The SnowBall project will deliver a prototype snow monitoring system that combines daily satellite data (e.g. Sentinel-1 and Sentinel-3) with in-situ weather station observations and state-of-the- art snowpack and climate modelling. Three important applications of snow monitoring will be demonstrated: hydrological modelling, snow-melt induced flash flood warning and snow avalanche warning. The project will also assess the impact of snow under present and future climate conditions on: flash flood statistics due to snow melt contributions, avalanche statistics and groundwater.