Hydrological simulation as subside for management of surface water resources at the Mortes River Basin

Abstract

Hydrological models are tools which describe processes and allow predicting the results of making management decisions, and are an important water resource management tool, especially for small-sized watersheds. This work had as an objective to test different calibration strategies and apply the SWAT model for hydrological simulation of the Mortes River Basin, MG. We evaluated 6 fluviometric stations, with drainage area between 272 and 6070 km² for purposes of water resource management. The evaluation of the model performance was conducted by using Nash-Sutcliffe coefficients (CNS) and percent bias (PBIAS). The results obtained from the statistic indices applied in the analysis of the model performance qualified the SWAT hydrological model as adequate for streamflow simulation in the Mortes River Basin. The adopted strategies attest to the applicability of the model as a management tool for water resources planning for other small-sized watersheds without data, in order to plan for rational water use.

Hydrological calibration and validation of the MGB-IPH model for water resource management in the upper Teles Pires River basin in the Amazon-Cerrado ecotone in Brazil

“…In order to evaluate the MGB-IPH model performance, we used the Nash-Sutcliffe efficiency coefficient (NS) and its logarithmic version (NS LOG ), which is more influenced by low flows, as well as the percent bias (PBIAS) coefficient Eduardo et al 2016) as follows:…”

Desempenho Do Modelo Swat Para Diferentes Critérios De Geração De Unidades De Resposta Hidrológica

“…O processo de calibração foi conduzido conforme recomendado por Eduardo et al (2016 < NS > 1,00 o modelo é considerado muito bom; 0,65 < NS < 0,75 o modelo é considerado bom; entre 0,50 e 0,65 satisfatório; e abaixo de 0,50 inadequado.…”

“…No Brasil, o modelo SWAT tem sido adotado largamente na modelagem de bacias hidrográficas com escalas distintas, para diferentes objetivos: avaliação de impactos de mudanças no uso do solo; potencial de produção e transporte de sedimentos; disponibilidade hídrica; impactos hidrológicos decorrentes de mudanças climáticas, dentre outros (DURÃES, MELLO e NAGHETTINI, 2011;LELIS et al, 2012;PINTO et al, 2013;ANDRADE, MELLO e BESKOW, 2013;PERAZZOLI, PINHEIRO E KAUFMANN, 2013;EDUARDO et al, 2016).…”

Análise de sensibilidade e calibração espacial do modelo SWAT aplicado em uma bacia do litoral pernambucano através de dados climáticos observados e de reanálise (Analysis of sensitivity and calibration of the SWAT model applied in a basin in northeast of Brazil using observed and reanalysis climatic data)

“…Most Brazilian studies have conducted sensitivity, calibration and validation analyses using data for only one watershed outlet, as can be seen in the works of Andrade, Mello and Beskow (2013), Pereira et al (2014aPereira et al ( , 2014b, Rodrigues et al (2015); Brighenti, Bonuma and Chaffe (2016), and Franco and Bonumá (2017); however, some studies have used more detailed calibration and validation techniques, for example, Lelis et al (2012), Bressiani et al (2015), and Eduardo et al (2016). Calibration using data from a single outlet, as indicated by Daggupati et al (2015a) may be adequate for small basins with uniform features, but for larger basins the results can produce mean parameter values that are overestimated or underestimated at several points, and require spatially distributed calibration.…”