, functioning, completeness, or accuracy.

Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government.

Public domain software - Links are provided to public-domain software developed by or for the USGS. Although these programs have been used by the USGS, no warranty is made by the USGS as to the accuracy and functioning of the programs and related program material. Distribution of these materials also does not constitute any warranty, and no responsibility is assumed by the USGS in connection with any distribution activity.

Disclaimer

Information presented on this Web site is considered public information and may be distributed or copied. Use of appropriate byline/photo/image credit is requested. We strongly recommend that USDOI data be acquired directly from a USDOI server and not through other sources that may change the data in some way. While USDOI makes every effort to provide accurate and complete information, various data such as names, telephone numbers, etc. may change prior to updating. USDOI welcomes suggestions on how to improve our home page and correct errors. USDOI provides no warranty, expressed or implied, as to the accuracy, reliability or completeness of furnished data. Some of the documents on this server may contain live references (or pointers) to information created and maintained by other organizations. Please note that USDOI does not control and cannot guarantee the relevance, timeliness, or accuracy of these outside materials.

For site security purposes and to ensure that this service remains available to all users, this government computer system employs software programs to monitor network traffic to identify unauthorized attempts to upload or change information, or otherwise cause damage. Unauthorized attempts to upload information or change information on this Web site are strictly prohibited and may be punishable under the Computer Fraud and Abuse Act of 1986 and the National Information Infrastructure Protection Act. Information may also be used for authorized law enforcement investigations.

Accessibility

Section 508 and Accessibility at the USGS

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

For further information and to learn more about the regulations governing the accessibility of Federal electronic information products, visit the Section 508 Web pages listed below:

Section 508 home page - http://www.section508.gov/
Access Board - http://www.access-board.gov/508.htm
Web Accessibility Initiative (WAI) - http://www.w3.org/WAI/