Resumen
Knowing the importance of the map in the information transmission, this work aims to carry out the mapping of the Mandacaru river valley occupation. The Mandacaru is a stream in the city of Maringá (state of Paraná, Brazil) north sector. This mapping will support the study and analysis of the river valley occupation alterations. The work was carried out in two stages, being the first in the upstream sector, and the second covering midstream and downstream. This article focuses the upstream sector, which is inserted in the urban perimeter. It seeks to correlate the detected local reality with the legislation. In this way, it was possible to emphasize cartography as an instrument for the analysis and aid to environment preservation.