Krigagem ordinária para predição de vazões em locais sem dados

Abstract

Faced with the need to ensure the quantitative and qualitative aspects of water resources for present and future generations and to the development of the National Water Resources Policy, the water use grant rights has become a fundamental tool to support water management. For water concessions, it is necessary to know the water availability into the stream in question, a fact that presents some difficulties due to the lack of data in small watersheds. The mapping of minimum flows in addition to solve the problem of lack of knowledge of these flows in areas without data confers agility to process analysis by the managing agency. A state map of dispersion curves of minimum flows was made in this work through ordinary kriging. This will assist the water use grants issuance process, since it serves as a tool to collect reference flow of information by simply entering the geographical coordinates of the point of interest. The results were satisfactory based on Nash-Sutcliffe efficiency coefficient.