Estimation and regionalization of minimum reference streamflows in the Branco River basin, Roraima, Brazil, as a support for water resources management

Authors

DOI:

https://doi.org/10.5902/2179460X65901

Keywords:

Use granting, Water availability, Water seasonality, Minimum reference streamflows

Abstract

The effective application of water use granting requires knowing the water supply in the basin to allow the management body to match the demands of different users with water availability. Thus, determining the minimum reference streamflows and their regionalization is essential for defining the grantable limits. This study aimed to estimate and regionalize the minimum reference streamflows Q7,10, Q95, and Q90, with an annual and semiannual frequency, for the Branco River basin, Roraima, Brazil. The following procedures stood out among those carried out: the survey of historical series of existing streamflow data for the basin within the scope of the National Hydrometeorological Network; definition of the hydrological year and seasonal periods; estimation and regionalization of the minimum reference streamflows with an annual and semiannual frequency; and assessment of the impact of seasonality on granting the concession for water resources management in the Branco River basin. The minimum reference streamflows were estimated for thirteen streamflow gauge stations and two homogeneous regions were defined. Significant increases in the minimum reference streamflows were observed when considering the rainy period compared to the annual period. The adoption of the annual streamflow permanence Q95 and Q90 at the Caracaraí streamflow gauge station on the Branco River replacing Q7,10 allowed an increase of 75.1% and 123.3%, respectively, in the streamflow that can be granted. The analysis of results showed that the flexibility of the granting criteria in adopting the seasonality in the water availability allows considerable increases in the grantable streamflow of the Branco River basin in the flood semester.

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Author Biographies

Thiago Barboza Ribeiro, University of the State of Amazonas

He has a Graduation in Surveying Engineering from the Federal University of Viçosa (UFV) and a Master's degree in Water Resources Management and Regulation from the State University of Amazonas.

Luana Lisboa, Geological Survey of Brazil

Pesquisadora em Geociências na Companhia de Pesquisa de Recursos Minerais (CPRM - Serviço Geológico do Brasil), na Superintendência Regional de Manaus (AM). Possui graduação em Engenharia Agrícola e Ambiental (2008), Mestrado em Engenharia Agrícola (2010) e doutorado em Engenharia Agrícola (2014) pela Universidade Federal de Viçosa (UFV), Minas Gerais. Tem experiência na área de engenharia agrícola, com ênfase em conservação de solo e água, atuando principalmente nos seguintes temas: gestão de recursos hídricos, sistemas de informações geográficas, comportamento hidrológico, modelagem hidrológica.

Carlossandro Carvalho de Albuquerque, University of the State of Amazonas

PhD in Geography from the Federal University of Ceará (2012). Master's degree in the area of ​​Environmental Sciences and Sustainability in the Amazon UFAM (2003). Specialization in Environmental Engineering - UFAM (1998). Degree in Geography from the Federal University of Amazonas - UFAM (1997). Adjunct Professor at the State University of Amazonas - UEA. Professional experience in the area of ​​Geography, Environment, Water Resources and Tourism. Coordinator of the professional Master's degree in Water Resources Management and Regulation. He works in higher education and research in master's and undergraduate courses in geography, water resources, environment and tourism.

Michel Castro Moreira, Universidade Federal de Viçosa

He has a degree in Computer Science (2003), a master's degree (2006) and a doctorate (2010) in Agricultural Engineering from the Federal University of Viçosa (UFV). He was a professor at the Federal University of Western Bahia (UFOB), where he coordinated the Geotechnology and Water Resources research group (GeoTecHidro) and served as a member of the Ethics Committee for Research with Human Beings. He is a professor at the Postgraduate Program in Environmental Sciences (PPGCA) at UFOB, guiding work aimed at managing water resources and conserving soil and water in Cerrado areas in Western Bahia. He is currently a professor at the Department of Agricultural Engineering at the Federal University of Viçosa, working in the Postgraduate Program in Agricultural Engineering (PPGEA), in the areas of computer systems development, management and planning of water resources, soil and water conservation, geoprocessing and aerial survey using remotely piloted aircraft (RPAs).

Eduardo Morgan Uliana, Federal University of Mato Grosso do Sul

Adjunct Professor III at the Federal University of Mato Grosso (UFMT), Sinop campus - MT. Permanent professor of the Postgraduate Program in Water Resources (PPGRH) at UFMT - Cuiabá Campus. He has a degree in Environmental Engineering (2010), a Master's in Plant Production (2012) and a PhD in Agricultural Engineering (2016). He has experience in the area of ​​Environmental Engineering, working mainly on the following topics: hydrology, hydraulics, hydrological modeling, quality of the physical environmental environment, water and soil engineering and geoprocessing.

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Published

2023-10-11

How to Cite

Ribeiro, T. B., Lisboa, L., Albuquerque, C. C. de, Moreira, M. C., & Uliana, E. M. (2023). Estimation and regionalization of minimum reference streamflows in the Branco River basin, Roraima, Brazil, as a support for water resources management. Ciência E Natura, 45, e20. https://doi.org/10.5902/2179460X65901

Issue

Vol. 45 (2023): Continuous Publication

Section

Geography

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