This bill updates a federal program that predicts water supply from mountain snowpack. It requires the program to use modern measurement tools and real-time computer models, and it funds the work at $3 million a year through 2031.
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Snow Water Supply Forecasting Reauthorization Act of 2025 is a Senate bill in committee. The latest recorded action: Committee on Energy and Natural Resources Subcommittee on Water and Power. Hearings held.
Latest action on H.R. 3857: Committee on Energy and Natural Resources Subcommittee on Water and Power. Hearings held.
Who this affects: This bill mainly affects federal science agencies, state and local water managers, and communities that depend on snowmelt for their water supply. It could also matter for tribes and local governments that partner with federal agencies on water data.
Why this matters: Snowpack is the main water source for much of the West — when it melts, it fills the rivers and reservoirs that supply cities, farms, power plants, and ecosystems. More accurate forecasts help water managers decide when to store, release, or conserve water, which matters more as droughts and extreme weather become less predictable. This bill pushes the program toward modern tools that could make those forecasts faster and more useful for real decisions.
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