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Methodological proposal for hydrometric network design: part I - unbiased spatialization of hydrological data

In this study, the implementation of the first part of the proposed methodolgy for hydrometric network design aimed to the unbiased spatialization of hydrometric data of fluviometric and rainfall networks existing in the Doce river basin (DRB), from the descriptive statistical analysis and geostatistical analysis. Average minimum specific flow of seven consecutive days and return period of 10 years - q7,10 and total precipitation of half dry - Pss variables were used in this study. Applying the developed methodology it was observed that the values of q7,10 in DRB, in general, decrease from west to east, ranging from 0.51 to 8.47 L s-1 km-2. The variable Pss showed higher values in the region of the head waters and low course of DRB and minimum values in the central region, ranging from 147 to 243 mm. The proposed methodology allow a unbiased spatialization of study variables in DRB, allowing to estimate data in areas not monitored with lower uncertainty.

geostatistical analysis; hydrologic analysis; hydrometric monitoring


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