Caracterização hidrossedimentológica dos trechos aluviais da Bacia Riacho do Tigre - PB.

Abstract

The research focused on the management of water resources are gaining increasing importance in recent years in Brazil, especially in the Northeast, due to the years of prolonged drought in semiarid environments. In this context, the exploitation of alluvial aquifers is an alternative supplement to supply the water shortage, seeking to improve the ways to capture and store water use by communities. Also the alluvium have greater capacity to store rainwater, they are easy to dig or drill, making its simple and feasible operation, contributing to the development in the region through family farming. the mappings of different alluvial stretches were performed, making the identification of land use and occupation. Different alluvial stretches passed sedimentological analysis and ratings, and then making up the grouping of three classes referring to the types of alluvial deposits. From the generated results it was concluded that the deposition of storage areas are concentrated in low-gradient environments, influenced by topographic controls, biogeographic, climatic, geological and anthropogenic. The high hydrodynamics presented the results reflected in the high variation in the types of analyzed alluvial deposits, which can generate influence in the formation of alluvial aquifers with different characteristics. Thus, this study sought to identify and characterize the river stretches in which there is the possibility of alluvial aquifers, so that the local community can improve harvesting techniques, water use and storage by exploiting these environments. The survey was conducted in the municipality of São João do Tigre - PB. Key-words: Aquifers Alluvial; semiarid riverine environments; and water management