Geographical environment of Luanping county

There are four major rivers in Luanping County, namely Luanhe River, Yixun River, Xingzhou River and Chaohe River, with a total drainage area of 30 10.42 square kilometers (this figure is inconsistent with the administrative division area of 2993 square kilometers in neighboring counties), and the river network density is 0. 137 km/square kilometers; Luanhe River, Yixun River and Xingzhou River belong to the Luanhe River system, with a drainage area of 1.587 square kilometers. Chaohe River belongs to Haihe River system, with a drainage area of 1423 square kilometers, which is an important water source for Beijing and Tianjin. There are 7 tributaries 100 square kilometers, 65 branch ditches 100 square kilometers and thousands of seasonal rivers on the four major rivers. Luanhe River is the largest river in Luanping County, the second largest river in Hebei Province and the thirteenth largest river in China.