Evaluation of SWAT for Sediment Prediction in a Mountainous Snowmelt-Dominated Catchment

Flynn, K. F.; Liew, Michael W. Van

doi:10.13031/2013.36265

Cited by 14 publications

(3 citation statements)

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“…Mountainous areas with complex terrain are widely distributed in the Xinjiang region [18][19][20]. During the spring, temperatures warm significantly, with a corresponding increase in the frequency of flooding [21].…”

Section: Introductionmentioning

confidence: 99%

Inclusion of Modified Snow Melting and Flood Processes in the SWAT Model

Duan

Meng

et al. 2018

Water

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Flooding, one of the most serious natural disasters, poses a significant threat to people’s lives and property. At present, the forecasting method uses simple snowmelt accumulation and has certain regional restrictions that limit the accuracy and timeliness of flood simulation and prediction. In this paper, the influence of accumulated temperature (AT) and maximum temperature (MT) on snow melting was considered in order to (1) reclassify the precipitation categories of the watershed using a separation algorithm of rain and snow that incorporates AT and MT, and (2) develop a new snow-melting process utilizing the algorithm in the Soil and Water Assessment Tool Model (SWAT) by considering the effects of AT and MT. The SWAT model was used to simulate snowmelt and flooding in the Tizinafu River Basin (TRB). We found that the modified SWAT model increased the value of the average flood peak flow by 43%, the snowmelt amounts increased by 45%, and the contribution of snowmelt to runoff increased from 44.7% to 54.07%. In comparison, we concluded the snowmelt contribution to runoff, flood peak performance, flood process simulation, model accuracy, and time accuracy. The new method provides a more accurate simulation technique for snowmelt floods and flood simulation.

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Section: Introductionmentioning

confidence: 99%

Inclusion of Modified Snow Melting and Flood Processes in the SWAT Model

Duan

Meng

et al. 2018

Water

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“…According to previous research, mountain torrents account for 70% of the casualties and more than 50% of the economic losses caused by floods [57,58,59,60]. The region’s many mountainous areas and the complex terrain in Xinjiang [61,62,63] also contribute to the distinctive climatic conditions and hydrological events. In high-altitude mountainous areas with scarce vegetation, snow falls more in the winter and precipitation is reduced in the spring [64].…”

Section: Study Area and Datamentioning

confidence: 99%

Sub-Daily Simulation of Mountain Flood Processes Based on the Modified Soil Water Assessment Tool (SWAT) Model

Duan

Meng

et al. 2019

IJERPH

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Floods not only provide a large amount of water resources, but they also cause serious disasters. Although there have been numerous hydrological studies on flood processes, most of these investigations were based on rainfall-type floods in plain areas. Few studies have examined high temporal resolution snowmelt floods in high-altitude mountainous areas. The Soil Water Assessment Tool (SWAT) model is a typical semi-distributed, hydrological model widely used in runoff and water quality simulations. The degree-day factor method used in SWAT utilizes only the average daily temperature as the criterion of snow melting and ignores the influence of accumulated temperature. Therefore, the influence of accumulated temperature on snowmelt was added by increasing the discriminating conditions of rain and snow, making that more suitable for the simulation of snowmelt processes in high-altitude mountainous areas. On the basis of the daily scale, the simulation of the flood process was modeled on an hourly scale. This research compared the results before and after the modification and revealed that the peak error decreased by 77% and the time error was reduced from ±11 h to ±1 h. This study provides an important reference for flood simulation and forecasting in mountainous areas.

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“…In addition to the methods proposed in Meng et al [18], there are recent publications that use models developed to implement the snow-runoff process. The well-known SWAT model has also been widely used in recent publications [1,[19][20][21][22][23][24][25][26][27][28][29][30][31][32][33]. Xie et al [15] develops a progressive segmented optimization algorithm to calibrate the temporal variation parameters of the snowmelt-runoff model.…”

Section: Introductionmentioning

confidence: 99%

Assessment of the Role of Snowmelt in a Flood Event in a Gauged Catchment

Mateo-Lázaro

Castillo-Mateo

Navarro

et al. 2019

Water

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An actual event that happened in the Roncal valley (Spain) is investigated and the results are compared between models with and without snowmelt. A distributed rainfall model is generated with the specific data recorded by the rain gauges of the catchment during the episode. To describe the process of water routing in the hydrological cycle of the basin, a model is used based on combinations of parallel linear reservoirs (PLR model), distribution by the basin, and tip-out into its drainage network configured using a digital terrain model (DTM). This PLR model allows simulation of the different actual reservoirs of the basin, including the snow and the contribution due to its melting which, in the model, depends on the temperature. The PLR model also allows for a water budget of the episode where, in addition to the effective rainfall contribution, the water that comes from the thaw is taken into account. The PLR model also allows determination of the amount of water that exists in the basin before and after the episode, data of great interest. When comparing the simulations with and without taking into account the thawing process, it is evident that the intervention of the snow reservoir has been decisive in causing a flood to occur.

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Evaluation of SWAT for Sediment Prediction in a Mountainous Snowmelt-Dominated Catchment

Cited by 14 publications

References 0 publications

Inclusion of Modified Snow Melting and Flood Processes in the SWAT Model

Inclusion of Modified Snow Melting and Flood Processes in the SWAT Model

Sub-Daily Simulation of Mountain Flood Processes Based on the Modified Soil Water Assessment Tool (SWAT) Model

Assessment of the Role of Snowmelt in a Flood Event in a Gauged Catchment

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