The aim of the AWARE project was to provide innovative tools for monitoring and predicting of water availability and distribution in those drainage basins where snowmelt is a major component of the annual water balance, a common condition in Alpine catchments. The project developed appropriate mathematical models to represent snow-pack dynamics and snowmelt runoff. These models were expressly designed to integrate Earth Observation data and in-situ hydrological and meteorological measurements, introducing therefore a novel approach to the representation of the involved physical pro cesses in time and space.