Permeable areas and the use of groundwater

Abstract

The water from rainfall that may be retained in the soil or the surface can seep by gravity or capillary action and will form the underground phase of the hydrologic cycle. Permeability measures the greater or lesser ease each soil, when saturated, offers the piping of water through its interstices. The permeability depends mainly on the porosity, particle size and shape of grains. Rainwater crashing into the ground can promote compaction of the surface, reducing infiltration capacity, carry out and the fines which, by their subsequent sedimentation, tend to decrease the porosity of the surface, moisten the soil surface, saturating the layers close, increasing the penetration of water and act on particles of colloidal substances that engorge wet, reducing the size of the intergranular spaces, reducing infiltration and dry, shrink, forming fissures in the ground. The presence of vegetation reduces or eliminates this effect. Therefore, this study aims to analyze and assess the role of green vegetation in the drainage of water from the Campus I of Passo Fundo University and to minimize the main drainage-related impacts, and sustainability of groundwater use by the University for the various purposes. It is hoped by the results obtained contribute to a better local drainage because the water from the rains may have a delay of its runoff may facilitate the percolation through the soil, minimizing related impacts.