Its geographical limits are the Guyanas massif to the North, the central tableland to the South, the Andes mountains to the West and the Atlantic Ocean to the Northeast. It has an equatorial climate, and harbors the large rivers that form the Amazon and the Tocantins basins. These types of land vary according to river water levels determined by rainfall. Flatplains are higher lands which are only flooded by the rivers during flood season.
Rubber trees are a good example of flatplain woods species.
Low plateaus, or dry lands, are the highest lands, and are not affected by river floods. Hardwoods and nut trees grow on this type of land. In some areas of this region energy is provided by hydroelectric power plants, and in others, by diesel-powered generators. The Federal Government offers incentives for the creation of industries in the State of Amazonas, specially electronics assembly plants. This process is managed by the Superintendence of the Manaus Foreign Trade Zone, and the incentives will be in force at least until the year 2003.