Water Supply & Reservoir Storage

• Idaho and ALL Western States WSOR  (current & historic reports available - HTML and text versions)
• Idaho WSOR in Adobe PDF format

  The following documents require Adobe Acrobat.
  Select WSOR by Month and Year    Jun 2009 (303 KB) May 2009 (255 KB) Apr 2009 (278 KB) Mar 2009 (525 KB) Feb 2009 (476 KB) Jan 2009 (628 KB) Jan 2008 (555 KB) Feb 2008 (495 KB) Mar 2008 (600 KB) Apr 2008 (524 KB) May 2008 (294 KB) Jun 2008 (515 KB) Jan 2007 (316 KB) Feb 2007 (185 KB) Mar 2007 (325 KB) Apr 2007 (247 KB) May 2007 (353 KB) Jun 2007 (311 KB) Jan 2006 (203 KB) Feb 2006 (304 KB) Mar 2006 (264 KB) Apr 2006 (506 KB) May 2006 (596 KB) Jun 2006 (360 KB) Jan 2005 (217 KB) Feb 2005 (190 KB) Mar 2005 (287 KB) Apr 2005 (223 KB) May 2005 (431 KB) Jun 2005 (427 KB) Jan 2004 (228 KB) Feb 2004 (331 KB) Mar 2004 (544 KB) Apr 2004 (295 KB) May 2004 (182 KB) Jun 2004 (182 KB) Jan 2003 (1.6 MB) Feb 2003 (356 KB) Mar 2003 (652 KB) Apr 2003 (498 KB) May 2003 (389 KB) Jun 2003 (591 KB) Jan 2002 (1.2 MB) Feb 2002 (1.7 MB) Mar 2002 (372 KB) Apr 2002 (612 KB) May 2002 (782 KB) Jun 2002 (421 KB)
  Idaho WSOR Streamflow Adjustments and Reservoir Capacity Definitions (167 KB)

• Idaho WSOR Email Notification - To receive email notification when the latest issue has been published to the web please contact us.
• Snow Survey Water Supply News

  The following document requires Adobe Acrobat.
  
  Idaho 2008 Fall Water Supply Summary and 2009 Water Supply Outlook  (74KB)

Drought and Surface Water Supply Index (SWSI)

Streamflow Forecasts

• 2008 Idaho Streamflow Forecast Review

  The following document requires Adobe Acrobat.
  
  2008 Idaho Streamflow Review (318KB)

• NRCS Quick Glance Idaho Streamflow Forecasts (current year)
  • January 1 | February 1 | March 1 | April 1 | May 1 | June 1
  
  
  • January 15 | February 15 | March 15 | April 15 | May 15 | June 15
• NRCS/NWS Coordinated Streamflow Forecasts (current year)
  • January 1 | February 1 | March 1 | April 1 | May 1 | June 1
  
  

• Daily Guidance Streamflow Forecasts Using SNOTEL Data - New Format

  Disclaimer:  The Daily Seasonal Water Supply Forecast Guidance Product is a completely automated product based on SNOTEL data.  This product is not meant to replace or supersede the official forecasts produced in coordination with the National Weather Service.

• Water Supply Outlook for the Western US
• Streamflow Forecast Probability Charts  (For selected stations in each state)

• Guide to Interpreting Streamflow Forecasts

• 2009 Water Year Monthly Streamflow Totals for Idaho and Surrounding States
• Idaho | Montana | Wyoming | Nevada | Oregon | Washington
• 2008 Water Year Monthly Streamflow Totals for Idaho and Surrounding States
• Idaho | Montana | Wyoming | Nevada | Oregon | Washington

Reservoir Storage

• Current Idaho Reservoir Storage Graphic
• Current Western US Reservoir Storage Graphic
• Historic Western US Reservoir Storage Graphics
• Monthly Reservoir Reports  (Format types: BARE, BARS)


• 2009 Water Year End of Month Reservoir Storage Totals for Idaho and Surrounding States
• Idaho | Montana | Wyoming | Nevada | Oregon | Washington


• 2008 Water Year End of Month Reservoir Storage Totals for Idaho and Surrounding States
• Idaho | Montana | Wyoming | Nevada | Oregon | Washington
• Idaho Reservoir Capacity Definitions and Streamflow Adjustments (as published in WSOR)

  The following document requires Adobe Acrobat.
  
  Idaho Streamflow Adjustments and Reservoir Capacity Definitions (34KB)



• Links to Some Idaho Reservoir Levels Provided by Other Agencies

• Idaho First of Month Snowpack Maps
• Idaho First of Month Streamflow Forecast Maps
• Western US Streamflow Forecast Maps  

The following document requires Adobe Acrobat.

How NRCS Snow Survey Data and Products are Used (Dec. 2006) (883 KB)
Uses of NRCS Snow Survey Data and Products (April 2007) (871 KB)
Powerpoint presentation of Uses of NRCS Snow Survey Data and Products (April 2007) (5 MB)

Last Modified: 06/04/2009