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Article

The Waterlogging Process Model in the Paddy Fields of Flat Irrigation Districts

1
Changjiang River Scientific Research Institute, Wuhan 430010, China
2
State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University, Nanjing 210098, China
*
Authors to whom correspondence should be addressed.
Academic Editor: Giovanni Ravazzani
Water 2021, 13(19), 2668; https://doi.org/10.3390/w13192668
Received: 23 August 2021 / Revised: 15 September 2021 / Accepted: 23 September 2021 / Published: 27 September 2021
Flat, low-lying agricultural areas such as irrigation districts in southern China have been increasingly vulnerable to flood inundation disasters because of the increased runoff associated with urbanization and climate change. In this study, we developed a waterlogging process simulation model comprising two parts: runoff generation module and runoff confluence module. An improved tank model and hydrodynamic model based on Saint–Venant equations were adopted in the runoff generation and confluence module, respectively. The results show that the model’s relative error and root mean square error are 2.1% and 0.17 mm/h, and the Nash coefficient of the model is 0.91. The relative error of river level simulation was within 5%, and the Nash coefficient was higher than 0.9. The proposed waterlogging simulation model could be a valuable tool for describing the process of waterlogging generation, accumulation, and confluence in the studied irrigation district or other regions with similar climatic conditions. View Full-Text
Keywords: waterlogging; modeling; paddy field; tank model; rain runoff waterlogging; modeling; paddy field; tank model; rain runoff
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MDPI and ACS Style

Xiong, Y.; Liu, Z.; Liu, F.; Yuan, N.; Fu, H. The Waterlogging Process Model in the Paddy Fields of Flat Irrigation Districts. Water 2021, 13, 2668. https://doi.org/10.3390/w13192668

AMA Style

Xiong Y, Liu Z, Liu F, Yuan N, Fu H. The Waterlogging Process Model in the Paddy Fields of Flat Irrigation Districts. Water. 2021; 13(19):2668. https://doi.org/10.3390/w13192668

Chicago/Turabian Style

Xiong, Yujiang, Zhenyang Liu, Fengli Liu, Niannian Yuan, and Haolong Fu. 2021. "The Waterlogging Process Model in the Paddy Fields of Flat Irrigation Districts" Water 13, no. 19: 2668. https://doi.org/10.3390/w13192668

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