This master thesis contributes to the research project “Enough wood for city and river? Vienna`s wood resources in dynamic Danube floodplains”. The analyses are based on GIS-reconstructions of the river morphological state of the Danube River in Vienna, for which numerous historical maps were used. In the thesis, two situations of the Viennese river landscape in 1805 and 1825 were prepared using ArcGIS 10 as a supplement to the already existing reconstructions between 1529 and 2010. The results of the analysis show the annual aggradation and erosion rates of the floodplain terrain, the turnover of different types of aquatic habitats, as well as the intensity of regulation and the age structure of the vegetation sites around 1825. Before the systematic channelization, the alluvial Danube River in Vienna was an anabranched river with a complex network of channels, numerous dynamic sand and gravel bars and large, stable islands. Due to the intense aggradation and erosion processes the floodplain terrain was characterized by morphologically young (1 45 years old) and middle-aged vegetation sites (45 160 years old). Accordingly, 25% of the land area in the whole riparian zone were younger than 50 years. Further 25% of the floodplain area were around 50 to 300 years old. The Simmeringer Haide, Leopoldstadt, parts of Brigittenau and Prater as well as territories north of the Danube River belonged to the oldest locations. After 1825, the natural river system and its riparian vegetation were continuously altered due to the progress of the river channelization. In 1875, the Danube River in Vienna was completely regulated.