The Pantanal is a tectonically active basin, with several evidences of recent tectonic activity, as the occurrence of earthquakes and the presence of active structural lineaments. It is noted that these activities have directly influenced the evolution and landscape configuration of the region and, in this sense, to contribute to the discussion on the influence of tectonic activities in the Pantanal region, this study aimed to present evidence of structural control on the hydrography of the region. For this, the hydrography data provided by the National Water Agency were analyzed (ANA), as well as the structural lineaments. As observed results were the big difference between the Pantanal drainage pattern and its surroundings with the change of the tributary drainage pattern on the plateau region for the distributary one when entering the plain. And also the asymmetrical drainage pattern of all the watersheds and, finally, the structural conditioning of the main rivers that form the Pantanal. We conclude that the tectonic activity has a predominant role in conditioning the main rivers of the Pantanal and, therefore, throughout the Pantanal basin, since all major rivers have structural control.
