Basin Outlook Reports
(Montana Water Supply Outlook Reports)
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Water Year 2015
February 1, 2015 (PDF; 2,262 KB) - Snowpack percentages drop from above normal to near normal due to lack of snow and above average temperatures.
January 1, 2015 (PDF; 2,364KB) - After a slow start to winter, holiday storms build Montana's snowpack.
Water Year 2014
June 1, 2014 (PDF; 2,970 KB) - Transition to snowmelt at all elevations during May causes peaks in rivers across Montana.
May 1, 2014 (PDF; 2,209 KB) - As Mountain Snowpack Transitions Into Spring, Runoff Should Be Monitored.
April 1, 2014 (PDF; 2,783KB) - Snowpack & runoff require watchful eye this spring.
March 1, 2014 (PDF; 3,710 KB) - Statewide improvement make for excellent water supply outlook.
February 1, 2014 (PDF; 2,118 KB) - Current conditions support near normal 2014 runoff streamflow predictions.
January 1, 2014 (PDF; 3,573 KB) - Fall's cold temperatures preserve snowpack for strong start and January 1.
Water Year 2013
June 1, 2013 (PDF; 2,423 KB) - Transition to spring is in full swing, with less snowpack than usual. Expect below average streamflows this summer.
May 1, 2013 (PDF; 2,424 KB) - April showers bring snow & cooler temperature across Montana.
April 1, 2013 (PDF; 2,461KB) - Northern reaches of the state improve slightly, elsewhere continues downward slide.
March 1, 2013 (PDF; 3,861 KB) - Another slight decrease through February leaves snowpack a little further below, yet still near, average.
February 1, 2013 (PDF; 3,410 KB) - Snowpack slid just below normal this January despite two significant storm patterns, dryness prevailed.
January 1, 2013 (PDF; 1,781 KB) - Statewide conditions reflect near normal snowpack and precipitation to ring in the new year.
Water Year 2012
June 1, 2012 (PDF; 2,298 KB) - Late May snowstorm and periodic cold spells improve remaining snowpack.
May 1, 2012 (PDF; 8,038 KB) - Record-setting April temperatures drove snowpack to below average levels.
April 1, 2012 (PDF; 8,252 KB) - State-wide snowpack increases to slightly above average while Yellowstone River Basin starts early snowmelt.
March 1, 2012 (PDF; 8,236 KB) - Southwest Montana's increase in snowpack during February was the only difference from last month's slight statewide snowpack increases.
February 1, 2012 (PDF; 4,468 KB) - January started off warm and dry until an upper level trough materialized and brought more seasonable precipitation and temperatures to the state.
January 1, 2012 (PDF; 9,850 KB) - The month of December yielded well below average precipitation with state-wide snowpack ending the month near 80 percent of average.
Supporting information for the Water Supply Outlook Report