Sistema de informações geográficas no planejamento e gestão de recursos hídricos do Município de Barra Mansa – RJ

Abstract

The management of water resources in Brazil provides for the creation and maintenance of the Information System on Water Resources (SIRH), which is one of the main instruments of the National Water Resources Policy (PNRH). In the municipality of Barra Mansa, state of Rio de Janeiro, there were no official procedures for the systematization of data on water resources, which ended up being lost or improperly allocated among the various files and sectors of the municipal public administration. The objective of this research was to systematize, analyze and make available hydrological information from the municipality of Barra Mansa, through the development of a Geographic Information System (GIS), which will be used in the participatory public management of the water resources of the hydrographic basins inserted in the municipality. For this, a documentary research was conducted in the city's collection for the acquisition of qualitative and quantitative data, which enabled the development of the GIS, which was produced with the ArcGIS tool. The main results were: 1) creation of a geographic information system, to subsidize the planning and management of water resources in decision-making, in order to obtain information that is easily accessible to public managers and the local population. This system was named GEO Barra Mansa; 2) dimensioning and hydrological modeling of a reservoir for buffering extreme rainfall in the Barra Mansa river basin, through information and spatial analysis contained in GEO Barra Mansa; 3) rain x flow modeling in the Bananal river basin, with evaluation of artificial neural network methodologies, also using GEO Barra Mansa. It is concluded that the creation of the GIS enables the integration of different sectors of the municipal administration for the exchange of information and the generation of new approaches regarding the management of water resources. It allows systematizing information and results, supporting decision-making by local managers on public policies aimed at water resources.