New Mexico Unit of the Central Arizona Project
Additional Information and Documents

The AWSA provides $66 million (indexed) for the Unit, or other water utilization alternatives in southwestern New Mexico, setting aside an additional $34 million (indexed) for construction of a Unit if a Record of Decision approving it is issued by the Secretary by 2019. This date may be extended to 2030 by the Secretary under certain circumstances.

The Agreement and the AWSA specifically call for full environmental review of a potential Unit, including review under the National Environmental Policy Act (NEPA), the Endangered Species Act, the National Historic Preservation Act and related statutes. As allowed by the AWSA, New Mexico, acting through the NMISC has requested to be a joint lead for NEPA purposes. Agreements have been developed between Reclamation and the NMISC as joint leads, the Entity as project beneficiary, and other agencies that may play a role in the environmental compliance process outlining roles and responsibilities, funding arrangements and other requirements. In addition to working with the Entity and NMISC, Reclamation has met with the U.S. Forest Service, U.S. Fish & Wildlife Service, U.S. Bureau of Land Management, and US Army Corps of Engineers as potentially affected agencies to ensure reliable communication and cooperation moving forward with the NEPA process.

Reclamation is authorized to design, construct, operate and maintain the Unit. Per the AWSA, any or all of these responsibilities will be transferred to the Entity if requested. The Entity formally requested transfer of design authority by letter to the Secretary dated April 4, 2016. Reclamation will continue to work with the Entity to provide oversight and ensure design adheres to Reclamation design standards.  


Clarification Regarding Environmental Analysis for the New Mexico Unit of the Central Arizona Project
Letter - Transfer of responsibility to design the NM Unit to the NM CAP Entity

NEPA Products

Notice of Intent To Prepare an Environmental Impact Statement, Federal Register June 12, 2018
DRAFT Peer Review and Information Quality Plan
Memorandum of Understanding (MOU) Between Joint Lead Agencies - NMUCAP EIS

Governing Documents

Colorado River Basin Project Act of 1968
Codified portions of the Colorado River Basin Project Act of 1968, as amended (​43 U.S.C. 1524)
2004 Arizona Water Settlements Act
Consumptive Use and Forbearance Agreement
New Mexico Unit Agreement
Principles & Requirements for Federal Investments in Water Resources and Interagency Guidelines

  1. Agency Specific Procedures
  2. Principles and Requirements
  3. Interagency Guidelines
National Environmental Policy Act
Endangered Species Act
National Historic Preservation Act

Bureau of Reclamation Reports

Upper Gila Water Supply Study 1987
New Mexico Upper Gila River Fluvial Geomorphology Study 2004
Arizona Upper Gila River Fluvial Geomorphology Study 2004
New Mexico Gila Basin – Supply and Demand Correlation 2010
Appraisal Level Report on the AWSA Tier-2 Proposals and Other Diversion and Storage Configurations 2014
Value Study – New Mexico Unit 2015
New Mexico AWSA Gravity Flow Analysis - July 8, 2016

Bureau of Reclamation Presentations

BOR documents for October 3, 2017 CAP Entity Meeting
Lower Colorado River Development Fund
Diversion Structure Options

Website Links

Project Website for New Mexico Unit of CAP EIS
New Mexico - Arizona Water Settlements Act – Website provides access to NMISC's activities related to AWSA
New Mexico CAP Entity Website

Last Updated: 6/3/19