The IBGE releases today 25 digital maps in the 1:100,000 scale (1 cm = 1000 m), encompassing part of the states of Piauí, Tocantins, Pará, Maranhão and Mato Grosso. These cartographic representations comprise mosaics of ortho-rectified satellite images. Their files in PDF format can be accessed here.

The maps provide a view of the territory, consistent with the representation requirements of this scale, as well as the geographic elements of higher relevance. Ortho-rectification eliminates distortions, aiming at making the image metric and free of errors. The production of maps takes less time than that of complete topographic sheets, making this information quicker available to the society.

The maps were produced from the images of the AVNIR-2 sensor, provided with a 10-meter spatial resolution, most of them acquired between 2009 and 2010. They comprise the Cartographic Base in the 1:100,000 scale Project (BC100) and correspond to one of the products scheduled for the Federation Units. As of this release, the state of Tocantins becomes fully covered, which corresponds to a total of 127 maps, and Piauí gets 35% of its territory represented.