ATTAINMENT OF MORFOMETRICS PARAMETERS OF BASIN VERSANT BY MEANS OF GEOGRAPHIC INFORMATION SYSTEM

River basin is an area of the terrestrial surface that drains water, sediment and dissolved materials for an only exit, in determined point of the river system. The morphometrics aspects analysis in river basin, mainly aspects related to the draining and the relief, can take the briefing and understanding of diverse questions associates to the environment dynamics. The objective of this work was to characterize some morphometrics parameters of the river basin Ribeir o da Cachoeira or Areia Branca using Geographic Information System (GIS). SPRING, GIS used for the execution of this research allowed the fast and efficient manipulation of the information, facilitating and/or automating the attainment given necessary for the characterization of the basin. Considering that the morphometric parameters influence the amount of produced water by runoff and therefore also the quality of the water, this parameters should be considered in environmental planning and management of watersheds in order that we can minimize the impacts of human activities. This basin is important for the city has seen to be the primary funding source of water for urban supply. Thus the use of land should be planned so as not to compromise the water quality of river and its rainfall systems.