Brazilian Semi-arid Region

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Description

The Brazilian Semi-Arid Region is delimited by the Superintendence of Northeastern Development - SUDENE, considering the weather conditions that prevail in the semi-arid contexts, as the pluviometry. As a reflex of the weather conditions, the hydrography is frail, in various ways, being unable to support the larger rivers so that they can be perennial in the long drought periods, the exception being the São Francisco River. Due to its hydrologic characteristics, which allow for its subsistence throughout the year, the São Francisco River gains a special meaning to the populations living by the river and those of the Sertão area.