Challenges
Hydrological and hydrographical data on the Danube is collected regularly and serves, inter alia, as planning foundation, as information for navigation and for the purpose of statistical analysis. For navigation especially riverbed surveying, as well as water level and flow measurement are of great importance. New surveying technologies as well as computer-based interpretation, modelling and presentation create new opportunities to optimise the acquisition of data and to extend the use of collected data.