Slopes anthropogeomorphological diagnosis of low course of facão’s stream watershed – araras city, São Paulo (SP)

Abstract

The alterations caused by the man in the landforms have been dynamized during the process of urban growth, resulting different environmental damages mainly intensification of erosive process, silting of rivers and consequently the occurrence flooding. Thereby, the aim of this work is to analyze the alterations caused by the urban growth of Araras city (SP) in the slopes of low course of Facão’s stream watershed from 1997 to 2016. To understand the geomorphological implications coming from anthropogenic activities in the study area in this time, the principles of Systems General Theory which allowed the comprehension of area as controlled system due to anthropic interference. The confection of geomorphological map, land cover map and declivity map as well as fieldwork allowed to collect data whose analyses made it possible to identify the geomorphological features brought by the urban growth. Therefore, the main changes observed refer to alteration in the feature of waterway due to process of channeling, decrease natural topographic breaks and advent erosive features.