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The main rivers which drain the east and southeast side of the Eastern Carpathians and those that drain the Southern Carpathians have been analysed regarding the sediment transit, the change of the riverbeds and the type of channel deposits. In this paper, attention is focused on the concavity of the stream profile. On this basis, we tried to determine the evolution of some Carpathian rivers and thus estimate their long-term evolutionary tendencies. The concavity index of the east-Carpathian rivers shows a trend to increase from north to south from the Eastern Carpathians to the Carpathian Bend and the Bucegi Mountains. The explanation of this situation required a review of the evolutionary stages of the Eastern Carpathians, in order to establish the age and the evolutionary tendencies of the river network in our study area: the Rivers Suceava, Moldova and Bistriţa have followed the same courses since the …