Excuse me, where is the Qinhuai River basin often mentioned in the weather forecast in China?

The Huaihe River Basin spans Henan, Anhui, Jiangsu and Shandong provinces, covering an area of 270,000 square kilometers, with a population of 654.38+650 million and cultivated land of 654.38+800 million mu. The population density is about 6 15 people/square kilometer, ranking first among the seven major river basins in China. The plain area in the basin accounts for 2/3, the grain output accounts for 1/6 of the whole country, and the commercial grain provided accounts for about 1/4 of the whole country. It is one of the important agricultural products bases in China. There are more than 50 kinds of mineral resources, rich in coal, oil and rock salt, and it is an important energy base in China. The traffic trunk lines in the area are dense, and it is an important hub for the intersection of east, west, north and south railways and highways. It plays a very important role in the whole economic and social development of our country.

With the waste Yellow River as the boundary, the Huaihe River Basin is divided into two major water systems, the Huaihe River and the Yishu Sihe River, with an area of 6.5438+0.9 million square kilometers and 80,000 square kilometers respectively. The Beijing-Hangzhou Grand Canal runs through the north and south, connecting the Huaihe River and the Yishu River. The main stream of Huaihe River originates in Tongbai Mountain, Henan Province, and flows into the Yangtze River in Sanjiang, Jiangsu Province, with a total length of 1000 km and a total drop of 200 meters, with an average gradient of about two ten thousandths. There are many tributaries on both sides of the Huaihe River, and Zhengyangguan in the middle reaches is the place where floods gather in the mountainous areas in the middle and upper reaches of the Huaihe River. In ancient times, there was a saying that "seventy-two waters belong to Zhengyang". Yishu Sishui is the floorboard of yi river River, Shuhe River and Sihe River, all of which originated in Yimeng Mountain area, located in the northeast of Huaihe River Basin, and most of them belong to Jiangsu and Shandong provinces.