Author(s): Liu Xiaowei; Li Shiming; Xu Keyan; Feng Ling
Linked Author(s):
Keywords: Middle Yellow River; Storm; Flood; Wudinghe River; Kuyehe River; Huangpuchuan River
Abstract: From August 18 to 19,2001, there occurred an intense rainfall covering a large area in the middle Yellow River. Key hydrological stations on the primary river and its tributaries experienced the largest flood of the year. During that flood, Baijiachuan Station on the Wudinghe River had a peak flood of 3030 m 3 /s, which was the fourth largest flood on record at the station. During this rainfall, except for the Wudinghe River where a large flood occurred, other major tributaries such as the Kuyehe and Huangpuchuan, which yielded flood waters and sediment did not produce large flooding. This phenomenon of heavy rainfall without a corresponding flood seemed abnormal and thus aroused great concern amongst experts tracking the flood events in the area. These experts conducted a storm flood investigation and analysis in the major tributaries of Huangpuchuan, Kuyehe and Wudinghe. The conclusion drawn from the analysis was that the weak intensity of the rainfall and the severe drought prior to the rainfall accounted for the minor flooding in rivers of Huangpuchuan and Kuyehe, though the rainfall-runoff relation of the three rivers was normal on the whole. This paper addresses the causes of the" 2001.8" flood and the comparative analysis of the rainfall-runoff in the three tributaries.
Year: 2002