This work presents a cartographic essay to determination of environmental fragility in the watershed of the Rio Verde (SP), localized in a contact area between crystalline rocks of the Serra da Mantiqueira and sedimentary terrains of the Depressão Periférica Paulista. We achieve the construction of a conceptual and methodological caught defining and exploring the concepts of environmental planning and management, susceptibility, sensibility, fragility and vulnerability. Analyzed the historical-social-economic characteristics watershed of the Rio Verde (SP), which is marked for the agriculture practices, principally, the connected at potato, onion, sugar cane planting, over there of livestock creation. Mapped and analyzed about geology, pedology, drainage, hypsometric, declivities and terrain use and occupation dates, which went treatise in a SIG environment and integrated for a algorithm to arrive the a synthesis map of the fragility environmental classes in the watershed of Rio Verde (SP). The synthesis map show that, of the total area of watershed of Rio Verde, 13,23% are classify as very decrease fragility, 42,13% as decrease fragility, 22,17% average fragility, 14,15% as high fragility and 8,31% as very high fragility. Then, conclude that the major part of area formed to the add of the average to very high fragility classes are in the portion of the Serra da Mantiqueira – major intensity of the morphogenetic process.