What is the flood season?

Flood season is a water conservancy term, which refers to the period when the river flows regularly and significantly in a year. "Flood season" is the appearance of abundant water, and "flood season" is the period when rivers are full of water. Flood season does not mean flood, and floods are generally in flood season.

The flood season is from May 1 day to1October 20th1day every year. The rainfall in Shanghai is obviously more than that in other months, so the river water level in Shanghai is higher than that in winter, but the river water level in Shanghai is greatly affected by tides.

From May to 10 every year, due to the strong tidal force of the sun and the moon and the high tide level, we are used to calling May to 10 as the flood season (heavy rain may start in Shanghai at the end of March and disappear at the end of 10).

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 melting 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.

Refer to the above? Baidu encyclopedia-flood season