Estabelecimento de uma Bacia Hidrográfica Urbana Experimental em Pelotas/RS: monitoramento hidrológico e inventário das estruturas de drenagem em ambiente SIG

Abstract

The impacts of urbanization in cities are evident, affecting both the population's way of life and the environment. In this context, investigating the effects of rain in urban areas and analyzing the systems designed to deal with these water volumes become crucial. Therefore, the present study aimed to conduct a thorough survey of the drainage devices contributing to the Experimental Urban Watershed Basin of Pelotas (BHUECA), with the objective of registering, diagnosing, and identifying their planialtimetric characteristics. The collected data included information on micro drainage, such as characteristics and location of the 295 manholes, height of curbs, and type of road pavement, and macro-drainage, encompassing the survey of Canalete da Argolo's geometry, along with the installation of a reference level benchmark to connect this information. Subsequently, the data were organized and integrated into a Geographic Information System (GIS) using the ArcGIS Pro software. The analysis revealed high curb heights, a variety of manhole typologies, with 42% of them presenting problems. Despite the adequate spatial distribution of the rainwater collection system, there was an urgency to implement an action plan to restore damaged and obstructed manholes, aiming to improve the efficiency of the urban drainage system. The results of this study will be made available on a user-friendly hub, allowing society to access and utilize this information in managing systems, as well as other purposes requiring spatial information in the vicinity of the study area.