Estimation of Changes in Sediment Transport along the Free-Flowing Middle Danube River Reach

The subject of this study is an approximately 300 km long Middle Danube River reach that spans from river kilometer (rkm) 1581 in Hungary to 1255 Serbia. observed drying floodplains some thirty years ago initiated the hydrological studies. However, problems related navigation route maintenance and those water supply irrigation drainage canal networks are now present whole free-flowing middle region. aims at investigating correlation between level decrease recorded incision bed gauging stations indirect estimation long-term sediment transport along sand-bed based on surveillance cross-sections’ data collected during regular monitoring surveys navigable Danube. It starts with analyses 70-year-long time series discharge yearly continues morphological ends transport. decreasing trend levels increasing cross-sectional areas persistent. There a linear two. Longitudinal changes indicate existence both degrading aggrading riverbed reaches.