Agricultural influence on the hydrogeochemistry of the sub-basins of the Verde, Entre Ribeiros and Escuro Rivers of Paracatu Hydrographic Basin (MG) – Brazil.

Abstract

Of the numerous hydrogeochemical river-water transformations provoked by intense and irrational soil practices, heavy metal contamination by agrochemical usage is the most worrisome. Long-term metal accumulation can be transported by rainwater, during storms, contaminating rivers. Data on this type of contamination are still scarce, principally in developing countries, such as Brazil. This paper aims to evaluate the influence of agricultural activities on the hydrogeochemistry of the Paracatu River’s sub-basins.