When is the flood season in northern China?

On June 1 day, the northern region entered the flood season.

The division of the start and end time of flood season, such as: April to September is the flood season in Jiangnan area, and May to June is the main flood season; The Yangtze River is in flood season from May to1mid-October, with the main flood season from July to August. The Huaihe River is in flood season from June to September, and the main flood season is from July to August. The Yellow River is in flood season from July to 10, and July to August is the main flood season. Haihe River is in flood season from July to August, and the main flood season is from late July to early August. Songhua River is in flood season from July to September, and the main flood season is from late August to early September.

With the change of rain belt, the start time of flood season in China is gradually delayed from south to north, while the length of flood season is gradually shortened from south to north. Pearl River, Qiantang River, Oujiang River, Yellow River, Hanshui River and Jialing River have obvious double flood seasons. The former is divided into pre-flood season and post-flood season, while the latter is divided into dormancy period and autumn flood season. July to August is the highest frequency of major floods in China.

Extended data:

According to the different seasons and causes of floods, they are generally divided into four flood seasons:

1, and the flood season dominated by summer rainstorm is called flood season;

2. The flood season mainly caused by autumn rainstorm (or strong continuous rain) is called autumn flood season.

3. The flood season caused by ice jam and thawing in winter and spring is called ice flood.

4. The flood season is called the spring flood season, which is mainly the flood season when the iceberg in the north source of the river melts or the ice sheet in the upper reaches freezes, and the south enters the rainy season at the turn of spring and summer. On the Yellow River, because Hong Ling, who speaks from the upper reaches of the river, spreads to the lower reaches, it is the season when peach blossoms are in full bloom, so it is also called the peach blossom flood season. Because flood season and autumn flood season follow closely, it is easy to form a big flood, which is generally called summer and autumn flood season, and is usually referred to as flood season for short.

References:

People's Network-Great Yangtze River enters flood season in an all-round way. The situation of flood control and drought relief is severe this year.

Baidu encyclopedia-flood season