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Liao River

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The Liao River is a major waterway in southern Northeast China. It is one of the seven primary river systems in the country. Many people in the region call it the "mother river" due to its importance. The name comes from the historical Liao region of southern Manchuria. This name also provides the basis for the Liaoning province and the Liao dynasty. The river serves as a significant geographical boundary. It divides the Liaoning province into two distinct regions. These areas are known as Liaodong, meaning "east of Liao," and Liaoxi, meaning "west of Liao."

To understand the river, we must look at its two main tributaries. The Xiliao River, or Western Liao River, flows from the west. It drains a massive catchment basin of 310,000 square kilometers. This tributary forms when the Laoha River and Xar Moron River meet in Inner Mongolia. Later, the Xinkai River joins it to strengthen the flow. The second major part is the Dongliao River, or Eastern Liao River. It drains 150,000 square kilometers and has 88 tributaries. Most of its length, over 80 percent, is located in Jilin Province. These two rivers meet near the borders of Liaoning, Jilin, and Inner Mongolia to form the Liao River proper.

The main Liao River then flows south through the Northeast China Plain. It receives many smaller tributaries like the Sutai, Qing, and Chai rivers. As it moves, it sometimes earns the nickname Juliu River, which means "giant stream river." The river carries an extremely high sediment load. This is because much of the river flows through powdery loess. Loess is a very fine, wind-blown soil. This heavy sediment makes the water carry a lot of solid material. The river's path is shaped by this constant movement of soil.

Historically, the end of the river was very different. The river used to split into two separate paths. This area was known as the Liao River Delta. One path was the Shuangtaizi River, which was originally smaller. The other path was the Wailiao River, or Outer Liao River. The Wailiao River was the main body of the lower river. It collected the Hun and Taizi rivers at a place called the "Trident River." This confluence then formed the Daliao River, which flowed into the Liaodong Bay. The delta had a flat topography made of soft sediment.

This flat landscape created serious problems for the people living nearby. The river's waterways were meandrous, meaning they twisted and turned constantly. Because the land was so low, storm surges from the sea could easily cause flooding. This was a major threat to the city of Yingkou. Yingkou is located near the mouth of the Daliao River and has 2 million people. To solve this, engineers started a massive project in 1958. They blocked the upriver section of the Wailiao River at Liujianfang. This engineering work redirected all the water toward the Shuangtaizi River.

This change fundamentally altered the region's water systems. Since 1958, the Liao River no longer has two distributaries. The Shuangtaizi River was renamed the "Liao River" in 2011. Because the Wailiao flow was cut off, the Hun and Taizi rivers are no longer tributaries. They are now considered part of an independent water system. The term "Liao River Delta" is still used today. However, it now refers to the area between the Liao River and the Daliao River. The river system is much more controlled than it was in the past.

The former tributaries of the Liao River were once very large. The Hun River was once the second largest tributary. It flows through Shenyang, the largest city in Northeast China. The river is often muddy due to its fast flow and high sediment. The Taizi River was once the third largest tributary. It flows through important industrial areas like Anshan and Liaoyang. It is also famous for the Benxi Water Caves. Although these rivers are now independent, they remain vital to the geography of southern Liaoning.

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