Yi river originated in the northern foot of Niu Jiao, the upper source of Tianzhuang Reservoir in Yiyuan County, Shandong Province, flows northward through Yiyuan County, then turns south, passes through Yishui, Yinan, Linyi, Mengyin, Pingyi and Tancheng, reaches Wulou Village, Pizhou City, Jiangsu Province, enters Xinyi River, and reaches Wei Yan Port to enter the Yellow Sea.

Yi River is mainly a hilly area above Linyi, with serious soil erosion, and its tributaries mostly flow in from the west side, showing asymmetric dendritic shape, rapid water flow, high flood peak and rapid fluctuation. Linyi enters the plain below, and the river is wide and shallow, mainly relying on dikes for flood discharge.

Extended data

Mantis River 1

The Mantis River, located in Yiyuan County, originated from the fourth famous mountain in Shandong Province-the Mantis Cliff in Sanfushan, southwest of Lushan Mountain. It is adjacent to Yiyuan Lushan Cave Group in the east, flows through Nanlushan Town and Nanma Town in the south, passes through Yiyuan County, and flows into yi river in the south of the city, with a total length of 27 kilometers and a drainage area of 187 square kilometers.

2. Dong Wenhe

Dong Wenhe, commonly known as Wenshui, was later renamed Dong Wenhe, which is different from Dawenhe in the north of Mount Tai. Yi River, a tributary, originates from the mountainous area in the middle of Shandong Province and flows into Yunmeng Lake, which is located in Mengyin County and yinan county.

Baidu encyclopedia-Yihe

Baidu Encyclopedia-Dongwenhe

Baidu encyclopedia-mantis river