Development and testing of a new storm runoff routing approach based on time variant spatially distributed travel time method

Du, Jinkang; Xie, Hongfeng; Hu, Yali; Xu, Youpeng; Xu, Chong‐Yu

doi:10.1016/j.jhydrol.2009.02.033

Cited by 69 publications

(74 citation statements)

References 20 publications

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“…Maidment, ; Maidment et al ., ; Olivera and Maidment, ; Saghafian et al ., ; Liu et al . ; Du et al ., ) that uses the time to equilibrium ( t e ) approach pioneered by Saghafian and Julien (). We make three assumptions: (1) a single continuous and time‐invariant flow path within a storm event (e.g.…”

Section: Model Developmentmentioning

confidence: 99%

Impacts of upland open drains upon runoff generation: a numerical assessment of catchment‐scale impacts

Lane

Milledge

2012

Hydrological Processes

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Shallow upland drains, grips, have been hypothesized as responsible for increased downstream flow magnitudes. Observations provide counterfactual evidence, often relating to the difficulty of inferring conclusions from statistical correlation and paired catchment comparisons, and the complexity of designing field experiments to test grip impacts at the catchment scale. Drainage should provide drier antecedent moisture conditions, providing more storage at the start of an event; however, grips have higher flow velocities than overland flow, thus potentially delivering flow more rapidly to the drainage network. We develop and apply a model for assessing the impacts of grips on flow hydrographs. The model was calibrated on the gripped case, and then the gripped case was compared with the intact case by removing all grips. This comparison showed that even given parameter uncertainty, the intact case had significantly higher flood peaks and lower baseflows, mirroring field observations of the hydrological response of intact peat. The simulations suggest that this is because delivery effects may not translate into catchment‐scale impacts for three reasons. First, in our case, the proportions of flow path lengths that were hillslope were not changed significantly by gripping. Second, the structure of the grip network as compared with the structure of the drainage basin mitigated against grip‐related increases in the concentration of runoff in the drainage network, although it did marginally reduce the mean timing of that concentration at the catchment outlet. Third, the effect of the latter upon downstream flow magnitudes can only be assessed by reference to the peak timing of other tributary basins, emphasizing that drain effects are both relative and scale dependent. However, given the importance of hillslope flow paths, we show that if upland drainage causes significant changes in surface roughness on hillslopes, then critical and important feedbacks may impact upon the speed of hydrological response. Copyright © 2012 John Wiley & Sons, Ltd.

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Section: Model Developmentmentioning

confidence: 99%

Impacts of upland open drains upon runoff generation: a numerical assessment of catchment‐scale impacts

Lane

Milledge

2012

Hydrological Processes

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“…These issues and other simplifications associated with SDTT methods have been indirectly addressed to some extent by defining calibration parameters that modify the travel time expression (Du et al, 2010). Additionally, Gironás et al (2009) hypothesized that these issues can be partially addressed in existing SDTT models by representing the majority of the flow in the basin using channels, which consider upstream contributions in the travel time formulation.…”

Section: Introductionmentioning

confidence: 99%

Assessing the impact of travel time formulations on the performance of spatially distributed travel time methods applied to hillslopes

Zuazo

Gironás

Niemann

2014

Journal of Hydrology

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“…Growing knowledge of flash flood mechanisms shows that the morphometric variables of a catchment control its hydrological response (Angillieri, 2008;Moussa, 2003). Based on this understanding, the geomorphological unit hydrograph (GUH) has become one of the most popular methods for estimating hydrological processes when data are inadequate (Diakakis, 2011;Du et al, 2009). This method is based on the quantitative relationship between catchment geomorphology (e.g., the catchment area and shape, topography, and stream density) and hydrological processes (Khaleghi et al, 2014;Nourani et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

Flash flood hazard mapping: A pilot case study in Xiapu River Basin, China

Zhang¹,

Jin²,

Zhang³

et al. 2015

Water Science and Engineering

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Flash flood hazard mapping is a supporting component of non-structural measures for flash flood prevention. Pilot case studies are necessary to develop more practicable methods for the technical support systems of flash flood hazard mapping. In this study, the headwater catchment of the Xiapu River Basin in central China was selected as a pilot study area for flash flood hazard mapping. A conceptual distributed hydrological model was developed for flood calculation based on the framework of the Xinanjiang model, which is widely used in humid and semi-humid regions in China. The developed model employs the geomorphological unit hydrograph method, which is extremely valuable when simulating the overland flow process in ungauged catchments, as compared with the original Xinanjiang model. The model was tested in the pilot study area, and the results agree with the measured data on the whole. After calibration and validation, the model is shown to be a useful tool for flash flood calculation. A practicable method for flash flood hazard mapping using the calculated peak discharge and digital elevation model data was presented, and three levels of flood hazards were classified. The resulting flash flood hazard maps indicate that the method successfully predicts the spatial distribution of flash flood hazards, and it can meet the current requirements in China.

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Development and testing of a new storm runoff routing approach based on time variant spatially distributed travel time method

Cited by 69 publications

References 20 publications

Impacts of upland open drains upon runoff generation: a numerical assessment of catchment‐scale impacts

Impacts of upland open drains upon runoff generation: a numerical assessment of catchment‐scale impacts

Assessing the impact of travel time formulations on the performance of spatially distributed travel time methods applied to hillslopes

Flash flood hazard mapping: A pilot case study in Xiapu River Basin, China

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