the slope etc. will be mentioned. From its headwaters at 1,000 km, a length of 370 km, to km 700, runs with a northerly orientation through the whole extent of the region Minas Gerais at an average height of 760 m, with a slope of 25 cm/km, goes through the town Patos of Minas at a height of 770 m, obtains water from a number of small tributaries that descend from the Magalhães-peak and from the Serra of Barbaça, on the other side of the Serra da Mata da Corda. At a height of km 729, at a bridge, she receives the water of a small river, the Verde river, close to the place Contendas (Goias) and bends under the bridge perpendicularly to the southeast and takes the border between Minas and Goias. Between km 700 and 800 the slope is 50 cm/km, running in a valley of average width, with broken strictures between km 730 and 732 and between km 783 and 790. The terrains along the river are rolling smoothly and are poorly cultivated. Middle Paranaíba From km 700 to the reservoir of the Dourada (km 330, with a length of 370 km). Between km 575 and 700 the Paranaíba receives the following tributaries: At km 661, right bank the São Marcos, at km 633, left bank, the Perdizes river, at km 596, right bank, the Bagagem river. In this segment the river has a slope of 1.2 m/km in a region with generally narrow valleys, steeply sloping banks, rising up to 25 and 60 m. The tributaries of this segment cross diamond containing layers in the "zones of the triangle" Minas Gerais and Goias. Between km 313 and 575 the Paranaíba receives the water of the following tributaries: On the right bank the Verissimo. And the Corumba river (km 436) and the Santa Maria river. And on the right side the Jordao river, the Araguari river (km 469) and the small river Piedade. This stretch has a slope of 50 cm/km and runs through the cities Itumbiara (km 392) and Anhanguera (km 535), both in the territory of Goias, and through the city of Araporã (km 392) in the mine region. In this segment the Itumbiara Dam, situated in the municipality of gemeente Araporã, belonging to the Furnas Centrais Elétricas, operating since 1981 with a power of 2.800MW, being the most power generating hydro-station of the Furnas