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Streamflow Forecasts

Monthly Streamflow Forecasts

NRCS Quick Glance Idaho Streamflow Forecasts: (current year)
January 1 | February 1 | March 1 | April 1 | May 1 | June 1

Idaho Streamflow Forecast Maps: (current year)
January 1 | February 1 | March 1 | April 1 | May 1 | June 1     (for past years see Historic Data Page)

Regional Streamflow Forecast Maps: Columbia Basin | Western US

Water Supply Outlook for the Western US

Streamflow Forecast Probability Charts  (For selected stations in each state)

Guide to Interpreting Streamflow Forecasts

 

Daily Guidance Streamflow Forecasts Using SNOTEL Data

 

          Northern Idaho    |    Clearwater     |    Salmon    |    West Central

          Wood and Lost    |    Upper Snake   |    Southern Idaho

 

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 NRCS monthly forecasts, but to illustrate forecast trends using real time SNOTEL data. Monthly forecasts can be found here.

To learn more about these products please read: Daily Forecast Technical Note

Northern Idaho

Moyie River at Eastport

Current Water Year -   Percent & Skill  |    Exceedance Forecasts  |    Scatter Graphs  |   Excel Data
Past Results - 2014 | 2013 | 2012

Boundary Creek near Porthill

Current Water Year -   Percent & Skill  |    Exceedance Forecasts  |  Scatter GraphsExcel Data
Past Results - 2014 | 2013 | 2012

Clark Fork at St. Regis, MT

Percent & Skill  |  Exceedance Forecasts  |  Scatter Graphs  |  Excel Data

Priest River near Priest River

Current Water Year -   Percent & Skill  |    Exceedance Forecasts  |    Scatter Graphs  |  Excel Data
Past Results - 2014 | 2013 | 2012

North Fork Coeur d'Alene River

Current Water Year -   Percent & Skill  |    Exceedance Forecasts  |  Scatter Graphs  |  Excel Data
Past Results - 2014 | 2013 | 2012

St Joe at Calder

Percent & Skill  |  Exceedance Forecasts  |  Scatter Graphs  |  Excel Data
Past Results - 2014 | 2013 | 2012

Spokane River near Post Falls

Percent & Skill  |  Exceedance Forecasts  |  Scatter Graphs  |  Excel Data
Past Results - 2014 | 2013 | 2012

Clearwater Basin

Clearwater River at Orofino

Percent & Skill  |  Exceedance Forecasts  |  Scatter Graphs  |  Excel Data
Past Results - 2014

Dworshak Reservoir Inflow 

User Info  |  Percent & Skill  |  Exceedance Forecasts  |  Scatter Graphs  |  Excel Data
Past Results - 2014 | 2013 | 2012 | 2011 | 2010 | 2009 | 2008 | 2007

Lochsa River at Lowell

Percent & Skill  |  Exceedance Forecasts  |  Scatter Graphs  |  Excel Data
Past Results - 2014

Selway River at Lowell

Percent & Skill  |  Exceedance Forecasts  |  Scatter Graphs  |  Excel Data
Past Results - 2014

Salmon Basin

Lemhi River near Lemhi

Percent & Skill  |  Exceedance Forecasts  |  Scatter Graphs  |  Excel Data
Past Results - 2014 | 2013 | 2012

Middle Fork Salmon River at Middle Fork Lodge

Percent & Skill  |  Exceedance Forecasts  |  Scatter Graphs  |  Excel Data
Past Results - 2014 | 2013 | 2012

Salmon River at Salmon

Percent & Skill  |  Exceedance Forecasts  |  Scatter Graphs  |  Excel Data
Past Results - 2014

Salmon River at White Bird

User Info  |  Percent & Skill  |  Exceedance Forecasts  |  Scatter Graphs  |  Excel Data
Past Results - 2014 | 2013 | 2012 | 2011 | 2010 | 2009

West Central Idaho

Payette River near Horseshoe Bend

Percent & Skill  |  Exceedance Forecasts  |  Scatter Graphs  |  Excel Data
Past Results - 2014 | 2012

North Fork Payette River near Banks

Percent & Skill  |  Exceedance Forecasts  |  Scatter Graphs  |  Excel Data
Past Results - 2014

North Fork Payette River at Cascade

Percent & Skill  |  Exceedance Forecasts  |  Scatter Graphs  |  Excel Data
Past Results - 2014

South Fork Payette River near Lowman

Percent & Skill  |  Exceedance Forecasts  |  Scatter Graphs  |  Excel Data
Past Results - 2014

Boise River near Boise

User Info  |  Percent & Skill  |  Exceedance Forecasts  |  Scatter Graphs  |  Excel Data
Past Results - 2014 | 2013 | 2012 | 2011 | 2010 | 2009 | 2008 | 2007

Wood and Lost Basins

Big Wood River near Hailey

User Info  |  Percent & Skill  |  Exceedance Forecasts  |  Scatter Graphs  |  Excel Data
Past Results - 2014 | 2013 | 2012 | 2011 | 2010 | 2009

Little Wood River near Carey

User Info  |  Percent & Skill  |  Exceedance Forecasts  |  Scatter Graphs  |  Excel Data
Past Results - 2014 | 2013 | 2012 | 2011 | 2010 | 2009 | 2008 | 2007

Big Lost River below Mackay Reservoir near Mackay

User Info  |  Percent & Skill  |  Exceedance Forecasts  |  Scatter Graphs  |  Excel Data
Past Results - 2014 | 2013 | 2012 | 2011 | 2010 | 2009 | 2008 | 2007

Little Lost below Wet Creek near Howe

Percent & Skill  |  Exceedance Forecasts  |  Scatter Graphs  |  Excel Data
Past Results - 2014 | 2013 | 2012

Upper Snake Basin

Teton River near Driggs

User Info  |  Percent & Skill  |  Exceedance Forecasts  |  Scatter Graphs  |  Excel Data
Past Results - 2014 | 2013 | 2012 | 2011 | 2010 | 2009

Henrys Fork near Rexburg

Percent & Skill  |  Exceedance Forecasts  |  Scatter Graphs  |  Excel Data
Past Results - 2014 | 2013 | 2012

Snake River near Heise

User Info  |  Percent & Skill  |  Exceedance Forecasts  |  Scatter Graphs  |  Excel Data
Past Results - 2014 | 2013 | 2012 | 2011 | 2010 | 2009 | 2008 | 2007

Snake River at Neeley

Percent & Skill  |  Exceedance Forecasts  |  Scatter Graphs  |  Excel Data
Past Results - 2014 | 2013 | 2012

Willow Creek near Ririe

Percent & Skill  |  Exceedance Forecasts  |  Scatter Graphs  |  Excel Data
Past Results - 2014 | 2012

Southern Idaho

Oakley Reservoir Inflow

User Info  |  Percent & Skill  |  Exceedance Forecasts  |  Scatter Graphs  |  Excel Data
Past Results - 2014 | 2013 | 2012 | 2011 | 2010 | 2009 | 2008 | 2007

Goose Creek

Percent & Skill  |  Exceedance Forecasts  |  Scatter Graphs  |  Excel Data
Past Results - 2014

Trapper Creek

Percent & Skill  |  Exceedance Forecasts  |  Scatter Graphs  |  Excel Data
Past Results - 2014

Salmon Falls Creek near San Jacinto, NV

User Info  |  Percent & Skill  |  Exceedance Forecasts  |  Scatter Graphs  |  Excel Data
Past Results - 2014 | 2013 | 2012 | 2011 | 2010 | 2009 | 2008 | 2007

Bruneau River near Hot Springs

User Info  |  Percent & Skill  |  Exceedance Forecasts  |  Scatter Graphs  |  Excel Data
Past Results - 2014 | 2013 | 2012 | 2011 | 2010 | 2009

Reynolds Creek at Tollgate

Percent & Skill  |  Exceedance Forecasts  |  Scatter Graphs  |  Excel Data
Past Results - 2014 | 2013 | 2012

Oywhee River near Rome, OR

Percent & Skill  |  Exceedance Forecasts  |  Scatter Graphs  |  Excel Data
Past Results - 2014 | 2013 | 2012

Owyhee River near Gold Creek

Percent & Skill  |  Exceedance Forecasts  |  Scatter Graphs  |  Excel Data
Past Results - 2014

Bear River below Stewart Dam

User Info  |  Percent & Skill  |  Exceedance Forecasts  |  Scatter Graphs  |  Excel Data
Past Results - 2014 | 2013 | 2012 | 2011 | 2010 | 2009 | 2008 | 2007

Smiths Fork near Border

Percent & Skill  |  Exceedance Forecasts  |  Scatter Graphs  |  Excel Data
Past Results - 2014

Other Daily Guidance Forecast Resources

All Western U.S. Daily Guidance Forecasts

Summary spreadsheet showing daily and weekly changes to forecast