Since last October, the main Huaihe River should have entered the dry period. However, the water level had been raised than normal. The water level at the river section of Hongze Lake is one meter above the alarm level.

Expert says that the high water level is the result of frequent rain in Huaihe River valley. In the last 5 months, the precipitation is 50%-70% higher than the previous years. Such high water level is rare in history. The abundant supply of water will be beneficial to the industries and agriculture in the region. The water will also help to wash away pollution.