Abstract:In order to make the water flow allocation more reasonable, based on the rainfall data of flood season in 2016-2020 at Qijiahuozi station and Xueqing station, statistical methods are used for sorting and analysis. The analysis shows that the total rainfall of the two stations in flood season is basically the same, the spatial distribution of precipitation is quite different, the proportion of rainstorm rainfall is large, and the rainfall has the characteristics of concentration. Comparing the data of typical rainfall, it is concluded that the "7.20" precipitation lasts longer, the total rainfall is flat, and the precipitation intensity is relatively flat. In the future , in order to reduce the harm of rainstorm to society, it is necessary to reduce the water level in advance, reduce the peak value of river water level, and actively regulate the gate in time according to the rain and water situation forecast.
