Regime hidrológico de cinco grandes açudes cearenses: Araras, Banabuiú, Orós, Pedras Brancas e Pentecoste

Abstract

The information produced by monitoring of water levels of the dams are useful to inform daily the volume of stored water, accompany the operation of the dams and to plan, come in other possibilities. From organization and consolidation of the information produced by monitoring during the period from 1986 to 2006 it determined the hydrological behavior of 5 great from Ceara dams- Araras, Banabuiú, Oren, Pedras Brancas and Pentecoste. To characterize the hydrological behavior of the studied dams were selected 6 variables: initiate and terminus of the incoming water, number of days with incoming water, volume of incoming water, variation coefficient of annual incoming water and the three months with major incoming water. With base in the technique of quantis were created categories to classify the annual volumes of enters a port to the dams: MP (very little torrential), PC (little torrential), N (normal), C (torrential), MC (very torrential). Were characterized the hydrological behavior of each one of the dams studied as well as determined the intervals associates to each category of incoming water.