Avaliação da potencialidade hídrica subterrânea e proposta para metodologia de outorga em uma região da bacia sedimentar costeira do baixo curso do rio Paraíba.

Abstract

The use of groundwater is increasing; however, the criteria to define the amount of water to be withdraw are yet not well defined, creating then, a trend to an exploration each time more degradative. To define the hydric potential and the correct way of withdrawal, it is necessary the use computational models like tools to aid the management of these resources. The present dissertation use the computational modelling technics to calculate the hydric potential in a region of the sedimentary basin waters down the river course Paraiba to make a diagnostic of the current situation and to estimate the future consumption of the region. The results of the model application have also detected an over exploration in the area, and an expectation of grow in these exploration. Also, was verified that the criteria adopted by the state decree are not efficient to define the amount of water to be explored. Finally was proposed a method in complement to the existing directives to determinate a sustainable volume to be withdrawal, using, has base, the hydric potential estimate and his temporal variability.