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Colorado River Basin Natural Flow and Salt Data
Current Natural Flow and Salt Data

Natural Flow & Salt Data Index
Natural Flow and Salt Data Home Page
Current Natural Flow and Salt Data
      Documentation
      Natural Flow Supporting Data
      Natural Salt Supporting Data

Previous Natural Flow and Salt Data

This natural flow data for the Colorado River Basin is currently being used for modeling purposes in the Colorado River Simulation System (CRSS).

Please note that even though natural flow data is termed "current," it is SUBJECT TO CHANGE over the entire record due to source data updates.

Presently, the consumptive uses and losses data from 2001-2005 used to compute natural flow are PROVISIONAL and will be revised in the future. These revisions will change the natural flow computation.

Regularly visit this website to ensure you are using the most current version of natural flow data.

CURRENT natural flow data 1906-2006 (Excel file, 2.8 MB) - Updated 6/16/08
      Upper Basin: CSU extensions and MHYDRO 1906-1970 combined with recompiled JPrairie 1971-2005
      Lower Basin: CSU extensions and March 1992 Reclamation report 1906-1970 combined with recompiled RCallejo 1971-2005

         1971-2005 flow data revisions (PDF file, 12 KB) resulting from changes identified during update through 2006
         1971-2004 flow data revisions (PDF file, 12 KB) resulting from changes identified during update through 2005
         1971-2003 flow data revisions (PDF file, 12 KB) resulting from changes identified during update through 2004


CURRENT natural salt mass data 1906-2006 - To be updated Sept 2008
    Upper Basin: Direct from regression based on 1971-2006 data
    Lower Basin: 1906-1970 direct from regression based on 1971-2006 data combined with recompiled RCallejo 1971-2006


CURRENT natural salt concentration data 1906-2006 - To be updated Sept 2008
    Upper Basin: Direct from regression based on 1971-2006 data
    Lower Basin: 1906-1970 direct from regression based on 1971-2006 data combined with recompiled RCallejo 1971-2006




Webmaster: Janie Jo Smith
Updated: September 2008