Holger Sdunnus, CEO of etamax, was the European Satellite Navigation Competition finalist for the region of Hesse in 2006, with his G-WaLe system, a Galileo-Assisted measurement system of water levels. G-Wale is a GALILEO-based system that enables enhanced forecasting of river floods and calibration of river models. Based on data provided by a network of water-borne GALILEO receivers deployed in a river, G-WaLe generates the water level profile of a given river sector with high temporal and spatial resolution. Depending on the actual situation, this data is used to calibrate river models or assist crisis management. For more information http://www.etamax.de.