Renegociação da outorga pelo uso da água na bacia do rio Gramame - PB utilizando um algoritmo evolucionário multiobjectivo.

Abstract

Water is essential in the development of a region, both in the social, economic and environmental aspects. However, the uneven distribution and moisture stress are limiting factors, in some regions, both in quantitative and qualitative terms. In addition, we have a growing population that has contributed to increased competition for water use and is a potential source of conflict. These conflicts are intensified in the semi-arid basins where water supply is usually not able to meet all the requirements, and are potentially more pronounced due to the restrictions that are imposed on grant flows. This study aimed to develop a methodology to support the renegotiation of water allocation in relation to the volume already granted in Gramame river basin in the state of Paraíba, considering the existing surface and availability standards. The methodology uses a multi-objective evolutionary algorithm to support the management of water use in the basin, evaluating scenarios for optimizing the use of water in case of renegotiation of the grant flow. Use priorities to changes in supply have been adopted and used in the scenario with respect to the flow required by each user. The results showed that by prioritizing the offer cannot renegotiate concession in some places, due to the limitations of the award criteria ongoing factor.