Ecological Services
Conserving the Nature of America in the Southwest Region
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Electronic Library

This application provides an interface to a growing number of published documents of the U.S. Fish and Wildlife Service Southwest Region. Use the list and search features to view a list of documents. Click on one of the documents in the list to view it on-line.

The Arizona Ecological Services Field Office has an independent site for it's Electronic Library. To access that site click here.

Our goal is to provide as many of our public documents as possible in electronic format here for easy access.  Our documents have been created in a variety of formats and in the interest of rapid development of this resource, we will not be publishing them all in the same format.  Some documents will be made available in a text format for download, while others will be available in HTML or Adobe Acrobat format.

To request a hardcopy of a document, please send an email to with the the document title and your contact information.

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Documents added within last 90 days:

07-May-18. USFWS. 2018. Biological Opinion on Proposed Construction of Arterial Connector from RM 2222 to RM 620 in Travis Co, Tx..

02-Apr-18. USFWS. 2018. Draft Recovery Plan for Four Invertebrate Species of the Pecos River Valley: Noel’s amphipod (Gammarus desperatus), Koster’s springsnail (Juturnia kosteri), Roswell springsnail (Pyrgulopsis roswellensis) and Pecos assiminea (Assiminea pecos).

  • Visit the Department of the Interior's New Library Site
  • Visit the U.S. Fish and Wildlife Service Fish and Wildlife Reference Service for a searchable list of other Service publications.
  • Visit the Department of the Interior Electronic Reading Room.
  • Visit the U.S. Fish and Wildlife Service library information page for information on obtaining other documents from the USFWS.
  • Last updated: May 24, 2016