Evaluation of environmental impacts generated in the implementation of the small hydroelectric center Canhadão and Tigre in Southeast Paraná by the RIAM method

Abstract

The environmental impact is related to the change made in the environment, whether negative or positive, therefore, by studying them, the consequences of actions are evaluated, so that the quality of the environment can be preserved at all stages of development of the enterprise. This article aims to analyze the environmental impacts caused by the implementation Canhadão and Tigre Small Hydroelectric Plant (SHP) in Southwest Paraná through the rapid impact assessment matrix method - RIAM. In order to perform such analysis, in order to mak e the process as subjective as possible, we sought the help of geotechnologies, field surveys and documents related to SHPs. The results of these matrices allowed us to identify that the significant negative impacts were: the alteration of the downstream discharge due to the reservoir filling period and / or permanent river diversion, the flooding of vegetation with loss of plant heritage, deforestation the site of construction sites that are detrimental to forest production, siltation of the reservoir, erosion processes, degradation of the areas used for the exploitation of construction material and temporary construction works. The significant positive impacts were: the improvement of the local road network and, in the current context, the SHPs, are presented as one of the most sustainable ways of producing electric energy, using the hydraulic potential of the studied region.