Why did the Yellow River change its course in history?

The Yellow River is famous for its "good siltation, good decision and good luck", and it is said that it will burst twice every three years and change its course once in a hundred years. According to statistics, in the thousands of years before 1946, the Yellow River burst 1593 times and changed its course 26 times. The northernmost branch flows through the Haihe River, leaving Dagukou; The southernmost point passes through the Huaihe River and enters the Yangtze River.

The accumulation landform formed by sediment carried by the Yellow River is the fundamental reason for the breach. 1855 before the Yellow River burst, Wei Yuan found that the terrain on both sides of the Yellow River was high in the south and low in the north, and thought it was inevitable that the Yellow River burst in the north.

Whether there is sediment in the Yellow River does not depend entirely on human unreasonable economic activities. Beach siltation in flood season, river siltation in dry season and long-term river bed uplift. The Yellow River has less water and more sediment, and the serious imbalance between water and sediment is the crux of the Yellow River problem. Therefore, there are different schemes for harnessing the Yellow River, such as the middle and lower reaches, biological measures and engineering measures (Xiaolangdi project), independence and distribution.

During the 2600 years since Zhou Ding's five years, the lower reaches of the Yellow River experienced a great cycle of swinging from north to south and from south to north. There are countless breakthroughs and shifts. Generally speaking, Jin Meng is the apex, and it is the diversion and migration range of the Yellow River on such a large delta as Tianjin in the north and Huaihe River in the south.