Estudo hidrológico da área do lixão do Roger em João Pessoa-PB, Brasil

Hydrological study of the Roger dump area in João Pessoa-PB, Brazil

Abstract

The recurrence times or return periods of intense precipitation can be obtained from estimates, making it possible to evaluate the flooding caused by the rise in the water level of water bodies in a region. Such an assessment makes it possible to map water spots and thus verify the areas that could be affected by floods. In this context, this work aimed to evaluate historical precipitation series from pluviometric stations located close to the Lixão do Roger area in João Pessoa-PB, estimate maximum precipitation using continuous probability distribution (Gumbel) for different recurrence times and map the floods generated by these precipitations associated with the recurrence times studied, aiming at safety in the area for the implementation of a park. Using hydrological modeling and delimitation, it was possible to identify the flood areas in the Lixão do Roger area and predict the altitude reached by the flood spots for each recurrence time. For the Cabelo Cagepa Post and considering a recurrence time of 100 years, it is possible to verify that up to 30% of the Lixão do Roger area is affected by floods and the elevation intercepted by the water was approximately 5.87 m.