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The floodplain sections along the Matos River vary in form and origin. The aim of the present study is to identify the different floodplain evolutionary types along the Maros from Lipova to Szeged. Horizontal floodplain aggradation is typical along the Maros, as 74% of the studied length develops via lateral channel migration, thus 25 km2 of the floodplain evolved by point-bar development between 1881 and 2014. Islands also merge into the banks, increasing the area of floodplains by 1.8 km2. The third process contributing in horizontal accretion is channel narrowing: the Maros became narrower by 37% since 1881, increasing the area of floodplains by 9 km". In the meantime, due to intensive gravel extraction from the channel, the riverbed incised by 5.6-Ó.3 m. Thus, upstream of Arad, the floodplain sections became disconnected from the river and their development was terminated. [ABSTRACT FROM AUTHOR]