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The Alaskan city received record snowfall in November 2023.

How much water is in mountain snowpack? That’s a question science has been attempting to solve for decades. Finally, NASA-developed technology provides an accurate answer, using a cutting-edge airborne sensor system and sophisticated software that also predicts when snow will melt.

The U.S. Bureau of Reclamation has announced $2.5 million of funding for 12 projects to advance snow measurement technology with the goal of improving water-supply forecasts.

Planet Earth should be named Planet Water, with 70% of its surface covered in ocean. Yet the freshwater that sustains our lives is a precious resource. NASA is at the forefront of monitoring it from every angle.

A potent storm pushed snowpack levels above normal across Colorado.

The lake's shores were dusted with white following recent wintry weather. It wasn’t snow, but thousands of polystyrene beads.

A storm brought wintry weather and the first significant snowfall of the season to the Rocky Mountains.

Nine atmospheric rivers dropped feet of rain and snow across California and the West Coast from late December to mid-January. The deluge caused deaths, landslides and flooding, but improved the drought situation across a large chunk of the western United States.

Flood risk across California is growing, partly thanks to storms producing more rain than snow. The updated Central Valley Flood Protection Plan plots a path to better flood management and infrastructure, especially in the most vulnerable communities of the Central Valley.

Mountain snow – a bank account for water across the western U.S. – has turned up insufficient funds this year. The Sierra Nevada snowpack melted nearly a month earlier than usual, leaving reservoirs without their usual inflow of freshwater.