The Danube River is subject to multiple use. Impacts on sediment regime (retention in catchment areas, sediment continuum interruption) as well as river regulation result in major problems for the management. Water storage silt up and in free-flowing sections river bed degradation occurs (east of Vienna approx. 2 cm/yr, continuous morphological changes in the whole Hungarian reach). Regulations cause a lack of river-morphological structures leading to deterioration of the ecological status. There are critical areas for navigation (e.g. problems in the navigable depth in fords). This implies the necessity to analyze sediment transport. However no harmonized monitoring-, measuring- and modeling techniques exist between Austria and Hungary. Therefore various measurement and modeling systems regarding river monitoring as well as inadequate laboratory equipment for hydraulic model experiments (laboratory discharge too low) are used.