Avaliação do nível de saturação da açudagem na bacia hidrográfica do rio Acaraú - Ceará

Abstract

The practice of water storage has been important in reducing the vulnerability of populations in semiarid region of Ceará. To compensate for the seasonal and interannual variability of rainfall, surface reservoir becomes a carrier of water in time and thus the potential storage capacity in Ceará is now about 17 billion m³. It is estimated that there are about 30,000 dams in Ceará. Some basins are still able to aggregate flow to the water system, others are saturated or near saturation and a new reservoir would decrease the flow of the regularized system. This study aimed to present a methodology for assessing the degree of saturation of a watershed, the index of the degree of saturation of damming (IGAS) and use it in River Basin Acaraú where several buses are still provided. With the application of IGAS, it was observed that most of the sub-basin is the high IGAS.