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A delimitacao morfometrica da Bacia Hidrografica e de suma importância para a compreensao do seu comportamento dinâmico diante do ciclo hidrologico. E com o avanco das ferramentas computacionais a delimitacao dessas bacias tornou-se ainda mais facil. O objetivo deste trabalho e delimitar a Bacia Hidrografica do Rio Santo Antonio fazendo uso da ferramenta de delimitacao automatica do TauDEM, ( Terrain Analysis Using Digital Elevation Models), um conjunto de ferramentas para construcao de analises hidrologicas com base nos Modelos Digitais de Elevacao (MDEs), bem como apresentar as principais caracteristicas morfometricas desta bacia. A B S T R A C T The morphometric delimitation of the Hydrographic Basin is of paramount importance for the understanding of its dynamic behavior before the hydrological cycle. Through morphometry it is possible to determine parameters that indicate the behavior of the watershed, such as flood potential. And with the advancement of computational tools the delimitation of these basins has become even easier. The objective of this work is to delimit the Santo Antonio River Basin using the TauDEM automatic delimitation tool, a set of tools for the construction of hydrological analyzes based on Digital Elevation Models, as well as to present the main morphometric characteristics of this basin. The drainage area was 3,137.41 km 2 and the perimeter was 499.48 km. In general, it was verified that the area of the basin has a more elongated shape, with low potential for flood occurrence. The drainage network of the basin has medium capacity for the emergence of new water courses and presents a reasonably low surface runoff, much due to its flatter characteristics. Its relief is smooth and with slopes, which mostly vary from 0 to 3.6% which classifies the flat or gently undulating elevation, which slightly impairs the flow. In view of the obtained results it can be concluded that the TauDEM tool is very efficient for automatic delimitation of Hydrographic Basins. Keywords: hydrographic basin; morphometry; TauDEM.

revista brasileira de geografia física

Delimitação da bacia hidrográfica do Rio Santo Antônio pela ferramenta de delimitação automática TauDEM (Watershed delimitation of the Santo Antonio river for TauDEM automatic delimitation tools)