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Changes of Tanghe River course

The Tanghe River has moved many times since it emerged from the Xidayang Reservoir. After the diversion of the Tanghe River in the sixth year of Jiaqing (180 1), the old road became a tributary and the new road became the mainstream. The new highway flows southeast after passing through the present Beijing-Guangzhou Railway, eastward between Qingfengdian and Dingzhou City, passes through the southern boundary of Wangdu County to Gujiaying in Qingyuan County, passes through Daligezhuang, Dongxi Wangli, Luo Jiaying, Wenren, Wangpan and Ququ Northeast, passes through Caoqiao and Gengjiaqiao, enters the Anxin County of Laohu Lake, passes through Shenjiabiao and enters the lake below. In the fifth year of Qing Daoguang (1825), it entered Yangcheng River from Luo Jiaying North and Zhangdeng North and flowed to Yingtou and Caoqiao in the northeast. Tongzhi nine years (1870), diverted from Luo Jiaying to the southeast, from Zhangdengnan to Dazhuang Town via Liangzhai and Wangpan. During the Republic of China, the main stream of Tanghe River was in the east of Beihezhuang Village, the west of Nanwangzhuang Village, the east of Quan Kun Village, the west of Donglu Village, the east of Yingtou Village and the west of Gengjiaqiao. In Qingyuan, the Tanghe River sometimes rolls to the right and sometimes moves to the left, repeatedly separating and combining, with frequent changes. Yuanyangcheng River (Qingshui River) enters Tanghe River, first in the north of Zhangdeng Village, and then at Gengjiaqiao. Due to the jacking of Baiyangdian Lake, the sediment is deposited year by year and the floodplain is spread. Beneath Wen Ren, above Baiyangdian and west of Simendi, there is a Wang Yang. The water depth is about two meters, which is the "Tanghe floodplain", which has caused profound disasters to the people of Qingyuan.