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Open AccessArticle

Influence of Calibration Parameter Selection on Flash Flood Simulation for Small to Medium Catchments with MISDc-2L Model

1
State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, College of Hydrology and Water Resources, Hohai University, Nanjing 210098, China
2
International Institute for Earth System Science, Nanjing University, Nanjing 210023, China
3
Jiangsu Provincial Key Laboratory of Geographic Information Science and Technology, Key Laboratory for Land Satellite Remote Sensing Applications of Ministry of Natural Resources, School of Geography and Ocean Science, Nanjing University, Nanjing 210023, China
*
Author to whom correspondence should be addressed.
Water 2020, 12(11), 3255; https://doi.org/10.3390/w12113255
Received: 24 October 2020 / Revised: 13 November 2020 / Accepted: 18 November 2020 / Published: 20 November 2020
(This article belongs to the Special Issue Advances in Flash Flood Forecasting)
It is of great challenge to accurately predict flash floods for small to medium catchments (SMC) in mountainous areas, for which parameter calibration strategies are crucial for model performance. This study investigates the influence of calibration parameter selection on flash flood simulations using a rainfall–runoff model, MISDc-2L (Modello Idrologico Semi-Distribuito in continuo–2 layers), at hourly scale for SMC in the Huai River basin of China over the 2010–2015 period. We investigated model performances under different calibration schemes, where different amounts of model parameters were selected for the calibration procedure. The model clearly performed better in the case involving calibration of partial sensitive parameters than that of a full parameter set with respect to the peaks, the hydrographs and the base-flow of flood simulation, especially after including maximum water capacity (W_max) in the calibration. This finding was consistently valid under different model calibration experiments, including single event, “split-sample” test and combined events at different flood magnitude levels. We further found that the model performed better for high magnitude flood events than medium and low ones, but clear improvements can be achieved for low and medium magnitude flood events with careful calibration parameter selection. Our study suggests that calibration parameter selection is important for flash flood event simulations with the MISDc-2L model for SMC in the Huai River basin of China; specifically, the reduction in calibration parameter amount and the inclusion of W_max in calibration remarkably improve flood simulation. View Full-Text
Keywords: MISDc-2L model; flash flood simulation; calibration parameter selection; maximum water capacity; small to medium catchment; Huai River basin MISDc-2L model; flash flood simulation; calibration parameter selection; maximum water capacity; small to medium catchment; Huai River basin
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MDPI and ACS Style

Nguyen, N.T.; He, W.; Zhu, Y.; Lü, H. Influence of Calibration Parameter Selection on Flash Flood Simulation for Small to Medium Catchments with MISDc-2L Model. Water 2020, 12, 3255. https://doi.org/10.3390/w12113255

AMA Style

Nguyen NT, He W, Zhu Y, Lü H. Influence of Calibration Parameter Selection on Flash Flood Simulation for Small to Medium Catchments with MISDc-2L Model. Water. 2020; 12(11):3255. https://doi.org/10.3390/w12113255

Chicago/Turabian Style

Nguyen, Ngoc T.; He, Wei; Zhu, Yonghua; Lü, Haishen. 2020. "Influence of Calibration Parameter Selection on Flash Flood Simulation for Small to Medium Catchments with MISDc-2L Model" Water 12, no. 11: 3255. https://doi.org/10.3390/w12113255

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