PRELIMINARY ENVIRONMENTAL ASSESSMENT OF THE URBANIZATION OF THE ESPERANÇA STREAM, NOVA ESPERANÇA DO PIRIÁ, NORTHEAST OF PARÁ

Abstract

Urban growth in Brazilian municipalities causes environmental impacts, especially on water bodies that range from loss of protected areas to loss of depth. In Brazilian municipalities, such as Nova Esperança do Piriá, in southeastern Pará, there are still no studies identifying the negative effects of this type of growth. This gap led to the objective of this assessment and identification of the impacts and their classifications on the Esperança Stream in the urban area. The method employed was ex-post-facto research, combined with qualitative and quantitative scope and observational design. Data obtained during in-situ observation indicated that the stream's banks and channel were channeled, generating cumulative impacts in the directly and indirectly affected areas. In addition, it also caused vegetation suppression in the Permanent Protection Area (APP). Siltation and loss of depth are visible. The development and presence of macrophytes indicate water pollution. The cement layers used for the paving and sidewalks hinder soil recharge of the stream. The lack of trees on both banks indicates intense radiation, which can lead to health problems for the surrounding community, who only visit this area after sunset due to the drop in air temperature. There are still no recreational facilities or leisure activities that would lead to increased community attendance. Therefore, the objective of paving the channel was not achieved, but the negative environmental impacts on the stream under analysis are evident.