to find climatic patterns compatible with those of humid subtropical climates (Cfa and Cwa), as in the region around Mount Roraima, which has an annual average temperature between 20 and 22 °C (68 and 71.6 °F), and a dry season between December and March. Hydrography The state of Roraima has an extensive hydrography. Its territory is abundantly irrigated by 14 rivers, being these: Água Boa do Univiní, Ailã, Ajarani, Alalaú, Branco, Catrimani, Cauamé, Itapará, Mucajaí, Surumu, Takutu, Uraricoera, Urubu and Xeruini. The hydrography of Roraima is part of the Amazon River basin and is basically based on the Branco River sub-basin of , the largest and most important in the state. This river is one of the tributaries of the Negro River. Most of the rivers in the region have a large number of beaches in the summer, ideal for tourism and leisure. Besides, there are rapids rivers located in the north of the state, which are an option for water sports, such as canoeing. Almost all water sources in the state originate within its territory, except for two rivers with springs in Guyana. All Roraiman rivers flow into the Amazon Basin. Fauna and flora The diversity of landscapes and biomes in Roraima contributes to the formation of the fauna in Roraima. In the Roraiman Amazon rainforest region, animals such as jaguars, tapirs, peccaries, alligators, margay cats, otters, deers, monkeys, and other species are found. In the general fields of the Branco River and the savannas, there are anteaters, armadillos, tortoises, pampas deer, pacas, agouti, several species of snakes and other species. Among many species, the wild horses stand out, they are called cavalos lavradeiros (in English: savannah horses or steppe horses), one of the last populations of wild horses in the world. In the Branco River basin, where most fish species are found, the variety of species is large. Among the main fish are the pacu, peacock bass, surubi, matrinxã, redtail catfish, tambaqui, acará, mandi, cachorra, piranha, traíra, piraíba, arowana and many other species. On the beaches of the lower Branco River, it is still possible to find species of turtles, as the yellow-spotted river turtle. There are many species of birds in the state, from large to small ones. Among the large ones, the passarão (literally big bird) and the jabiru stand out. Among the small ones, guans, herons, crested caracara and others stand out. In Roraima, the