Lectures were held in the towns close to the Ivaí and Piquiri Rivers, aimed at raising awareness among the population and drafting laws to prevent the damming of the Ivaí and Piquiri Rivers, through the construction of hydroelectric plants. Among the speakers, we highlight the presence of the Prosecutor, Dr. Robertson de Azevedo, technicians and graduate students at Nupélia at UEM (State University of Maringá) and at Padre Zenildo  Magiatto.