Streamflow, Drought, and Water Supply Conditions
Water supply conditions as of 11/15/2017
From Jacqueline Knutson, Hydrology Technician, Montana Fish, Wildlife and Parks
Snowpack: Winter came quickly this year and has given our snowpack a very strong start. October and early November snowfall has put the Jefferson basin at 191% of normal and the Big Hole Basin at 216% of normal for the water year which began on October 1st. These percentages can change quickly this early in the water year but so far things bode well for a good winter and solid snow totals for runoff if snow continues to accumulate this way as winter progresses. This time last year things were looking pretty abysmal with a very slow start to the snowpack as precipitation was coming in as rain; this is certainly not the case this year.
Period of Record Monthly Climate Summary – Period of Record : 01/01/1923 to 06/09/2016
See details below from Western Regional Climate Center:
WISDOM, MONTANA (249067)
|Average Max. Temperature (F)||26.4||31.1||38.5||49.2||60.3||68.6||79.4||77.8||67.6||55.0||38.0||28.0||51.7|
|Average Min. Temperature (F)||1.2||3.3||10.8||21.2||28.7||36.1||38.2||34.7||27.8||21.3||12.3||3.6||19.9|
|Average Total Precipitation (in.)||0.70||0.52||0.74||0.95||1.64||1.96||1.09||1.03||0.99||0.83||0.76||0.77||11.97|
|Average Total SnowFall (in.)||11.8||8.3||8.6||4.5||2.5||0.5||0.0||0.0||0.5||1.9||7.8||10.8||57.0|
|Average Snow Depth (in.)||9||10||8||1||0||0||0||0||0||0||2||5||3|
Percent of possible observations for period of record.
Max. Temp.: 98.7% Min. Temp.: 98.6% Precipitation: 98.6% Snowfall: 76.4% Snow Depth: 50.3%
National Water Supply Reports
Nation-wide information for water supply and climate prediction & forecasts.
Montana Water Supply Reports
Statewide information for water supply and drought conditions. Report breaks out conditions by major basins:
Water supply and drought condition information specific to the Upper Missouri Basin:
Past Streamflow & Snowpack Reports