Rio Branco AC

Rio Branco is the capital of the state of Acre, in the North area of Brazil. The city is the most populous of the state, concentrating more of the half of its total population. Besides, it was one of the first towns to appear in the margins of the river Acre. It tells the history that, in the end of 1882, in a pronounced turn of the river Acre, a leafy tree, Gameleira, got the exploiters' attention that you/they went up the river and it took them to open new seringais there even. Rio Branco has 305.731 inhabitants, and Raimundo Angelim is its current mayor.
The area, today known as municipal district of Rio Branco he/she has origin when of the arrival, in the area of Acre, of the seringalista Neutel Maia, in the end of 1882, together with its family and workers that he/she brought for the rubber production, where it founded its first seringal to the right margin of the river Acre (where today it is located the tree of the gameleira), beginning the barracões constructions and huts there &mdas; in lands before occupied by the indigenous tribes Aquiris, Canamaris and Maneteris—giving the name of Seringal Comes back from the Company (where today it is located called him Second District), for being seated where the river makes the curve. Soon after, he/she opened other seringal in the left margin of the river Acre, where today the Palace of the Government from Acre is installed, with Seringal Company's name.
After having finished the Revolução Acreana, after the signature of the Agreement of Petrópolis on November 17, 1903, Cunha Matos, I order it of the federal government, it arrived at Acre on August 18, 1904, to govern, as mayor, the Department of High Acre up to 1905.
Cunha Matos chose to set up the headquarters of its city hall, of form provisória, in the populated place of the seringal you/he/she Comes back from the Company, to the right margin of the river Acre, on August 19, 1904, passing the place to be called Villa Rio Branco on August 22, 1904, where today you/he/she is located the Second District of the city of Rio Branco.
On June 13, 1909, the then mayor of the Department of High Acre, Colonel Gabino Besouro, changed the headquarters of the city hall for the left margin of the river Acre, where today the main public organs work as the Government's Palace, Tribunal of Justice, Legislative Assembly and Palace of the Clerkships, in the lands of the seringal Company, receiving the name of city of Penápolis, where the earth was higher, it doesn't subject to the alagações of the river Acre. It was a definitive installation.
In 1910, Melo's mayor Leônidas Benício, signed a Resolution creating the city of Company, joining the Villa Rio Branco (in Seringal it Comes back from the Company, on the right side of the river Acre) and the city of Penápolis (Seringal Empresa, on the left side of the river Acre).
In February of 1911, Souza's mayor Deocleciano Coelho, adopted the name of city of Penápolis again.
In a definitive way, in 1912, the two sides of the city pass calling her city of Rio Branco.
In 1920 it becomes the capital of the then Territory of Acre. Origin of the name THE capital won this name in honor to the diplomat Barão from Rio Branco, that with Assis Brasil and José Plácido of Castro, he/she had prominence paper in the Subject of Acre, that culminated with the signature of the Agreement of Petrópolis, among Brazil and Bolivia, agreement that it guaranteed the ownership of the lands of the territory of Acre and the right of the exploration of the rubber in this area to Brazil.
Dates important August 11, 1910 - it begins to work the first agency of the Mail and Telegraphs.
February 11, 1911 - installation of the Estação Radiotelegráfica.
April 13, 1916 - Rio Branco receives its first electric usina.
September 7, 1917 - inauguration of the first phone service.
April 13, 1918 - inaugurated the first hospital of called Rio Branco of “Santa Casa of Mercy of Acre.”

Geography THE city is divided in two districts by the river Acre.
Altitude: 136 m Area: 9.233 km2 Population: 305.731 inhabitants, on July 1, 2005 (est. IBGE) THE municipal district is located in the microrregião of Rio Branco, mesorregião of the it is Worth of Acre. It is limited to the north with the municipal districts of Bujari and Porto Acre and with Amazonas, to the south with the municipal districts of Xapuri and Capixaba, to east with the municipal district of Senator Guiomard and to west with the municipal district of Sena Madureira.
I raise Rio Branco he/she locates in Rio Acre margins, its topography to the right (in the area today denominated by the Second District) formed by immense alluvium plain, while the soil in the left margin (where it is the downtown), it is characterized by succession of soft aclives.
[to publish] Soil About 90% of the sediments of the Basin of healthy Acre of tertiary age of fluvial continental origin, having been studied under several denominations, like Pebas Manaus's Formation, Puca and Rio Branco. Of them the more acquaintance is the Formação Solimões.
The Formação Solimões is composed by typical sediments of flood plain, presenting crossed beddings, it structures to laminate in argilitos, abed siltitos and in lenses, fine and rude arenitos in lenses or interdicted with siltitos and argilitos, etc.
The analysis done by RADAMBRASIL leaf of Rio Branco evidence the presence of five associations of soils that you/they recover the surroundings of Rio Branco: Latossolo red yellow distrófico with characteristic moisturized oxide marcantes of iron, aluminum and variable clay proportion. They are soils concrecionários lateríticos of loamy texture; Podzólico red yellow eutrófico, has as predominant sediments, argilitos, carbonated loamy siltitos. They are not hidromorfos, and they are characterized by presenting a horizon textual B with loamy fractions; Podzólico red yellow álico, is soils of medium depth, well arenado and with degree of weak and moderate structure, in the form generally to granulate. It possesses high degree of acidity and presence of aluminum; Soils hidromórficos gleyzados eutróficos and álicos, are developed on recent sediments (quaternary) of texture argilo-siltosa, with colors influenced by the process of reduction of the iron and for the saturation with the humidity; Soils hidromórficos gleyzados eutróficos, soils that were original starting from Formação Solimões's sediments in the period plio-pleistoceno.

Climate THE climate varies from 22°c to 38° in hotter days of the ano,lembrando that is always in an altitudo of 132m, the nights atige the smallest temperature could arrive in the dawns á 22°c. In July to August is the hottest time of the year, arriving for 38°c, also with owed a lot of smoke the burned of pasture that it ends up harming the a lot of people's health.
Hidrografia Rio Acre is crossed now by four bridges, the newest is Ponte of the Market THE Channel of the Maternity it was revitalized with the construction of a park that accompanies its common leitoNo, the rivers and igarapés of Rio Branco they are quite sinuous, escoando in narrow fluvial plains of deposition, with the regime fluviométrico obeying the regime pluviométrico alternating like this periods of full and vazantes. The periods of full present, according to intensity of the rains, enchentes of different magnitudes. The formation geológica and geomorfológica are indicators of rivers of white waters, with great concentration of solid material in suspension, originating from of the processes hidroerosivo of the current on the margins.
Rio Acre, flowing direct of Rio Purus. For its extension and for its flow, it is constituted in the largest drainage representative in that unit. He/she has a dynamic very common geomorfológica–the sliding of its margins, what is related to the variations of fluvial regime of full and vazantes. This phenomenon happens, commonly, in the period of the enchentes. When the waters begin to lower, the pressure hidrostática decreases and the water previously retained in the margins it is liberated. With that, the sliding that happens in its margins it configures crumbled landings. In Rio Branco these contribute to the assoreamento of Rio Acre normal bed influencing the regime and the seasonal extension of the full ones that characterize the partial flood of the urban areas of the city.
Igarapé San Francisco, with course of 115,6 km2 and density of drainage of 1,37 km/km2, is of great importance for being, Rio Acre exception, the main collector of the basin hidrográfica of the urban ranch of Rio Branco. It is quite degraded due the desmatamento of its margins for the human occupation and also for the pollution of its waters for being serving as garbage deposit and sewer to open sky.
Jewish Igarapé possesses a course of 26 km, it possesses an escoamento of drainage of the type dentrítica. He/she meets quite polluted.
Channel of the Maternity: this meets quite polluted, for cutting the city it is a great collector of you dilute pluvial.