Fator de Pico para Hidrogramas Unitários Sintéticos Triangulares

Silveira, André Luiz Lopes da

doi:10.21168/rbrh.v21n1.p46-52

Cited by 2 publications

(3 citation statements)

References 7 publications

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“…To fill nine gaps in the capture of peak flow data for catchment outlet, the synthetic unit hydrograph (HUS) by Soil Conservation Service method was used according to data from Toniolo et al (2013). Because they are simple and practical methods, HUS are widely used in hydrological studies (Silveira, 2016).…”

Section: Data Collection E Processingmentioning

confidence: 99%

Protected springs water resilience in watershed of south of Brazil

Todeschini

Swarowsky

Panziera

et al. 2022

RBRH

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Springs of the Vacacaí-Mirim river basin, in the Atlantic Forest biome, are protected by law because they provide an environmental service through water supply. No study provided identification, estimates and information about the seasonality of water resilience and environmental conditions of these springs, which supply the central region of the state of Rio Grande do Sul, Brazil. This study monitored headwater flow volume and interpreted the results through seasonality and use of the flow duration curve, characterizing the springs and showing the water production capacity. As a result, the springs presented higher flow duration curve contrasts. Considering consistent monitoring time, differences in flow characteristics occurred in the analyzed springs allowed to qualify based on their persistence, temporary or ephemeral flow, showing which springs are more resilient. The shape of the flow permanence curve was different for each spring in the basin. The study was able to determine the flow duration curve and confirm the resilience and reality of a headwater of the Vacacaí-Mirim river basin, being more accurate and necessary than estimates of flow from springs.

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Section: Data Collection E Processingmentioning

confidence: 99%

Protected springs water resilience in watershed of south of Brazil

Todeschini

Swarowsky

Panziera

et al. 2022

RBRH

View full text Add to dashboard Cite

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“…Although SUH is a simple and practical model to be applied for many hydrological studies (Silveira, 2016), it can be inadequate for ungauged basin due to their high uncertainties (Hrachowitz et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

“…According to Bhunya et al (2011), the advantage obtained by the simplicity of its use is opposed to the uncertainties related to the results, making the applicability and acceptance questionable. Farther, Silveira (2016) highlights the need for greater caution when applying the SUH defined empirically, whose results are sensitive to small variations in the parameters. Singh et al (2014) classified SUH methods into four groups: a) traditional; b) conceptual; c) probabilistic and d) geomorphological.…”

Section: Introductionmentioning

confidence: 99%

The uncertainties of synthetic unit hydrographs applied for basins with different runoff generation processes

Pedroso

Männich

2021

RBRH

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Synthetic unit hydrographs (SUH) are useful tools for the estimation of maximum flows in basins lacking historical records of measurements. However, these methods have many uncertainties and do not always produce results consistent with reality. This study comparatively analyzed the uncertainty of the application of the Snyder, SCS, and Clark HUS methods, widely used, in relation to the observed hydrographs, in the Pequeno River and the Espingarda River basins, located in the State of Paraná, considered small from the point of view of the drainage area. The simulation was performed using the HEC-HMS 4.2.1 software considering a combination of parameters that produced the higher and lower peak flow, respectively named as conservative and bold approaches. It was verified that the SUH methods, in general, overestimated the peak flows for both basins under study. In addition, the results obtained showed that SUH are fundamentally conservative models so that a bold approach in estimating the parameters input leads to results with smaller errors in simulated peak flows. Even running the SUH with the real excess rainfall as input there is an overestimation of the peak flow. SCS SUH produced the highest peak flows and consequently the largest errors while Snyder’s SUH produced the smallest errors. The magnitude of the overestimation of the peak flow for the Pequeno River was up to 60 folds. Its geology features suggest a Dunnian runoff generation process, which explains the larger errors.

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Fator de Pico para Hidrogramas Unitários Sintéticos Triangulares

Cited by 2 publications

References 7 publications

Protected springs water resilience in watershed of south of Brazil

Protected springs water resilience in watershed of south of Brazil

The uncertainties of synthetic unit hydrographs applied for basins with different runoff generation processes

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