Índices de sazonalidade para regionalização hidrológica de vazões de estiagem no Rio Grande do Sul

Beskow, Samuel; Mello, Carlos Rogério de; Faria, Lessandro Coll; Simões, M.; Caldeira, Tamara Leitzke; Nunes, Gabriela S.

doi:10.1590/s1415-43662014000700012

Cited by 8 publications

(8 citation statements)

References 17 publications

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“…The conceptual formulation of the LASH model combined with the promising results of this study and those already presented by Viola et al (2009Viola et al ( , 2013 and Beskow et al (2013) reinforce its potential for estimating flow-duration curves in Brazilian basins with both different physiographical characteristics and limited databases. Therefore, LASH can be used in place of, or to complement, hydrological regionalization techniques applied to the derivation of flow-duration curves (Li et al 2010, Mamum et al 2010, Booker and Snelder 2012, and low streamflows, such as Q 90 and Q 95 (Laaha and Blöschl 2005, Castiglioni et al 2009, Vezza et al 2010, Beskow et al 2014.…”

Section: Resultsmentioning

confidence: 99%

Potential of the LASH model for water resources management in data-scarce basins: a case study of the Fragata River basin, southern Brazil

Beskow

Timm

Tavares

et al. 2016

Hydrological Sciences Journal

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The objective of this study was to evaluate, based on a data-scarce basin in southern Brazil, the potential of the Lavras Simulation of Hydrology (LASH) model for estimating daily streamflows, annual streamflow indicators and the flow-duration curve. It was also used to simulate the different runoff components and their consistency with the basin physiographical characteristics. The statistical measures indicated that LASH can be considered suitable according to widely used classifications and when compared with other studies involving hydrological models. LASH also showed satisfactory results for annual indicators, especially for maximum and average annual streamflows, as well as for the flowduration curve. It was found that the model was consistent with the basin characteristics when simulating runoff components. The results obtained in this study allowed us to conclude that the LASH model has the potential to aid practitioners in water resources management of basins with scarce data and similar soil and land-use conditions.

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Section: Resultsmentioning

confidence: 99%

Potential of the LASH model for water resources management in data-scarce basins: a case study of the Fragata River basin, southern Brazil

Beskow

Timm

Tavares

et al. 2016

Hydrological Sciences Journal

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“…With the advances in the software development, Beskow et al (2014) used SYHDA to organize and handle 108 daily average streamflows series, generate flow-duration curves considering one and two annual periods, obtain the reference streamflows (Q 90 ), and compute different seasonality measures. The authors aimed to study the variability of seasonality measures associated with drought streamflows in the state of Rio Grande do Sul with the aid of SYHDA, given the number of series analyzed and the complexity involved.…”

Section: Applications Of Syhda Considerations and Future Developmentsmentioning

confidence: 99%

SYHDA – System of Hydrological Data Acquisition and Analysis

Vargas

Beskow

Caldeira

et al. 2019

RBRH

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Acquisition and analysis of hydrological series are essential activities for hydrological studies in watersheds. However, they require time and are usually complex and susceptible to human errors. In order to minimize these problems, computational tools are often used for hydrological analysis, although there are few of them in Brazil. This technical note aims to provide a structured document with information on the motivation, development, conception, main functionalities, and applications of the System of Hydrological Data Acquisition and Analysis (SYHDA). SYHDA is a software intended for acquisition and analysis of hydrological data (rainfall and streamflow) and was fully idealized to enable the user to deal with the country’s leading hydrology databases. It has several modules that include analysis by descriptive statistics and graphical tools, seasonality analysis of streamflows, non-parametric tests, and at-site and regional probabilistic modeling. SYHDA has been used in numerous scientific studies, which give grounds to affirm that it demonstrates a great potential to be used in both everyday and complex activities demanded by the scientific and technical community of hydrology and related areas.

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“…Despite the importance of these studies for water resource management, streamflow data have often been a limiting factor for most of the region of interest (Zaman et al, 2012). Concerning the number of fluviometric gauge stations, Brazil has only a few stations, and some of them present short or even insufficient streamflow data, especially in small-medium basins (Beskow et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

“…The quality of the regionalization depends on the hydrological homogeneity between the sites of interest and the monitored site (Razavi and Coulibali, 2013). Beskow et al (2014) emphasized that clustering into homogeneous regions increases the success potential of the regionalization study.…”

Section: Introductionmentioning

confidence: 99%

Streamflow regionalization for the Mortes River Basin upstream from the Funil Hydropower Plant, MG

et al. 2020

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Maximum and minimum streamflow are fundamental for water resource management, especially for water rights. However, lack of monitoring and scarce streamflow data limit such studies. Streamflow regionalization is a useful tool to overcome these limitations. The study developed models for regionalization of the maximum and minimum reference streamflows for the Mortes River Basin (MRB) (Water Resources Planning and Management Unit - GD2), Southern Minas Gerais State. The study used long-term streamflow historical series provided by the Brazilian National Water Agency (ANA). Previous exploratory analysis was performed, and it was observed that the streamflow series are stationary according to the Mann-Kendall test. The estimation of the streamflow for different return periods (RP) was performed by fitting Probability Density Functions (PDFs) that were tested by the Anderson-Darling (AD) test. The Generalized Extreme Values (GEV) and Wakeby were the most appropriate PDFs for maximum and minimum streamflows, respectively. The streamflow models were fitted using a power regression procedure, considering the drainage area of the watersheds as inputs. The fittings reached the coefficient of determination (R2) greater than 0.90. Thus, the streamflow regionalization models demonstrated good performance and are a potential tool to be used for water resource management in the studied basin.

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Índices de sazonalidade para regionalização hidrológica de vazões de estiagem no Rio Grande do Sul

Cited by 8 publications

References 17 publications

Potential of the LASH model for water resources management in data-scarce basins: a case study of the Fragata River basin, southern Brazil

Potential of the LASH model for water resources management in data-scarce basins: a case study of the Fragata River basin, southern Brazil

SYHDA – System of Hydrological Data Acquisition and Analysis

Streamflow regionalization for the Mortes River Basin upstream from the Funil Hydropower Plant, MG

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