Disponibilidade e demanda hídrica a partir da análise ambiental da região do alto curso do rio Dourados em Patrocínio (MG)

• Ano de defesa: 2014
• Autor(a) principal: Silva, Renato Emanuel
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal de Uberlândia; BR; Programa de Pós-graduação em Geografia; Ciências Humanas; UFU
• Palavras-chave em Português: Uso e disponibilidade hídrica; Análise ambiental; Alto curso da bacia do rio Dourados; Patrocínio (MG); Use and availability water; Environmental analysis; Upper course of the Dourados river basin; CNPQ::CIENCIAS HUMANAS::GEOGRAFIA
• Link de acesso: https://repositorio.ufu.br/handle/123456789/16182; https://doi.org/10.14393/ufu.di.2014.32

The region of the upper course of Dourados river (left tributary of the Paranaíba river ) has an area of about 194 sq km in the north central portion of the city of Patrocínio / MG . Stand out agricultural activities with emphasis on coffee growing, temporary agriculture and livestock. The basin is the source of capturing water for the city of Patrocínio. Human activities generate impacts that may contribute to impaired quality/quantity of water availability. Arises, therefore, the need to consider the availability and water potential of this area, starting from the environmental analysis, so were done fieldwork correlated to imagery satellite Landsat and BlackBrigde with the aim of understanding the evolution of human occupation of the area from 1985 to 2010. Climato-hydrological studies (1980-2010) were also performed. This way, were known, the rates of precipitation, the consecutive days without rain, climatic water balance (according to Thornthwaite & Mather), the dry spells and the duration of dry seasons. Still, were obtained data from the extreme flows (minimum and maximum) and analyzed the use and availability of the water as informed by the Instituto Mineiro de Gestão das Águas ( IGAM ) and the estimated growth of water consumption by the city of Patrocínio (MG) . The results show that the area has been systematically occupied by agricultural activities and increasing urban sprawl. Thus, are significant the changes in superficial runoff and infiltration processes, as well as, the impacts of improper waste disposal and river courses exposure to the anthropic impacts. The climatic and hydrological analysis, from descriptive statistics, return period graphics, tabulating of historical series, checking the significant days without rain and extreme and specific capacity, allowed observing the relationship between the dry and rainy seasons with flow rates. The association expressed by the water balance, shows that in the dry season, or in its extension may have the necessity of irrigation systems for some types of agriculture as seen in the case of horticulture. The use of water resources within the basin pushes its availability that is also being compromised by reducing the flow of some courses. Soon Patrocínio s growth may face problems related to water supply. The associated results reveal the need of a plan manager who understands the basin as a producer of water and seek partnership with involvers , guiding them to a rational behavior toward water resources.