Rainfall and flow of the Riozinho do Rôla Basin on Western Amazon

Macedo, Maria de Nazaré Costa de; Dias, Herly Carlos Teixeira; Araújo, Edson Alves de; Souza, Maria Lúcia Hall de; Silva, Elias

doi:10.4136/ambi-agua.809

Cited by 11 publications

(5 citation statements)

References 4 publications

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“…The dry, low-flow period is popularly known as the "Amazonian summer," while the rainy season with higher flows in the watercourses is known as the "Amazonian winter." In the heavy rainfall period, it is common for rivers to overflow their banks in their main channels, consequently invading their flood plains (Macêdo et al, 2013;Moreira and Naghettini, 2016).…”

Section: Followingmentioning

confidence: 99%

Stationarity in Annual Daily Maximum Streamflow Series in the Hydrographic Basin of the Upper Juruá River, Western Amazon

Moreira

Aquino

Mesquita

et al. 2019

Rev. Bras. Geog. Fis.

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The objective of this study was to investigate the hypothesis of stationary behavior in the streamflow regime of the upper Juruá river. For this purpose, annual maximum daily flow data recorded at stations located in Cruzeiro do Sul and Marechal Thaumaturgo, AC, Brazil, were analyzed using Mann-Kendall, Pettitt, and Spearman's Rho tests. The results show sufficient evidence to conclude that in Cruzeiro do Sul flow rates have an ascending temporal behavior, while in Marechal Thaumaturgo it is descending. However, this tendency is not significant (p<0.05), allowing to conclude in favor of the hypothesis of stationarity in the streamflow series of the referred basin. Thus, one of the physical implications associated to the results obtained may be the conclusion that the streamflow regime in the Upper Juruá basin has not changed significantly over time. Key words: stationarity, annual maximum daily flow, Upper Juruá basin. R E S U M O O presente estudo tem o objetivo de investigar a hipótese de comportamento estacionário no regime de vazões do alto rio Juruá. Para tal, foram utilizadas as séries temporais de vazões diárias máximas anuais, gravados nas estações localizadas em Cruzeiro do Sul e Marechal Thaumaturgo, as quais foram analisadas por meio do teste de Mann-Kendall, de Pettitt e do Spearman Rho teste. Os resultados demonstram evidências suficientes para concluir que, em Cruzeiro do Sul, as vazões apresentam comportamento temporal ascendente, enquanto em Marechal Thaumaturgo descendente. Entretanto, tal inclinação não é significativa (p<0,05), permitindo concluir em favor da hipótese de estacionariedade nas séries de vazões da referida bacia hidrográfica. Assim, uma das implicações físicas associadas aos resultados obtidos pode ser a conclusão de que o regime de vazões na bacia do Alto Juruá não sofreu alterações significativas ao longo do tempo. Palavras-chave: estacionariedade, vazões máximas, Bacia do Alto Juruá.

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Section: Followingmentioning

confidence: 99%

Stationarity in Annual Daily Maximum Streamflow Series in the Hydrographic Basin of the Upper Juruá River, Western Amazon

Moreira

Aquino

Mesquita

et al. 2019

Rev. Bras. Geog. Fis.

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“…In the gauged stations 1, 2, and 3 streamflow series used in the study of SRB, MRB, and PRB, respectively, were monitored. The spatial average rainfall in the basins was obtained by the Thiessen Polygon method (Macêdo et al 2013), considering the rainfall stations n.6 to n.11, n.13 and n.15 for SRB; n.11 to n.15 for MRB; and n.15 to n.20 for PRB. The weather station data n.4 was used for SRB and n.5 for MRB and PRB for calculating the evapotranspiration by the Penman-Monteith equation (Allen et al 1998).…”

Section: Basins and Hydrometeorological Datamentioning

confidence: 99%

Streamflow forecasting in Tocantins river basins using machine learning

et al. 2022

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Understanding the behavior of the river regime in watersheds is fundamental for water resources planning and management. Empirical hydrological models are powerful tools for this purpose, with the selection of input variables as one of the main steps of the modeling. Therefore, the objectives of this study were to select the best input variables using the genetic, recursive feature elimination, and vsurf algorithms, and to evaluate the performance of the random forest, artificial neural networks, support vector regression, and M5 model tree models in forecasting daily streamflow in Sono (SRB), Manuel Alves da Natividade (MRB), and Palma (PRB) River basins. Based on several performance indexes, the best model in all basins was the M5 model tree, which showed the best performances in SRB and PRB using the variables selected by the recursive feature elimination algorithm. The good performance of the evaluated models allows using them to assist different demands faced by the water resources management in the studied river basins, especially the M5 model tree model using streamflow lags, average rainfall, and evapotranspiration as inputs.

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“…The daily rainfall data during the time period of this research were obtained from the pluviometric stations of the National Hydrological Network (Rede Hidrológica Nacional), available at ANA's SNIRH (Sistema Nacional de Informações Sobre Recursos Hídricos -National Information System on Water Resources) (CALDEIRA et al, 2015;MACÊDO et al, 2013;TUCCI, 2007).…”

Section: Sampling Informationmentioning

confidence: 99%

Surface-groundwater interaction in unconfined sedimentary aquifer system in the Brazil’s tropical wet region

Cavazzana

Lastoria

Gabas

2019

RBRH

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Since groundwater and surface waters are important components of the hydrological system, determining their interaction is essential for the efficient management of water resources by predicting the consequences of interference, whether due to the growth of demand or due to climate change. However, integrated scientific studies on these water resources are scarce, including in the Guariroba’s Environmental Protection Area, responsible for supplying 31.3% of the Campo Grandem/MS’s population, representing a local water security element. Thus, this work had as objective to evaluate the interaction between surface-groundwater in an unconfined sedimentary aquifer system, based on hydrograph separation methodologies of base flow, Flow Duration Curve (FDC) analysis, Master Recession Curve (MRC) evaluation and verification of the relationship between the surface flow, piezometric levels (PL) of the wells and the monthly precipitation. The results indicates a proportional relationship between rainfall, superficial flow and PL variations; the FDC smooth slope suggests that the baseflow is sustained by the groundwater discharge, corresponding to 89% of the total flow; the low-flow index indicates that the groundwater’s storage capacity is about 80%; the Base-Flow Index (BFI) ranging from 0.804 to 0.921, indicates a stable flow regime, aquifer’s high permeability conditions, though not uniform, and low runoff.

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Rainfall and flow of the Riozinho do Rôla Basin on Western Amazon

Cited by 11 publications

References 4 publications

Stationarity in Annual Daily Maximum Streamflow Series in the Hydrographic Basin of the Upper Juruá River, Western Amazon

Stationarity in Annual Daily Maximum Streamflow Series in the Hydrographic Basin of the Upper Juruá River, Western Amazon

Streamflow forecasting in Tocantins river basins using machine learning

Surface-groundwater interaction in unconfined sedimentary aquifer system in the Brazil’s tropical wet region

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