By collecting and organizing the water level data from 34 water gauges during the dry seasons in Yichang-Chenglingji section of the Yangtze River,Pearson correlation analysis and autocorrelation analysis are used to study the spatial-temporal correlation among the gauges,revealing the characteristics of water level spatial-temporal changes during the dry seasons over the past decade.The research findings are as follows:1)The water levels at most gauges in this section have shown a stable trend,with the maximum and minimum dry water level differences at Tiepu,Fanzui,and Chenglingji being more than 3.2 meters.2)The correlation coefficient between upstream and downstream gauges is at least 0.936,indicating a strong hydrological connectivity between adjacent gauge locations.3)Historical water levels in a 20-time sliding window,i.e.,within the past 7 days,have a significant impact on the current water level.The research outcomes can provide reference for understanding the dynamic changes in the hydrological environment of the middle reaches of the Yangtze River,and are of great significance for water resources management and flood control and disaster reduction.