The daily precipitation in Shandong is about11.400 million cubic meters. What are the effects of heavy precipitation on Shandong?

Long-term rainstorm is easy to produce water accumulation or runoff flooding low-lying areas, resulting in floods. According to the statistics of 1950 ~ 1999, the average flood disaster area in China for many years is 9.424 million hectares, and the affected area of farmland in severe flood years can reach more than130,000 hectares. Rainstorm is a kind of disastrous weather with serious influence.

Continuous rainstorm, heavy rainstorm and extremely heavy rainstorm in a certain area will often lead to flash floods, reservoir dam breaks, rivers flooding, houses being washed away, farmland being flooded, traffic and telecommunications being interrupted, which will bring serious harm to the national economy and people's lives and property.

Heavy rain, especially large-scale continuous heavy rain and concentrated heavy rain, not only affects industrial and agricultural production, but also may endanger people's lives and cause serious economic losses.

Extended data:

China has a monsoon climate. From late spring to midsummer, the cold air in the north fought and retreated. Cold and warm air frequently meet, forming a series of heavy rains. The position of the main rain belt in Chinese mainland also moves from south to north with the seasons. South China (Guangdong, Guangxi, Fujian and Taiwan Province) is the region with the most rainstorm in China. April to September is the rainy season.

The second half of June to the first half of July is usually the rainy season in the Yangtze River basin. In late July, the rain belt moved to the north of the Yellow River. After September, the winter wind was established and the rain belt retreated south.

Affected by the summer monsoon, the number of rainstorm days and rainfall distribution in China decrease from southeast to northwest inland, with mountains more than plains. Moreover, the southeast coastal islands and coastal areas have the largest number of rainstorm days, and the farther northwest, the less. In the northwest plateau, there is less than one day of heavy rain on average every year. Mountain slopes in the southeast or east, such as Taihang Mountain, Dabie Mountain, Nanling Mountain and Wuyishan Mountain, are the centers of rainstorm days in these areas.

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