Caracterização da bacia e estimativa da capacidade de armazenamento da Lagoa do Jacaré no município de Várzea Grande-MT

Abstract

Over the years, the occurrence of natural disasters, such as floods, floods and floods, has significantly increased in urban areas. They occur due to a combination of factors such as intense rainfall, flaws in urban planning, soil sealing and environmental degradation. The increase in urbanization and the disorderly occupation of urban areas have contributed to the amplification of these risks. Therefore, the present study aims to physiographically characterize the basin and identify the volumetric storage capacity of Lagoa do Jacaré, located in an urban region of the municipality of Várzea Grande in the State of Mato Grosso. The study was divided into three stages, the first stage consists of the characterization and delimitation of the watershed through a digital terrain model. The second stage involves the interpolation of topobathymetry data collected in the field, using geostatistical techniques, in order to obtain a more accurate representation of the bottom of the lagoon. In the third and final step, areas and volumes are calculated for each contour line. The physiographic characterization and identification of the lake's storage capacity allow a more detailed analysis of the occurrence of floods and the adequate management of the urban space. Knowing the topography of the bottom of the lagoon makes it possible to identify whether there is any type of siltation that could compromise its real damping capacity and to take mitigation measures.