2025年全市雨情水情 “成绩单”出炉

Core Insights - The rainfall in Hangzhou for the year was 1409.2 mm, which is 12.7% lower than the average over multiple years, with a decreasing trend from northwest to southeast [3] - The total water storage in major reservoirs at the end of the year decreased by 9.90 billion cubic meters compared to the beginning of the year [3] Rainfall Summary - The rainfall varied significantly across different districts, with Chun'an receiving the highest at 1482.5 mm, while Qiantang District had the lowest at 1196.1 mm [3] - The rainfall deficit in Chun'an, Jiande, and Lin'an reached 18.6%, 17.3%, and 15.4% respectively [3] - Extreme rainfall was recorded in Lin'an, with three stations exceeding 2100 mm, the highest being 2129.5 mm at the Gao Hong Lin Jia Tang station [3] Water Conditions Summary - During the plum rain season, the highest water levels in the Qiantang River were below warning levels, while some smaller rivers experienced floods above warning or guarantee levels [3] - The typhoon "Zhu Jie Cao" caused floods above warning levels in several stations during the typhoon season [3] Reservoir Management Summary - Out of 19 major reservoirs, 15 exceeded flood limit water levels during the flood season [4] - At the end of the year, the Xin'an River Reservoir had a storage of 133.90 billion cubic meters, a decrease of 9.33 billion cubic meters from the beginning of the year [4] - The total storage for four large reservoirs was 139.05 billion cubic meters, down by 9.51 billion cubic meters, while medium and small reservoirs also saw reductions in storage [4] - The water conservancy department implemented 24-hour monitoring and scientific scheduling to effectively respond to multiple rainfall events, ensuring public safety and normal urban operations [4]