The Huangpu River's dry flow and the Yangtze River eloquent tide for nearly 20 years the same period, some cargo ships stay?

In the previous stage, some inland water levels in Shanghai reached the phenomenon of ship queue waiting for the water level to return to normal on the low value of history.

Jiefang Daily · Shangguan News reporters have learned from the Shanghai Water Affairs Department today (August 28) that since August 1 this year, the Huangpu River's dry flow and the Yangtze River mouth tide are the lowest in the same period in the past 20 years.

Taking Wusongkou Station as an example, the average climax and low tide positions were 3.41 meters and 1.11 meters, respectively, 30 cm and 18 cm lower than the same period (2000 to 2021), and the lowest tide was only 0.54 meters.

Experts from the water affairs department said that the main reason for continuous high temperature and raining and upstream water is the main reason. Since August 1 this year, Shanghai has been in high temperatures for 22 days, with a cumulative precipitation of 68.5 mm, a decrease of nearly 60 % from 154.2 mm in the same period of previous years. At the same time, high temperatures and droughts are generally continued in the middle and lower reaches of the Yangtze River, and the water from the Yangtze River and Taihu has decreased.

In order to ensure the water level in the river, since August this year, the Shanghai Water Department has strengthened the scheduling of drainage drainage and drainage scheduling in the city, and adopted measures such as increasing water diversion and locks at the tide of tide to reduce drainage.

Information picture Li Maojun Photo

According to statistics, since August 1 this year, the city's water conservancy film peripherals have more than 170 water slurations and water diversion of 2092 gates, with a cumulative 9621 hours; drainage of 1979 gates, a cumulative 11615 hours. Compared with the same period last year, water diversion increased by 20%and drainage decreased by 10%.

At present, 14 water conservancy control films in the city are at normal water levels, and the demand for ecological water, irrigation water, and shipping is basically guaranteed.

Around August 26, the water level of the Dianpu River was significantly reduced compared to the same period of the previous year. In addition, some of the peripheral channels were in a state of suspension due to maintenance. There were multiple freight ships on the Dalu River in Longxun Road Bridge. The risk of stranding risk, the relevant departments notified the ship to wait on the spot.

According to reports, 27 major navigation ships in the city are actively doing a good job of navigation of ships under the premise that the water level prediction and ensuring navigation safety. The reporter learned from the relevant management departments today that as of the early morning of August 27, ships in the downstream of the Dalu River have basically resumed normal navigation.

Information picture Li Maojun Photo

Generally speaking, since August 1, the Huangpu River has the lowest flow of the dry flow and the Yangtze River mouth in the past 20 years, which has limited impact on Shanghai. Since August this year, the total number of inland navigation is 291,000, which is basically the same as the 295,000 ships in the same period last year.

Recently, with the decline in the temperature in this city, the upstream drought slowly, and the rising tide position brought by the tide flood, it will further slow down the navigation pressure of related ship locks.

Liberation Daily · Shangguan News Original manuscript, reprinting without permission

Author: Chen Xihuan

WeChat editor: Miss Pi

School pair: Feifei

- END -