Expectativa de risco de eutrofização dos reservatórios na bacia do Rio Jundiaí-Mirim.

Abstract

The reservoir eutrophication is chemical compounds use and other non point source pollution consequence, it has been focus from many studies and watershed managers concerning. The eutrophication risk expectancy map creation is an important tool on water resources planning and management. Based on map combination of erosion risk and agricultural procedures, the eutrophication risk has classified into low, average and high. We could verify that Jundiaí-Mirim watershed presents 9% of its area with low eutrophication risk, 38% average and 29% high, this means 1/3 of its area presents a high eutrophication risk. These data may be useful to prepare a water resources management plan to Jundiaí-Mirim watershed.