Análise geoambiental da bacia hidrográfica do Rio Pajeú, região fisiográfica submédio São Francisco – efeito da precipitação

Abstract

Water consumption in the world has increased greatly, scarcity is worrying, and misuse and pollution grow every day. Therefore, it is necessary to create actions that enable a better management of water supply and demand. At this juncture, several types of analyses can be used to devise strategies that maximize the proper use of water. Statistical analyses together with geoenvironmental analyses were the models used in this work. The acquired data can serve as a basis for sustainable management programs, as well as measures that reduce socioeconomic and cultural problems of the Pajeú River Basin region. The data were acquired in Pluviometric and Fluviometric meteorological stations, where series analysis of the Pajeú River Basin was performed. To support the study, geoenvironmental analysis was made through Geographic Information Systems - SIGs. The stations chosen for the work are located in the high, middle and low Pajeú, where from the historical series the specific flow was calculated and the permanence curve was obtained. With this information it was possible to measure that there is no relationship between precipitation and flow during the analyzed period. Therefore, it is notorious that anthropic actions have influenced even more in the region's drought scenario. Therefore, the biggest challenge is to develop a joint planning between the basin committee and public authorities in order to promote the sustainable development of the Pajeú River Basin.