Tu Hai originates in the east of Wenmingzhai Village, Guyun Township, Shenxian County, and flows from southwest to northeast through Shenxian County, Nanle (Henan), Yanggu, Liaocheng, chiping, Gaotang, Yucheng, Qihe, Linyi, Jiyang, Shanghe, Huimin, Binxian and Zhanhua 14 counties and cities, and flows into the Bohai Sea at the mouth of Taoer River in Zhanhua County.

The river is 436 kilometers long and the drainage area is 13902 square kilometers, including 602 square kilometers in Henan Province, 4 square kilometers in Hebei Province and 13296 square kilometers in Shandong Province.

The average river channel ratio is reduced to 0.111000. Because the inland potential in the basin inclines to the northeast, tributaries are mostly injected from the right bank.

(from Baidu Encyclopedia)