Skip Navigation

Snow Survey

Wyoming Snow Survey Program

Image of snow crystal and water droplet

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.

...More About Snow Surveys

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

Snow Survey Data, Products, and Reports

Photo of snow crystal
Snow & Precipitation

Current Water Year  |  Historic Data  |  30-Year Averages

Photo of reservoir
Water Supply

Streamflow forecasts, reservoir storage, surface water supply index, etc...

Photo of standard SNOTEL site
Site Information

Data site locations, descriptions, etc...

Image of clouds


Photo of snowboarder

Weekly snow depth reports

Additional Snow Survey Information