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SNOTEL site in deep snow

Snow and Water Interactive Map

Welcome to the National Water and Climate Center's Snow and Water Interactive Map, a groundbreaking tool designed to provide farmers, researchers, policymakers, and water management professionals with up-to-the-minute snow survey data and water supply forecasting.  

U.S. Department of Agriculture’s (USDA) Natural Resource Conservation Service (NRCS) snow surveyors approach a snowpack telemetry site (SNOTEL) on Mount Hood, OR. SNOTEL sites allow NRCS to predict the amount of spring and summer snowmelt in twelve Western states where 50 to 80 percent of all the water used comes from snowmelt. USDA NRCS snow surveyors check each site at least once a year to perform routine maintenance.

Realtime and historical snow and climate data

Unveil the Insights Hidden in Snow with Our Interactive Map.

Predefined Maps: Station and/or Basin Conditions

To help you get started with the Interactive Map, here are links to predefined maps organized by data type. After opening a map, you can zoom to your area of interest, customize the map, and then bookmark the URL to save your settings. Show current conditions for stations, basins or both.




Reservoir Storage

Forecast Verification

Soil Moisture/Temperature

Predefined Maps: Station Inventory

Identify stations by data type, location, network

Snowpack and Precipitation Index Maps

The Basin Filled GIS Maps are being retired and will no longer be updated or available. The National Water and Climate Center now provides similar information in an updated format by state and content. Links to these new maps can be found on the page Snowpack and Precipitation Index Maps.