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Snow and trees on mountain

Wyoming Snow Survey and Water Supply Forecasting

NRCS hydrologists manage a comprehensive network of manually-measured snow courses and automated Snow Telemetry (SNOTEL) monitoring sites throughout the West, manage the data collection process, and estimate the runoff that will occur when it melts.

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.

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

Wyoming Basin and Water Supply Outlook

February 1, 2023

Map screengrab of Wyoming Water report Feb 7 2023

Additional Snow Survey Information & Quick Links

Jeff Goats

State Soil Scientist

Jeff Coyle