Avaliação da disponibilidade hídrica superficial no estado de Goiás
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2020-03-12
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Universidade Federal de Goiás
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Based on the principle that water resources are limited and vulnerable, associated with the use by a growing population, industrial and agricultural expansion, management in an integrated manner is necessary, with the use of preventing damage and ensuring the use of quality water and quantity for the present and future society. The issuance of grants in the state of Goiás for the use of state-owned waters is under the responsibility of the Secretaria de Estado de Meio Ambiente e Desenvolvimento Sustentável, which describes in the Resolução n° 09, de 04 de maio de 2005 the conditions and criteria for effecting the authorizations. In this process, knowledge of water availability is paramount, but obtaining hydrological information directly is not always possible and, in many situations, tools are needed to assist in obtaining this information, such as flow regionalization. So, this study had as main objective to evaluate water availability in surface catchment basins for public supply in the state of Goiás, through the comparison between the traditional method of flow regionalization and the method used by the water resources management agency in Goiás Of the 195 surface catchment basins analyzed, it was found that 27.7% have flows granted that exceed the flow that can be granted and/or exceed the reference flow present in 95% of the time. It was concluded that these catchment basins for public supply are in critical situations and that the grants, granted in these places, exert an excessive pressure on the springs, since the withdrawal of water is greater than allowed. As much as water availability estimates have been carried out using flow regionalization, these areas can be considered as priorities for the planning and management of water resources and for implementing actions based, for example, on payment for environmental services.
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HONÓRIO, M. S. Avaliação da disponibilidade hídrica superficial no estado de Goiás. 2020. 92 f. Dissertação (Mestrado em Ciências Ambientais) - Universidade Federal de Goiás, Goiânia, 2020.