Drainage network extraction of Brazilian semiarid region with potential flood indication areas

Sergio Rosim; João Ricardo de Freitas Oliveira; Jussara de Oliveira Ortiz; Miguel Zanic Cuellar; Alexandre Copertino Jardim

doi:10.1117/12.2066906

21 October 2014 Drainage network extraction of Brazilian semiarid region with potential flood indication areas

Sergio Rosim, João Ricardo de Freitas Oliveira, Jussara de Oliveira Ortiz, Miguel Zanic Cuellar, Alexandre Copertino Jardim

Author Affiliations +

Proceedings Volume 9239, Remote Sensing for Agriculture, Ecosystems, and Hydrology XVI; 923919 (2014) https://doi.org/10.1117/12.2066906
Event: SPIE Remote Sensing, 2014, Amsterdam, Netherlands

Abstract

This region has the particularity of, at the same time, coexisting with sporadic floods and scarcity of water. This situation requires complex studies involving water resources based on runoff of rain waters and on the courses of the rivers. For the extraction of drainage was carried out by using of the system for hydrological modeling treatment TerraHidro, developed by INPE's Image Processing Division. This system uses the PFS method for extraction of drainage, which has provided good results, enabling the reduction of the time spent on manual editing of drainage errors. TerraHidro has a tool called Height Above the Nearest Drainage (HAND) which gives information on potential flood areas. Elevation data were used in the Aster GDEM with spatial resolution of 30 meters for drainage extraction. A qualitative comparison was performed between drainage extracted by TerraHidro and drainage manually extracted by a specialist.

Citation Download Citation

Sergio Rosim, João Ricardo de Freitas Oliveira, Jussara de Oliveira Ortiz, Miguel Zanic Cuellar, and Alexandre Copertino Jardim "Drainage network extraction of Brazilian semiarid region with potential flood indication areas", Proc. SPIE 9239, Remote Sensing for Agriculture, Ecosystems, and Hydrology XVI, 923919 (21 October 2014); https://doi.org/10.1117/12.2066906

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