Estimativas do grau de impermeabilização das bacias urbanas da cidade de Campina Grande.

Abstract

The world population has been experiencing a substantial increase in the last decades and one of the consequences is the increase in the rate of waterproofing of the soil, which can consequently bring serious problems such as floods and floods. To avoid these events it is necessary to have an efficient rainwater drainage system, which can be achieved by knowing the probable volume / flow rate due to a high intensity precipitation event. In this sense, one of the requirements is the determination of the degree of waterproofing of the basin in question. Among the techniques available are geotechnologies and these were used to determine the degree of waterproofing of the urban basins of Campina Grande (Paraíba), where frequent floods have been recorded in recent years due to population growth. The results showed that for the central areas the degree of waterproofing already reaches values close to 80% and in the peripheral basins this index tends to increase, since it is for these basins that the new residences are being implanted.