Author(s): Guanglei Duan; Congsheng Tang; Huafang Yang; Guizhou Sun
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Keywords: Jingjiang River; Change; Relationship; Water level; Discharge
Abstract: From the view of flood control, the Jingjiang River is the most dangerous reach of the Yangtze River. The rating curve changed greatly in the past fifty years because of the variation of many factors. Based on field data, the following conclusion is deduced: the water level at the same discharge descended in the Jinggjiang River; if the same runoff is released from Zhicheng Station during median or low water flow, the water level in the Upper Jingjiang Reach descended and that in the Lower Jingjiang River rose gradually. The change is mainly caused by the variation of the relationship between the Jingjiang River and the Dongting Lake, the occurrence of three cutoffs, and the construction of the Gezhouba Project. Based on the analysis of fluvial processes along the Jingjiang River the occurrence of extremely high water level in 1998 is explained in this paper.
Year: 2002