SOIL COMPACTION AND WATERPROOFING AND IMPLICATIONS IN URBAN FLUVIAL CHANNELS

Abstract

Urban expansion and densification have resulted in phenomena related to the degradation of watersheds. This work evaluated the influence of increased anthropic pressure on the imbalances involving erosive processes and the consequent degradation of the river plain of a hydrographic basin in Aparecida de Goiânia - GO. The methodology analyses the spatial-temporal correlation between reduced concentration time, increased runoff estimates, and the consequent degradation of the plain in 1992, 2005, and 2016. The results indicate an increase in erosion in segments of channel convergence, with a low altimetric gradient and the occurrence of Fluvent Entisol, stemming from the increase in volume and flow peaks arising from areas with significant densification processes in the last twenty-four years. Thus, the importance of using indicators of increased anthropic pressure to understand the impacts related to urban density.

Keywords:
Urban Density; Surface runoff; River Erosion.