Urbanização, legislação urbanística e preservação ambiental: estado de conservação da bacia hidrográfica do Rio Calhau em São Luís, Maranhão

Abstract

Considering the strategic view that urban waters and its margins passed to have, in the planning process and urban space’s production, the present work intends to contribute for the discussion about the urbanization and its relation to the natural environment, especially with urban rivers, taking as case study the Hydrographic Basin of River Calhau in São Luís, Maranhão. Therefore, it was made a bibliographic research related to urban hydrographics basin, analyzed legislation that supports the management and the urban planning of water resources and done a study of methodologies of environmental and urban evaluation. This way, it was made the analysis of conservation conditions according to physical and urban indicators and and the socioeconomic reality from basin, by the results, it was found that zone has complexity environmental and socioeconomic characteristics not considered in its occupation, been that zone’s urbanization process it occurred without regard to the rules in force for the management of urban hydrographics basin, like this the Calhau River and its tributaries suffered serious consequences, like the disrespect waters courses and the Permanent Preservation Areas.