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Established  In 1923

New Website Coming

in December 2020.

Product Highlights

New Monthly Interactive Map Products Now Available

Monthly data, collected from SNOTEL sites, Snow Courses (manual measurements), COOP weather stations and other sources, summarizes the first of month conditions for river basins across Montana, Wyoming and South Dakota. Use the monthly tab in the main menu bar to access monthly products which replace the legacy Water Supply Outlook Report and associated maps and tables.

Daily River Basin Summaries Are Live

Let's face it. Sometimes you're only interested in one specific area and dont want to sort through a bunch of different webpages to get the information you need. By using the River Basin Data Tab at the top of the page you can now view information specific to your area of interest. You can also quickly navigate to other river basins, should you opt to expand your horizons.  

Montana Data Collection Office Competes Upgrades to New Telemetry At All SNOTEL Sites

After beta testing multiple new types of telemetry to transmit critical mountain snowpack and precipitation information, the Montana Data Collection Office has completed the transition of all of it's network to a combination of GOES (Geostationary Orbiting Environmental Satellite) Satellite Transmitters and Cellular Modems. This transition will ensure timely collection of data from these sites, while offering improved performance and reliability over the aging Meteorburst Communication Systems in use. 

More information on the GOES System can be found here:

https://www.goes-r.gov/multimedia/factSheets/GOES-R_Series_UPSComms_fact_sheet.pdf

Montana Data Collection Office Competes Upgrades to New Telemetry At All SNOTEL Sites

After beta testing multiple new types of telemetry to transmit critical mountain snowpack and precipitation information, the Montana Data Collection Office has completed the transition of all of it's network to a combination of GOES (Geostationary Orbiting Environmental Satellite) Satellite Transmitters and Cellular Modems. This transition will ensure timely collection of data from these sites, while offering improved performance and reliability over the aging Meteorburst Communication Systems in use. 

More information on the GOES System can be found here:

https://www.goes-r.gov/multimedia/factSheets/GOES-R_Series_UPSComms_fact_sheet.pdf

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Daily Products

State-Wide Maps, Graphics and Reports of Snow Water Equivalent, Precipitation, Air Temperature and Soil Moisture

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State-Wide Products

State-Wide Maps and Reports of Monthly Snow Water Equivalent, Precipitation, Reservoir Storage and Streamflow Forecasts

Water Supply 

Forecasted Streamflow for Spring and Summer and a Summary of State-Wide Conditions

Interactive Map

Use the NRCS Interactive Map to Browse Multiple Data Types for all Western States

The Unofficial Montana Snow Survey