Mexican Wolf
Southwest Region Ecological Services
Southwest Region USFWS facebook page Southwest Region USFWS page Southwest region USFWS Flikr page USFWS YouTube site

Experimental Population Regulations - 10j


Public Input on Supplemental Environmental Impact Statement

On March 31, 2018, the District Court of Arizona remanded portions of the 2015 final rule to revise the designation of the Mexican Wolf Experimental Population Area in Arizona and New Mexico. The ruling directs the Service to redress several components of the rule to ensure the experimental population contributes to long-term Mexican wolf conservation and recovery. To comply with the remand, the Service must publish a revised, final rule by May 1, 2021. Additional information on this process is available on our NEPA Planning page.

Read the news release.
Read the FAQ
Read the Federal Register Notice

January 2015

  1. Revision to the Regulations for the Nonessential Experimental Population of the Mexican Wolf (2015 Final Rule) - January 2015
  2. Revision to the Regulations for the Nonessential Experimental Population of the Mexican Wolf; CorrectionJanuary 2015
  3. Frequently Asked Questions - Revised Mexican Wolf 10(j) Rule and Revised ListingUpdated January 12, 2015
  4. Fact Sheet - 2015 Final Rule - March 2015

    Peer Reviews for the 10j Modification

    Peer Reviews Received on Docket FWS-R2-ES-2013-0056
    Proposed Revision to the Nonessential Population of the Mexican Wolf

Public Hearings

Proposed Rule for 10j Modification

Proposed Rule for Reclassification

Related Information

Stipulated Settlement Agreement and Order, Case NO. 1:12-cv-1920=RCL, August 26, 2013

This stipulated settlement between the Plaintiff (The Center for Biological Diversity) and the Defendants (U.S. Department of the Interior and the U.S. Fish and Wildlife Service) sets a date (January 12, 2015) by which a final rule must be completed . The substance of the provisions we may or may not include in the Final 10(j) rule are not subject to this settlement. The proposed 10(j) rule Proposed Revision To the Nonessential Experimental Population of the Mexican Wolf was published in the Federal Register on June 13, 2013 (78 FR 35719, June 13, 2013). It contains the provisions that the Service has proposed for consideration to be included in the Final 10 (j) Rule.

For more information regarding the Settlement Agreement and Order please visit the following links:

Mexican wolf 10(j) Settlement Agreement

Mexican wolf 10(j) Order Adopting Settlement Agreement


Mexican Wolf Recovery Program
New Mexico Ecological Services Field Office
2105 Osuna Road NE
Albuquerque, NM 87113
Office: (505) 346-2525
Fax: (505) 346-2542
U.S. Fish and Wildlife Service
Southwest Regional Office
500 Gold Avenue SW
Albuquerque, NM 87102
Main: (505) 248-6920
Fax: (505) 248-6788
Mexican Wolf Interagency Field Office
P.O. Box 856
Alpine, AZ 85920
Office: (928) 339-4329
Fax: (928) 339-4218
Last updated: May 11, 2021