Snow plays a crucial role in Europe’s hydrological cycle, influencing water availability,river runoff, and seasonal storage in mountain and northern regions that support bothnational and transboundary water systems. This study examines key snow-relatedprocesses including snowfall, snow cover fraction, and snow water equivalent acrossEurope. Stochastic approaches are applied to quantify long-term persistencecharacteristics in snow and hydrological processes. Synthetic scenarios are furthergenerated to assess potential responses of snow under regional warming. Theresults are expected to provide insights into European snow dynamics and their rolein shaping seasonal streamflow and water availability. This study offers a Europe-wide stochastic perspective on cryosphere–hydrosphere interactions under climatevariability, where changes in snow storage and melt dynamics can affect hydropowerproduction, agricultural water demand, and drinking water supply.