As watersheds, understood as the natural unit of the landscape, extremely sensitive even to small changes, are they natural or anthropic. Asso of the use and coverage of this unit can, and for the most part, negatively impact on the sustainability of its natural resources. The understanding of the process as well as through the characterization of its physical constituents associated to the typologies of use, is configured as an essential attribute in the search for solutions to the unrestrained impact on the natural resources. By programming a study in the Benfica River Basin (BHRB) - PA, in which a development of the landscape configuration of the site was analyzed. Knowledge of such information, in particular, to the public power as a subsidy for the accomplishment of environmental planning and management. All as analyzes made in the study of geographic information systems (GIS). The results are an area of the basin suffered large urbanization process Passing from 26.76 km2 to 41.97 Km2. Such growth without proper planning brings with it numerous socio-environmental impacts as found in the study area.
