The main tributary of Tuojiang River

The Tuojiang River system is developed, and the Mianyuan River, Qingbaijiang River and Pi River in the upper reaches are connected with the Minjiang River system in the adjacent basins, which constitutes the characteristics of Tuojiang River as an open basin. The tributaries in the middle and lower reaches are symmetrically distributed with the main stream. The main tributaries are Jiangxi River, Qiuxi River, Zishui River, Mengqian River, Daqingliu River, Fuxi River and Laixi River.

Mianyuan River originates from the southern foot of Jiuding Mountain, rushes down the mountainous area and dam area of Mianzhu City, and crosses the southern part of Deyang City, with a total length of 133.6 km, which is the positive source of the upper reaches of Tuojiang River. Urban section 16. 1 km. It is Jiuding Mountain on the northwest edge of Sichuan Basin, also called Chaping Mountain. Many streams flow from the east, middle and west of the mountain and gradually merge into three larger tributaries: a river in the west, with a length of 139 km; There is a Shiting River in the middle with a length of 14 1 km, and a Mianyuan River in the east with a length of 180 km. They met near Zhao Zhen in Jintang, and then officially became the mainstream of Tuojiang River. Because Mianyuan River is the longest, it is now the main source of Tuojiang River, and the other two are regarded as collateral tributaries.

Qingbaijiang, also known as Qingbaijiang, is a secondary tributary of Tuojiang River. Its water source comes from Minjiang River, and the upper section is Puyang River. It flows eastward through Bai Pu Gate of Dujiangyan Hub until it reaches Changshou Bridge in Pengxian County, which is called Qingbaijiang River. To the east, it flows through Xindu County, reaches Zhujiawan, along the northwest edge of Mi Mou, reaches Mi Mou on the right bank, separates the stable weir, then flows to Guanghan Xiangyang Field, then flows to Zhao Zhen and joins Tuojiang River.

Juanjiang River originates from Longmen Mountain in the southwest of Pengzhou City God, with a total length of 139 km. It is one of the four sources of Tuojiang River, and its main tributaries are Baishui River and Bailu River in Pengzhou. The locals above the pass of Single Crystal Town in Pengzhou usually call it Yujiang River. Kuang River is divided into nine rivers, namely Duck River, Xiaoshi River, Mamu River, Mengyang River and Qingbaijiang River. After the establishment of People's Republic of China (PRC), the People's Canal was dug to realize the unity of the nine rivers, making Xiaoshi River (the section from Pengzhou Pass to Ma Jing Town in Shifang River Basin) the main channel for flood discharge in flood season. The flood discharge channel in Chengdu Plain is relatively wide, ranging from 200 to 800 meters, and the riverbed is shallow. Another tributary of the Juanjiang River starts from Gexianshan Town and hongyan town Town in Pengzhou and flows through Siping Town, Yinfeng Town and Ma Jing Town in Shifang. Among them, the local people call the river flowing through Shifang "Duck River", and the Xiaoshi River in Pengzhou and the Duck River in Shifang meet near the pineapple weir in Ma Jing Town, Shifang. Through Sanxingdui, Nanxing Town, Guanghan City, and through Hexing Town. Duck River passes through seven administrative villages in Hexing Town and flows into Shiting River. The Kuang River in Guanghan City is also called Duck River, which was called Jiangyan River or Jinyan River in ancient times. It is named after many wild ducks and other migratory birds spend the winter here every winter.

Pi River, the third tributary of Tuojiang River, comes from Minjiang River, and the upper section is Baitiao River. It flows through Bai Pu Gate of Dujiangyan Hub and flows southeast until it reaches Shidi Weir in Pixian County. Shaojia Temple in Xindu enters the area and flows through Xiangfu, Du Yao, Chengxiang and other towns. Kangjia in Xiangfu Town crosses Nayangcha River on the left bank, Naxi River on the right bank of Jielong Village, Naxiuchuan River and Changliu River on the left bank of featherleaf rodgersflower Village in Chengxiang Town, and flows to Zhao Zhen and joins Tuojiang River. The regional flow is long 17.5km, the average river width 155m, and the water depth is 3.5m, with a gradient of 1.32%. The flood volume is 800 cubic meters per second, and the catastrophic flood is 2000 cubic meters per second. The rainwater collection area in the region is 14 1.5 square kilometers, and the annual average flow is 27.34 cubic meters per second. Pi River is a dual-purpose channel for drainage and irrigation in Dujiangyan canal system, and it is also one of the main flood drainage channels in Chengdu Plain. Due to historical changes, it has the characteristics of meandering and unstable plain riverbed. Due to gentle river slope, sediment deposition in flood season and multilateral beaches along the coast. Flood and low water levels vary greatly. The flow in winter and spring is generally 4 cubic meters per second, and the maximum flow in flood season can reach 2000 cubic meters per second. When the flood strikes, the riverbed can't discharge smoothly, which often leads to the damage of coastal areas, especially the five dams in the middle of the river. In history, Pi River was once navigable, and wooden boats arrived in Xujiawan, guanxian, Sandaoyan, Pixian County, and Erjiangtuo, Xindu County, leaving Zhao Zhen and entering the mainstream of Tuojiang River. Pi River is the water source of Qingbaijiang hilly irrigation area in Dongfeng Canal and Dujiangyan water system irrigation area. Pi River has six tributaries: Longmen weir, Xingfu weir, Xiangfuqu, Fenhou weir, Shilong weir and Puli weir, with an irrigation area of 26,923 mu.

Qiuxi River, called Zhuxi in ancient times, originated from Longquan Mountain in the north of Renshou County, with a total length of 140 km. It flows into Tuojiang River from the right bank of Qiuxikou in Zizhong County.

Mengxi (Mengxi), formerly known as Damengxi, originated in the hilly area in the west of Anyue, with a total length of120km. It flows into Tuojiang River from the left bank at Mengxikou in the southeast of Zizhong County.

Daqingliu River, called Liuqinghe and Daiyuhe in ancient times, originated in Nanshan, Anyue County, with a total length of 122km. It flows into Tuojiang River from the left bank in Guobei Township, Jiangnei County.

Fuxi River, which originated from Jianshanzi in the north of Rongxian County, is called Rongxi River and Xushui River in the upper reaches, and Zigong is also called Yanjing River. It was called rongxi and rongchuan in ancient times, with a total length of 146 km. It flows into Tuojiang River from the right bank of Dengjingguan in Fushun.

Shiban River, also known as Maodianzi River, is a first-class tributary of Tuojiang River. Originated in Bai Shu Aoxi Cave, Longquan Mountain, Chang 'an Town, Longquanyi District. It flows through Longquanyi District, enters the area from Youfang Village, Renhe Town, and accepts the low stream along the river and the Gaoziku River, which is basically parallel to chengdu-chongqing railway. Cross the railway to the east of Longwangtuo in renhe town, pass through Honghuatang, flow to Wufengxi in Jintang, and join the Tuojiang River. The flow length is 15km, the average river width is 10m, the gradient is 5‰, the flood discharge capacity is 10 m3/s, the extreme flood is 130 m3/s, the rainwater collection area in the region is 59.5km2, and the annual average flow is 2m3/s. The flood level and low water level vary greatly. The maximum flood can reach 130m3/s, and the flood comes quickly, which often causes disasters.

Gaoziku River, which originated from renhe town Green Temple, a branch of Genting Mountain, is actually a tributary of Shiban River on the left bank. It flows through renhe town, receives the river ditch water, and flows into Shiban River at Longwangtuo. The regional flow is long 13km, the average river width is 7m, the water depth is 3m, the gradient is 5‰, the flood discharge capacity is 6m3/s, the extraordinary flood 18 m3/s, the rainwater collection area is 9.45km2, and the annual average flow is 0.3m3/s. ..

Shuimo River originates from Liangzi, the memorial archway of Luojiashan in Genting Town. It collects many gullies, bypasses Genting Mountain, exits at Jintang Double Arch Bridge, joins Tuanjie Reservoir, turns to the northeast, and joins Tuojiang River at Jintang Xiakou. The regional runoff is 9 kilometers long, the average river width is 5 meters, the water depth is 2 meters, the gradient is 2‰, the flood discharge capacity is 4 cubic meters per second, the catastrophic flood is 1 1 cubic meters per second, the regional rainwater collection area is 24 square kilometers, and the annual average flow is 0.2 cubic meters per second.

Alnus cremastogyne (also known as Mingjiagou and Shahezi, belonging to Changliu River) was called Sanzhou River and Shahe River in ancient times. It is a first-class tributary of Tuojiang River. Originated in Wen 'anchang, Longquanyi District, from south to north, it passes through Fuhong Town, where chengdu-chongqing railway enters the area, and receives many ditches along the river, which flows through Fuhong Town, enters Qingquan Town and reaches Chejia Bridge, with a flow length of 1l km. Then it winds northeast to Tian Yang Village, Qingquan Town, also known as Mingjiagou, which is 8 kilometers long; Go 2 kilometers further north, out of this area, also known as Shahezi. It flows through Jintang Yunxiu and Rowen and flows into Tuojiang River. The regional flow is 2km long, the average river width above Shahezi is 8m, the average river width below Shahezi is 12m, the water depth is 3m, the gradient is 2‰, the flood discharge capacity is 8- 10 m3/s, the extraordinary flood is 25m3/s, and the average flow for many years is1.5-2m3/s. ..

Xijiang River is a fourth-class tributary of Tuojiang River and a first-class tributary of Pi River. Originated in baiyang village, north of Shanquan Town, Longquanyi District, it flows through Longquanyi District and reaches Bajiaoshui Mountain Pass, which is called Dongjiahe and Yima River. Then it flows north along the east side of Longquanyi Town, and the two estuaries are called Xijiang River below. Then it winds north and becomes the boundary river between Xindu County and Longquanyi District. Then it flows to Shibantan and Xinyi Village in Hexing Town, crosses chengdu-chongqing railway in the north, flows through Wanglong Town, Rixin Town and Duyao Town, crosses Xijiang Bridge, reaches Jielong Village in Rixin Town, and joins the Pi River on the right bank. The regional flow is long 19km, the average river width is 45 m, the water depth is 3.5 m, the slope 1. 1‰, the flood volume is 400 m3/s, the catastrophic flood 1.200 m3/s, the rainwater collection area is 58.5 km2, and the annual average flow is 4m3/. 1959 to 1965, in order to alleviate the transportation capacity, the section of Shibantan-Wanglong-Du Yao-Zhao Zhen in Jintang County was once opened to small-tonnage wooden boats.

Hujiang, a first-class tributary of Xijiang River, originates from Huilongguan, Fenghuangshan, Sanhechang, Xindu County, enters Shuangyan Village, Wanglong Town from Xindu Mulan Town, and joins Xijiang River at Longwangtuo, Wanglong Town. The regional runoff is 4.25km long, the average river width 10m, the water depth is 2.8m, the soaring ratio is 2‰, the flood capacity 10 m3/s, the catastrophic flood 15 m3/s, the regional rainwater collection area is 4km2, and the multi-year average flow1.5m3/s. ..

Mi Mou River, a tertiary tributary of Tuojiang River, is located on the right bank of Mimouqianming River, newly excavated 1975. It flows to the east by north and joins the Infinite River at the junction of Guanghan Xiangyang Field. The flow length is 3.5km, the average river width is 1 1m, the water depth is 2.5m, the gradient is 1 ‰, the flood discharge capacity is 60m3/s, the extraordinary flood is 80m3/s, the rainwater collection area is 1km2, and the multi-year average flow is1.5m3.

Changliu River, a secondary tributary of Pi River, is actually one of the northern branches of Yangliuyan. It starts from the Duqiaohe Highway Bridge in Xindu, divides water into areas in Baer weir, flows through Mi Mou, Huayan and Dawan, and reaches the workers and peasants weir, which is called Changliu River, also known as Changlian River. From the workers and peasants weir to Xiushui Friendship Power Station, it flows through the industrial zone and receives industrial wastewater. The middle section of this river is also called the flood discharge river. The lower section of Chengxiang Town under Friendship Power Station is also called Maojiahe. The confluence from the lower section of Yuhong Power Station to Xiuchuan River is also called Ganniu River. The long-flowing river in the region is 18.5km long, with an average river width 17m, a water depth of 3 m, a gradient 1 ‰, a flood discharge capacity of 80 m3/s, a catastrophic flood 100 m3/s, a regional rainwater collection area of 55.23 km2, and an average annual discharge of 5m3/s.

Xiuchuan River, a fourth-class tributary of Tuojiang River, originated in Yangliuyan. After the willow weir diverged north and south under the Duqiaohe Highway Bridge in Xindu, it joined at Sankou Weir in Xiangfu Town, which was called Xiuchuan River and Liuqinghe in ancient times. Xiuchuan River flows eastward in Xiushui Town, receives the long river at the foot of Guanzi Mountain in Yuhong Town, and finally flows into Pi River. The flow length is 10.75 km, the average river width is 20 m, the water depth is 3 m, the gradient is 1 ‰, the flood discharge capacity is1/0m3/s, the catastrophic flood is 250 m3/s, the rainwater collection area in the area is 30 km2, and the average annual flow rate is 3.4m3/s. ..

Yangcha River divides water at the right bank of Xiuchuan River on the border of Xiangfu, flows eastward, passes through the center of Xiangfu Town, and joins the Pi River at Kangjiadu. The regional flow is 3.88km long, the average river width 12m, the water depth is 2.5m, the gradient 1 ‰, the flood discharge capacity 100 m3/s, the catastrophic flood 160 m3/s, the rainwater collection area is 5.5km2, and the average flow for many years/kloc-0. ..

Laixi River, which originated in Gaoping Township of Dazu County, flows into the county territory through Rongchang County to Dengtan Township, and flows into Tuojiang River through Yusi, Fuji, Niutan and Hushi District to Hushi Town of Luzhou City, and its downstream is also called Shenshui River. The domestic flow is 95 kilometers long, the basin area is 433.46 square kilometers, the drop is 53. 1 m, the average flow is 17.433 cubic meters per second, and the irrigation is controlled by 65,000 mu. Maxi River: Originated in Baodaoling Township, Zhongfeng County, named Huayan, flows south to Niunaoqiao via Rongchang County, and then enters the county seat. It flows through Tong Yuan, Shiqiao, Tan Xuan, Maxi, Caoshi, Shunhe and Guangming, and joins Laixi River near Dawutan in Guangming Township. The county has a flow length of 4 1.2km, a drainage area of 2,323.4km2, a drop of 49m and an average flow of 2. 47 cubic meters/second, controlled irrigation of 42,000 mu. Laixi River, which originated in the northern hills of Dazu County, is called Hushi River after crossing Rongchang County. Shui Ye, Longxi, Yueyang River and Siyan River were called in ancient times, with a total length of 238 kilometers. It is the largest tributary of Tuojiang River. In Hushi, Lu Xian County, they flow into Tuojiang River from the left bank.

Huayang River, also known as Zishui River, was called Zixi in ancient times. It is a first-class tributary of Tuojiang River in the north of Ziyang. Originated in stalagmite ditch of stalagmite township in Zhongjiang County (Longquan Mountain in the southeast of Jintang), it flows through more than ten towns in Zhongjiang, Jintang, Jianyang and Jiang Yan, and flows into Tuojiang River on the left bank of Lianghekou (Kunlundu) in Weizi Township of Yanjiang District, with a total length of133km (1kloc-0/4km). The basin elevation is 5 15m, the entrance elevation is 348m, the average gradient is 1.26‰, and the average flow is 8.52m3/s. The main tributaries of Ziyang are Tongjiahe and Huanxi River. Huayang River is generally 20-40 meters wide with a navigable section of 2 1 km.

Huanxi River (also known as Zishui River), a tributary of the east bank of Tuojiang River, its trunk originated in Penny Town, Jintang County, and its tributary Suoxi originated in Lin Bao Town, Lezhi County. The river around the city is 46.8 kilometers long and the Suoxi River is 23.4 kilometers long. It is a seasonal river with large flood fluctuation and low water level.

Jiangxi River, called Jiang Shui and Chishui in ancient times, is a first-class tributary on the right bank of Tuojiang River in western jianyang city. Originated in Longquan Mountain Range, Niujiaozhai, Zhongba Township, Renshou County, flows through Sancha Reservoir, Yucheng Town, Cao Chi Town and other places in jianyang city, and flows into Tuojiang River, with a total length of 84.7 kilometers (7 1.5 kilometers and 75 kilometers) and a drainage area of 898 square kilometers. Among them, the territory of jianyang city is 63.5 kilometers long and the drainage area is 684 square kilometers. The water cooling elevation is 850m, the water inlet elevation is 38 1m, the average gradient is 5.53‰, and the average flow rate is 5.42m3/s. The main tributaries are Chishui River and Conch River. Rivers are generally 30-40 meters wide. The tributaries, Conch River and Chishui River, come from Jiajia District and Ma Yang District respectively. Jiangxi River is also a seasonal river.

The Jiuqu River (Ziyang), a first-class tributary of Tuojiang River in the west of Yanjiang District, originated in Lujia Town, jianyang city, flowed through Wangshui Town, entered Eagle Reservoir, passed Yingxiang Township, entered ziyang, and merged into Tuojiang River at Eel Creek, with a total length of 57.5 kilometers and a drainage area of 368 square kilometers. The basin elevation is 445m, the entrance elevation is 348m, the average gradient is 1.69‰, the average flow is 3.5 1 m3/s ... The river width is generally 10-20m.

Jiuqu River (Lu Xian County) originated in Miaoxin Township, Longchang County, and flowed into the county from Jiaming Town, which belongs to Lu Xian County. Through Jiaming, Luo Qiao, Jinyin, Datian and Shiya, it flows into the Aote River in Fuji Town. The county has a flow length of 3 1.2km, a drainage area of 1.3546 km2, a drop of 30m, an average flow of 7.58m3/s and controlled irrigation of 20,500 mu.