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The Administrative Record of Interim Guidelines

October 15, 2018
by John Weisheit

March 5, 2005

April 18, 2005 - Letter from the Upper Basin States to the Secretary of Interior

May 2, 2005 - Mid-Year Review of Annual Operating Plan

June 9, 2005
June 15, 2005
June 15, 2005
June 16, 2005
July 18, 2005
July 18, 2005
July 22, 2005
July 25, 2005
July 25, 2005
July 25, 2005
July 26 & 28, 2005
July 26, 2005
July 29, 2005
July 30, 2000
August 25, 2005
September 20, 2005
September 30, 2005
September 30, 2005
October, 2005
November, 2005
February 01, 2006
February 6, 2006
February, 2006
March 7, 2006
March 2006
March, 2006
March 31, 2006
June, 2006
July 7, 2006
July 13, 2006
Draft Alternatives Summary
September 18, 2006
February 28, 2007
Feruary 28, 2007
February 28, 2007
February, 2007
March, 2007
April, 2007
April, 2007
May 4, 2007
June 15, 2007
June 18, 2007
October, 2007 - Reclamation releases the Final EIS
December 13, 2007
February 12, 2008

December 18, 2020 - 7.D. Review of Interim Guidelines

CONCLUSION
  • The most useful graphic from the Final EIS of 2007 Interim Guidelines. Lake Mead scenarios that seriously challenge hydropower operations: Colorado River System Simulation (CRSS); baseline data is the hydrologic record of the 20th century; three traces juxtaposed with the 10th, 50th and 90th percentiles, under No Action Alternative (business-as-usual) and to Year 2060. Here is the Lake Powell graphic which indicate a range of scenarios from serious challenges for flood control to curtailments of hydropower. A system failure will eventually happen long before sediment fill compromises water storage and flood control. The management of the hydrologic extremes is the imperative for dam operations, not the statistical norm. Until full adaptation to this imperative is accomplished, the system will be compromised. Interim guidelines is scheduled to be replaced before December 31, 2025. If the replacement document is more of the same, the Reclamation Era ends and its place in history will be bookmarked as an unsuccessful social experiment.
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USEFUL GRAPHICS

ADDITIONAL RECLAMATION REFERENCE MATERIALS

INSTRUMENT GAGE STREAMFLOW DATA
PALEO STREAMFLOW DATA
RESERVOIR DATA
HISTORIC TEMPERATURE DATA
ADDITIONAL INFORMATION
REFERENCES




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