Colorado River Interim Guidelines for
Lower Basin Shortages and Coordinated Operations
for Lakes Powell and Mead

Record of Decision -- Colorado River Interim Guidelines for Lower Basin Shortages and the Coordinated Operations for Lake Powell and Lake Mead - December 13, 2007

Seven Basin States' Affirmation Statement

Implementing Agreements
          Delivery Agreement between the United States and Imperial Irrigation District (IID)

          Delivery Agreement between the United States and The Metropolitan Water District of Southern California (MWD)

          Delivery Agreement between the United States, Southern Nevada Water Authority (SNWA) and the Colorado River Commission of Nevada (CRCN)

          Funding and Construction of the Lower Colorado River Drop 2 Storage Reservoir Project Agreement among the United States, SNWA, and CRCN

          Advance Funding and Construction of a Confluence Structure as a Component of the Drop 2 Storage Reservoir Project Agreement among the United States, SNWA, and IID

          Lower Colorado River Basin Intentionally Created Surplus Forbearance Agreement among the Arizona Department of Water Resources, the Southern Nevada Water Authority, CRCN, the Palo Verde Irrigation District (PVID), IID, Coachella Valley Water District (CVWD), MWD, and the City of Needles

          California Agreement for the Creation and Delivery of Extraordinary Conservation Intentionally Created Surplus among the PVID, IID, CVWD, MWD and the City of Needles

Updated Draft Colorado River Interim Guidelines for Lower Basin Shortages and Coordinated Operations for Lake Powell and Lake Mead
       December 10, 2007 version
       November 16, 2007 version

Biological Opinion and Lower Colorado River Multi-Species Conservation Program (LCR MSCP) Concurrence Letter

Comments on Final Environmental Impact Statement
       Seven Basin States
       San Diego County Water Authority
       Environmental Protection Agency
       California Parties
       Public Citizen
       Non-Governmental Organizations

Final Environmental Impact Statement - November 2007

Preferred Alternative Summary - June 15, 2007 (PDF, 22 KB)

• Table 1: Matrix of Alternatives (PDF, 25 KB)  
• Table 2: Lake Powell Operational Diagram (PDF, 11 KB)
• Table 3: Lake Mead Operational Diagram (PDF, 13 KB)

Draft Environmental Impact Statement - February 2007
     Public Comments - posted May 4, 2007

Public Involvement Plan (PDF, 259 KB)

Scoping Summary Report - March 2006

Draft Alternatives Summary - July 13, 2006 (PDF, 36 KB)
(Note: Also see Conservation Before Shortage II in Consultation Materials below)
• Table 1: Matrix of Draft Alternatives (PDF, 26 KB)
      
• Table 2: Lake Mead Operational Diagram (PDF, 13 KB)
      
• Table 3: Lake Powell Operational Diagram (PDF, 11 KB)

Fact Sheets


• November 2007 (PDF, 176 KB)
  
• February 2007 (PDF, 208 KB)
  
• June 2006 (PDF, 232 KB)
  
• February 2006 (PDF, 189 KB)
  
• October 2005 (PDF, 276 KB)

Federal Register Notices


• Colorado River Interim Guidelines for Lower Basin Shortages and Coordinated Operations for Lake Powell and Lake Mead - Federal Register/Vol. 72, No. 212/Friday, November 2, 2007/Notices (PDF, 58 KB)



• Colorado River Interim Guidelines for Lower Basin Shortages and Coordinated Operations for Lake Powell and Lake Mead - Federal Register/Vol. 72, No. 39/Wednesday, February 28, 2007/Notices (PDF, 63 KB)



• Colorado River Reservoir Operations: Development of Lower Basin Shortage Guidelines and Coordinated Management Strategies for Lake Powell and Lake Mead, Particularly Under Low Reservoir Conditions - Federal Register/Vol. 71, No. 62/Friday, March 31, 2006/Notices (PDF, 68 KB)



• Colorado River Reservoir Operations: Development of Lower Basin Shortage Guidelines and Coordinated Management Strategies for Lake Powell and Lake Mead Under Low Reservoir Conditions - Federal Register/Vol.70, No.189/Friday, Sept 30, 2005/Notices (PDF, 58 KB)



• Colorado River Reservoir Operations: Development of Management Strategies for Lake Powell and Lake Mead Under Low Reservoir Conditions - Federal Register/Vol.70, No.114/Wednesday, June 15, 2005/Notices (PDF, 58 KB)

Public Meeting Materials


• April 2007 Presentation (PDF, 585 KB)
  
  April 2007 Participants (PDF, 329 KB)
• March 2007 Modeling Workshop Presentations (PDF, 2 MB)
• November 2005 Presentation (PDF, 306 KB)
• July 2005 Presentation (PDF, 163 KB)

Coordination/Consultation Materials


• Conservation Before Shortage II (July 7, 2006) (PDF, 66 KB)
  
  Letter to the Secretary of the Interior (PDF, 43 KB)
  Attachment A: Original Proposal (PDF, 147 KB)
  Attachment B: Taking ICS to Mexico (PDF, 55 KB)
  
  
• Basin States Proposal (February 3, 2006)
  
  Letter to the Secretary of the Interior (PDF, 122 KB)
  Attachment A: Preliminary Proposal from the Seven Basin States (PDF, 42 KB)
  Attachment B: Draft Agreement (PDF, 41 KB)
  
  
• Department of the Interior Decision - 2005 Annual Operating Plan Mid-Year Review (May 2, 2005)
       (PDF, 694 KB)

Background References


• Interim Surplus Criteria Final EIS
  
• Lower Colorado River Multi-Species Conservation Program Final Habitat Conservation Plan
  
• Lower Colorado Region Documents Archive

Webmaster: Colleen Dwyer, cdwyer@usbr.gov
Updated: December 2007