Produção Nacional
Floodplain reconstitution based on data collected via smartphones: a methodological approach to hydrological risk mapping
2020; Brazilian Association of Water Resources; Volume: 25; Linguagem: Inglês
10.1590/2318-0331.252020190179
ISSN2318-0331
AutoresAyane Aparecida da Silva Ribeiro, Gabriel Araujo de Oliveira, José Almir Cirilo, Fellipe Henrique Borba Alves, Larissa Ferreira David Romão Batista, Vitor Barbosa Melo,
Tópico(s)Soil erosion and sediment transport
ResumoABSTRACT The present study aimed to investigate the use of mobile applications on smartphones, specifically the Hidromapp application, as a technical support tool for flood data collection, as well as its use in flood mapping. To this end, information about a flood event of May 2017 was collected in the municipality of Jaqueira-Pernambuco, using smartphones and the Hidromapp application. Information was later used as input data for modeling and floodplain reconstitution. The study used geoprocessing techniques and a high-resolution Digital Terrain Model (Pernambuco Tridimensional - PE3D). For result evaluation, the reconstituted floodplain was compared with hydrodynamic modeling results using statistical indicators (RMSE and Critical Success Index - C). The app presented a good performance as a support tool for field collection of floodmark data. The applied method allowed a partially adequate estimation of the reconstituted event, in which the flooded area (extension) showed a high degree of similarity with the compared model, but with caveats for water surface elevations, where considerable discrepancies were detected in some points of the study area.
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