Caracterização física e estimativa da vazão máxima na sub-bacia do rio coutinho em Guarapuava-PR

Abstract

With the increasingly latent increase in demand for water and considering the intensification of climate changes that have occurred over the last few decades, the rainfall regime has changed in different regions of the planet. From this, the management of water resources has been directly impacted by the effects of these changes, whether due to excess rainfall or its deficiency. Considering that the scenario of insufficient hydrological data (especially fluviometric data) in Brazilian hydrological basins and sub-basins is common and also the fact that the Coutinho River sub-basin is one of the main contributing basins to the Rio Hydrographic Basin Jordão (BHRJ), this work aims to carry out the physical characterization of the Coutinho river sub-basin, in Guarapuava-PR, using the QGIS software and an estimate of the maximum flow of this water body. The methodology adopted in this research will be guided as follows: first, the physiographic indices will be determined. Subsequently, with the obtaining of these indexes, it will be possible to estimate the concentration time and, with the help of methods such as the IDF curve and the HUT-SCS method, it will be possible to estimate the maximum flows for the return times of 5, 10, 20 e 50 years of this basin. The results indicated the respective maximum flows for each of the return times: 285,9 m³/s, 379,7 m³/s, 494,8 m³/s and 685,5 m³/s. Considering the scarcity of fluviometric data in the study region, this material can be a support for the development of future studies in the region that are related to the theme and that have little information.