Estudo de medidas descentralizadas para o controle do escoamento urbano: aplicação à bacia hidrográfica do riacho do Sapo - Maceió/AL

Abstract

The urban centers expansion process combined with a plan that took little account of natural processes have caused significant changes in the local hydrological regime. Given this, some runoff control measures generated in urban areas have been developed in order to offset the impacts caused. However, these new control measures are finding difficulty of application in Brazil due to its integrated dynamic and deployment challenge in regions that already have urbanized. Faced with this problem, the implementation of urban runoff control measures in the current scenario of a Brazilian urban watershed raises questions about its applicability, being timely the study of the integration of different compensatory techniques implemented at different scales in a watershed. In this sense, the proposed study aims to contribute to the understanding of the applicability of different urban runoff control measures deployed at different scales in an urban watershed in the city of Maceió-AL, the Sapo’s creek basin. For discussions of this study, it was used a hydrologic-hydraulic modeling through SWMM software to simulate three different intervention scenarios: (I) the implementation of detention reservoirs in the scale of sub-basin; (II) the implementation of detention microreservoirs in residential lots; and (III) the implementation of detention microreservoirs in lots with high soil sealing.