Establishment of rating curves, generation of flow series and estimation of maximum grantable flow rates at Guapi-Macacu sub-basin stations, RJ

• Autor(a) principal: Novo, Eduardo Cochrane
• Data de Publicação: 2020
• Outros Autores: da Hora, Mônica de Aquino Galeano Massera
• Tipo de documento: Artigo
• Idioma: por; eng
• Título da fonte: Sistemas & Gestão
• Texto Completo: https://www.revistasg.uff.br/sg/article/view/1585
• topic: Minimum flow rates; Water grants; Rating curve; Water resources management; Permanence curve.; Vazões mínimas; Outorga; Curva-chave; Gestão dos recursos hídricos; Curva de permanência.

The growing demand for water uses, population growth and the occurrence of extreme weather events put water availability in focus. In different parts of the world, water is no longer as abundant as it has been for decades. Human supply remains the major concern and priority in water use policy; however, sectors such as industry, agriculture and energy demand significant amounts of water, in addition to maintaining environmental systems dependent on this natural resource. All these questions highlight the current conflict regarding water use and exploitation. Integrated and sustainable management are essential foundations for the qualitative and quantitative maintenance of water resources. The grant is a legal instrument for the guarantee of water for a specified time and volume, either for the purpose of capturing or discharging effluents, and for its approval, hydrological studies are necessary to estimate the flow to be granted, also called the maximum grantable flow. The present study defined the rating curves and daily flow series of the fluviometric stations inserted in the Guapi-Macacu river basin were generated , located in the eastern portion of Guanabara Bay. Based on the results, it is proposed to adopt a new maximum grantable flow rate, aiming at a scenario of water scarcity that guarantees the integrated and sustainable use of water in the basin.