Operação de reservatórios do sistema de abastecimento dos municípios da região hidrográfica dos sertões de Crateús

Abstract

The fight against the scarcity of water resources is constant in the reality of the semi-arid northeast of Brazil, in view of this, there was the creation of several reservoirs in the most diverse places in order to retain this resource for later use in the periods of drought. In order for this resource to be distributed in the most efficient way to the system, studies must be done about the allocation and operation of the reservoirs that compose it. In this work, the focus occurred in the operation aimed at evaluating the system regarding the use for human supply, and the evaluation for the scenarios of current and future demands for the municipalities was made. The study was located in the Sertões de Crateús, with the human supply reservoirs of the municipalities, totaling seven reservoirs in the study for four municipalities. The methodology used was subdivided into two stages, the first was the calculation of pseudo-historical flows affluent to reservoirs, using the rain – flow processing methodology through SMAP, the second stage, consisted of the operation of the reservoirs using the decision support system LabSid AcquaNet, where the behaviors of reservoirs and possible shortages for the region were evaluated. The results obtained for the calibration of the rain - flow model demonstrated great adjustment in the capture of historical variation of flows, generating pseudohistoric affluent flows to reservoirs that were representative when evaluated together volumetric evolution of reservoirs. For the results of the operation of the reservoirs it was possible to evaluate and understand their behavior, demonstrating the weaknesses of the system and bursts for the demands.