Snow Water Supply Forecasting Program Reauthorization Act of 2025

This bill reauthorizes the Snow Water Supply Forecasting Program through 2031, updating its focus to prioritize integrated snowpack measurement and advanced modeling technologies. It shifts emphasis from basic data collection to tools like machine learning, imaging spectroscopy, and hydrologic modeling to improve water supply forecasts. The program’s annual funding is reduced to $6.5 million (from $15 million over five years), requiring annual reports on basin applications and technology effectiveness. It directly affects water managers and agencies in snowmelt-dependent regions, particularly those making multi-state or multi-basin water decisions.