Hydrology in Luzhou
There are many large, medium and small rivers in Luzhou, but the runoff of small streams is short. The rivers in the territory belong to the Yangtze River system, with the Yangtze River as the main trunk, distributed in a tree shape, and flow into the Yangtze River from south to North and from north to south. The main rivers are the main stream of the Yangtze River, Tuojiang River, Chishui River, Gulin River, Yongning River, Tang River, Laixi River, Dongmen River, etc. There are 61 rivers with rainfall collection area of more than 50 square kilometers, including 30 rivers with rainfall collection area of 50-100 square kilometers, 20 rivers of 100-400 square kilometers, and 11 rivers of more than 400 square kilometers. Luzhou River belongs to the monsoon River under the control of subtropical monsoon climate, that is, warm season river. The runoff is supplied by summer precipitation, which is the largest in summer and the smallest in winter. There are many rivers and lakes in the territory. It belongs to the Yangtze River system.
The Yangtze River is distributed in the northern part of the urban area. It enters Luzhou from Dadukou town of Naxi District in the west, flows through Naxi District, Jiangyang District, Longmatan District, Luxian county and Wanglong town of Hejiang county to Chongqing city. It crosses the whole city 133 kilometers, with the river surface width of 600-1300 meters. It takes the Yangtze River as the main trunk and consists of four branches to form a dendritic water system. The main tributaries of Yangtze River are Yongning River, Tuojiang River, Longxi River and Chishui River. The main lakes are Huanglong lake, Yulong lake, Fenghuang lake and Honglong lake. The total amount of water resources is large, but the distribution is uneven, so it is difficult to develop.