OCUPAÇÃO E CARACTERIZAÇÃO HIDROLÓGICA DA MICROBACIA DO CÓRREGO IPANEMINHA, SOROCABA-SP

Abstract

The understanding of spatial relationships between forest vegetation and water is intrinsically related to the interactions and the structural changes of a watershed. In this context, this study aimed to characterize the use and land cover of the watershed of the stream Ipaneminha, as well as launch the hydrological monitoring by means of morphological dynamics and three springs, Sorocaba-SP. To construct the map of land cover and soil and determination of morphometric features were used letters planialtimetric IBGE aerial photography and digital terrain, manipulated in the GIS Idrisi Kilimanjaro. The monitoring of the springs was carried out weekly over 16 months, with flow measurements and classification of the type, persistence and current state of conservation. It was found that the watershed there is a predominance of pastures, which occupy 69.89% of its total area. Thus, 12.26% is considered a permanent conservation area, still showing signs of degradation. The watershed was characterized as slightly elongated and less prone to flooding, fourth order, low drainage (1.86 km/km 2) and a relief of 8.22% (moderately undulating relief). Two of the three springs are slopes, intermittent and are degraded. The information presented in this study will serve as support to the planning of the occupation and use of the area as well as the understanding of its relationship with the hydrological dynamics of Ipaneminha watershed.