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Rem: Revista Escola de Minas

Print version ISSN 0370-4467

Abstract

ELESBON, Abrahão Alexandre Alden; GUEDES, Hugo Alexandre Soares; SILVA, Demetrius David da  and  OLIVEIRA, Iara de Castro e. Use of SRTM data and GIS platform in the morphometric characterization of the watershed of the North tributary of São Mateus River - Brazil. Rem: Rev. Esc. Minas [online]. 2011, vol.64, n.3, pp.281-288. ISSN 0370-4467.  http://dx.doi.org/10.1590/S0370-44672011000300005.

The delineation of a watershed and it's morphometric characterization procedures are commonly used in environmental and hydrological analysis. The advent and consolidation of Geographic Information Systems (GIS) and the improvement in the generation of Digital Elevation Models (DEM’s) have contributed significantly to the development of automatic methodologies to obtain explanatory variables in a more efficient and reliable manner, ensuring scientific reproducibility. The objective of this study was to generate a Conditioning Hydrographic Digital Elevation Model (CHDEM) for the basin of the northern tributary of the São Mateus River, from the SRTM remote data. Generated the CHDEM for the studied area, we obtained the following morphometric characteristics: drainage area, perimeter, shape of the basin (Kc, Kf), prioritization of water courses, drainage density, density of intersections, an average slope for the basin, average elevation of the basin and slope of the main water course. Space operations of neighborhood and connectivity, implemented in a matrix environment, showed excellent results in obtaining the physical characteristics in a fast, reliable manner and with guaranteed scientific reproducibility.

Keywords : CHDEM; Morphometric characterization; São Mateus River and SRTM.

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