Montana River Forecasts — Updated Weekly

Snowmelt-driven discharge models using USGS observations and NRCS SNOTEL data

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Methodology: Weekly discharge forecasts use SWE-analog blending models calibrated on 35+ years of USGS daily discharge and NRCS SNOTEL snow water equivalent data. Model skill is validated via leave-one-out cross-validation; forecasts are shown only within the validated skill horizon for each river.
Data sources: USGS Water Data API • NRCS SNOTEL AWDB