Identificação da área de preservação permanente dos recursos hídricos urbanos: uma proposta metodológica.

Abstract

Although the delimitation of the Preservation Areas (PAs) of water resources is provided for in the Brazilian Forest Code, instituted by Law no 12651/2012, some localities do not consider the tax by this law or are applied with. The present work proposes a methodology for the identification and delimitation of PAs for urban water resources, based on a systemic analysis of the concepts about river dynamics and urban occupation. As a methodology, a georeferenced information system (GIS) program was used, as well as a bibliographical survey and field visits. As a result, the study confirmed the significant increase in the area of PAs, after a new proposal for the delimitation of the urban watersheds of Fortaleza/CE, besides offering a methodology that can be applied in other urban watersheds. The major negative impact of an underestimated PAs delimitation of urban water sources is the less protection of water resources and their banks, which causes direct damage to the integrity of water bodies. The correct delimitation of the PAs should be an instrument of environmental management adopted by the municipality in favor of the conservation of the urban springs and their surroundings.