This bill amends the existing Snow Water Supply Forecasting Program Authorization Act, renaming it the Snow Water Supply Forecasting Reauthorization Act of 2025 . Its primary purpose is to update and reauthorize the program, shifting its focus towards the deployment and integration of advanced technologies for snowpack measurement and modeling. The legislation revises the program's objectives to prioritize technologies that provide complete integration of accurate, timely, and spatially complete snowpack measurements and models. Specific examples of these technologies include airborne laser altimetry , imaging spectroscopy , and integrated physics-based snowpack and hydrologic modeling . It also removes a previous reporting requirement, streamlining the program's operational framework. The reauthorized program will concentrate on activities that enhance snow and water supply forecasting results, making them more responsive to changing environmental conditions. It emphasizes the real-time integration of these activities with water supply forecasts, particularly to inform critical water management decisions, including those affecting interstate water resources. The bill also explicitly includes collaboration with other federal agencies, such as the National Oceanic and Atmospheric Administration and the Natural Resources Conservation Service. Finally, the bill authorizes appropriations of $6,500,000 for each of fiscal years 2027 through 2031 to support these enhanced forecasting efforts.