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Snow Survey

Colorado Snow Survey Program

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The NRCS Snow Survey Program provides mountain snowpack data and streamflow forecasts for the western United States. Common applications of snow survey products include water supply management, flood control, climate modeling, recreation, and conservation planning.

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Interim Issue Resolution: Air Temperature Data Bias

The extended range air temperature sensors used at SNOTEL sites in the continental U.S. calculate temperature from sensor output voltage using a linear least-squares regression algorithm. It has been determined that use of the linear least-squares regression algorithm has resulted in a data bias.

The Snow Survey and Water Supply Forecasting Program is actively working on a correction technique for this issue. 


More Information: Air Temperature Bias Correction Metadata and Resources


Website Under Construction

Please be advised that our website is going through a transition period due to changes in IT infrastructure. As we transition, many of our old products have been replaced with new products that will update more reliably and are interactive. During this process links will change. Lists of all of our current products can be found at the following links: Snow, Precipitation, Water Supply.


Current Colorado Snowpack Conditions

Calculating statewide value....

Colorado SNOTEL Current Snow Water Equivalent (SWE) % of Normal





Snow Water Equivalent Plot




Snow Survey Data, Products, and Reports

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Current and historic snowpack data, reports, maps, and graphs

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Current and historic precipitation data, reports, maps, and graphs

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Water Supply

Water Supply Outlook Reports, streamflow forecasts, reservoir storage, surface water supply index, etc...

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Site Information

SNOTEL and Snow Course site locations, descriptions, normals, etc...

Interactive Map

Interactive SNOTEL Map View current and historic precipitation, snow water equivalent, and snow depth data for SNOTEL sites. View streamflow, reservoir storage, and precipitation data for cooperator stations. Map Help

Other Data Query Tools

Additional Snow Survey Information