Map: daily nationwide snowpack

This map shows daily snowpack estimates for the contiguous United States since October 2003. Using the dropdown menu above the chart – or clicking a state on the map – redraws the chart to show the snowpack estimate by day for the selected state. 

This data set contains output from the National Weather Service’s National Operational Hydrologic Remote Sensing Center (NOHRSC) SNOw Data Assimilation System (SNODAS). SNODAS is a modeling and data assimilation system developed by NOHRSC to provide the best possible estimates of snow cover and associated parameters to support hydrologic modeling and analysis.

Nationwide Map

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Year by Year Comparison Graph

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See this post to learn more about this dashboard and other interactive visualizations.

The Water Desk’s mission is to increase the volume, depth and power of journalism connected to Western water issues. We're an initiative of the Center for Environmental Journalism at the University of Colorado Boulder. The Water Desk launched in April 2019 with support from the Walton Family Foundation. We maintain a strict editorial firewall between our funders and our journalism. The Water Desk is seeking additional funding to build and sustain the initiative.