What is the flood season? What are the main flood seasons of the seven major rivers in China?

The periodic flood phenomenon in rivers is called flood season. The flood season refers to the period when the river keeps rising. Usually there are two meanings: one refers to the period when the river rises and falls; The other refers to the period when the flood tide of the river falls back to a certain water level (or flow) and needs to be defended, that is, the flood control period.

The main flood seasons of the seven major rivers are:

(1) Pearl River: May-July;

(2) Yangtze River: June-September;

(3) Huaihe River: June-August;

(4) Yellow River: July-September;

(5) Haihe River:? July-August;

(6) Liaohe:? July-August;

(7) Songhua River:? July to August.

General types of flood season

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

(1) The flood season with heavy rain in summer is called the 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 when the iceberg at the source of Beijiang 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.