en.Wedoany.com Reported - China's Ministry of Water Resources released the 2025 "China River Sediment Bulletin" on the 27th, revealing that the total runoff at representative hydrological stations of major rivers was 1,171 billion cubic meters, a decrease of 25% compared to the previous year; the annual total sediment transport at these representative stations was 401 million tons, basically the same as the previous year.
The "Bulletin" shows that the Yangtze River's runoff in 2025 accounted for 59% of the national total, with the basin exhibiting an overall trend of "dry first, then abundant." Notably, the Han River experienced a rapid shift from drought to flood, forming seven numbered flood events in succession. The Yellow River's sediment transport accounted for 64% of the national total, with an average sediment concentration of 7.50 kilograms per cubic meter. The Dahei River, a tributary, experienced its largest flood in history, while the Beiluo River recorded a maximum sediment concentration of 1,070 kilograms per cubic meter, the highest among all representative stations. The Chaobai River in the Haihe River Basin encountered its largest flood since 1959.
Regarding river erosion and deposition, key river sections, important reservoirs, and lakes maintained stable erosion and deposition patterns in 2025. The Chongqing urban section of the Yangtze River was in a state of slight deposition, while the Jingjiang reach showed minor variations in erosion and deposition. The Ningxia-Inner Mongolia reach of the Yellow River was dominated by deposition, whereas the downstream channel mainly exhibited scouring. The "Bulletin" points out that the deposition volumes in the Three Gorges Reservoir and Danjiangkou Reservoir areas on the Yangtze River were 52 million tons and 7.31 million tons, with sediment discharge ratios of 5.6% and 26%, respectively. The scouring amounts in the Dongting Lake and Poyang Lake areas were 1.99 million tons and 2.18 million tons, respectively. The deposition volume in the Xiaolangdi Reservoir area on the Yellow River was 91.4 million cubic meters.
The scope of the "Bulletin" covers 12 major rivers, including the Yangtze River, Yellow River, Huaihe River, Haihe River, Pearl River, Songhua River, Liaohe River, Qiantang River, Minjiang River, Tarim River, Heihe River, and Shule River, as well as the Qinghai Lake area. Its main contents include the annual runoff, annual sediment transport, their intra-annual distribution, and flood and sediment characteristics at major hydrological stations of each river, and it records erosion and deposition changes in key river sections, important reservoirs and lakes, as well as significant sediment events.
A relevant official from the Ministry of Water Resources stated that the timely release of the "Bulletin" provides a scientific basis for integrated river basin management, flood and drought disaster prevention, water resource management, the construction and operation of water-related projects, and water ecological restoration. It also offers a platform for the public to understand the sediment conditions of China's rivers.
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